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| Design and Construction of All-Solid Z-Scheme CdS/Au/Bi2MoO6 Heterostructure with Enhanced Photocatalytic Performance |
| Author Name | Affiliation | E-mail | | GUO Li | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | | | ZHAO Qiang | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | | | ZHANG Yue-Cheng | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | | | ZHANG Yuan-Yuan | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | | | HAN Xuan-Xuan | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | | | ZHANG Kai-Lai | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | | | WANG Dan-Jun | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | wangdj761118@163.com | | FU Feng | College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an, Shaanxi 716000, China | yadxfufeng@126.com |
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| Abstract: The Z-scheme CdS/Au/Bi2MoO6 heterostructure have been successfully synthesized by CdS and Au co-modification via a facile chemical reduction deposition and secondary hydrothermal method. X-ray diffraction (XRD), X-ray photo-electron spectroscopy (XPS), transmission electron microscope (TEM), scanning electron microscopy (SEM) and other testing techniques were employed to systematically characterize its composition, morphology, optical absorption characteristics and photoelectrochemical properties. The experimental results showed that CdS/Au/Bi2MoO6-2 composite showed the best degradation efficiency under visible light irradiation, and the degradation rate of RhB was about 8.8 and 20 times that of Bi2MoO6 and CdS, respectively. As a solid electronic medium, Au NPs provides a channel for the transmission and transfer of photogenerated electrons. Meanwhile, the response range of the catalytic system to visible light was significantly broadened through Au NPs surface plasmon resonance (SPR) effect and CdS nanoparticles. Besides, the energy band structure of CdS/Au/BMO was determined through the characterizations of the composition, photoelectrochemical properties and valance band-XPS results of the as-prepared photocatalyst. Moreover, the mechanism for the enhancement of the photocatalytic activity of CdS/Au/BMO was also discussed by comparison of their photoluminescence spectra and electron spin resonance spectroscopy (ESR) spectra. |
| Keywords: Z-scheme CdS/Au/Bi2MoO6 heterostructure surface plasmon resonance (SPR) effect photocatalysis RhB |
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| GUO Li,ZHAO Qiang,ZHANG Yue-Cheng,ZHANG Yuan-Yuan,HAN Xuan-Xuan,ZHANG Kai-Lai,WANG Dan-Jun,FU Feng.Design and Construction of All-Solid Z-Scheme CdS/Au/Bi2MoO6 Heterostructure with Enhanced Photocatalytic Performance[J].Chinese Journal of Inorganic Chemistry,2020,36(1):11-20. |
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