title: Removing lignin model pollutants with BiFeO3-g-C3N4compound as an efficient visible-light-heterogeneous Fenton-like catalyst.
abstract: BiFeO3-g-C3N4nanoscaled composite was prepared with a hydrothermal method and evaluated as a highly efficient photo-Fenton like catalyst under visible light irradiation. The BiFeO3-g-C3N4composite exhibited much stronger adsorption ability to lignin model pollutant (guaiacol) than that of BiFeO3, which may be due to the higher specific surface area (BiFeO3-g-C3N4: 35.59m2/g>BiFeO3: 7.42m2/g) and the adsorption form of π-π stack between g-C3N4and guaiacol. The composite exhibited excellent visible light-Fenton like catalysis activity, being influenced by the solution pH value and the proportions of BiFeO3and g-C3N4nanosheets. Under optimal conditions with visible light irradiation, the BiFeO3-g-C3N4composite yielded fast degradation of guaiacol with an apparent rate constant of 0.0452min-1, which were 5.21 and 6.80 folds of that achieved by using BiFeO3and the mixture of BiFeO3and g-C3N4nanosheets, respectively. The significantly enhanced visible light-Fenton like catalytic properties of the BiFeO3-g-C3N4composite in comparison with that of BiFeO3was attributed to a large surface area, much increased adsorption capacity and the semiconductor coupling effect between BiFeO3and g-C3N4in the composite.
authors.affiliation: School of Pulp and Paper Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China. Electronic address: anjunjian0000@163.com.
authors.forename: Junjian
authors.initials: J
authors.lastname: An
authors.affiliation: School of Pulp and Paper Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China.
authors.forename: Guangyan
authors.initials: G
authors.lastname: Zhang
authors.affiliation: School of Pulp and Paper Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China.
authors.forename: Rongfeng
authors.initials: R
authors.lastname: Zheng
authors.affiliation: School of Pulp and Paper Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China. Electronic address: ahwp1234@163.com.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
mesh_terms: D065966:Absorption, Physicochemical; D001729:Bismuth / Q000737:chemistry; D002384:Catalysis; D005290:Ferric Compounds / Q000737:chemistry; D008027:Light; D008031:Lignin / Q000032:analysis / Q000737:chemistry*; D008956:Models, Chemical; D009570:Nitriles / Q000737:chemistry; D010782:Photolysis; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D009570:Nitriles; D014874:Water Pollutants, Chemical; C000499:ferric oxide; C011206:cyanogen; D008031:Lignin; D001729:Bismuth
keywords: BiFeO(3); Degradation; Heterogeneous Fenton-like catalysis; Visible light catalyst; g-C(3)N(4) nanosheets