Enhancement of adsorption and photocatalytic activity of TiO2 by using carbon nanotubes for the treatment of azo dye
文献类型：期刊论文
| 作者 | Yu, Y; Yu, JC; Chan, CY; Che, YK; Zhao, JC; Ding, L; Ge, WK; Wong, PK |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2005-10-27 |
| 卷号 | 61期号:1-2页码:1-11 |
| 关键词 | Carbon Nanotubes Photocatalysis Adsorption Tio2 Azo Dye Degradation |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2005.03.008 |
| 英文摘要 | The effect of carbon nanotubes (CNTs) on the adsorption and the photocatalytic properties of TiO2 (P25) for the treatment of azo dyes, including one monoazo dye Procion Red MX-5B, and two diazo dyes Procion Yellow HE4R and Procion Red HE3B, are investigated by Brunauer-Emmett-Teller (BET) measurement, spectrophotometer, total organic carbon (TOC), high proficiency liquid chromatography (HPLC), Raman spectroscopy (Raman), photoluminescence (PL), electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM) analyses. The results show that compared with activated carbon (AC), CNTs can comparatively better improve the adsorption of the dyes onto P25 due to the strong interaction between P25 and CNTs. Residual TOC in the solutions and the amount of cyanuric acid evolved after degradation both confirm that the adsorption ability of P25 is enhanced by CNTs. CNTs also facilitate the photocatalytic activity of P25 in the degradation of the three azo dyes more efficiently than AC. With PL and EPR analysis, the mechanism of the enhancement of the photocatalytic activity of P25 by CNTs is proposed. The excited e(-) in conduction band of TiO2 may migrate into CNTs, of which have special structure and the ability for e- transport. Thus, the possibility of the recombination of e(-)/h(+) pairs decreases. Meanwhile, O-2 adsorbed on the surface of CNTs may accept e(-) and form center dot O-2(-), which also leads to the formation of center dot OH in the system. Therefore, there are more radicals in the system, resulting in the quicker degradation of the dyes. (c) 2005 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000232820600001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/56841]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wong, PK |
| 作者单位 | 1.Chinese Univ Hong Kong, Dept Biol, Shatin 00000, Hong Kong, Peoples R China 2.Chinese Univ Hong Kong, Dept Chem, Shatin 00000, Hong Kong, Peoples R China 3.Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Peoples R China 4.Chinese Univ Hong Kong, Environm Sci Program, Shatin 00000, Hong Kong, Peoples R China 5.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China 6.Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Y,Yu, JC,Chan, CY,et al. Enhancement of adsorption and photocatalytic activity of TiO2 by using carbon nanotubes for the treatment of azo dye[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2005,61(1-2):1-11. |
| APA | Yu, Y.,Yu, JC.,Chan, CY.,Che, YK.,Zhao, JC.,...&Wong, PK.(2005).Enhancement of adsorption and photocatalytic activity of TiO2 by using carbon nanotubes for the treatment of azo dye.APPLIED CATALYSIS B-ENVIRONMENTAL,61(1-2),1-11. |
| MLA | Yu, Y,et al."Enhancement of adsorption and photocatalytic activity of TiO2 by using carbon nanotubes for the treatment of azo dye".APPLIED CATALYSIS B-ENVIRONMENTAL 61.1-2(2005):1-11. |
入库方式： OAI收割
来源：化学研究所
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