The preparation and properties study of photocatalytic nanocrystalline/nanoporous WO3 thin films
The preparation and properties study of photocatalytic nanocrystalline/nanoporous WO3 thin films
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DOI：
10.1016/s0261-3069(01)00040-1
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发表时间：
2002-05
影响因子：
8.4
通讯作者：
Huiyao Wang;P. Xu;Tian-min Wang
中科院分区：
文献类型：
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作者：
Huiyao Wang;P. Xu;Tian-min Wang
在本文中，一个r.f.采用磁控反应法在玻璃板上制备了光催化纳米晶/纳米孔WO 3薄膜。为了研究薄膜结构和性质对光催化活性的影响，采用透射电镜（TEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）对薄膜的结构、形貌、组成和键合进行了研究。通过UV分光光度计测量膜的透光率。研究了沉积温度对WO 3薄膜微观结构、氧空位和光催化活性的影响。随着衬底温度的升高，薄膜的结构由非晶态转变为基本晶态。由于WO 3薄膜中晶相含量的增加和氧空位的减少，提高了WO 3薄膜的光催化降解效率。
In this paper, a r.f. magnetron reactive method is used to prepare photocatalytic nanocrystalline/nanoporous WO3thin films immobilized on glass plates. In order to investigate the effects of film structure and properties on photocatalytic reactivity, the structure, morphology, composition and bond of the thin films are studied with transmission electronic microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The light transmission of the films is measured by an UV spectrophotometer. The microstructure, oxygen vacancies and photocatalytic reactivity of the WO3films have been proved as a function of deposition temperature. The structure of the films is converted from an amorphous state to a basically crystalline state with the increase of substrate temperature. The efficiency of photocatalytic degradation is improved as a result of increasing crystalline content and decreasing oxygen vacancies in the WO3thin films.