One-pot approach for synthesis of N-doped TiO2/ZnFe2O4 hybrid as an efficient photocatalyst for degradation of aqueous organic pollutants

Journal of Hazardous Materials
Yunjin YaoShaobin Wang

Abstract

N-doped TiO2/ZnFe2O4 catalysts were successfully prepared by coupling nitrogen modified TiO2 with ZnFe2O4 via a one-pot vapor-thermal method. The physicochemical properties of the as-prepared catalysts have been characterized using various spectroscopic and microscopic techniques. The UV-vis-light-driven photocatalytic activities of the hybrids were evaluated and the effects of the amount of photocatalyst, different types of dyes, catalyst stability on photodegradation of organic dyes were investigated. Moreover, degradation kinetics and mechanism as well as the roles of N doping, ZnFe2O4 and TiO2 have been analyzed. It was revealed that N-doped TiO2/ZnFe2O4 exhibited an improved performance compared with TiO2/ZnFe2O4 or ZnFe2O4 because of the formation of a heterostructure at the interface as well as the introduction of N species. Active species such as holes, electrons, hydroxyl radicals, and superoxide radicals involved in the photodegradation process were detected by using different types of scavengers. Because of ZnFe2O4 in the hybrid, the catalyst shows ferromagnetism, and thus, the hybrid catalyst is easily isolated from the reaction mixture after the photocatalytic experiments. This work not only offers a simple method ...Continue Reading

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Citations

Mar 22, 2016·Physical Chemistry Chemical Physics : PCCP·Huaqiang ZhuangXuxu Wang
May 31, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Jianling HuFengping Wang
Jul 7, 2018·Beilstein Journal of Nanotechnology·Rashmi AcharyaKulamani Parida
Jul 7, 2018·Environmental Science and Pollution Research International·Jinfeng LeiChangdao Mu
Jan 18, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Xixi MuJinxi Chen

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