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TiO 2 / WO 3 Layered Film with Dual‐Function of Anti‐ UV Light and High Photoelectrocatalytic Activity: Facile Preparation and Characterization
Author(s) -
Liu Baoshun,
Wen Liping,
Zhang Hongjian,
Zhao Xiujian
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05370.x
Subject(s) - x ray photoelectron spectroscopy , materials science , anatase , calcination , photocurrent , sputter deposition , photocatalysis , chemical engineering , sputtering , rutile , orthorhombic crystal system , thin film , analytical chemistry (journal) , nanotechnology , optoelectronics , crystallography , chemistry , catalysis , organic chemistry , crystal structure , engineering
Using magnetron sputtering, followed by post calcination TiO 2 , WO 3 , and TiO 2 / WO 3 layered films were prepared using magnetron sputtering and followed by post calcination. The film structures and morphologies were checked using XRD , R aman spectroscopy, FE ‐ SEM , XPS , and UV ‐Vis spectroscopy. The TiO 2 and WO 3 films are of anatase and orthorhombic structures. The WO 3 underlayer of the TiO 2 / WO 3 film grows in [002] direction, almost perpendicular to substrates. Compared with the TiO 2 film, the TiO 2 / WO 3 ‐layered film effectively absorbs near‐ UV light. The photocurrent of layered TiO 2 / WO 3 film is much higher than that of TiO 2 film under UV light illumination. The photoelectrocatalytic activity of the films was evaluated in two‐electrode photocatalytic reactor, which is assisted by bias voltage. It is seen that PEC activity of TiO 2 / WO 3 film is almost four times higher than pure TiO 2 film. Summarily, the TiO 2 / WO 3 ‐layered film with dual‐function of anti‐ UV light and high PEC activity was prepared using facile magnetron sputtering.