| MnO2@ Graphite电极类电Fenton降解有毒有机污染物 |
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| 引用本文： | 刘栓,邓安平,赵小蓉,陈登霞,何燕,李瑞萍,黄应平.MnO2@ Graphite电极类电Fenton降解有毒有机污染物[J].环境科学与技术,2011,34(10):29-34. |
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| 作者姓名： | 刘栓 邓安平 赵小蓉 陈登霞 何燕 李瑞萍 黄应平 |
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| 作者单位： | 三峡库区生态环境教育部工程研究中心(三峡大学),湖北宜昌,443002 |
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| 基金项目： | 国家重点基础研究发展计划(973)前期研究项目(2008CB417206); 国家自然科学基金(20877048); 湖北省创新群体基金(2009CDA020) |
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| 摘 要： | 制备了二氧化锰复合石墨(MnO2@graphite)电极,通过XRD,TEM对电极材料进行表征,并通过电化学工作系统(循环伏安法,线性扫描伏安法,计时电量法)对MnO2@graphite电极的电催化机理进行了研究.以有机染料罗丹明B( RhodamineB,RhB)和2,4-二氯苯酚(2,4-DCP)为对象,探讨了 p...
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| 关 键 词： | 二氧化锰 石墨 类电Fenton ·OH |
Degradation of Organic Pollutant by MnO_2@Graphite Electrode in Electro-Fenton-like System |
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| LIU Shuan,DENG An-ping,ZHAO Xiao-rong,CHEN Deng-xia,HE Yan,LI Rui-ping,HUANG Ying-ping.Degradation of Organic Pollutant by MnO_2@Graphite Electrode in Electro-Fenton-like System[J].Environmental Science and Technology,2011,34(10):29-34. |
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| Authors: | LIU Shuan DENG An-ping ZHAO Xiao-rong CHEN Deng-xia HE Yan LI Rui-ping HUANG Ying-ping |
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| Institution: | LIU Shuan,DENG An-ping,ZHAO Xiao-rong,CHEN Deng-xia,HE Yan,LI Rui-ping,HUANG Ying-ping(Engineering Research Centre of Ecoenvironment in Three Gorges Reservoir Region of Ministry of Education,Three Gorges University,Yichang 443002,China) |
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| Abstract: | A new electrode was synthesized by pressing MnO2 and graphite,detected by X-ray diffraction(XRD) and transmission electron microscopy(TEM).Electrocatalytic mechanism of the electrode was studied by electrochemical work system such as cyclic voltammetry,linear sweep voltammetry and time power method.Electrocatalytic characteristics of electro-Fenton-like system in neutral pH(7.0) was studied by degrading organic dye Rhodamine B(RhB) and 2,4-dichlorophenol(2,4-DCP).It was found that 100% degradation of 1.0×10-5 mol/L RhB was achieved in 120 min with applied voltage of 6 V and supporting electrolyte of 10 g/L NaSO4.The deep degradation process of RhB was studied by UV-visible spectrum(UV-vis),IR and total organic carbon(TOC).The findings showed that RhB and 2,4-DCP were degraded effectively with the mineralization ratio of RhB 67.6% at 4 h and DCP 84.9% at 7 h respectively.Meanwhile horseradish peroxidase(POD)and benzoic acid fluorescence analysis method were used to detect the concentration of hydrogen peroxide(H2O2)and hydrogen radicals(.OH).The experiment results indicated that electrocatalysis degradation of organic matters referred to.OH radical mechanism. |
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| Keywords: | manganese graphite electro-Fenton-like hydroxyl radical |
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