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A Novel Way to Prepare Visible‐Light‐Responsive WO 3 / T i O 2 Composite Film with High Porosity
Author(s) -
Luo Qiang,
Cai Qizhou,
He Jian,
Li Xinwei,
Chen Xidi,
Pan Zhenhua,
Li Yujie
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12062
Subject(s) - calcination , materials science , anatase , x ray photoelectron spectroscopy , tungstate , plasma electrolytic oxidation , amorphous solid , photocatalysis , scanning electron microscope , chemical engineering , visible spectrum , photoluminescence , electrolyte , composite material , optoelectronics , crystallography , metallurgy , catalysis , chemistry , organic chemistry , electrode , engineering
Amorphous oxide film was prepared on the titanium substrate by plasma electrolytic oxidation ( PEO ) technology in acidic electrolyte consisting of tungstate and then subject to calcination in air. Films were characterized by scanning electron microscopy, energy dispersive X ‐ray, X‐ray diffraction , X ‐ray photoelectron spectroscopy, photoluminescence , and UV ‐ V is DRS before and after calcination, respectively. Calcined film consisted of anatase and WO 3 , showing more open structure compared with uncalcined film. Furthermore, the absorption edge of calcined film was shifted to visible light region and the recombination of photo‐induced carriers was inhibited effectively, resulting that WO 3 / T i O 2 composite film produced by PEO technology and calcination should be effective as a visible‐light‐responsive photocatalyst.