1. Removing lignin model pollutants with BiFeO 3 -g-C 3 N 4 compound as an efficient visible-light-heterogeneous Fenton-like catalyst.
- Author
-
An J, Zhang G, Zheng R, and Wang P
- Subjects
- Absorption, Physicochemical, Bismuth chemistry, Catalysis, Ferric Compounds chemistry, Light, Lignin analysis, Nitriles chemistry, Photolysis, Lignin chemistry, Models, Chemical, Water Pollutants, Chemical chemistry
- Abstract
BiFeO
3 -g-C3 N4 nanoscaled composite was prepared with a hydrothermal method and evaluated as a highly efficient photo-Fenton like catalyst under visible light irradiation. The BiFeO3 -g-C3 N4 composite 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-C3 N4 : 35.59m2 /g>BiFeO3 : 7.42m2 /g) and the adsorption form of π-π stack between g-C3 N4 and guaiacol. The composite exhibited excellent visible light-Fenton like catalysis activity, being influenced by the solution pH value and the proportions of BiFeO3 and g-C3 N4 nanosheets. Under optimal conditions with visible light irradiation, the BiFeO3 -g-C3 N4 composite 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 BiFeO3 and the mixture of BiFeO3 and g-C3 N4 nanosheets, respectively. The significantly enhanced visible light-Fenton like catalytic properties of the BiFeO3 -g-C3 N4 composite in comparison with that of BiFeO3 was attributed to a large surface area, much increased adsorption capacity and the semiconductor coupling effect between BiFeO3 and g-C3 N4 in the composite., (Copyright © 2016. Published by Elsevier B.V.)- Published
- 2016
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