【摘 要】
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Dielectric barrier discharge(DBD)plasma applied as surface treatment technology was em-ployed for the modification of Ag2O and graphitic carbon nitride(g-C3N4)p
【机 构】
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School of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou,310018,China;
论文部分内容阅读
Dielectric barrier discharge(DBD)plasma applied as surface treatment technology was em-ployed for the modification of Ag2O and graphitic carbon nitride(g-C3N4)powders.Subse-quently,the pretreated powders were sequentially loaded onto TiO2 nanorods(TiO2-NRs)via electro-deposition,followed by calcination at N2 atmosphere.The results indicated that at the optimal plasma discharge time of 5 min for modification of g-C3N4 and Ag2O,photocur-rent density of ternary composite was 6 times to bare TiO2-NRs under UV-visible light irradi-ation.Phenol was degraded by using DBD plasma-modified g-C3N4/Ag2O/TiO2-NRs electrode to analyze the photoelectrocatalytic performance.The removal rate of phenol for g-C3N4-5/Ag2O-5/TiO2-NRs electrode was about 3.07 times to that for TiO2-NRs electrode.During ac-tive species scavengers'analysis,superoxide radicals and hydroxyl radicals were the main oxidation active species for pollutants degradation.A possible electron-hole separation and transfer mechanism of ternary composite with high photoelectrocatalytic performance was proposed.
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