Fe3+/Fe2+ cycling promoted by Ta3N5 under visible irradiation in Fenton degradation of organic pollutants
文献类型：期刊论文
| 作者 | Wang, Yifeng; Ma, Wanhong; Chen, Chuncheng; Hu, Xuefeng; Zhao, Jincai; Yu, Jimmy C. |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2007-09-26 |
| 卷号 | 75期号:3-4页码:256-263 |
| 关键词 | Tantalum Nitride Iron Cycling Photocatalyst Degradation Photo-fenton Reaction |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2007.04.019 |
| 英文摘要 | Ta3N5 was synthesized by nitridation of Ta2O5 under NH3 flow at 700 degrees C. The catalyst was pure Ta3N5 according to X-ray diffraction (XRD), and was about 5 nm in size with a BET specific surface area 52.8 m(2)/g. When Ta3N5 was added to F3+/H2O2 solution (known as Fenton-like system). most Fe3+ were adsorbed on the Ta3N5 Surface and could not react with H2O2 in the dark, which is different from the general Fenton reaction. Under visible light irradiation, adsorbed Fe3+ ions were reduced to Fe2+ rapidly and Fe2+ were reoxidized by H2O2 on the Ta3N5 surface, thus a fast Fe3+/Fe2+ cycling was established. Kinetics and ESR measurements supported this mechanism. The Ta3N5/Fe3+/H2O2 system could efficiently decompose H2O2 to generate hydroxyl radicals driven by visible light, which could accelerate significantly the degradation of organic molecules such as N,N-dimethylaniline (DMA), and 2,4-dichlorophenol (DCP). A mechanism was proposed for iron cycling on the basis of experimental results. (c) 2007 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000250180900013 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/61691]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhao, Jincai |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yifeng,Ma, Wanhong,Chen, Chuncheng,et al. Fe3+/Fe2+ cycling promoted by Ta3N5 under visible irradiation in Fenton degradation of organic pollutants[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2007,75(3-4):256-263. |
| APA | Wang, Yifeng,Ma, Wanhong,Chen, Chuncheng,Hu, Xuefeng,Zhao, Jincai,&Yu, Jimmy C..(2007).Fe3+/Fe2+ cycling promoted by Ta3N5 under visible irradiation in Fenton degradation of organic pollutants.APPLIED CATALYSIS B-ENVIRONMENTAL,75(3-4),256-263. |
| MLA | Wang, Yifeng,et al."Fe3+/Fe2+ cycling promoted by Ta3N5 under visible irradiation in Fenton degradation of organic pollutants".APPLIED CATALYSIS B-ENVIRONMENTAL 75.3-4(2007):256-263. |
入库方式： OAI收割
来源：化学研究所
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