Core double-shell MnFe2O4@rGO@TiO2 superparamagnetic photocatalyst for wastewater treatment under solar light

被引：53
作者：
Abdel-Wahed, Mahmoud S. [1 ]
El-Kalliny, Amer S. [1 ]
Badawy, Mohamed I. [1 ]
Attia, Mohamed S. [2 ]
Gad-Allah, Tarek A. [1 ,3 ]
机构：
[1] Natl Res Ctr, Water Pollut Res Dept, 33 El Buhouth St, Giza 12622, Egypt
[2] Ain Shams Univ, Fac Sci, Chem Dept, Cairo 11566, Egypt
[3] Southwest Petr Univ, Sch Mat Sci & Engn, Ctr New Energy Mat & Technol, Xindu Rd 8, Chengdu 610500, Sichuan, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2020年 / 382卷
关键词：
Photocatalysis; Paramagnetic material; Core double-shell; Wastewater treatment; Solar light; REDUCED GRAPHENE OXIDE; NANOCOMPOSITE; DEGRADATION; FABRICATION; NANOPARTICLES; NANOFIBERS; REDUCTION; COMPOSITE;
D O I：
10.1016/j.cej.2019.122936
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Core double-shell MnFe2O4@reduced graphene oxide (rGO)@TiO2 magnetic photocatalyst was synthesized at different calcination temperatures using different initial amounts of graphene oxide. The prepared materials were fully characterized. The performance of the prepared photocatalysts at different preparation conditions was evaluated towards the degradation of ofloxacin under solar light. The results revealed that MnFe2O4@rGO@TiO2 of 50 mg rGO (calcined at 400 degrees C for 2 h) has the best photodegradation rate at natural pH 5.4 of water polluted with ofloxacin. Moreover, MnFe2O4@(50 mg)rGO@TiO2 has a superparamagnetic character with high saturation magnetism (33 emu/g), which makes its recovery from the treated water effluent by magnet is more applicable. The study showed also the availability of reusing the prepared core double-shell photocatalyst, indicating that this photocatalyst is promising for the wastewater treatment process.
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页数：9
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