| CdS-TiO_2/MWCNTs结构表征及其光催化性能 |
| |
| 引用本文： | 杨岳,黄碧纯,叶代启,陈晓珊.CdS-TiO_2/MWCNTs结构表征及其光催化性能[J].环境工程学报,2010,4(2):398-402. |
| |
| 作者姓名： | 杨岳 黄碧纯 叶代启 陈晓珊 |
| |
| 作者单位： | 华南理工大学环境科学与工程学院,广州,510006 |
| |
| 基金项目： | 国家高技术研究发展计划（863）项目(2006AA06A310)；广东省科技计划项目(2008B050100007,2009B050900005)；污染控制与生态修复广东省普通高等学校重点实验室开放基金资助 |
| |
| 摘 要： | 采用溶胶-凝胶法,制备了多壁碳纳米管(MWCNTs)负载的双组分复合半导体光催化剂CdS-TiO2/MWCNTs。通过透射电镜(TEM)、比表面分析(BET)、X射线衍射(XRD)和紫外-可见吸收光谱(UV-vis)等分析方法对光催化剂进行了结构表征,并考察了CdS-TiO2/MWCNTs对甲苯降解的光催化性能。结果表明:纳米活性粒子CdS-TiO2均匀负载于MWCNTs上,比表面积、光吸收阈值和强度增大,活性粒子间以及活性粒子与载体之间具有协同作用,有利于光催化性能的提高,CdS-TiO2/MWCNTs在主波长为254 nm紫外光照射下对甲苯的降解效果较好,去除率可达55.3%。
|
| 关 键 词： | 光催化 多壁碳纳米管 二氧化钛 硫化镉 甲苯 |
| 收稿时间： | 4/9/2009 12:00:00 AM |
Characterization and photocatalytic performance of CdS-TiO2/MWCNTs |
| |
| Yang Yue,Huang Bichun,Ye Daiqi and Chen Xiaoshan.Characterization and photocatalytic performance of CdS-TiO2/MWCNTs[J].Techniques and Equipment for Environmental Pollution Control,2010,4(2):398-402. |
| |
| Authors: | Yang Yue Huang Bichun Ye Daiqi and Chen Xiaoshan |
| |
| Institution: | College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China,College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China,College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China and College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China |
| |
| Abstract: | A cadmium sulfide (CdS)-titanium dioxide (TiO2) nanocomposite supported on multi-walled carbon nanotubes (MWCNTs) was prepared by a sol-gel method. The structures of the photocatalyst CdS-TiO2/MWCNTs were characterized by transmission electron microscopy (TEM), brunaure-emmett-teller (BET), X-ray diffraction (XRD) and UV-visible absorption spectrum (UV-vis) techniques. And the photocatalytic performance was investigated for toluene decomposition. The results showed that the CdS-TiO2 nanocomposites were highly dispersed on the sidewall of MWCNTs, with a greater BET surface area and an extended light adsorption threshold and intensity. The presence of CdS and MWCNTs played a great role in improving photocatalytic properties of TiO2. Under the irradiation UV light at the wavelength of 254 nm, the removal efficiency of toluene decomposition on CdS-TiO2/MWCNTs was up to 55.3%. |
| |
| Keywords: | photocatalysis MWCNTs TiO2 CdS toluene |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境工程学报》浏览原始摘要信息 |
| 点击此处可从《环境工程学报》下载免费的PDF全文 |
|
