MnHCF膜电极制备及其Cs~+分离性能
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摘要
采用循环伏安电沉积法制备出ITO/MnHCF膜电极,通过扫描电镜(SEM)、能谱(EDS)、红外光谱(IR)分析了膜的表面形貌和成分,并结合电沉积的循环伏安曲线,确定了电沉积条件为扫描电位区间-0.2~0.85V,扫描圈数50圈+50圈,扫描速率25mV/s。膜电极在1mol/L NaNO3溶液中具有可逆的电化学行为,在循环伏安条件下能够可逆地置入与置出Na+。初步考察了ITO/MnHCF膜电极对Cs~+的分离性能,研究结果表明,其对Cs~+的分离性能较好,氧化态膜在-0.2V条件下还原吸附Cs~+的去除率达到64.98%,可为MnHCF膜电极应用于核电厂放射性废液的处理提供参考。
The MnHCF film electrodes of ITO substrate were prepared by cyclic voltammetry electrodeposition.The surface morphology and composition of the films were characterized by scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and infrared spectroscopy(IR).And the optimal conditions for electrodeposition of film electrodes were detemined by combining with cyclic voltammetric curves of electrodeposition.The optimal conditions for electrodeposition of film electrodes are as follows:scan potential range-0.2-0.85 V,cycle number 50+50,scan rate 25 mV/s.The film electrodes has reversible electrochemical behavior in 1 mol/L NaNO3 solution,and Na+can reversibly intercalate intoand deintercalate from the film electrodes under cyclic voltammetric conditions.Cs~+ separation capacity of the films is investigated preliminarily.Experimental results show that it is good for separating Cs~+ and the removal rate of Cs~+ reaches 64.98% by applying-0.2 Vto oxidation state films.It provides reference for applying MnHCF film electrodes in treatments of liquid radioactive waste.
The MnHCF film electrodes of ITO substrate were prepared by cyclic voltammetry electrodeposition.The surface morphology and composition of the films were characterized by scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and infrared spectroscopy(IR).And the optimal conditions for electrodeposition of film electrodes were detemined by combining with cyclic voltammetric curves of electrodeposition.The optimal conditions for electrodeposition of film electrodes are as follows:scan potential range-0.2-0.85 V,cycle number 50+50,scan rate 25 mV/s.The film electrodes has reversible electrochemical behavior in 1 mol/L NaNO3 solution,and Na+can reversibly intercalate intoand deintercalate from the film electrodes under cyclic voltammetric conditions.Cs~+ separation capacity of the films is investigated preliminarily.Experimental results show that it is good for separating Cs~+ and the removal rate of Cs~+ reaches 64.98% by applying-0.2 Vto oxidation state films.It provides reference for applying MnHCF film electrodes in treatments of liquid radioactive waste.
引文
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[15]刘有芹,金松子,刘六战,等.铁氰化锰修饰玻碳电极的制备及其电化学行为[J].分析化学,2004,32(7):847-851.
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[18]Jayasri D,Sriman N S.Amperometric determination of hydrazine at manganese hexacyanoferrate modified graphite-wax composite electrode[J].J Hazard Mater,2007,144:348-354.
[19]毛祖秋,郝晓刚,李一兵,等.多排石墨芯NiHCF膜电极电化学控制Cs+分离[J].水处理技术,2009,35(8):55-58.
[2]Tacconi N R D,Rajeshwar K,Lezna R O.Metal hexacyanoferrates:electrosynthesis,in situ characterization,and applications[J].Chem Mater,2003,15:3046-3062.
[3]Tsai T H,Chen T W,Chen S M,et al.Nickel,copper and manganese hexacyanoferrate withpoly(3,4-ethylenedioxythiophene)hybrid film modified electrode[J].Russ J Electrochem,2012,48(3):291-301.
[4]Eftekhari A.Aluminum electrode modified with manganese hexacyanoferrate as a chemical sensor for hydrogen peroxide[J].Talanta,2001,55:395-402.
[5]蔡卓,莫丽君,宿燕婷,等.蛋氨酸在MnHCF修饰电极上的电化学行为及测定[J].广西大学学报(自然科学版),2010,35(2):238-240.
[6]Pang H,Zhang Y,Cheng T,et al.Uniform manganese hexacyanoferrate hydrate nanocubes featuring superior performance for low-cost supercapacitors and nonenzymatic electrochemical sensors[J].Nanoscale,2015,7(38):16012-16019.
[7]Takachi1 M,Fukuzumi Y,Moritomo Y.Concentration dependence of Li+/Na+diffusion in manganese hexacyanoferrates[J].Jpn J Appl Phys,2016,55(6):067101-1-6.
[8]侯建荣,李永国,俞杰,等.铁氰化钴薄膜电极去除溶液中Sr2+的初步研究[J].电源技术,2014,38(9):1698-1701.
[9]Kertesz V,Dunn N M,van Berkel G J.Electrochemistry-electrospray-mass spectrometry study of cesium uptake in nickel hexacyanoferrate films[J].Electrochim Acta,2002,47:1035-1042.
[10]Chen R Z,Tanaka H,Kawamoto T,et al.Preparation of a film of copper hexacyanoferrate nanoparticles for electrochemical removal of cesium from radioactive wastewater[J].Electrochem Commun,2012,25:23-25.
[11]Henrik P G,Korshin G V.Separation of cesium from high ionic strength solutions using a cobalt hexacyanoferrate-modified graphite electrode[J].Environ Sci Techno1,1999,33:2633-2637.
[12]Yilmaz A E,Boncukcuoglu R,Yilmaz M T,et al.Adsorption of boron from boron-containing wastewaters by ion exchange in a continuous reactor[J].J Hazard Mater,2005,117(2-3):221-226.
[13]Lilga M A,Orth R J,Sukamto J P H,et al.Metal ion separations using electrically switched ion exchange[J].Sep Purif Technol,1997,11(3):147-158.
[14]甘小燕,李效民,高相东,等.电化学沉积法制备纳米多孔ZnO/曙红复合薄膜[J].无机材料学报,2009,24(1):73-78.
[15]刘有芹,金松子,刘六战,等.铁氰化锰修饰玻碳电极的制备及其电化学行为[J].分析化学,2004,32(7):847-851.
[16]Larabi-Gruet N,Peulon S,Lacroix A,et al.Studies of electrodeposition from Mn(Ⅱ)species of thin layers of birnessite onto transparent semiconductor[J].Electrochim Acta,2008,53(24):7281-7287.
[17]Jayasri D,Sriman N S.Manganese(Ⅱ)hexacyanoferrate based renewable amperometric sensor for the determination of butylated hydroxyanisole in food products[J].Food Chem,2007,101:607-614.
[18]Jayasri D,Sriman N S.Amperometric determination of hydrazine at manganese hexacyanoferrate modified graphite-wax composite electrode[J].J Hazard Mater,2007,144:348-354.
[19]毛祖秋,郝晓刚,李一兵,等.多排石墨芯NiHCF膜电极电化学控制Cs+分离[J].水处理技术,2009,35(8):55-58.