文献类型：期刊文献

英文题名：Well-Dispersed Fe2O3 Nanoparticles on g-C3N4 for Efficient and Stable Photo-Fenton Photocatalysis under Visible-Light Irradiation

作者：Zhou, Liang[1];Wang, Lingzhi[2,3];Zhang, Jinlong[2,3];Lei, Juying[1];Liu, Yongdi[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：2016

期号：34

起止页码：5387

外文期刊名：EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

收录：;EI(收录号：20231713955767);WOS:【SCI-EXPANDED(收录号:WOS:000389459000013)】；

基金：This work was financially supported by the National Nature Science Foundation of China (21407049), the China Postdoctoral Science Foundation (2015T80409) and the Shanghai Pujiang Program (14PJ1402100).

语种：英文

外文关键词：Photo-Fenton; g-C3N4; Methyl orange; Heterojunction; Photocatalysis; Nanoparticles Photooxidation

摘要：In this study, a highly efficient heterogeneous photo-Fenton system (Fe2O3/g-C3N4/H2O2/visible light) has been developed. The heterogeneous catalyst Fe2O3/g-C3N4 in this system was successfully prepared by growing Fe2O3 nanoparticles on the surface of g-C3N4. The Fe2O3 nanoparticles could achieve high dispersion on the surface of g-C3N4 and form a heterojunction with g-C3N4 to improve the charge separation. In addition, the combination of the Fenton's reagent Fe2O3/H2O2 and the photocatalyst g-C3N4 greatly enhances the rate of the Fenton's reaction with the assistance of the photocatalytic process. The results showed that the Fe2O3/g-C3N4 catalyst had a superior catalytic activity as compared with the single component of Fe2O3 or g-C3N4 and the mechanical mixture of Fe2O3 and g-C3N4. The catalyst prepared with 3 mL of FeCl3 aqueous solution shows the best photo-Fenton photocatalytic efficiency with a reaction rate constant of 0.02461 mgL(-1)min(-1), which is about 45.4, 8.4 and 7.2 times larger than that of pure Fe2O3 (0.0005418 mgL(-1)min(-1)), pure g-C3N4 (0.00294 mgL(-1)min(-1)) and the mechanically mixed Fe2O3/g-C3N4 (0.0034 mgL(-1)min(-1)), respectively. A possible mechanism for the visible-light-irradiated photo-Fenton photocatalysis is proposed, and the Fe2O3/g-C3N4 catalyst exhibited stable performance without obvious loss of catalytic activity after four successive runs, showing a good application prospect for the photo-oxidative degradation of organic contaminants in wastewater.