标题：Visible light-assisted heterogeneous Fenton with ZnFe2O4 for the degradation of Orange II in wate作者：Cai, Chun; Zhang, Zhuoyue; Liu, Jin; Shan, Ni; Zhang, Hui; Dionysiou,Dionysios D.

来源出版物：APPLIED CATALYSIS B-ENVIRONMENTAL 卷：182 页：456-468 DOI：10.1016/j.apcatb.2015.09.056 出版年：MAR 2016

摘要：In this study, a visible (Vis) light response photocatalyst was synthesized via a simple reduction-oxidation method. The structure, morphology and optical properties of the catalyst were well characterized. The absorption capability of ZnFe2O4 in visible-light region was demonstrated by the high rate of Orange II decolorization under Vis/ZnFe2O4/H2O2 process. Guided by studies to explore the effects of radical scavengers and to quantify the yield of hydroxyl radical ((OH)-O-center dot) production, (OH)-O-center dot on the surface of the catalyst was found to be the dominating reactive species for the Orange II removal. Moreover, ZnFe2O4 maintained high activity, crystallinity and extremely low iron and zinc leaching during repeated experiments. The intermediate products were identified by GC-MS and a possible pathway is accordingly proposed to elucidate the mechanism of Orange II degradation by (OH)-O-center dot. In addition, high extent of mineralization was obtained as the chemical oxygen demand (COD) and total organic carbon (TOC) removal efficiencies were 86.6% and 60.4%, respectively, within 60 min reaction. The toxicity tests with activated sludge indicated that the toxicity of the solution increased during the first 30 min but then decreased significantly as the oxidation proceeded.

入藏号：WOS:000365050700049

文献类型：Article

语种：English

作者关键词：ZnFe2O4 nanoparticles, Visible-light irradiation, Hydroxyl radical, Photocatalysis, Fenton

扩展关键词：PHOTOCATALYTIC DEGRADATION; MAGNETIC NANOPARTICLES; OXIDATIVE-DEGRADATION; FE-CO/SBA-15 CATALYST; HYDROXYL RADICALS; AQUEOUS-SOLUTION; FACILE SYNTHESIS; AZO DYES; PHENOL; PEROXYMONOSULFATE

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn; dionysios.d.dionysiou@uc.edu

地址：

[Cai, Chun; Zhang, Zhuoyue; Liu, Jin; Shan, Ni; Zhang, Hui]Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Cai, Chun; Dionysiou, Dionysios D.] Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA.

研究方向：Chemistry; Engineering

ISSN：0926-3373

eISSN:1873-3883

影响因子（2014）：7.435