Fe_3O_4/三维石墨烯非均相Fenton催化降解酸性红B
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摘要
采用原位氧化还原法制备了三维石墨烯负载型Fe_3O_4(Fe_3O_4/3D GN)非均相Fenton反应催化剂,对其进行了表征,并用于酸性红B染料废水的Fenton氧化降解。表征结果显示:制备的Fe_3O_4/3D GN具有相互贯通的独特三维网状结构,Fe_3O_4纳米颗粒均匀分散在石墨烯片层中。实验结果表明:Fe_3O_4/3D GN具有较高的催化活性和稳定性。Fe_3O_4/3D GN非均相Fenton催化降解酸性红B的最佳工艺条件为:H2O2投加量0.67 m L/L,催化剂投加量1 g/L,初始溶液pH为6。在此最佳工艺条件下反应30 min,酸性红B染料废水的脱色率达到95.64%。
Three-dimensional graphene supported Fe_3O_4(Fe_3O_4/3D GN)heterogeneous Fenton reaction catalyst hasbeen prepared by in-situ oxidation-reduction method,characterized,and used for Fenton oxidation degradation ofacid red B dye wastewater. The characterization results show that the Fe_3O_4/3D GN prepared has an interconnect-ed,unique 3D net structure. Fe_3O_4 nano-particles are dispersed homogeneously in grapheme layers. The experi-mental results show that Fe_3O_4/3D GN has higher catalytic activity and stability. The optimum degradation condi-tions of Fe_3O_4/3D GN heterogeneous Fenton catalytic degradation acid red B are as follows:the dosage of H_2O_2 is0.67 m L/L and catalyst 1 g/L,and initial solution pH 6. After it is reacted for 30 min under these optimal condi-tions,the decolorization rate of acid red B is as high as 95.64%.
Three-dimensional graphene supported Fe_3O_4(Fe_3O_4/3D GN)heterogeneous Fenton reaction catalyst hasbeen prepared by in-situ oxidation-reduction method,characterized,and used for Fenton oxidation degradation ofacid red B dye wastewater. The characterization results show that the Fe_3O_4/3D GN prepared has an interconnect-ed,unique 3D net structure. Fe_3O_4 nano-particles are dispersed homogeneously in grapheme layers. The experi-mental results show that Fe_3O_4/3D GN has higher catalytic activity and stability. The optimum degradation condi-tions of Fe_3O_4/3D GN heterogeneous Fenton catalytic degradation acid red B are as follows:the dosage of H_2O_2 is0.67 m L/L and catalyst 1 g/L,and initial solution pH 6. After it is reacted for 30 min under these optimal condi-tions,the decolorization rate of acid red B is as high as 95.64%.
引文
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[3]窦晓文,林小琴,张华灵,等.非均相Fenton法降解水中橙黄G的研究[J].安徽农业科学,2011,39(9):5187-5190.
[4]方嘉声,于光认,陈晓春,等.石墨烯掺杂分子筛负载氧化铁芬顿催化降解苯酚影响因素的研究[J].环境科学学报,2015,35(11):3529-3537.
[5]李建旭,韩永忠,吴晓根,等.Fe2+/活性炭非均相Fenton试剂氧化法降解苯酚[J].化工环保,2011,31(4):361-364.
[6]王旭珍,刘宁,胡涵,等.3D二硫化钼/石墨烯组装体的制备及其催化脱硫性能[J].新型炭材料,2014,29(2):81-88.
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[8]Tong Xin,Wang Hui,Wang Gang,et al.Controllable synthesis of graphene sheets with different numbers of layers and effect of the number of graphene layers on the specific capacity of anode material in lithium-ion batteries[J].Journal of Solid State Chemistry,2011,184(5):982-989.