期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 92, 期 -, 页码 148-153出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2012.02.055
关键词
Photocatalytic degradation; Spectrophotometric studies; Methyl orange; Visible light; Nanocrystals; Phthalocyanine-modified Fe-doped TiO2
类别
资金
- Institute for Color Science and Technology
- Amirkabir University of Technology
- National Elite Foundation
In this paper, preparation and visible light induced photocatalytic activity of phthalocyanine-modified Fe-doped TiO2 nanocrystals (Pc/Fe-TiO2) with different Fe doping content (0, 0.05, 0.5 and 3.0 mol% Fe) as photocatalysts for the degradation of methyl orange have been reported. The study carried out using XRD, FT-IR, EDX, BET, DRS, UV-Vis, SEM and TEM techniques. Results revealed that modified TiO2 nanocrystals possessed only the anatase phase with crystal sizes of about 10-23 nm and high surface areas of 2.8-37.3 m(2)/g. It can be seen phthalocyanine and Fe3+ ion exist in photocatalysts based on analysis of FT-IR and EDX. The doping amount of Fe remarkably affects the activity of modified TiO2 nanocrystals as catalysts. The 0.5 mol% Fe doping exhibited enhanced photocatalytic activity in this work. It was found that phthalocyanine and Fe induced a shift in the energy band gap to lower energies, which changes from 3.26 to 2.26 eV for pure TiO2 and Pc/3% Fe-TiO2 nanocrystals, respectively. Results of the degradation of methyl orange revealed that modified TiO2 nanocrystals showed much more photocatalytic activity than pure TiO2 under visible light which makes the applicability of TiO2 photocatalysts even more versatile. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据