Efficiency and Mechanism of Photocatalytic Oxidation of Norfloxacin in Wastewater by C/Fe-Bi2WO6

doi:10.11944/j.issn.1000-0518.2017.08.170019

Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (8): 936-945.DOI: 10.11944/j.issn.1000-0518.2017.08.170019

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Efficiency and Mechanism of Photocatalytic Oxidation of Norfloxacin in Wastewater by C/Fe-Bi₂WO₆

CHEN Shijie^a,TANG Xiaojun^a,CHEN Xi^a,LI Yingjie^a^*(),GAO Lidi^a,WANG Peng^b

^aCollege of Chemistry and Chemical Engineering,Qiqihar University Qiqihar,Heilongjiang 161006,China
^bSchool of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China

Received:2017-01-18 Accepted:2017-05-02 Published:2017-07-25 Online:2017-07-26
Contact: LI Yingjie
Supported by:
Supported by Research Business Special Fund of Heilongjiang Provincial Education Department(No.135109209)

Abstract

Abstract:

The C/Fe-Bi₂WO₆ photocatalyst was prepared by a two-step method, involving resin carbonization and hydrothermal reaction process. Comparative research on photoactivities of different catalysts was carried out. Influence of condition factors on photocatalytic oxidation degradation of norfloxacin(NOR) solution under simulated sunlight irradiation was investigated. The degrading reaction fits the first-order kinetics well under experimental conditions. After irradiation under a 500 W Xenon lamp for 60 min, NOR completely decomposed with the first order reaction rate constant(K_app) of 0.0751 min^-1 under the conditions that the initial concentration of NOR is 10 mg/L, the C/Fe-Bi₂WO₆ loading is 0.75 g/L, and the concentration of H₂O₂ is 200 mg/L at pH 7.0. The OH formation in C/Fe-Bi₂WO₆ photocatalytic oxidation was studied via molecular fluorescence spectrum, and the possible photocatalytic oxidation mechnasim and the degradation paths and intermediate products of NOR were proposed.

Key words: C/Fe-Bi₂WO₆, photocatalytic oxidation, norfloxacin

CHEN Shijie, TANG Xiaojun, CHEN Xi, LI Yingjie, GAO Lidi, WANG Peng. Efficiency and Mechanism of Photocatalytic Oxidation of Norfloxacin in Wastewater by C/Fe-Bi₂WO₆[J]. Chinese Journal of Applied Chemistry, 2017, 34(8): 936-945.

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Efficiency and Mechanism of Photocatalytic Oxidation of Norfloxacin in Wastewater by C/Fe-Bi₂WO₆

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