Photocatalytic conversion of CO2 into renewable hydrocarbons using solar energy is one of the potential solutions to both global warming and fuel crisis. Of particular interest in this work, we prepared AgI/Ag3PO4 heterojunction catalyst as photocatalyst to convert CO2 into value-added products. The synthesis route of AgI/Ag3PO4 involved first ion-exchange preparation of tetrahedron Ag3PO4 followed by precipitation of AgI. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), specific surface area test (BET), and ultraviolet-visible absorption spectra (UV-Vis). With the mole ratio of AgI/Ag3PO4 being 30%, the catalyst showed the best catalytic performance for reduction of CO2, and the major product was CH4. The pronounced photocatalytic performance should be attributed to the efficient separation of the light electrons and holes arisen from the p-n junction between Ag3PO4 and AgI.
曾滔, 林海燕, 余岩, 何志桥, 宋爽. AgI/Ag3PO4异质结催化剂可见光催化还原CO2的研究[J]. 中国环境科学, 2017, 37(5): 1751-1758.
ZENG Tao, LIN Hai-yan, YU Yan, HE Zhi-qiao, SONG Shuang. Photocatalytic reduction of CO2 with AgI/Ag3PO4 heterojunction catalyst under visible light. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(5): 1751-1758.
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