Enhanced photoelectrocatalytic performance of titanium dioxide/carbon cloth based photoelectrodes by graphene modification under visible-light irradiation
文献类型：期刊论文
| 作者 | Zhai, Chunyang1; Zhu, Mingshan2; Ren, Fangfang1; Yao, Zhangquan1; Du, Yukou1; Yang, Ping1 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2013-12-15 |
| 卷号 | 263页码:291-298 |
| 关键词 | Photoelectrocatalysis Graphene Tio2 Visible Light Dye Degradation |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2013.09.013 |
| 英文摘要 | Reduced graphene oxide nanosheets modified TiO2 nanospheres on carbon cloth electrodes (RGO/TiO2/CC) have been fabricated and used for photoelectrocatalytic (PEC) degradation of organic pollutants under visible light irradiation. The fabricated RGO/TiO2/CC electrodes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectroscopy. Compared with TiO2/CC electrode, the RGO modified TiO2/CC electrode evidently shows improved visible light-driven PEC activity for degradation of an often used model pollutant, methylene blue (MB). Moreover, the efficiency of MB degradation by PEC process (0.0133 min(-1).) is about 13-fold and 7-fold faster than that of electrochemical process (0.001 min-1) and photocatalytic process (0.0018 min(-1)), respectively. The improved catalytic activity for PEC degradation of MB pollutants could be attributed to the existence of RGO, which extends the absorption onset of TiO2 to longer wavelength direction and promotes the separation of electron-hole pairs generated under visible light irradiation. The promotion effect on the electron-hole separation is supported by photocurrent and electrochemical impedance measurements. In addition, a synergetic effect of photocatalysis and electrocatalysis is involved in the PEC process, by which the recombination of photogenerated electron-hole pairs is significantly suppressed. (C) 2013 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000330814600005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/53577]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Du, Yukou |
| 作者单位 | 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhai, Chunyang,Zhu, Mingshan,Ren, Fangfang,et al. Enhanced photoelectrocatalytic performance of titanium dioxide/carbon cloth based photoelectrodes by graphene modification under visible-light irradiation[J]. JOURNAL OF HAZARDOUS MATERIALS,2013,263:291-298. |
| APA | Zhai, Chunyang,Zhu, Mingshan,Ren, Fangfang,Yao, Zhangquan,Du, Yukou,&Yang, Ping.(2013).Enhanced photoelectrocatalytic performance of titanium dioxide/carbon cloth based photoelectrodes by graphene modification under visible-light irradiation.JOURNAL OF HAZARDOUS MATERIALS,263,291-298. |
| MLA | Zhai, Chunyang,et al."Enhanced photoelectrocatalytic performance of titanium dioxide/carbon cloth based photoelectrodes by graphene modification under visible-light irradiation".JOURNAL OF HAZARDOUS MATERIALS 263(2013):291-298. |
入库方式： OAI收割
来源：化学研究所
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