Synthesis and Evaluation of Visible-Light Photocatalyst: Nitrogen-Doped TiO2/Bi2O3 Heterojunction Structures
Fan, Xiaoyun; Hua, Ning; Jia, Hanzhong; Zhu, Yunqing; Wang, Zhen; Xu, Jian; Wang, Chuanyi
2014
发表期刊SCIENCE OF ADVANCED MATERIALS
ISSN1947-2935
卷号6期号:8页码:1892-1899
摘要N-TiO2/Bi2O3 composites have been successfully prepared by a simple coupling method and evaluated in detail. These composites represent a potential new class of heterojunction-structured photocatalysts wherein the enhanced light absorption properties of N-TiO2 are anticipated to couple with the observed benefits of composite TiO2/Bi2O3 systems. The composites were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), N-2-adsorption desorption, diffuse reflectance spectroscopy (DRS), and scanning electron microscopy (SEM). It was found that composites with low Bi2O3 content display enhanced photocatalytic activity for decomposition of 2,4-dichlorophenol (2,4-DCP) under visible light irradiation, which is attributed to a synergistic effect between the two composite components and the flow of holes and electrons through the heterojunction. The PL spectroscopy was adopted to analyze the physical properties of the photogenerated carriers and it was found that the separation of photogenerated carriers of Bi2O3 has been largely promoted after being coupled with N-TiO2. Significantly, the enhanced performance demonstrated the importance of evaluating new composite photocatalysts. It would be helpful in designing and constructing high efficiency heterogeneous semiconductor photocatalyst with the purpose of enhancing activity by coupling suitable wide and narrow band-gap semiconductors, which is inspiring for the practical environmental purification.
关键词(N-tio2)/(Bi2o3) Composite Photocatalytic Heterojunction Charge Transfer 2 4-dichlorophenol.
DOI10.1166/sam.2014.1962
收录类别SCI
WOS记录号WOS:000342480600029
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/3751
专题中国科学院特殊环境功能材料与器件重点试验室
作者单位Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China;Xinjiang Acad Safety Sci & Technol, Urumqi 830002, Xinjiang, Peoples R China
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Fan, Xiaoyun,Hua, Ning,Jia, Hanzhong,et al. Synthesis and Evaluation of Visible-Light Photocatalyst: Nitrogen-Doped TiO2/Bi2O3 Heterojunction Structures[J]. SCIENCE OF ADVANCED MATERIALS,2014,6(8):1892-1899.
APA Fan, Xiaoyun.,Hua, Ning.,Jia, Hanzhong.,Zhu, Yunqing.,Wang, Zhen.,...&Wang, Chuanyi.(2014).Synthesis and Evaluation of Visible-Light Photocatalyst: Nitrogen-Doped TiO2/Bi2O3 Heterojunction Structures.SCIENCE OF ADVANCED MATERIALS,6(8),1892-1899.
MLA Fan, Xiaoyun,et al."Synthesis and Evaluation of Visible-Light Photocatalyst: Nitrogen-Doped TiO2/Bi2O3 Heterojunction Structures".SCIENCE OF ADVANCED MATERIALS 6.8(2014):1892-1899.
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