期刊
RSC ADVANCES
卷 11, 期 25, 页码 15106-15117出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra02712c
关键词
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资金
- National Nature Science Foundation of China [51778175]
- State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology) [2021TS03]
The ternary BC/VO/CN composite was prepared by a simple hydrothermal method, where VO nanoparticles were highly crystalline and intertwined with CN lamellas to form well-defined Z-type heterostructures. Under simulated solar irradiation, the BC/VO/CN hybrid materials showed significantly enhanced photocatalytic activity compared to CN, VO, and VO/CN.
A ternary biochar/vanadium pentoxide/graphite like carbon nitride (BC/V2O5/g-C3N4 denoted BC/VO/CN) composite was prepared by a simple hydrothermal method and its photocatalytic performance was investigated under simulated solar irradiation. The BC/VO/CN was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. Within the BC/VO/CN composites VO nanoparticles were highly crystalline and intertwined with the lamellas of CN, resulting in the formation of well-defined Z-type heterostructures. The photocatalytic activity was evaluated using Rhodamine B as a model pollutant. Under simulated solar (230-780 nm) irradiation the as-prepared BC/VO/CN hybrid materials demonstrated highly improved photocatalytic activity compared to CN, VO and VO/CN. The cause of the solar enhancement could be ascribed to the formation of Z-type heterojunctions between VO and CN, which promoted faster electron-hole separation and more efficient charge transfer. BC, as an electron transfer medium, accelerated the transfer of photogenerated charge carriers and inhibited their recombination.
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