ICCAS OpenIR
Influence of pH on structure and photochromic behavior of nanocrystalline WO3 films
Xu, N; Sun, M; Cao, YW; Yao, JN; Wang, EG
2000-03-01
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume157Issue:1-2Pages:81-84
AbstractNanocrystalline tungsten oxide thin films were prepared by colloid chemistry method. By varying pH in the solution from which the films were prepared, the corresponding structure, constituent phase and photochromic behavior of the films were investigated with transmission electron microscope (TEM), X-ray diffraction (XRD), absorption spectra and X-ray photoelectron spectra (XPS). It was found that with the increase of the pH of the solution, tungsten oxide hydrate was gradually transformed into an oxided 12-tungstate with Keggin structure. XPS detection revealed that oxided 12-tungstate has a different reduction state from tungsten oxide hydrate when exposed to ultraviolet light, so as to result in the change of photochromic behavior of the films. And the variation of reduction characteristics of the films is believed to be related to the structural transformation of the films caused by pH in the solution. (C) 2000 Elsevier Science B.V. All rights reserved.
KeywordNanocrystalline Microstructure Tungsten Oxide Photochromic
Indexed BySCI
Language英语
WOS IDWOS:000086008000013
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:67[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76002
Collection中国科学院化学研究所
Corresponding AuthorSun, M
Affiliation1.Chinese Acad Sci, State Key Lab Surface Phys, Inst Phys, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
4.Chinese Acad Sci, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xu, N,Sun, M,Cao, YW,et al. Influence of pH on structure and photochromic behavior of nanocrystalline WO3 films[J]. APPLIED SURFACE SCIENCE,2000,157(1-2):81-84.
APA Xu, N,Sun, M,Cao, YW,Yao, JN,&Wang, EG.(2000).Influence of pH on structure and photochromic behavior of nanocrystalline WO3 films.APPLIED SURFACE SCIENCE,157(1-2),81-84.
MLA Xu, N,et al."Influence of pH on structure and photochromic behavior of nanocrystalline WO3 films".APPLIED SURFACE SCIENCE 157.1-2(2000):81-84.
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