title: Effect of pH on the adsorption and photocatalytic degradation of sulfadimidine in Vis/g-C3N4progress.
abstract: In this study, g-C3N4was synthesized by thermal polycondensation of melamine and was characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, UV-visible diffuse reflection spectroscopy, and scanning electron microscopy. Results showed that g-C3N4degraded sulfadimidine (SMD) under visible light, in which the adsorption and photocatalytic degradation was influenced by pH. The maximum adsorption capacity was achieved at approximately pH 5. The highest degradation rate constant was obtained at strong acid and alkali. In addition, the degradation mechanism of g-C3N4was evaluated with the help of quencher agents. The intermediates, degradation pathways, and mineralization of SMD were also determined to evaluate the degradation and oxidation ability of g-C3N4.
authors.affiliation: College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.affiliation: College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, People's Republic of China.
authors.forename: Xuhui
authors.initials: X
authors.lastname: Mao
authors.affiliation: College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, People's Republic of China.
authors.forename: Liu
authors.initials: L
authors.lastname: Pi
authors.affiliation: College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, People's Republic of China.
authors.forename: Yixiao
authors.initials: Y
authors.lastname: Wu
authors.affiliation: College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, People's Republic of China.
authors.forename: Huijun
authors.initials: H
authors.lastname: Ding
authors.affiliation: College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, People's Republic of China. zhangwh@whu.edu.cn.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan University, Wuhan, 430072, People's Republic of China. zhangwh@whu.edu.cn.
authors.forename: Weihao
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D000900:Anti-Bacterial Agents / Q000737:chemistry*; D002384:Catalysis; D004785:Environmental Pollutants / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008027:Light; D008855:Microscopy, Electron, Scanning; D010084:Oxidation-Reduction; D056951:Photoelectron Spectroscopy; D010782:Photolysis; D013418:Sulfamethazine / Q000737:chemistry*; D014227:Triazines / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D004785:Environmental Pollutants; D014227:Triazines; D013418:Sulfamethazine; C011907:melamine
keywords: Antibiotics; Degradation pathways; Photodegradation; g-C3N4