In-situ Construction of 0D/2D Bi2S3/g-C3N4 Heterojunction with Enhanced Photocatalytic Performance
LI Yupei1,2, WANG Xiaojing2, ZHAO Jun2, HU Qiuyue2, WANG Liyong1, CHENG Yongqiang1
1 College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China 2 College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
Abstract: Aseries of 0D/2D Bi2S3/g-C3N4 based heterojunctions were synthesized via one-step hydrothermal processing using Bi(NO3)3·5H2O as bismuth source, sodium thiosulfate as sulfur source, in the present of g-C3N4 nanosheets. The as-obtained photocatalysts were characte-rized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectra (UV-Vis), photoluminescence spectra (PL) and electrochemical analytic method. The photocatalytic activity of Bi2S3/g-C3N4 samples was evaluated by the degradation of Rhodamine-B. As a result, the tiny 0-dimentio-nal Bi2S3 nanoparticles were well-dispersed on the 2-dimentional g-C3N4 nanosheets. And the heterojunctions show higher photocatalytic performance because of the large absorption visible light area, and the increased electron/hole separation rate. The Bi2S3/g-C3N4heterojunctions also show good stability and high photocatalytic performance after 5 cycle tests.
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2020, Vol. 34 
