Magnetic Mn-Doped Fe3O4 hollow Microsphere/RGO heterogeneous Photo-Fenton Catalyst for high efficiency degradation of organic pollutant at neutral pH

被引:34
作者
Chen, Zhongtao [1 ]
Zheng, Yanmei [1 ]
Liu, Yuanyuan [1 ]
Zhang, Weijie [1 ]
Wang, Yixuan [1 ]
Guo, Xinli [1 ]
Tang, Xuan [1 ]
Zhang, Yao [1 ]
Wang, Zengmei [1 ]
Zhang, Tong [2 ]
机构
[1] Southeast Univ, Sch Mat Sci & Engn, Jiangsu Key Lab Adv Metall Mat, Nanjing 211189, Jiangsu, Peoples R China
[2] Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Mn-doped Fe3O4 hollow microsphere; Reduce oxide graphene (RGO); Heterogeneous photo-fenton catalyst; Neutral pH; STOBER-LIKE METHOD; GRAPHENE OXIDE; FACILE SYNTHESIS; BISPHENOL-A; NANOCOMPOSITE; COMPOSITE; NANOPARTICLES; PERFORMANCE; FRAMEWORK; DECONTAMINATION;
D O I
10.1016/j.matchemphys.2019.121893
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Development of high-efficiency, low-cost and environmentally friend catalyst for degradation of organic pollutant in water is still a challenge issue. In this research, we prepared a novel Mn-doped Fe3O4 magnetic hollow microsphere/reduced oxide graphene (RGO) hybrid (Mn-Fe3O4/RGO) by a facile solvothermal process followed by a reduction of GO via NaBH4. The as-prepared Mn-Fe3O4/RGO is used as a heterogeneous Photo-Fenton catalyst for degrading Rhodamine B (RhB) and exhibits high efficiency degradation about 96.4% with the low dosage concentration of catalyst 0.2 g L-1 in the presence of H2O2 at the natural pH (similar to 6.5) within 80 min under UV-vis illumination, while the removal efficiency is 91% and 85% at pH 2 and 11, respectively. Furthermore, this novel magnetic Photo-Fenton catalyst remains high degradation efficiency of about 90% after ten cycles and can be easily separated from the solution via an external magnetic field, showing an excellent recyclability, a long-term chemical stability and a great potential for practical wastewater treatment application.
引用
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页数:8
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