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
Source PublicationSCIENCE OF ADVANCED MATERIALS
ISSN1947-2935
Volume6Issue:8Pages:1892-1899
AbstractN-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.
Keyword(N-tio2)/(Bi2o3) Composite Photocatalytic Heterojunction Charge Transfer 2 4-dichlorophenol.
DOI10.1166/sam.2014.1962
Indexed BySCI
WOS IDWOS:000342480600029
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/3751
Collection中国科学院特殊环境功能材料与器件重点试验室
AffiliationChinese 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
Recommended Citation
GB/T 7714
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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