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Constructing and Photocatalytic Performance of g-C3N4/Ag/TiO2 Composites |
Author Name | Affiliation | E-mail | LI Ping | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | ZHANGA Xiao-Xian | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | SI Ying | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | LIANG Ting-Ting | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | LIU Huan | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | QIU Ling-Fang | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | DUAN Shu-Qi | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | | DUO Shu-Wang | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | swduo@imr.ac.cn | CHEN Zhong | Jiangxi Key Laboratory of Material Surface Engineering, School of Materials and Mechanical and Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China | |
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Abstract: g-C3N4/Ag/TiO2 ternary photocatalysts were successfully constructed by a mechanical agitation method with as-synthesized Ag/TiO2 hollow microspheres and g-C3N4 nanosheets as the raw materials. The photocatalysts were systematically characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and photoluminescence spectra (PL). The results showed that g-C3N4/Ag/TiO2 was assembled by Ag/TiO2 microspheres and g-C3N4 nanosheets. Compared with TiO2, the resultant g-C3N4/Ag/TiO2 heterojunctions possessed longer visible-light response range and faster photo-induced carrier separation rate. At room temperature, the visible-light photocatalytic activity of g-C3N4/Ag/TiO2 was investigated by photodegradation of rhodamine B (RhB). The results showed that the highest visible-light-driven photocatalytic efficiency of g-C3N4 (0.5%)/Ag/TiO2 with 180 min of light irradiation was 91.9%, which was nearly 7.5 and 1.8 times higher than pure TiO2 and two-component Ag/TiO2, respectively. The enhanced photocatalytic activity could be mainly attributed to the reasonably designed heterojunctions and the electrical conductivity of Ag. |
Keywords: photocatalysis titanium dioxide template method rhodamine B photodegradation |
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LI Ping,ZHANGA Xiao-Xian,SI Ying,LIANG Ting-Ting,LIU Huan,QIU Ling-Fang,DUAN Shu-Qi,DUO Shu-Wang,CHEN Zhong.Constructing and Photocatalytic Performance of g-C3N4/Ag/TiO2 Composites[J].Chinese Journal of Inorganic Chemistry,2020,36(3):566-574. |
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