Bismuth oxyhalide nanomaterials: Layered structures meet photocatalysis
作者：
Li, Jie;Yu, Ying;Zhang, Lizhi*
期刊：
Nanoscale ,2014年6(15):8473-8488 ISSN：2040-3364
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Li, Jie; Yu, Ying] Cent China Normal Univ, Coll Chem, Inst Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.;[Li, Jie; Yu, Ying] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Inst Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.
摘要：
In recent years, layered bismuth oxyhalide nanomaterials have received more and more interest as promising photocatalysts because their unique layered structures endow them with fascinating physicochemical properties; thus, they have great potential photocatalytic applications for environment remediation and energy harvesting. In this article, we explore the synthesis strategies and growth mechanisms of layered bismuth oxyhalide nanomaterials, and propose design principles of tailoring a layered configuration to control the nanoarchitectures for high efficient photocatalysis. Subsequently, we focus on their layered structure dependent properties, including pH-related crystal facet exposure and phase transformation, facet-dependent photoactivity and molecular oxygen activation pathways, so as to clarify the origin of the layered structure dependent photoreactivity. Furthermore, we summarize various strategies for modulating the composition and arrangement of layered structures to enhance the photoactivity of nanostructured bismuth oxyhalides via internal electric field tuning, dehalogenation effect, surface functionalization, doping, plasmon modification, and heterojunction construction, which may offer efficient guidance for the design and construction of high-performance bismuth oxyhalide-based photocatalysis systems. Finally, we highlight some crucial issues in engineering the layered-structure mediated properties of bismuth oxyhalide photocatalysts and provide tentative suggestions for future research on increasing their photocatalytic performance.
语种：
英文
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Graphene based materials for biomedical applications
作者：
Yang, Yuqi;Asiri, Abdullah Mohamed;Tang, Zhiwen;Du, Dan* ;Lin, Yuehe
期刊：
Materials Today ,2013年16(10):365-373 ISSN：1369-7021
通讯作者：
Du, Dan
作者机构：
[Yang, Yuqi; Du, Dan] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.;[Asiri, Abdullah Mohamed] King Abdulaziz Univ, Dept Chem, Jeddah 21589, Saudi Arabia.;[Lin, Yuehe; Tang, Zhiwen] Pacific NW Natl Lab, Richland, WA 99352 USA.;[Du, Dan; Lin, Yuehe] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
通讯机构：
[Du, Dan] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
Graphene, a single layer 2-dimensional structure nanomaterial with unique physicochemical properties (e.g. high surface area, excellent electrical conductivity, strong mechanical strength, unparalleled thermal conductivity, remarkable biocompatibility and ease of functionalization), has received increasing attention in physical, chemical and biomedical fields. This article selectively reviews current advances of graphene based materials for biomedical applications. In particular, graphene based biosensors for small biomolecules (glucose, dopamine etc.), proteins and DNA detection have been summarized; graphene based bioimaging, drug delivery, and photothermal therapy applications have been described in detail. Future perspectives and possible challenges in this rapidly developing area are also discussed. © 2013 Elsevier Ltd.
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英文
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Surface structure-dependent molecular oxygen activation of BiOCl single-crystalline nanosheets
作者：
Zhao, Kun;Zhang, Lizhi* ;Wang, Jiajun;Li, Qunxiang;He, Weiwei;...
期刊：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY ,2013年135(42):15750-15753 ISSN：0002-7863
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Zhao, Kun] Cent China Normal Univ, Coll Chem, Inst Environm Chem, Minist Educ,Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Li, Qunxiang; Wang, Jiajun] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.;[He, Weiwei; Yin, Jun Jie] Food & Drug Adm, Ctr Food Safety & Appl Nutr, College Pk, MD 20740 USA.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Inst Environm Chem, Minist Educ,Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Surface structure-dependent;single-crystalline nanosheets;activation
摘要：
We demonstrate that BiOCl single-crystalline nanosheets possess surface structure-dependent molecular oxygen activation properties under UV light. The (001) surface of BiOCl prefers to reduce O2 to ·O 2- through one-electron transfer, while the (010) surface favors the formation of O22- via two-electron transfer, which is cogoverned by the surface atom exposure and the situ generated oxygen vacancy characteristics of the (001) and (010) surfaces under UV light irradiation. © 2013 American Chemical Society.
语种：
英文
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Self-doping and surface plasmon modification induced visible light photocatalysis of BiOCl
作者：
Jiang, Jing;Zhang, Lizhi* ;Li, Hao;He, Weiwei;Yin, Jun Jie
期刊：
Nanoscale ,2013年5(21):10573-10581 ISSN：2040-3364
通讯作者：
Zhang, Lizhi
作者机构：
[Jiang, Jing; Zhang, Lizhi; Li, Hao] Cent China Normal Univ, Coll Chem, Inst Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.;[Jiang, Jing] China West Normal Univ, Coll Chem & Chem Engn, Nanchong 637002, Peoples R China.;[He, Weiwei; Yin, Jun Jie] US FDA, Ctr Food Safety & Appl Nutr, College Pk, MD 20740 USA.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Inst Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.
摘要：
In this study we demonstrate that self-doping and surface plasmon resonance could endow a wide-band-gap ternary semiconductor BiOCl with remarkable visible light driven photocatalytic activity on the degradation of organic pollutants and photocurrent generation properties. The self-doped BiOCl with plasmonic silver modification was synthesized by a facile one-pot nonaqueous approach and systematically characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV-visible diffuse reflectance spectra, electron spin resonance, and X-ray photoelectron spectroscopy. The photocurrent enhancement was found to be intimately dependent on the irradiation wavelength and matched well with the intensity of the absorption of the Ag nanoparticles. Reactive species trapping experiments and electron spin resonance spectroscopy with 5,5-dimethyl-1-pyrroline-N-oxide spin-trapping adducts confirmed that more oxidative species could be generated from the photogenerated electrons due to the plasmon-excitation of the metallic Ag in the self-doped BiOCl with plasmonic silver modification, which is responsible for the great enhancement of photocatalytic activity and photocurrent. Surface photovoltage spectroscopy and time-resolved photoluminescence spectroscopy results revealed the transfer of plasmon-band-induced electrons from Ag nanoparticles into BiOCl and the acceleration effect of surface plasmon resonance-induced intense oscillating electric fields on this electron transfer. This study would not only provide direct evidence of plasmonic photocatalysis, but also shed light on the design of highly efficient metal-semiconductor composite photocatalysts. ©2013 The Royal Society of Chemistry.
语种：
英文
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Highly efficient photocatalytic removal of sodium pentachlorophenate with Bi3O4Br under visible light
作者：
Wang, Jiling;Yu, Ying;Zhang, Lizhi*
期刊：
Applied Catalysis B: Environmental ,2013年136-137:112-121 ISSN：0926-3373
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Wang, Jiling; Yu, Ying] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol,Inst Environm Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol,Inst Environm Chem, Wuhan 430079, Peoples R China.
关键词：
Bismuth oxybromide;Degradation;Photocatalysis;Sodium pentachlorophenate;Visible light
摘要：
In this study we demonstrate that Bi3O4Br is a superior visible light driven photocatalyst for the decomposition and mineralization of a typical chlorinated phenol derivative sodium pentachlorophenate. It could remove more than 92% of sodium pentachlorophenate with concentration of 40mg/L under visible light irradiation from 500W Xe-lamp with a 420nm cut off filter in 15min, accompanying with 80% of mineralization. Density functional theory (DFT) calculation and systematical characterization reveal that high efficient visible light driven sodium pentachlorophenate removal with Bi3O4Br could be attributed to effective separation and transfer of photoinduced charge carriers in Bi3O4Br with narrower band gap and more negative conduction band position, which favors the photogenerated electrons trapping with molecular oxygen to produce O2-. The O2- radicals could not only inhibit the recombination of photoinduced charge carriers, but also benefit the dechlorination of chlorinated phenol derivative. The visible light induced degradation pathway of sodium pentachlorophenate was carefully investigated with high performance gas chromatography-mass spectrometry. This study provides a new photocatalyst for chlorinated phenol derivative removal with solar light. © 2013 Elsevier B.V.
语种：
英文
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Synthesis and facet-dependent photoreactivity of BiOCl single-crystalline nanosheets
作者：
Jiang, Jing;Zhao, Kun;Xiao, Xiaoyi;Zhang, Lizhi*
期刊：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY ,2012年134(10):4473-4476 ISSN：0002-7863
通讯作者：
Zhang, Lizhi
作者机构：
[Jiang, Jing; Zhang, Lizhi; Xiao, Xiaoyi; Zhao, Kun] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
BiOCl single-crystalline nanosheets with exposed {001} and {010} facets were selectively synthesized via a facile hydrothermal route. The resulting BiOCl single-crystalline nanosheets with exposed {001} facets exhibited higher activity for direct semiconductor photoexcitation pollutant degradation under UV light, but the counterpart with exposed {010} facets possessed superior activity for indirect dye photosensitization degradation under visible light.
语种：
英文
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High capacity, reversible alloying reactions in SnSb/C nanocomposites for Na-ion battery applications
作者：
Xiao, Lifen;Cao, Yuliang;Xiao, Jie;Wang, Wei;Kovarik, Libor;...
期刊：
Chemical Communications ,2012年48(27):3321-3323 ISSN：1359-7345
通讯作者：
Liu, Jun
作者机构：
[Xiao, Jie; Wang, Wei; Xiao, Lifen; Cao, Yuliang; Kovarik, Libor; Liu, Jun; Nie, Zimin] Pacific NW Natl Lab, Richland, WA 99352 USA.;[Xiao, Lifen] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.;[Cao, Yuliang] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China.
通讯机构：
[Liu, Jun] P;Pacific NW Natl Lab, Richland, WA 99352 USA.
摘要：
A new SnSb/C nanocomposite based on Na alloying reactions is demonstrated as anode for Na-ion battery applications. The electrode can achieve an exceptionally high capacity (544 mA h g(-1), almost double that of intercalation carbon materials), good rate capacity and cyclability (80% capacity retention over 50 cycles) for Na-ion storage.
语种：
英文
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Development of cascade reactions for the concise construction of diverse heterocyclic architectures
作者：
Lu, Liang-Qiu;Chen, Jia-Rong;Xiao, Wen-Jing*
期刊：
ACCOUNTS OF CHEMICAL RESEARCH ,2012年45(8):1278-1293 ISSN：0001-4842
通讯作者：
Xiao, Wen-Jing
作者机构：
[Lu, Liang-Qiu; Xiao, Wen-Jing; Chen, Jia-Rong] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Hubei, Peoples R China.;[Xiao, Wen-Jing] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Xiao, Wen-Jing] C;Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
摘要：
Heterocyclic structural architectures occur in many bioactive natural products and synthetic drugs, and these structural units serve as important intermediates in organic synthesis. This Account documents our recent progress in the development of cascade reactions to construct complex carbocycles and heterocycles. We describe the rational design of cascade reactions and in-depth investigations of their mechanism as well as their applications in the synthesis of drugs, natural products, and related molecular analogs.Relying on knowledge about the dipole-type reactivity of sulfur ylides, we have developed three different types of cascade reactions: a [4 + 1] annulation/rearrangement cascade, a [4 + 1]/[3 + 2] cycloaddition cascade, and a Michael addition/N-alkylation cascade. Using these processes, we can generate oxazolidinones, fused heterocycles, and pyrrolines starting with simple and readily available substances such as nitroolefins and unsaturated imines. We have also developed corresponding enantioselective reactions, which are guided by axial chirality and asymmetric H-bonding control. In addition, by relying on the reactivity characteristics of newly designed acrylate-linked nitroolefins, we have disclosed an asymmetric Michael/Michael/retro-Michael addition cascade using the combination of a protected hydroxylamine and a bifunctional organocatalyst. Using this methodology, we prepared chiral chromenes in good yields and with high enantioselectivities. Moreover, a series of double Michael addition cascade reactions with anilines, thiophenols, and benzotriazoles generated highly functionalized chromanes. Via mechanistically distinct cascade processes that start with vinyl-linked indoles, we have synthesized polycyclic indoles. Intermolecular cross-metathesis/intramolecular Friedel-Crafts alkylation cascades, promoted by either a single ruthenium alkylidene catalyst or a sequence involving Grubbs' ruthenium catalyst and MacMillan's imidazolidinone catalyst, converted ω-indolyl alkenes into tetrahydrocarbazoles, tetrahydropyranoindoles, and tetrahydrocarbolines. In addition, we constructed tetrahydrocarbazoles and tetrahydroquinones using organocatalytic Friedel-Crafts alkylation/Michael addition cascades that used 2-vinyl indoles as common starting materials.Most green plants carry out photosynthesis to produce organic substances relying on readily available and renewable solar energy. In a related manner, we have also developed two cascade reactions that merge visible light-induced aerobic oxidation with either [3 + 2] cycloaddition/oxidative aromatization or intramolecular cyclization. These processes lead to the formation of pyrrolo[2,1-a]isoquinolines and enantiopure tetrahydroimidazoles, respectively. © 2012 American Chemical Society.
语种：
英文
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Porous structure dependent photoreactivity of graphitic carbon nitride under visible light
作者：
Dong, Guohui;Zhang, Lizhi*
期刊：
Journal of Materials Chemistry ,2012年22(3):1160-1166 ISSN：0959-9428
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Dong, Guohui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
We demonstrate that graphitic carbon nitride can photoreduce CO2 to CO in the presence of water vapor and exhibit interesting porous structure dependent reactivity on photoreduction and photooxidation under visible light (λ > 420 nm). Graphitic carbon nitride was synthesized by directly heating the inexpensive melamine and the replacement of melamine with melamine hydrochloride could result in porousification in the final graphitic carbon nitride with much higher surface area (39 times) and more abundant pores, accompanied by a band gap increase of 0.13 eV. The porousification could significantly enhance the photoreactivity of graphitic carbon nitride in rhodamine B photooxidation by 9.4 times, but lower its activity in CO2 photoreduction by 4.6 times. The reasons for the porous structure dependent photoreactivity were investigated in detail. These new findings could shed light on the design of efficient photocatalysts and the tuning of their photoreactivity for environmental and energy applications.
语种：
英文
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Sodium ion insertion in hollow carbon nanowires for battery applications
作者：
Cao, Yuliang* ;Xiao, Lifen;Sushko, Maria L.;Wang, Wei;Schwenzer, Birgit;...
期刊：
NANO LETTERS ,2012年12(7):3783-3787 ISSN：1530-6984
通讯作者：
Cao, Yuliang
作者机构：
[Xiao, Jie; Sushko, Maria L.; Wang, Wei; Saraf, Laxmikant V.; Xiao, Lifen; Yang, Zhengguo; Cao, Yuliang; Schwenzer, Birgit; Liu, Jun; Nie, Zimin] Pacific NW Natl Lab, Richland, WA 99352 USA.;[Cao, Yuliang] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Elect Power Sources, Wuhan 430072, Peoples R China.;[Xiao, Lifen] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.;[Cao, Yuliang] Pacific NW Natl Lab, 902 Battelle Blvd,POB 999, Richland, WA 99352 USA.
通讯机构：
[Cao, Yuliang] P;Pacific NW Natl Lab, 902 Battelle Blvd,POB 999, Richland, WA 99352 USA.
关键词：
Hollow carbon nanowires;polyaniline nanowires;anode;sodium ion battery
摘要：
Hollow carbon nanowires (HCNWs) were prepared through pyrolyzation of a hollow polyaniline nanowire precursor. The HCNWs used as anode material for Na-ion batteries deliver a high reversible capacity of 251 mAh g -1 and 82.2% capacity retention over 400 charge-discharge cycles between 1.2 and 0.01 V (vs Na +/Na) at a constant current of 50 mA g -1 (0.2 C). Excellent cycling stability is also observed at an even higher charge-discharge rate. A high reversible capacity of 149 mAh g -1 also can be obtained at a current rate of 500 mA g -1 (2C). The good Na-ion insertion property is attributed to the short diffusion distance in the HCNWs and the large interlayer distance (0.37 nm) between the graphitic sheets, which agrees with the interlayered distance predicted by theoretical calculations to enable Na-ion insertion in carbon materials. © 2012 American Chemical Society.
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英文
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Visible-light photoredox catalysis
作者：
Xuan, Jun;Xiao, Wen-Jing*
期刊：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION ,2012年51(28):6828-6838 ISSN：1433-7851
通讯作者：
Xiao, Wen-Jing
作者机构：
[Xiao, Wen-Jing; Xuan, Jun] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Hubei, Peoples R China.;[Xiao, Wen-Jing] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Xiao, Wen-Jing] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
关键词：
heterocycles;homogeneous catalysis;photocatalysis;radicals;synthetic methods
摘要：
In the last few years, visible-light initiated organic transformations have attracted increasing attention. The development of visible-light-promoted photocatalytic reactions, which enable rapid and efficient synthesis of fine chemicals, is highly desirable from the viewpoint of cost, safety, availability, and environmental friendliness. In this Minireview, recent advances made in this fast developing area of research are discussed. In the spotlight: The title catalysis is an area of research that is developing quickly and has become a powerful and efficient tool in synthetic organic chemistry (see picture, S=Substrates, P=Products). There is little doubt that continued exploration of visible light photoredox catalysis will uncover a wide range of fascinating and useful chemical reactions. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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英文
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CARBON SELF-DOPING INDUCED HIGH ELECTRONIC CONDUCTIVITY AND PHOTOREACTIVITY OF G-C3N4
作者：
Dong, Guohui;Zhao, Kun;Zhang, Lizhi*
期刊：
Chemical Communications ,2012年48(49):6178-6180 ISSN：1359-7345
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Dong, Guohui; Zhao, Kun] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
We theoretically and experimentally demonstrate that carbon self-doping could induce intrinsic electronic and band structure change of g-C 3N 4via the formation of delocalized big π bonds to increase visible light absorption and electrical conductivity as well as surface area and thus enhance both photooxidation and photoreduction activities. © 2012 The Royal Society of Chemistry.
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英文
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A soft approach to encapsulate sulfur: Polyaniline nanotubes for lithium-sulfur batteries with long cycle life
作者：
Xiao, Lifen;Cao, Yuliang* ;Xiao, Jie;Schwenzer, Birgit;Engelhard, Mark H.;...
期刊：
Advanced Materials ,2012年24(9):1176-1181 ISSN：0935-9648
通讯作者：
Cao, Yuliang
作者机构：
[Xiao, Jie; Saraf, Laxmikant V.; Xiao, Lifen; Cao, Yuliang; Exarhos, Gregory J.; Schwenzer, Birgit; Engelhard, Mark H.; Liu, Jun; Nie, Zimin] Pacific NW Natl Lab, Richland, WA 99352 USA.;[Cao, Yuliang] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China.;[Xiao, Lifen] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Cao, Yuliang] P;Pacific NW Natl Lab, Richland, WA 99352 USA.
关键词：
polyaniline;nanotubes;self-breathing;long cycle life;lithium-sulfur batteries
摘要：
A novel vulcanized polyaniline nanotube/sulfur composite was prepared successfully via an in situ vulcanization process by heating a mixture of polyaniline nanotube and sulfur at 280 °C. The electrode could retain a discharge capacity of 837 mAh g<sup>-1</sup> after 100 cycles at a 0.1 C rate and manifested 76% capacity retention up to 500 cycles at a 1 C rate. Copyright ©2012 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim.
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英文
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Highly efficient aerobic oxidative hydroxylation of arylboronic acids: Photoredox catalysis using visible light
作者：
Zou, You-Quan;Chen, Jia-Rong;Liu, Xiao-Peng;Lu, Liang-Qiu;Davis, Rebecca L.;...
期刊：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION ,2012年51(3):784-788 ISSN：1433-7851
通讯作者：
Jorgensen, Karl Anker
作者机构：
[Lu, Liang-Qiu; Xiao, Wen-Jing; Chen, Jia-Rong; Liu, Xiao-Peng; Zou, You-Quan] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Hubei, Peoples R China.;[Jorgensen, Karl Anker; Davis, Rebecca L.] Aarhus Univ, Dept Chem, Ctr Catalysis, DK-8000 Aarhus C, Denmark.;[Xiao, Wen-Jing] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China.;[Jorgensen, Karl Anker] Aarhus Univ, Dept Chem, Ctr Catalysis, Langelandsgade 140, DK-8000 Aarhus C, Denmark.
通讯机构：
[Jorgensen, Karl Anker] A;Aarhus Univ, Dept Chem, Ctr Catalysis, Langelandsgade 140, DK-8000 Aarhus C, Denmark.
关键词：
boron;oxidation;photooxidation;ruthenium;synthetic methods
摘要：
To shed light on: The title reaction allows the generation of a variety of functionalized phenols and analogues using [Ru(bpy)<inf>3</inf>Cl <inf>2</inf>]·6 H<inf>2</inf>O as the photocatalyst under very mild reaction conditions. This reaction not only incorporates an oxygen atom from molecular oxygen directly into the product, but also expands the application of visible-light photocatalysis. bpy=bipyridine. Copyright ©2012 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim.
语种：
英文
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Understanding the formation of CuS concave superstructures with peroxidase-like activity
作者：
He, Weiwei;Jia, Huimin;Li, Xiaoxiao;Lei, Yan;Li, Jing;...
期刊：
Nanoscale ,2012年4(11):3501-3506 ISSN：2040-3364
通讯作者：
Zheng, Zhi
作者机构：
[Mi, Liwei; Lei, Yan; Zhao, Hongxiao; Zheng, Zhi; He, Weiwei; Li, Xiaoxiao; Li, Jing; Jia, Huimin] Xuchang Univ, Key Lab Micronano Mat Energy Storage & Convers He, Inst Surface Micro & Nano Mat, Xuchang City 461000, Henan, Peoples R China.;[Zhang, Lizhi] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Zheng, Zhi] X;Xuchang Univ, Key Lab Micronano Mat Energy Storage & Convers He, Inst Surface Micro & Nano Mat, Xuchang City 461000, Henan, Peoples R China.
摘要：
Copper sulfide (CuS) concave polyhedral superstructures (CPSs) have been successfully prepared in an ethanolic solution by a simple solvothermal reaction without the use of surfactants or templates. Two typical well defined, high symmetry CuS concave polyhedrons, forming a concave truncated cuboctahedron and icosahedron were prepared. The effect of the reaction time, temperature and different Cu ion and sulfur sources on the formation of CuS CPSs were investigated and a possible formation mechanism was proposed and discussed based on gas chromatography-mass spectrometry. More importantly, we found, for the first time, that the CuS CPSs exhibit intrinsic peroxidase-like activity, as they can quickly catalyze the oxidation of typical horseradish peroxidase (HRP) substrates, 3,3',5,5'-tetramethylbenzidine (TMB) and o-phenylenediamine (OPD), in the presence of hydrogen peroxide. In addition to the recent discoveries regarding peroxidase mimetics on Fe<inf>3</inf>O<inf>4</inf> NPs and carbon nanostructures, our findings suggest a new kind of candidate for peroxidase mimics. This may open up a new application field of CuS micro-nano structures in biodetection, biocatalysis and environmental monitoring. ©2012 The Royal Society of Chemistry.
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英文
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Functionalized graphene oxide as a nanocarrier in a multienzyme labeling amplification strategy for ultrasensitive electrochemical immunoassay of phosphorylated p53 (s392)
作者：
Du, Dan;Wang, Limin;Shao, Yuyan;Wang, Jun;Engelhard, Mark H.;...
期刊：
Analytical Chemistry ,2011年83(3):746-752 ISSN：0003-2700
通讯作者：
Lin, Yuehe
作者机构：
[Wang, Limin; Shao, Yuyan; Du, Dan; Lin, Yuehe; Wang, Jun; Engelhard, Mark H.] Pacific NW Natl Lab, Richland, WA 99352 USA.;[Du, Dan] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Lin, Yuehe] P;Pacific NW Natl Lab, Richland, WA 99352 USA.
摘要：
P53 phosphorylation plays an important role in many biological processes and might be used as a potential biomarker in clinical diagnoses. We report a new electrochemical immunosensor for ultrasensitive detection of phosphorylated p53 at Ser392 (phospho-p53392) based on graphene oxide (GO) as a nanocarrier in a multienzyme amplification strategy. Greatly enhanced sensitivity was achieved by using the bioconjugates featuring horseradish peroxidase (HRP) and p53392 signal antibody (p53392Ab 2) linked to functionalized GO (HRP-p53392Ab 2-GO) at a high ratio of HRP/p53392Ab2. After a sandwich immunoreaction, the HRP-p53392Ab2-GO captured onto the electrode surface produced an amplified electrocatalytic response by the reduction of enzymatically oxidized thionine in the presence of hydrogen peroxide. The increase of response current was proportional to the phospho-p53392 concentration inthe range of 0.02-2 nM with the detection limit of 0.01 nM, which was 10-fold lower than that of the traditional sandwich electrochemical measurement for p53392. The amplified immunoassay developed in this work shows acceptable stability and reproducibility, and the assay results for phospho-p53392 spiked in human plasma also show good recovery (92-103.8%). This simple and low-cost immunosensor shows great promise for detection of other phosphorylated proteins and clinical applications. © 2011 American Chemical Society.
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Visible-light-induced oxidation/[3+2] cycloaddition/oxidative aromatization sequence: A photocatalytic strategy to construct pyrrolo[2,1-a]isoquinolines
作者：
Zou, You-Quan;Lu, Liang-Qiu;Fu, Liang;Chang, Ning-Jie;Rong, Jian;...
期刊：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION ,2011年50(31):7171-7175 ISSN：1433-7851
通讯作者：
Xiao, Wen-Jing
作者机构：
[Lu, Liang-Qiu; Chang, Ning-Jie; Rong, Jian; Fu, Liang; Xiao, Wen-Jing; Chen, Jia-Rong; Zou, You-Quan] Cent China Normal Univ, Minist Educ, Coll Chem, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.;[Xiao, Wen-Jing] Cent China Normal Univ, Minist Educ, Coll Chem, Key Lab Pesticide & Chem Biol, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Xiao, Wen-Jing] C;Cent China Normal Univ, Minist Educ, Coll Chem, Key Lab Pesticide & Chem Biol, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
关键词：
alkaloids;oxygen;photochemistry;tandem reactions;visible light
摘要：
A ray of sunshine: The title reaction sequence using ethyl 2-(3,4-dihydroisoquinolin-2(1H)-yl)acetates with a series of electron-deficient alkenes and alkynes provides rapid and efficient access to pyrrolo[2,1-a] isoquinolines (see scheme; bpy=2,2′-bipyridine, EWG=electron-withdrawing group). The reaction offers a strategically new protocol for the direct and efficient construction of the core structure of naturally occurring lamellarin alkaloids. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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英文
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ZnO/BiOI Heterostructures: Photoinduced Charge-Transfer Property and Enhanced Visible-Light Photocatalytic Activity
作者：
Jiang, Jing;Zhang, Xi;Sun, Peibei;Zhang, Lizhi*
期刊：
Journal of Physical Chemistry C ,2011年115(42):20555-20564 ISSN：1932-7447
通讯作者：
Zhang, Lizhi
作者机构：
[Jiang, Jing; Zhang, Lizhi; Zhang, Xi; Sun, Peibei] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
In this study, ZnO/BiOI heterostructures were synthesized by a facile chemical bath method at low temperature. Control of the morphology and constituents of the ZnO/BiOI heterostructures was realized by simply tuning the Bi/Zn molar ratios. The resulting ZnO/BiOI heterostructures exhibited high photocatalytic activity in the degradation of methyl orange under visible-light irradiation. The high photocatalytic activity of the ZnO/BiOI heterostructures was first attributed to their high surface area. Surface photovoltage spectroscopy and transient photovoltage measurements revealed that the photoinduced charge-transfer property of p-type BiOI could be improved greatly by coupling with n-type ZnO. The heterojunction at the interface between the BiOI and ZnO could efficiently reduce the recombination of photoinduced electron–hole pairs to increase the lifetime of charge carriers by 15 times and thus enhance the photocatalytic activity of the ZnO/BiOI heterostructures, in addition to the high surface area. This study reveals that the heterostructure construction between two different semiconductors plays a very important role in determining the dynamic properties of their photogenerated charge carriers and their photocatalytic properties.
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英文
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Nanostructured reduced graphene oxide/Fe2 O3 composite as a high-performance anode material for lithium ion batteries
作者：
Zhu, Xianjun;Zhu, Yanwu;Murali, Shanthi;Stollers, Meryl D.;Ruoff, Rodney S.*
期刊：
ACS Nano ,2011年5(4):3333-3338 ISSN：1936-0851
通讯作者：
Ruoff, Rodney S.
作者机构：
[Zhu, Yanwu; Stollers, Meryl D.; Zhu, Xianjun; Murali, Shanthi; Ruoff, Rodney S.] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA.;[Zhu, Yanwu; Stollers, Meryl D.; Zhu, Xianjun; Murali, Shanthi; Ruoff, Rodney S.] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA.;[Zhu, Xianjun] Cent China Normal Univ, Coll Chem, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Ruoff, Rodney S.] U;Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA.
关键词：
anode;Fe2O3;homogeneous precipitation;lithium ion battery;reduced graphene oxide
摘要：
Reduced graphene oxide/Fe2O3 composite was prepared using a facile two-step synthesis by homogeneous precipitation and subsequent reduction of the G-O with hydrazine under microwave irradiation to yield reduced graphene oxide (RG-O) platelets decorated with Fe2O3 nanoparticles. As an anode material for Li-ion batteries, the RG-O/Fe 2O3 composite exhibited discharge and charge capacities of 1693 and 1227 mAh/g, respectively, normalized to the mass of Fe 2O3 in the composite (and ∼1355 and 982 mAh/g, respectively, based on the total mass of the composite), with good cycling performance and rate capability. Characterization shows that the Fe 2O3 nanoparticles are uniformly distributed on the surface of the RG-O platelets in the composite. The total specific capacity of RG-O/Fe2O3 is higher than the sum of pure RG-O and nanoparticle Fe2O3, indicating a positive synergistic effect of RG-O and Fe2O3 on the improvement of electrochemical performance. The synthesis approach presents a promising route for a large-scale production of RG-O platelet/metal oxide nanoparticle composites as electrode materials for Li-ion batteries. © 2011 American Chemical Society.
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