Magnetic solid-phase extraction followed by high performance liquid chromatography for determination of hexanal and heptanal in human urine
作者：
Song, Dandan;Gu, Yanqin;Liang, Lu;Ai, Zhihui;Zhang, Lizhi;...
期刊：
ANALYTICAL METHODS ,2011年3(6):1418-1423 ISSN：1759-9660
通讯作者：
Xu, Hui
作者机构：
[Song, Dandan; Zhang, Lizhi; Liang, Lu; Gu, Yanqin; Ai, Zhihui; Xu, Hui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Xu, Hui] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
In this work, a new magnetic solid-phase extraction (MSPE) method based on C8-amine-Fe3O4 magnetic nanoparticles (MNPs) was developed for the determination of aldehyde biomarkers (hexanal and heptanal) in human urine samples. Hexanal and heptanal were derivatized with 2,4- dinitrophenylhydrazine (DNPH) in an acidic solution and then the formed aldehyde derivatives were extracted by the MNPs. After eluting and simple magnetic separation, the supernatant containing the two target analytes was transferred for HPLC analysis. The effects of various experimental parameters on the derivatization and extraction efficiency were investigated and optimized. Under the optimal conditions, good linearity was obtained in the concentration range of 0.005-5 μmol L-1 (r > 0.9982). The limits of detection (LOD) for hexanal and heptanal were 1.87 and 0.78 nmol L-1, respectively. The average recoveries of urine samples of healthy humans ranged from 82.5% to 99.4% with the inter- and intra-day precisions (n = 6) less than 8.4%. Because of the excellent magnetic responsibility and high dispersibility of the MNPs, the proposed method was shown to be simple and rapid. Besides, this method possesses advantages such as low-cost, efficiency and good reproducibility. © 2011 The Royal Society of Chemistry.
语种：
英文
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异相Fenton及光电催化氧化污染控制技术
作者：
张礼知
作者机构：
[张礼知] 华中师范大学化学学院农药与化学生物学教育部重点实验室
会议名称：
第六届全国环境化学学术大会
会议时间：
2011-09-21
会议地点：
上海
会议论文集名称：
第六届全国环境化学学术大会论文集
关键词：
光电催化氧化;污染控制;废水处理;量子效率
摘要：
<正>Fenton法（Fe/H2O2）和光催化氧化法（PCO）是目前AOP研究比较活跃的两个部分。Fenton反应在实际废水处理过程中也存在如pH的应用范围较窄（2.15～5.15）、H2O2的利用率较低、能耗较大等缺点;虽然改进的光-Fenton反应或电-Fenton反应能提高可见光的利用率和反应效率,尤其对于有机染料的可见光降解十分有效,但依然存在诸如能耗较大,以及受体系pH值等影响的
语种：
中文
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Efficient visible light driven photocatalytic removal of NO with aerosol flow synthesized B, N-codoped TiO2 hollow spheres
作者：
Ding, Xing;Song, Xiao;Li, Pengna;Ai, Zhihui;Zhang, Lizhi*
期刊：
Journal of Hazardous Materials ,2011年190(1-3):604-612 ISSN：0304-3894
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Li, Pengna; Ding, Xing; Song, Xiao; Ai, Zhihui] 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.
关键词：
Boron;Codoped;NO removal;Nitrogen;Photocatalysis;TiO2
摘要：
In this study, we demonstrate that aerosol assisted flow synthesized B, N-codoped TiO<inf>2</inf> photocatalyst possesses superior photocatalytic activity to pure and single element doped counterparts on the degradation of NO in a flow system under both simulated solar light and visible light irradiation. Characterization results revealed that B, N-codoped TiO<inf>2</inf> photocatalyst was composed of hollow microspheres. Boron and nitrogen were in the form of Ti-O-B and N-Ti-O structures, respectively. The introduction of B and N into the TiO<inf>2</inf> lattice could effectively tune the band gap of TiO<inf>2</inf> and extend its optical response to the visible-light region. The synergistic effect of B and N codoping on visible light driven photocatalytic activity enhancement of TiO<inf>2</inf> was discussed on the basis of experimental results. ©2011 Elsevier B.V.
语种：
英文
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Efficient removal of heavy metal ions from aqueous systems with the assembly of anisotropic layered double hydroxide nanocrystals@carbon nanosphere
作者：
Gong, Jingming* ;Liu, Ting;Wang, Xiaoqing;Hu, Xianluo;Zhang, Lizhi
期刊：
Environmental Science & Technology ,2011年45(14):6181-6187 ISSN：0013-936X
通讯作者：
Gong, Jingming
作者机构：
[Zhang, Lizhi; Gong, Jingming; Liu, Ting; Wang, Xiaoqing] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.;[Hu, Xianluo] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mold Technol, Coll Mat Sci & Engn, Wuhan 430074, Peoples R China.
通讯机构：
[Gong, Jingming] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
We report on the efficient removal of heavy metal ions from simulated wastewater with a nanostructured assembly. The nanoassembly was obtained via direct assembling the performed anisotropic layered double hydroxide nanocrystals (LDH-NCs) onto the surface of carbon nanospheres (labeled as LDH-NCs@CNs). It was found that the maximum adsorption capacity of the nanoassembly toward Cu<sup>2+</sup> was ∼19.93 mg g<sup>-1</sup> when the initial Cu<sup>2+</sup> concentration was 10.0 mg L<sup>-1</sup>, displaying a high efficiency for the removal of heavy metal ions. The Freundlich adsorption isotherm was applicable to describe the removal processes. Kinetics of the Cu<sup>2+</sup> removal was found to follow pseudo-second-order rate equation. Furthermore, the as-prepared building unit of the assembly, including LDH-NCs, CNs, and the assembly, as well as Cu<sup>2+</sup>-adsorbed assembly, were carefully examined by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), nitrogen sorption measurements, and X-ray photoelectron spectroscopy (XPS). Based on the characterization results, a possible mechanism of Cu<sup>2+</sup> removal with the assembly of LDH-NCs@CNs was proposed. Comparison experiments show that the adsorption capacity of the resulting LDH-NCs@CNs assembly was much higher than its any building unit alone (CNs or LDH-NCs), exhibiting the deliberation of the assembly on water decontamination. This work provides a very efficient, fast and convenient approach for exploring promising nanoassembly materials for water treatment. ©2011 American Chemical Society.
语种：
英文
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Rapid catalytic microwave method to damage microcystis aeruginosa with FeCl3 -loaded active carbon
作者：
Li, Pengna;Zhang, Lizhi
* ;Wang, Weiwei;Su, Jiali;Feng, Lingling
（ 期刊：
Environmental Science & Technology ,2011年45(10):4521-4526 ISSN：0013-936X
作者机构：
[Feng, Lingling; Zhang, Lizhi; Li, Pengna; Su, Jiali; Wang, Weiwei] 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 recent years, effective methods for cyanobacterial blooms treatment have been an important issue. In this study, we demonstrated a rapid catalytic microwave method to deal with Microcystis aeruginosa with FeCl 3-loaded active carbon. Microcystis aeruginosa damage process was monitored by measuring optical density, chlorophyll-a content, superoxide dismutase activity, l-glutathione content, and turbidity of the treated Microcystis aeruginosa suspension. It was found that this method could quickly and efficiently induce the degradation of Microcystis aeruginosa. On the basis of control experiments and characterization results, we attributed the excellent catalytic performance to the synergy effect between hole-doping of the catalyst and hot spot of microwave irradiation. This work provides a fast and green treatment method for cyanobacterial blooms. © 2011 American Chemical Society.
语种：
英文
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Visible Light Photocatalysis of BiOI and Its Photocatalytic Activity Enhancement by in Situ Ionic Liquid Modification
作者：
Wang, Yunan;Deng, Kejian;Zhang, Lizhi*
期刊：
Journal of Physical Chemistry C ,2011年115(29):14300-14308 ISSN：1932-7447
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Wang, Yunan] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.;[Deng, Kejian] S Central Univ Nationalities, Key Lab Catalysis & Mat Sci, State Ethn Affairs Commiss, Wuhan 430074, Hubei Province, Peoples R China.;[Deng, Kejian] S Central Univ Nationalities, Minist Educ, Wuhan 430074, Hubei Province, 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, we investigate the photocatalysis mechanism of BiOI in detail and therefore demonstrate that the photocatalytic activity of BiOI could be enhanced greatly by in situ modification of an ionic liquid [Bmim]I (1-buty-3-methylimidazolium iodide). The ionic liquid modified BiOI (IL-BiOI) was prepared by reacting bismuth nitrate with [Bmim]I in water at 70 °C, where the ionic liquid could act as both iodine source and surface modified agent. On degradation of methyl orange (MO) under visible light irradiation (λ > 420 nm), IL-BiOI photocatalyst exhibited superior photocatalytic activity to the unmodified counterpart synthesized in the absence of [Bmim]I. The effects of ionic liquid modification on the photocatalytic activity enhancement were systematically investigated. We found that IL modification could trap the photoexcited electron at conduction band of BiOI to inhibit the recombination of photoinduced electron–hole pairs and thus enhance its photocatalytic activity on the degradation of organic pollutants.
语种：
英文
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NO treated TiO2 as an efficient visible light photocatalyst for NO removal
作者：
Ai, Zhihui* ;Zhu, Linli;Lee, Shuncheng;Zhang, Lizhi
期刊：
Journal of Hazardous Materials ,2011年192(1):361-367 ISSN：0304-3894
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Zhu, Linli; Ai, Zhihui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Lee, Shuncheng; Ai, Zhihui] Hong Kong Polytech Univ, Res Ctr Environm Technol & Management, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China.
通讯机构：
[Ai, Zhihui] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Nitrogen doped TiO2;NO;Photocatalysis;Visible light
摘要：
In this study, we report that nitrogen doped TiO<inf>2</inf> could be achieved via thermal treatment of Degussa P25 TiO<inf>2</inf> in NO atmosphere directly (P25-NO). The samples were characterized with XRD, XPS, and FT-IR. The characterization results suggested that nitrogen species were interstitially doped in P25-NO during the NO thermal treatment process. In comparison with P25, the P25-NO exhibited significantly enhanced photocatalytic activities under visible light irradiation (λ>420nm) for gaseous NO removal. On the basis of electronic band structure theory, we proposed a possible mechanism for the enhanced visible light driven photocatalytic oxidation process over the interstitial N doping P25-NO samples. This work could not only deepen understanding of the enhanced photoactivity originated from interstitial N doping in TiO<inf>2</inf>, but also provide a facile route to prepare nitrogen doped TiO<inf>2</inf> for environmental and energy applications. ©2011 Elsevier B.V.
语种：
英文
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核壳结构Fe@Fe2O3纳米线异相催化Na2S2O8氧化降解甲基橙的研究
作者：
艾智慧;张礼知
作者机构：
[艾智慧; 张礼知] 华中师范大学化学学院农药与化学生物学教育部重点实验室
会议名称：
第六届全国环境化学学术大会
会议时间：
2011-09-21
会议地点：
上海
会议论文集名称：
第六届全国环境化学学术大会论文集
关键词：
甲基橙;核壳结构;有机污染物;过硫酸钠;纳米线;异相催化
摘要：
<正>过硫酸钠易于储存,运输,水溶性好,氧化性强,利用过硫酸盐活化技术氧化去除水中有机污染物,是一种新型的高级氧化技术。本文通过对不同的种类的铁源活化过硫酸钠的效果进行比较,证明铁纳米线Fe@Fe2O3具有更好的活化效果,并优化了铁纳米线活化Na2S2O8的各种反应条件参数,最后提出反应的机理。1.实验部分将0.75 g FeCl3·6H2O溶于250 mL水,1.5 gNaBH4
语种：
中文
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Efficient visible light driven photocatalytic removal of RhB and NO with low temperature synthesized in(OH)xSy hollow nanocubes: A comparative study
作者：
Ge, Suxiang;Zhang, Lizhi*
期刊：
Environmental Science & Technology ,2011年45(7):3027-3033 ISSN：0013-936X
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Ge, Suxiang] 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 work, we report that RhB and NO could be effectively removed under visible light with hollow In(OH)xSy nanocubes fabricated at a low temperature of 80 °C. The photocatalytic experiments revealed that these low temperature synthesized hollow In(OH)xSy nanocubes were more efficient than P25 and In(OH)xSy counterpart hydrothermally synthesized at 180 °C (In(OH)xS y-180). The porous structures, larger surface area, and new valence band of low temperature synthesized hollow In(OH)xSy nanocubes were thought to account for their superior photocatalytic activity. Among all the In(OH)xSy samples, the one with original S/In ratio of 0.500 in synthetic solution exhibited the highest photocatalytic removal efficiencies of RhB, while the other with original S/In ratio of 1.000 removed NO most efficiently. We systematically studied the photocatalytic process of RhB on In(OH)xSy and analyzed their different photocatalytic performances on removing RhB and NO. This study reveals that these hollow In(OH)xSy nanocubes are promising for environmental remediation. © 2011 American Chemical Society.
语种：
英文
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Low temperature synthesis of δ-Bi2O3 solid spheres and their conversion to hierarchical BiOI nests via the Kirkendall effect
作者：
Liu, Manying;Zhang, Lizhi* ;Wang, Kewei;Zheng, Zhi
期刊：
CrystEngComm ,2011年13(17):5460-5466 ISSN：1466-8033
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Wang, Kewei; Liu, Manying] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Zheng, Zhi; Liu, Manying] Xuchang Univ, Inst Surface Micro & Nano Mat, Xuchang 461000, 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：
The Kirkendall effect has gained intense attention and wide acceptance in nanoscience and nanotechnology because it can result in porosity or deformation in the case of the alloying or oxidation of metals. In this work, we report a facile approach to prepare δ-Bi2O3 solid spheres and further convert them to hierarchical BiOI nests for the first time through a solvothermal reaction at low temperature. The δ-Bi2O 3 and BiOI samples obtained were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The formation mechanism has been proposed by emphasizing the Kirkendall effect. We also found that the template of δ-Bi2O3 solid spheres was initially formed by surfactant oleylamine induction. Anion exchange has been confirmed to occur in the reaction involving the Kirkendall effect. © The Royal Society of Chemistry 2011.
语种：
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.
语种：
英文
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Doping iodine in CdS for pure hexagonal phase, narrower band gap, and enhanced photocatalytic activity
作者：
Ai, Zhihui;Wang, Man;Zheng, Zhi* ;Zhang, Lizhi
期刊：
Journal of Materials Research ,2011年26(5):710-719 ISSN：0884-2914
通讯作者：
Zheng, Zhi
作者机构：
[Zhang, Lizhi; Wang, Man; Ai, Zhihui] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.;[Zheng, Zhi] Xuchang Univ, Inst Surface Micro & Nano Mat, Xuchang 461000, Peoples R China.
通讯机构：
[Zheng, Zhi] X;Xuchang Univ, Inst Surface Micro & Nano Mat, Xuchang 461000, Peoples R China.
关键词：
Chemical Synthesis;Crystal Growth;Hydrothermal
摘要：
Iodine-doped CdS (I-CdS) with controllable morphologies, pure hexagonal phase, and enhanced photocatalytic activity was synthesized via a mild hydrothermal process with polyvinylpyrrolidone-iodine (PVP-I) acting as the template-directing reagent and iodine source. The morphologies of the as-prepared samples could be adjusted from irregular cone-shaped particles to uneven microspheres, further to smooth microspheres, while the crystal phases were also transformed from mixed cubic and hexagonal phases to pure hexagonal phase upon increasing the molar ratio of PVP-I to Cd2+ from 0 to 2. The iodine doping could result in red shift of the absorption edges and band gap narrowing of the I-CdS samples. Importantly, a critical point of 0.5 of molar ratio of PVP-I to Cd2+ for iodine doping was found to be necessary for obtaining a pure hexagonal phase that facilitates the improving of photocatalytic activity on the degradation of Rhodamine B in aqueous solution under visible light irradiation.
语种：
英文
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An enzymeless organophosphate pesticide sensor using Au nanoparticle-decorated graphene hybrid nanosheet as solid-phase extraction
作者：
Gong, Jingming* ;Miao, Xingju;Zhou, Ting;Zhang, Lizhi
期刊：
Talanta ,2011年85(3):1344-1349 ISSN：0039-9140
通讯作者：
Gong, Jingming
作者机构：
[Zhang, Lizhi; Gong, Jingming; Zhou, Ting; Miao, Xingju] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Monodispersed Au nanoparticles;Graphene;Solid phase extraction (SPE);Stripping voltammetric analysis;Methyl parathion
摘要：
A sensitive enzymeless organophosphate pesticides (OPs) sensor is fabricated by using Au nanoparticles (AuNPs) decorated graphene nanosheets (GNs) modified glassy carbon electrode as solid phase extraction (SPE). Such a nanostructured composite film, combining the advantages of AuNPs with two dimensional GNs, dramatically facilitates the enrichment of nitroaromatic OPs onto the surface and realizes their stripping voltammetric detection of OPs by using methyl parathion (MP) as a model. The stripping voltammetric performances of captured MP were evaluated by cyclic voltammetric and square-wave voltammetric analysis. The combination of the nanoassembly of AuNPs-GNs, SPE, and stripping voltammetry provides a fast, simple, and sensitive electrochemical method for detecting nitroaromatic OPs. The stripping analysis is highly linear over the MP concentration ranges of 0.001-0.1and 0.2-1.0 μg mL<sup>-1</sup> with a detection limit of 0.6 ng mL<sup>-1</sup>. This designed enzymeless sensor exhibits good reproducibility and acceptable stability. ©2011 Elsevier B.V. All rights reserved.
语种：
英文
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Microwave-induced formation of platinum nanostructured networks with superior electrochemical activity and stability
作者：
Jia, Falong;Wang, Fangfang;Lin, Yun;Zhang, Lizhi*
期刊：
CHEMISTRY-A EUROPEAN JOURNAL ,2011年17(51):14603-14610 ISSN：0947-6539
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Wang, Fangfang; Lin, Yun; Jia, Falong] 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.
关键词：
crystal growth;electrocatalysis;microwave chemistry;nanostructures;platinum
摘要：
Platinum nanostructured networks (PNNs) can be synthesized through the chemical reduction of H2PtCl6 by benzyl alcohol under microwave irradiation without the introduction of any surfactants, templates, or seeds. The synthesis route utilizes benzyl alcohol as both the reductant and the structure-directing agent, and thus, the process is particularly simple and highly repeatable. The formation of the PNN structure was ascribed to the collision-induced fusion of Pt nanocrystals owing to the cooperative functions of microwave irradiation and benzyl alcohol. Compared with a commercial Pt/C catalyst, the as-prepared PNNs possessed superior electrochemical activity and stability on the oxidation of methanol because of the unique 3D nanostructured networks and abundant defects formed during the assembly process. This study may provide a facile microwave-induced approach for the synthesis of other 3D nanostructured noble metals or their alloys.
语种：
英文
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Rapid microwave-assisted nonaqueous synthesis and growth mechanism of AgCl/Ag, and its daylight-driven plasmonic photocatalysis
作者：
Jiang, Jing;Zhang, Lizhi*
期刊：
CHEMISTRY-A EUROPEAN JOURNAL ,2011年17(13):3710-3717 ISSN：0947-6539
通讯作者：
Zhang, Lizhi
作者机构：
[Jiang, Jing; Zhang, Lizhi] 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.
关键词：
microwave chemistry;photocatalysis;silver;silver chloride;surface plasmon resonance
摘要：
We report on a rapid microwave-assisted nonaqueous synthesis and the growth mechanism of AgCl/Ag with controlled size and shape. By rationally varying the reaction temperature and the microwave irradiation time, we achieved the transformation of nanocubes to rounded triangular pyramids by a combined process of "oriented attachment" and Ostwald ripening. The surface plasmon resonance (SPR) properties of the as-prepared AgCl/Ag have been found to be somewhat dependent on the size, morphology, and composition. The as-prepared AgCl/Ag exhibits high photocatalytic activity and good reusability for decomposing organic pollutants (such as methyl orange (MO), rhodamine B (RhB), and pentachlorophenol (PCP)) under indoor artificial daylight illumination (ca. 1 mW cm<sup>-2</sup>). The AgCl/Ag has also been found to display a superior ability to harvest diffuse indoor daylight (ca. 5 mW cm<sup>-2</sup>), and could complete the degradation of 10 mg L<sup>-1</sup> MO within 15 min. Experiments involving the trapping of active species have shown that the photocatalytic degradation of organic pollutants in the AgCl/Ag system may proceed through direct hole transfer. This study has revealed that plasmonic daylight photocatalysis may open a new frontier for indoor pollutant control around the clock under fluorescent lamp illumination. Daylight plasmonic photocatalysis comes true! A daylight-driven AgCl/Ag plasmonic photocatalyst has been directly synthesized by a facile and rapid microwave-assisted nonaqueous route. The AgCl/Ag exhibits excellent daylight-driven photocatalytic activity for the degradation of various organic compounds (see picture), and is very promising for the degradation of organic pollutants around the clock under fluorescent lamp illumination. ©2011 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim.
语种：
英文
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Microwave Catalytic Molecular Oxygen Activation to Degrade Dimethyl Phthalate over Fe@Fe2O3/AC
作者：
Yiling Chen;Zhihui Ai;Lizhi Zhang
作者机构：
Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079
会议名称：
第七届全国环境催化与环境材料学术会议
会议时间：
2011-08-12
会议地点：
北京
会议论文集名称：
第七届全国环境催化与环境材料学术会议论文集
关键词：
dimethyl phthalate;molecular oxygen activation;microwave irradiation;Fe@Fe2O3;AC
摘要：
We demonstrate that dimethyl phthalate (DMP) could be rapidly decomposed by microwave irradiation (MW) over Fe@Fe2O3/activated carbon (Fe@Fe2O3/AC) catalyst within 2 min.Active species trapping experiments revealed that the catalytic microwave decomposition of dimethyl phthalate was attributed to an unique microwave induced molecular oxygen activation process.
语种：
英文
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Sol-gel nanocasting synthesis of patterned hierarchical LaFeO3 fibers with enhanced catalytic CO oxidation activity
作者：
Li, Pengna;Hu, Xianluo* ;Zhang, Lei;Dai, Hongxing;Zhang, Lizhi
期刊：
Nanoscale ,2011年3(3):974-976 ISSN：2040-3364
通讯作者：
Hu, Xianluo
作者机构：
[Zhang, Lizhi; Li, Pengna] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Hu, Xianluo] Huazhong Univ Sci & Technol, Coll Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China.;[Dai, Hongxing; Zhang, Lei] Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China.
通讯机构：
[Hu, Xianluo] H;Huazhong Univ Sci & Technol, Coll Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China.
摘要：
Hierarchical LaFeO<inf>3</inf> fibers were prepared by a sol-gel nanocasting method using a cotton cloth as the template. The resulting LaFeO<inf>3</inf> fibers inherited the initial network morphology of the template very well and showed enhanced catalytic CO oxidation activity and satisfactory stability compared to the counterpart particles prepared by the conventional sol-gel method. ©2011 The Royal Society of Chemistry.
语种：
英文
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Aerosol-assisted flow synthesis of WxTi1−xO2 solid solution spheres with enhanced photocatalytic activity
作者：
Ai, Zhihui* ;Song, Xiao;Huang, Yu;Zhang, Lizhi;Lee, Shuncheng
期刊：
Applied Surface Science ,2011年257(10):4725-4730 ISSN：0169-4332
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Song, Xiao; Ai, Zhihui] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.;[Lee, Shuncheng; Huang, Yu; Ai, Zhihui] Hong Kong Polytech Univ, Dept Civil & Struct Engn, Res Ctr Environm Technol & Management, Hong Kong, Hong Kong, Peoples R China.;[Ai, Zhihui] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, 152 Luoyu Rd, Wuhan 430079, Peoples R China.
通讯机构：
[Ai, Zhihui] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, 152 Luoyu Rd, Wuhan 430079, Peoples R China.
关键词：
Photocatalysis;Solid solution;Tungsten;TiO2
摘要：
In this paper, W x Ti 1-x O 2 solid solutions (x = 0.000, 0.005, 0.010, 0.015, and 0.020) microspheres were synthesized with an aerosol-assisted flow synthesis method. The resulting samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen sorption, UV-vis diffuse reflectance spectrum (DRS) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activities of the as-prepared catalysts were measured by the degradation of rhodamine B (RhB) under visible light irradiation (λ ≥ 420 nm). All the solid solutions exhibited higher photocatalytic activities than pure TiO 2 and the W 0.015 Ti 0.985 O 2 solid solution possessed the highest photocatalytic activity. The degradation constant of RhB on W 0.015 Ti 0.985 O 2 solid solution catalyst was about 15 times of that of the pure TiO 2 and 25 times of that of Degussa P25, respectively. This study provides an effective method to prepare visible light photocatalysts on a large scale. © 2011 Elsevier B.V. All rights reserved.
语种：
英文
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Facile Microwave-Assisted Synthesis and Magnetic and Gas Sensing Properties of Fe(3)O4 Nanoroses
作者：
Ai, Zhihui;Deng, Kejian;Wan, Qianfen;Zhang, Lizhi* ;Lee, Shuncheng
期刊：
Journal of Physical Chemistry C ,2010年114(14):6237-6242 ISSN：1932-7447
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Ai, Zhihui; Wan, Qianfen] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Lee, Shuncheng; Ai, Zhihui] S Cent Univ Nationalities, Minist Educ, Wuhan 430074, Hubei Province, Peoples R China.;[Lee, Shuncheng; Ai, Zhihui] State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Wuhan 430074, Hubei Province, Peoples R China.;[Deng, Kejian] Hong Kong Polytech Univ, Res Ctr Environm Technol & Management, Dept Civil & Struct Engn, Hong Kong, Hong Kong, 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：
In this study, we developed a facile microwave-assisted ethylene glycol approach to synthesize Fe<inf>3</inf>O<inf>4</inf> nanoroses in the presence of the PEO-PPO-PEO block copolymer (P123). The resulting products were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and Fourier transform infrared absorption spectroscopy (FT-IR). The characterization results revealed that the Fe<inf>3</inf>O<inf>4</inf> nanoroses were formed by P123 directed assembly of nanoparticles under microwave irradiation. Besides size and morphology-dependent magnetic properties, the as-prepared nanocrystalline Fe<inf>3</inf>O <inf>4</inf> nanoroses exhibited high sensitivity and good reversibility for gas-sensing of ethanol vapor at room temperature. Our results suggest these Fe<inf>3</inf>O<inf>4</inf> nanoroses are promising materials for magnetic and sensing applications. ©2010 American Chemical Society.
语种：
英文
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One-pot template-free synthesis, formation mechanism, and lithium ions storage property of hollow SnO2 microspheres
作者：
Xiao, Lifen* ;Li, Jianping;Li, Qiao;Zhang, Lizhi
期刊：
Journal of Solid State Electrochemistry ,2010年14(6):931-936 ISSN：1432-8488
通讯作者：
Xiao, Lifen
作者机构：
[Li, Qiao; Zhang, Lizhi; Xiao, Lifen; Li, Jianping] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Xiao, Lifen] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Porous materials;Nanocrystalline materials;Ostwald ripening;Hollow SnO2;Lithium ion battery;Anode
摘要：
In this work, we report a facile one-pot template-free approach to prepare hollow rutile SnO<inf>2</inf> microspheres using SnCl<inf>4</inf> as the precursor in a condensed H<inf>2</inf>SO<inf>4</inf>-EtOH mixed solvent. The formation mechanism of the hollow microspheres was proposed on the basis of characterizations. First, the controlled hydrolysis and condensation of SnCl<inf>4</inf> to SnO<inf>2</inf> nanocrystals was realized by the formation of water via catalytic dehydration of EtOH in the presence of condensed H <inf>2</inf>SO<inf>4</inf>. These SnO<inf>2</inf> nanocrystals rapidly aggregated to form microspheres in order to minimize their surface energies. Then, Ostwald ripening mechanism governed the subsequent growth and recrystallization of the nanocrystals to form the hollow structure. The resulting hollow SnO<inf>2</inf> microspheres exhibited better cycle performance than the pristine SnO<inf>2</inf> nanoparticles when used as anode materials in lithium ion batteries. ©2009 Springer-Verlag.
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英文
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