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| Photocatalytic CO2 reduction performance of Z-scheme Ag-Cu2O/BiVO4 photocatalyst |
| Author Name | Affiliation | E-mail | | YANG Yi | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | | | WANG Shuang | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | | | WANG Wendan | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | | | CHEN Limiao | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | chenlimiao@csu.edu.cn |
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| Abstract: A Z-scheme heterojunction photocatalyst Ag-Cu2O/BiVO4 was successfully constructed with effective charge carrier separation/transfer by uniformly encapsulating Cu2O nanospheres and Ag nanoparticles on the surface of decahedral BiVO4 using a simple chemical reduction deposition strategy. The photo-reduction of carbon dioxide reaction result indicated that the as-prepared Ag-Cu2O/BiVO4 heterostructure exhibited excellent activity of photo-reduction CO2 with the CO yield of 5.37 μmol·g-1·h-1, about 35.8 times and 6.25 times of original BiVO4 and Cu2O, respectively. Ag-Cu2O/BiVO4 was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), UV-Vis diffuse reflectance absorption spectra (UV-Vis DRS), photoluminescence (PL) spectra, transient photocurrent responses (TPC), and electrochemical impedance spectroscopy (EIS), and the possible reaction mechanism for the reduction of CO2 in the photocatalytic system was proposed. |
| Keywords: Ag-Cu2O/BiVO4 Z-scheme heterojunction photocatalytic CO2 reduction visible light irradiation |
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| YANG Yi,WANG Shuang,WANG Wendan,CHEN Limiao.Photocatalytic CO2 reduction performance of Z-scheme Ag-Cu2O/BiVO4 photocatalyst[J].Chinese Journal of Inorganic Chemistry,2024,40(5):895-906. |
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