文献类型：期刊文献

英文题名：In situ synthesis of CNTs/Fe-Ni/TiO2 nanocomposite by fluidized bed chemical vapor deposition and the synergistic effect in photocatalysis

作者：Ma, Lei[1];Chen, Aiping[1];Lu, Jindong[1];Zhang, Zhe[1];He, Hongbo[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：14

起止页码：24

外文期刊名：PARTICUOLOGY

收录：;EI(收录号：20142617860594);WOS:【SCI-EXPANDED(收录号:WOS:000338609600004)】；

基金：This work was supported by the Special Projects for Nano-technology of Shanghai (1052mm02400) and the National Nature Science Foundation of China (20925621).

语种：英文

外文关键词：CNTs/Fe-Ni/TiO2; In situ FBCVD method; Photocatalytic degradation; Synergistic effect

摘要：Carbon nanotube (CNTs)/Fe-Ni/TiO2 nanocomposite photocatalysts have been synthesized by an in situ fluidized bed chemical vapor deposition (FBCVD) method. The composite photocatalysts were characterized by XRD, Raman spectroscopy, BET, FESEM, TEM, UV-vis spectroscopy, and XPS. The results showed that the CNTs were grown in situ on the surface of TiO2. Fe(III) in TiO2 showed no chemical changes in the growth of CNTs. Ni(II) was partly reduced to metal Ni in the FBCVD process, and the metal Ni acted as a catalyst for the growth of CNTs. The photocatalytic activities of CNTs/Fe-Ni/TiO2 decreased with the rise of the FBCVD reaction temperature. For the sample synthesized at low FBCVD temperature (500 degrees C), more than 90% and nearly 50% of methylene blue were removed under UV irradiation in 180 min and under visible light irradiation in 300 mm, respectively. The probable mechanism of synergistic enhancement of photocatalysis on the CNTs/Fe-Ni/TiO2 nanocomposite is proposed. (C) 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.