Zn-Doped CdS Nanoarchitectures Prepared by Hydrothermal Synthesis: Mechanism for Enhanced Photocatalytic Activity and Stability under Visible Light
作者：
Yang, Fan;Yan, Nan-Nan;Huang, Sheng;Sun, Qiang;Zhang, Li-Zhi;...
期刊：
Journal of Physical Chemistry C ,2012年116(16):9078-9084 ISSN：1932-7447
通讯作者：
Yu, Ying
作者机构：
[Yang, Fan; Huang, Sheng; Yu, Ying; Yan, Nan-Nan] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Yang, Fan] Wuhan Text Univ, Sch Elect & Elect Engn, Wuhan 430073, Peoples R China.;[Sun, Qiang] Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Peoples R China.;[Zhang, Li-Zhi] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Yu, Ying] C;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
摘要：
Zn-doped CdS nanoarchitectures with different Zn content are synthesized by a simple hydrothermal method with water as the only solvent. The prepared samples are characterized by X-ray powder diffraction, scanning electron microscopy, UV–vis diffuse reflectance spectra, Brunauer–Emmett–Teller measurement, and X-ray photoelectron spectroscopy, while the photocatalytic activities are tested by photocatalytic degradation of rhodamine-B under visible-light irradiation. The results show that CdS with small amount of Zn doping can lead to an enhanced photocatalytic activity. Zn-doped CdS sample derived at 160 °C for 12 h with the molar ratio of Zn/Cd = 1:10 exhibits the best photocatalytic activity, which is much higher than that of pure CdS. Moreover, there is almost no loss of photocatalytic activity after four cycles of repeated experiments. So, Zn2+ doping indeed improves the photocatalytic activity and stability of CdS. Theoretical calculation indicates that Zn doping into a CdS crystal lattice can result in the shift of the valence band of CdS to a positive direction. It may lead to its higher oxidative ability than pure CdS, which is important for organic pollutant degradation under visible-light irradiation. Furthermore, the low formation energy for Zn-doped CdS systems demonstrates that the stability of CdS with Zn2+ doping can be improved. Experimentally and theoretically, this study will be useful for the improvement of photocatalytic activity and stability of CdS through the method of metal ion doping.
语种：
英文
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AgBr@Ag纳米光催化剂的微波快速非水液相制备及其室内光光催化活性研究
作者：
李浩;蒋静;张礼知
作者机构：
[李浩; 蒋静; 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：
第十三届全国太阳能光化学与光催化学术会议
会议时间：
2012-10-26
会议地点：
武汉
会议论文集名称：
第十三届全国太阳能光化学与光催化学术会议论文集
关键词：
光催化;银;溴化银;表面等离子共振
摘要：
<正>基于SPR(表面等离子共振)效应的半导体光催化剂的设计以及应用自2008年引起了很多科研工作者的关注,然而对基于此效应光催化过程的认识还存在不足。因此设计合成基于SPR效应的半导体光催化剂,并探究其光催化机理,具有一定的研究意义。
语种：
中文
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BiOCl晶面依赖光催化活性的第一性原理研究
作者：
赵焜;蒋静;张礼知
作者机构：
[赵焜; 蒋静; 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：
第十三届全国太阳能光化学与光催化学术会议
会议时间：
2012-10-26
会议地点：
武汉
会议论文集名称：
第十三届全国太阳能光化学与光催化学术会议论文集
关键词：
晶面暴露;第一性原理;光催化
摘要：
<正>当前,半导体光催化剂的晶面暴露受到了广泛关注与研究,因为暴露的晶面往往因存在特定的原子终端、不饱和配位、表面构象等而呈现出晶面依赖的光反应性能。BiOCl作为新型光催化剂,其晶面暴露的研究也取得了一定的进展。基于我们前期已有的(001)面和(010)面暴露的BiOCl晶体的研究,本文通过理论计算来探究BiOCl晶面依赖光催化活性的起源。
语种：
中文
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Design of a neutral three-dimensional electro-Fenton system with foam nickel as particle electrodes for wastewater treatment
作者：
Liu, Wei;Ai, Zhihui* ;Zhang, Lizhi
期刊：
Journal of Hazardous Materials ,2012年243:257-264 ISSN：0304-3894
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Liu, Wei; Ai, Zhihui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, 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：
Electro-Fenton;Foam nickel;Superoxide anion;Three-dimensional electrode
摘要：
In this work, we demonstrate a novel three-dimensional electro-Fenton system (3D-E-Fenton) for wastewater treatment with foam nickel, activated carbon fiber and Ti/RuO<inf>2</inf>-IrO<inf>2</inf> as the particle electrodes, the cathode, and the anode respectively. This 3D-E-Fenton system could exhibit much higher rhodamine B removal efficiency (99%) than the counterpart three-dimensional electrochemical system (33%) and E-Fenton system (19%) at neutral pH in 30min. The degradation efficiency enhancement was attributed to much more hydroxyl radicals generated in the 3D-E-Fenton system because foam nickel particle electrodes could activate molecular oxygen to produce O<inf>2</inf><sup>-</sup> via a single-electron transfer pathway to subsequently generate more H<inf>2</inf>O<inf>2</inf> and hydroxyl radicals. This is the first observation of molecular oxygen activation over the particle electrodes in the three-dimensional electrochemical system. These interesting findings could provide some new insight on the development of high efficient E-Fenton system for wastewater treatment at neutral pH. ©2012 Elsevier B.V.
语种：
英文
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Enhanced decomposition of dimethyl phthalate via molecular oxygen activated by Fe@Fe2 O3 /AC under microwave irradiation
作者：
Chen, Yiling;Ai, Zhihui* ;Zhang, Lizhi
期刊：
Journal of Hazardous Materials ,2012年235-236:92-100 ISSN：0304-3894
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Chen, Yiling; Ai, Zhihui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, 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：
Activated carbon;Dimethyl phthalate;Microwave irradiation;Molecular oxygen activation;[email protected]2O3
摘要：
In this study, we demonstrate that the decomposition of dimethyl phthalate under microwave irradiation could be greatly enhanced over Fe@Fe<inf>2</inf>O<inf>3</inf> nanowires supported on activated carbon (Fe@Fe<inf>2</inf>O<inf>3</inf>/AC). The great enhanced decomposition of dimethyl phthalate could be attributed to a unique microwave induced molecular oxygen activation process. Upon microwave irradiation, electrons could be transferred from activated carbon to zero-valent iron, and then react with molecular oxygen to form O<inf>2</inf><sup>-</sup> and OH radicals for the decomposition of dimethyl phthalate. The deactivation and the regeneration of Fe@Fe<inf>2</inf>O<inf>3</inf>/AC catalyst were systematically studied. We also found that microwave heating could accelerate the electron transferring from AC to Fe@Fe<inf>2</inf>O<inf>3</inf> to generate more reactive oxygen species for the decomposition of DMP than conventional oil bath heating. This novel molecular oxygen activation approach may find applications for wastewater treatment and drinking water purification. ©2012 Elsevier B.V.
语种：
英文
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New insight into daylight photocatalysis of AgBr@Ag: Synergistic effect between semiconductor photocatalysis and plasmonic photocatalysis
作者：
Jiang, Jing;Li, Hao;Zhang, Lizhi*
期刊：
CHEMISTRY-A EUROPEAN JOURNAL ,2012年18(20):6360-6369 ISSN：0947-6539
通讯作者：
Zhang, Lizhi
作者机构：
[Jiang, Jing; Zhang, Lizhi; Li, Hao] Cent China Normal Univ, Minist Educ, Key Lab Pesticide & Chem Biol, Coll Chem, Wuhan 430079, Peoples R China.;[Jiang, Jing] China W Normal Univ, Coll Chem & Chem Engn, Nanchong 637002, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Minist Educ, Key Lab Pesticide & Chem Biol, Coll Chem, Wuhan 430079, Peoples R China.
关键词：
microwave chemistry;photocatalysis;silver;silver bromide;surface plasmon resonance
摘要：
Noble metal nanoparticles (NPs) are often used as electron scavengers in conventional semiconductor photocatalysis to suppress electron-hole (e <sup>-</sup>-h<sup>+</sup>) recombination and promote interfacial charge transfer, and thus enhance photocatalytic activity of semiconductors. In this contribution, it is demonstrated that noble metal NPs such as Ag NPs function as visible-light harvesting and electron-generating centers during the daylight photocatalysis of AgBr@Ag. Novel Ag plasmonic photocatalysis could cooperate with the conventional AgBr semiconductor photocatalysis to enhance the overall daylight activity of AgBr@Ag greatly because of an interesting synergistic effect. After a systematic investigation of the daylight photocatalysis mechanism of AgBr@Ag, the synergistic effect was attributed to surface plasmon resonance induced local electric field enhancement on Ag, which can accelerate the generation of e<sup>-</sup>-h<sup>+</sup> pairs in AgBr, so that more electrons are produced in the conduction band of AgBr under daylight irradiation. This study provides new insight into the photocatalytic mechanism of noble metal/semiconductor systems as well as the design and fabrication of novel plasmonic photocatalysts. Copyright ©2012 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim.
语种：
英文
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Microstructure-dependent photoelectrochemical and photocatalytic properties of BiOI
作者：
Ge, Suxiang* ;Zhao, Kun;Zhang, Lizhi
期刊：
Journal of Nanoparticle Research ,2012年14(8):1-11 ISSN：1388-0764
通讯作者：
Ge, Suxiang
作者机构：
[Zhang, Lizhi; Ge, Suxiang] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Zhao, Kun] Xiangfan Univ, Coll Chem Engn & Food Sci, Xiangfan 441053, Peoples R China.
通讯机构：
[Ge, Suxiang] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
BiOI;Nanoplates;Microspheres;Microstructure;Photoelectrochemical property;Phtocatalytic property
摘要：
In this study, we demonstrate that the photoelectrochemical and photocatalytic properties of BiOI strongly depend on their microstructures. Compared to BiOI nanoplates with thickness <100 nm, BiOI nanoplate microspheres of 2–5 μm in size exhibited a superior photocatalytic methyl orange degradation performance, but their photocurrent was only 1/11 of that of BiOI nanoplates. The insights into the microstructure-dependent difference are discussed in detail. We think that the higher photocurrent of BiOI nanoplates film lies in more photogenerated electrons because of narrower band gap and less surface defects and better electron transport between nanoplates owing to good connectivity, while the superior photocatalytic degradation activity of BiOI nanoplate microspheres is attributed to their better methyl orange adsorption ability and abundant surface reaction sites as well as more powerful oxidative ability because of larger band gap. This study provides some clues to enhance photoelectrochemical property and photocatalytic activity of semiconductor materials.
语种：
英文
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Design of a visible light driven photo-electrochemical/electro-Fenton coupling oxidation system for wastewater treatment
作者：
Ding, Xing;Ai, Zhihui* ;Zhang, Lizhi
期刊：
Journal of Hazardous Materials ,2012年239-240:233-240 ISSN：0304-3894
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Ding, Xing; Ai, Zhihui] Cent China Normal Univ, Minisny Educ, Coll Chem, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Ai, Zhihui] C;Cent China Normal Univ, Minisny Educ, Coll Chem, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
关键词：
Electro-Fenton;Photo-electrochemical oxidation;Advanced oxidation technology;Wastewater treatment
摘要：
In this study, we report on a photo-electrochemical/electro-Fenton oxidation (PEC/EF) system by coupling visible light driven photo-electrochemical oxidation (PEC) and electro-Fenton oxidation (EF) in an undivided cell. Bi<inf>2</inf>WO<inf>6</inf> nanoplates deposited on FTO glass (Bi<inf>2</inf>WO<inf>6</inf>/FTO) and Fe@Fe<inf>2</inf>O<inf>3</inf> core-shell nanowires supported on activated carbon fiber (Fe@Fe<inf>2</inf>O<inf>3</inf>/ACF) were used as the anode and the cathode in the PEC/EF system, respectively. This novel PEC/EF system showed much higher activity than the single PEC and EF systems on degradation of rhodamine B in aqueous solution at natural pH. Moreover, the degradation and the instantaneous current efficiencies of the PEC/EF system were increased by 154% and 26% in comparison with the sum of those of single PEC and EF systems, respectively. These significant enhancements could be attributed to the synergetic effect from better separation of photo-generated carriers in the photo-anode and the transfer of photo-electrons to the oxygen diffusion cathode to generate more electro-generated H<inf>2</inf>O<inf>2</inf> and hydroxyl radicals on the Fenton cathode. The better separation of photo-generated carriers contribute more to the overall degradation enhancement than the photo-electrons generated H<inf>2</inf>O<inf>2</inf> and the subsequent Fenton reaction on the cathode during the PEC/EF process. ©2012 Elsevier B.V.
语种：
英文
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可见光光电催化/电-Fenton双池耦合氧化系统构建
作者：
丁星;艾智慧;张礼知
作者机构：
[丁星; 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,武汉,430079
会议名称：
中国化学会第28届学术年会
会议时间：
2012-01-01
会议地点：
中国四川成都
会议主办单位：
中国化学会
会议论文集名称：
中国化学会第28届学术年会第2分会场摘要集
关键词：
可见光光催化;电Fenton;光电子;罗丹明B
摘要：
<正>本文构建了一种新型高效处理污水的可见光催化/电Fenton双池耦合氧化系统。该系统由Bi2WO6/FTO作为阳极的可见光光电催化系统和Fe@Fe2O3/ACF作为阴极的电-Fenton系统组成(Bi2WO6/FTO||
语种：
中文
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新型中性三维电-Fenton水污染治理体系构建
作者：
刘伟;艾智慧;张礼知
作者机构：
[刘伟; 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,武汉,430079
会议名称：
中国化学会第28届学术年会
会议时间：
2012-4-13
会议地点：
成都
会议主办单位：
中国化学会
会议论文集名称：
中国化学会第28届学术年会论文集
关键词：
泡沫镍;三维电极;电Fenton;超氧负离子
摘要：
<正>本文报道了一种基于泡沫镍粒子电极、ACF和Ti/RuO2作为阴极和阳极的新型三维电-Fenton氧化系统。我们比较了该新型三维电-Fenton系统、传统三维电极氧化系统和电-Fenton氧化系统降解模拟污染物罗丹明B
语种：
中文
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铁诱导活化分子氧污染控制化学基础研究
作者：
张礼知;艾智慧;贾法龙
作者机构：
[张礼知; 艾智慧; 贾法龙] 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,武汉,430079
会议名称：
中国化学会第28届学术年会
会议时间：
2012-4-13
会议地点：
成都
会议主办单位：
中国化学会
会议论文集名称：
中国化学会第28届学术年会论文集
关键词：
分子氧活化;铁循环;污染控制化学
摘要：
<正>空气中高达17-21%的分子氧就是一种成本低廉和环境友好的氧化剂。利用空气中分子氧来有效氧化环境中难降解有机污染物被认为是一种最绿色低廉的环境污染控制和治理思路。然而,基态时氧气分子的特
语种：
中文
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甲酸根插层石墨相氮化碳可见光催化还原Cr（Ⅵ）的研究
作者：
董国辉;张礼知
作者机构：
[董国辉; 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：
第十三届全国太阳能光化学与光催化学术会议
会议时间：
2012-10-26
会议地点：
武汉
会议论文集名称：
第十三届全国太阳能光化学与光催化学术会议论文集
关键词：
氮化碳;六价铬;插层;光催化;可见光
摘要：
<正>Cr(Ⅵ)是一种高毒性的污染物,具有致癌并诱发基因突变的危害,然而Cr(Ⅲ)却是一种人体和动物体必需的微量元素,其毒性只有Cr(Ⅵ)的百分之一。石墨相氮化碳是一种新型光催化剂,可以在可见光的照射下将Cr(Ⅵ)还原为Cr(Ⅲ),但是其还原活性还很低。我们通过对石墨相氮化碳进行甲酸根插层处理提高了石墨相氮化碳对Cr(Ⅵ)的还原性能并且系统研究了其性能提高的机理。
语种：
中文
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Efficient visible light-driven photocatalytic degradation of pentachlorophenol with Bi2 O3 /TiO2-x B x
作者：
Su, Ke;Ai, Zhihui* ;Zhang, Lizhi
期刊：
Journal of Physical Chemistry C ,2012年116(32):17118-17123 ISSN：1932-7447
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Su, Ke; Ai, Zhihui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, 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.
摘要：
In this study, a new TiO2-based photocatalyst with both B doping and Bi2O3 coupling (Bi2O3/TiO2–xBx) was synthesized to degrade pentachlorophenol under visible light (λ > 420 nm) irradiation. The resulting Bi2O3/TiO2–xBx sample exhibited much higher photocatalytic performance than the counterparts with only B doping or Bi2O3 coupling or pure TiO2. This is because B doping could result in more visible light absorption to produce more photogenerated electron–hole pairs, while Bi2O3 coupling could favor the separation and transfer of photoinduced charge carriers to inhibit their recombination. We interestingly found that the visible light-driven degradation of pentachlorophenol was mainly attributed to photogenerated holes and ·O2– other than ·OH as reported previously because the hybridization of B 2p orbital and O 2p orbital could elevate the VB edge of Bi2O3/TiO2–xBx as compared to that of pure TiO2 and thus lower the oxidation ability of photogenerated holes, blocking the pathway of photogenerated holes induced oxidation of surface OH– and water to generate ·OH. The intermediates during the PCP photodegradation were systematically analyzed, ruling out the existence of high toxic polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans. These results reveal that the visible light-driven photocatalytic degradation of PCP over Bi2O3/TiO2–xBx is an effective and green method to remove highly toxic halogenated aromatic compounds.
语种：
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.
语种：
英文
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Efficient removal of heavy metal ions with biopolymer template synthesized mesoporous titania beads of hundreds of micrometers size
作者：
Wu, Na;Wei, Huanhuan;Zhang, Lizhi*
期刊：
Environmental Science & Technology ,2012年46(1):419-425 ISSN：0013-936X
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Wei, Huanhuan; Wu, Na] 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 demonstrated that mesoporous titania beads of uniform size (about 450 μm) and high surface area could be synthesized via an alginate biopolymer template method. These mesoporous titania beads could efficiently remove Cr(VI), Cd(II), Cr(III), Cu(II), and Co(II) ions from simulated wastewater with a facile subsequent solid-liquid separation because of their large sizes. We chose Cr(VI) removal as the case study and found that each gram of these titania beads could remove 6.7 mg of Cr(VI) from simulated wastewater containing 8.0 mg·L -1 of Cr(VI) at pH = 2.0. The Cr(VI) removal process was found to obey the Langmuir adsorption model and its kinetics followed pseudo-second-order rate equation. The Cr(VI) removal mechanism of titania beads might be attributed to the electrostatic adsorption of Cr(VI) ions in the form of negatively charged HCrO 4 - by positively charged TiO 2 beads, accompanying partial reduction of Cr(VI) to Cr(III) by the reductive surface hydroxyl groups on the titania beads. The used titania beads could be recovered with 0.1 mol·L -1 of NaOH solution. This study provides a promising micro/nanostructured adsorbent with easy solid-liquid separation property for heavy metal ions removal. © 2011 American Chemical Society.
语种：
英文
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铋自掺杂钨酸铋的合成及其可见光光催化性能的研究
作者：
蔡永双;张礼知
作者机构：
[蔡永双; 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：
第十三届全国太阳能光化学与光催化学术会议
会议时间：
2012-10-26
会议地点：
武汉
会议论文集名称：
第十三届全国太阳能光化学与光催化学术会议论文集
关键词：
钨酸铋;五氯酚钠;自掺杂;光催化
摘要：
<正>半导体光催化在解决环境问题和能源危机方面具有潜在的应用而受到广泛的关注。Bi2WO6因其禁带宽度较窄,近来受到普遍关注,但因其电子空穴对易复合,Bi2WO6的活性相对较低。因此,提高Bi2WO6的可见光光催化活性尤为重要。我们发现自掺杂可以有效地提高Bi2WO6可见光光催化活性。通过改变反应物中铋源的量,采用水热方法实现了钨酸铋的自掺杂。图1（a）为各钨酸铋
语种：
中文
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亚铁-四聚磷酸配合物诱导活化分子氧降解有机污染物
作者：
王丽;张礼知
作者机构：
[王丽; 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,湖北武汉,430079
会议名称：
中国化学会第28届学术年会
会议时间：
2012-4-13
会议地点：
成都
会议主办单位：
中国化学会
会议论文集名称：
中国化学会第28届学术年会论文集
关键词：
铁-四聚磷酸配合物;罗丹明B;分子氧活化
摘要：
<正>本文利用亚铁-四聚磷酸钠配体在常温常压下诱导活化分子氧降解模型污染物罗丹明B。该降解过程非常快速,一小时内降解效率可达80%以上。研究表明:罗丹明B降解取决于溶液中亚铁浓度,而增加配体的
语种：
中文
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BiOX结构调控的可见光光催化机制
作者：
艾智慧;赵焜;张礼知
作者机构：
[艾智慧; 赵焜; 张礼知] 华中师范大学化学学院
会议名称：
第十三届全国太阳能光化学与光催化学术会议
会议时间：
2012-10-26
会议地点：
武汉
会议论文集名称：
第十三届全国太阳能光化学与光催化学术会议论文集
关键词：
结构调控;光催化
摘要：
<正>卤化氧铋（BiOX,X=F、Cl、Br、I）是一种新型的半导体材料,具有独特的电子结构、良好的光学性质和催化性能,可以很好地响应可见光,因而具有很高的催化活性,且随着卤素原子序数的增加光催化活性逐渐增强。BiOX成为光催化剂研究的一个新方向。本文介绍新型铋系光催化剂BiOX（X=Cl、Br、I）分等级微球、新型异质结型光催化剂BiOI/TiO2、自
语种：
中文
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Aerosol flow synthesis of N, Si-codoped TiO2 hollow microspheres with enhanced visible-light driven photocatalytic performance
作者：
Ai, Zhihui* ;Gao, Zhiting;Su, Ke;Ho, Wingkei;Zhang, Lizhi
期刊：
Catalysis Communications ,2012年29:189-193 ISSN：1566-7367
通讯作者：
Ai, Zhihui
作者机构：
[Zhang, Lizhi; Gao, Zhiting; Su, Ke; Ai, Zhihui] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Ho, Wingkei] Hong Kong Inst Educ, Dept Sci & Environm Studies, Tai Po, 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：
Aerosol flow synthesis;N, Si-codoped TiO2;Visible light
摘要：
In this study, porous N, Si-codoped TiO2 hollow microsphere photocatalysts have been prepared by a facile aerosol flow synthesis method. The prepared photocatalysts were characterized by XRD, SEM, TEM, UV-vis DRS, and XPS. The results indicated that both nitrogen doping and formation of TiOSi bond happened in the N, Si-codoped TiO2 hollow microspheres, leading to an enhanced visible-light driven photocatalytic performance on degradation of salicylic acid compared with pure TiO2 and single N or Si doped TiO2 counterpart catalysts. © 2012 Elsevier B.V.
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.
语种：
英文
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