Synthesis of magnetic ZnFe2O4/graphene composite and its application in photocatalytic degradation of dyes
Synthesis of magnetic ZnFe2O4/graphene composite and its application in photocatalytic degradation of dyes
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磁性ZnFe2O4/石墨烯复合材料的合成及其在光催化降解染料中的应用
DOI：
10.1016/j.jallcom.2013.06.098
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发表时间：
2013-12
影响因子：
6.2
通讯作者：
Chunming Wang
中科院分区：
文献类型：
--
作者：
Daban Lu;Yan Zhang;Shaoxiong Lin;Letao Wang;Chunming Wang
采用溶剂热法一锅法成功制备了磁性ZnFe 2 O 4/石墨烯复合材料（ZnFe 2 O 4/G）。采用溶剂热法将氧化石墨烯（GO）还原为石墨烯，并在石墨烯片上同时生长ZnFe 2 O 4颗粒。在H2 O2存在下，ZnFe 2 O 4/G复合材料对罗丹明B（RhB）、甲基橙子（MO）和亚甲基蓝（MB）的可见光催化降解表现出很强的光催化活性。ZnFe 2 O 4/G复合材料具有光电化学降解染料的催化剂和在可见光照射下通过光电化学分解H2 O2产生强氧化剂羟基自由基（自由基dotOH）的双重功能。ZnFe_2O_4/G复合材料具有优良的磁性能，可在悬浮体系中磁性回收。因此，ZnFe 2 O 4/G磁性复合材料在染料废水处理和有机染料降解方面具有潜在的应用前景。
Magnetic ZnFe2O4/graphene composite (ZnFe2O4/G) has been successfully synthesized by a facile one-pot solvothermal method. Graphene oxide (GO) was reduced to graphene and the ZnFe2O4particles were simultaneously grown on the graphene sheets under the conditions generated in the solvothermal system. Importantly, the ZnFe2O4/G composite showed powerful visible-light-photocatalytic activity for the degradation of Rhodamine B (RhB), methyl orange (MO) and methylene blue (MB) in the presence of H2O2. The ZnFe2O4/G composite serves a dual function as the catalyst for photoelectrochemical degradation of dyes and the generator of a strong oxidant hydroxyl radical (radical dotOH) via photoelectrochemical decomposition of H2O2under visible light irradiation. ZnFe2O4/G composite has excellent magnetic properties, which makes it magnetically recyclable in a suspension system. Therefore, the ZnFe2O4/G magnetic composite may find potential applications in dye water treatment and the degradation of organic dyes.
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