Paper Title:
Preparation of Nanocrystalline W-Doped TiO2 Powders and their Photocatalytic Properties under Visible Light Irradiation
  Abstract

Nanocrystalline W-doped TiO2 powders with different initial W/Ti ratio in starting materials have been prepared by hydrothermal method. The phase composition, morphologies, specific surface areas and the photocatalytic activities under visible light irradiation of the synthesized powders have been characterized. XRD identification reveals that the synthesized powders were composed of anatase. No rutile has been detected in the products. The specific surface area of the powders was ranged from 185 to 210 m2/g by BET measurement. The averaged grain size of the powders was calculated as about 12 nm by Scheller's method. Uniform size distribution and good crystallinity have been confirmed by TEM. UV-Vis spectra show that the absorption edges of the synthesized W-doped TiO2 powders with different nominal doping concentration of W ions have been red-shifted into visible light region, which suggests that the W ions have been doped into the lattice of TiO2. In our case, W-doped TiO2 with initial W/Ti atomic ratio of 1% in starting materials has the best photocatalytic activities when decompose the Methylblue in its aqueous solution, which is consistent with that of the theoretical results from our previous work.

  Info
Periodical
Edited by
Hyungsun Kim, Jian Feng Yang, Chuleol Hee Han, Somchai Thongtem and Soo Wohn Lee
Pages
489-492
DOI
10.4028/www.scientific.net/MSF.695.489
Citation
Y. T. Song, W. N. Shao, W. B. Cao, "Preparation of Nanocrystalline W-Doped TiO2 Powders and their Photocatalytic Properties under Visible Light Irradiation", Materials Science Forum, Vol. 695, pp. 489-492, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Tohru Sekino, Takumi Okamoto, Tomoko Kasuga, Takafumi Kusunose, Tadachika Nakayama, Koichi Niihara
Abstract:We have investigated a synthesis of metal (Nb, V, Cr, Mn, Co) -doped titania nanotubes using a solution chemical processing in order to...
251
Authors: Ming Kwei Lee, Tsung Hsiang Shih, Chen Lia Ho, Hung Chang Lee, Chih Feng Yen, Hwai Fu Tu, Cho Han Fan
Abstract:High quality nano-scaled fluorine and nitrogen co-doped anatase phase TiO2 can be obtained from the conversion of ammonium...
1474
Authors: Hong Ying Dong, Kai Ming Huang, Ying Yue Teng, Yan Ping Ren, Zhi Cheng Jia, Zhen Zhu Cao, Wen Ma
Environmental Catalysis and Environmental Friendly Materials
Abstract:TiO2 nano powder doping with Sn4+ was directly synthesized by a low temperature hydrothermal method using tetrabutyl...
1591
Authors: Tie Kun Jia, Fan Zhang, Xiao Feng Wang, Wei Min Wang
Chapter 1: Novel Processing and Manufacturing
Abstract:Zn-doped SnO2 seaflower like hierarchical architectures have been synthesized via a solvothermal synthesis route in the mixed solvents of...
334
Authors: Tao Yu, Xin Tan, Peng Chen, Hong Mei Wang
Chapter 8: Energy Materials, Engineering Materials and Processing Technologies
Abstract:Lanthanum-doped anatase TiO2 coatings, which are composed of assemble crystalline of 50 nm diameter particles, when the percentage...
1651