Preparation of NaxBayBiO3•nH2O and their photooxidation characteristic under visible-light irradiation

被引：7

作者：

Feng Peng ^{[1
,2
]}

Chen, Chunlin ^{[1
]}

Hao Yu ^{[1
,2
]}

Wang, Hongjuan ^{[1
]}

Jian Yang ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

[2] Fuzhou Univ, State Key Lab Breeding Base Photocatalysis, Fuzhou 35002, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 116卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Inorganic compounds; X-ray photo-emission spectroscopy; Oxidation; BISMUTHATE MEDIATED OXIDATION; SODIUM BISMUTHATE; PHOTOCATALYTIC ACTIVITY; ORGANIC CONTAMINANTS; TITANIUM-DIOXIDE; FUTURE-PROSPECTS; THIN-FILMS; BIVO4; DEGRADATION; DECOMPOSITION;

D O I：

10.1016/j.matchemphys.2009.03.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

NaxBayBiO3 center dot nH(2)O (NBBO) has been prepared using a commercial NaBiO3 center dot nH(2)O (NBO) as a starting material with a hydrothermal iron-exchange reaction. As-synthesized samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible light (UV-vis) absorbance spectra, thermogravimetry-differential scanning calorimetry (TG-DSC) and X-ray photoelectron spectroscopy (XPS) techniques. The photooxidation decomposition of phenol over NBBO has been carried out under visible-light irradiation (lambda > 400 nm). The result revealed that the NBBO showed considerable photooxidation activity for phenol degradation in the range of visible light. The result of reusability indicated the structure of NBBO was instable, which was changed to Bi2O2CO3 in the photooxidation process, although photooxidation activity kept high in three runs. This study has provided useful information for the development of new bismuthate photocatalyst with higher photoactivity under visible-light irradiation. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：294 / 299

页数：6

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