The Preparation and Characterization of N-F-Sm-TiO2 Sol and Its Photocatalytic Degradation for 4-chlorophenol

DOI

10.2991/mems.2012.129How to use a DOI?

Keywords

titanium dioxide sol photocatalyst N, F and Sm co-doping photodegradation 4-chlorophenol

Abstract

Anatase N, F and Sm codoped TiO2 sol (N-F-Sm-TiO2) catalysts were prepared by a modified sol-gel hydrothermal method, using tetra butyl titanate as precursor. The morphology, particle size and the present forms of F, N and Sm atoms of as-prepared N-F-Sm-TiO2 sol were characterized by XRD TEM UV-Vis-DRS and XPS; The results showed that N-F-Sm-TiO2 particles in sol were anatase structure and the average particle size was ca. 15.0 nm calculated from XRD after hydrothermal reaction at 130 for 72 hours. It was also shown that fluorine and nitrogen atoms were adopted by TiO2 sol particles with two forms, one was physically adsorbed on the surface of TiO2, and the other was embedded into TiO2 crystal lattice and Sm did not incorporate into TiO2 crystal lattice, existed in the form of Sm2O3 formed binary metal compound with TiO2. It was found that the N-F-Sm-codoped TiO2 sol particles showed strong visible-light absorption and high photocatalytic activity for 4-chlorophenol under irradiation by visible light (400-500nm). The high visible-light photocatalytic activity of the obtained N-F-Sm-codoped TiO2 sol may result from the synergetic effect of nitrogen, fluorine and samarium co-doping.

Copyright

© 2012, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Zhang Wen-tao
AU  - Xie Wen-fa
AU  - Quan Shui-qing
AU  - Huang Donggen
PY  - 2012/12
DA  - 2012/12
TI  - The Preparation and Characterization of N-F-Sm-TiO2 Sol and Its Photocatalytic Degradation for 4-chlorophenol
BT  - Proceedings of the 1st International Conference on Mechanical Engineering and Material Science (MEMS 2012)
PB  - Atlantis Press
SP  - 490
EP  - 493
SN  - 1951-6851
UR  - https://doi.org/10.2991/mems.2012.129
DO  - 10.2991/mems.2012.129
ID  - Wen-tao2012/12
ER  -