水合肼在BmimPF_6银电极上的电化学行为研究

doi:10.61558/2993-074X.3343

摘要/Abstract

摘要： 应用电化学循环伏安法,以银作工作电极研究了水合肼在离子液体BmimPF6中的氧化过程.结果显示,银离子对水合肼的氧化过程具有催化作用,其氧化峰电位0.16V(vs.SCE)电催化反应速率决定步骤为1电子的氧化还原过程.在0～3.4mmol/L肼浓度范围内,催化反应峰电流与肼浓度间具有良好的线性关系.

关键词: 离子液体, 水合肼, 电催化, BmimPF6

Abstract: In this work,the electrochemical behaviors of hydrazine at Ag electrode in the room temperature ionic liquid,BmimPF6,were studied by cyclic voltammetry. Results suggested that Ag electrode showed a good catalytic activity towards hydrazine oxidation. The catalytic peak current showed a good linear relationship with the hydrazine concentration in the range of 0 ～ 3. 4 mmol/L. The rate-determining step of the electrocatalytic reaction involved one electron transfer form hydrazine molecule to Ag + ion.

Key words: ionic liquid, hydrazine, electrocatalytsis, BmimPF6

中图分类号:

O646.54

孙洁, 李艳, 冯依玲, 王荣, 吴霞琴, . 水合肼在BmimPF_6银电极上的电化学行为研究[J]. 电化学（中英文）, 2010, 16(2): 198-201.

SUN Jie, LI Yan, FENG Yi-ling, WANG Rong , WU Xia-qin . Electrochemical Behaviors of Hydrazine in BmimPF_6 Solution at Ag Electrode[J]. Journal of Electrochemistry, 2010, 16(2): 198-201.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.3343

https://electrochem.xmu.edu.cn/CN/Y2010/V16/I2/198

参考文献

[1]Rosca V,Koper T M M.Electrocatalytic oxidation of hy-drazine on platinum electrodes in alkaline solution[J].Electrochimica Acta,2008,53(16):5199-5205. [2]Fleischmann M,Korinek K,Pletcher D.The oxidation of hydrazine at a nickel anode in alkaline solution[J].Journal of Electroanalytical Chemistry,1972,34(2):499-503. [3]Fukumoto Y,Matsunaga T,Hayashi T.Electrocatalytic activities of metal electrodes in anodic oxidation of hy-drazine in alkaline solution[J].Electrochimica Acta,1981,26(5):631-636. [4]Eisner U,Gileadi E.Anodic oxidation of hydrazine and its derivatives:Part I.The oxidation of hydrazine on gold electrodes in acid solutions[J].Journal of Electroana-lytical Chemistry,1970,28(1):81-92. [5]Korˇínek K,Koryta J,MusilováM.Electro-oxidation of hydrazine on mercury,silver and gold electrodes in al-kaline solutions[J].Journal of Electroanalytical Chem-istry,1969,21(2):319-327. [6]Asazawa K,Yamada K,Tanaka H,et al.Electrochemical oxidation of hydrazine and its derivatives on the surface of metal electrodes in alkaline media[J].Journal of Power Sources,2009,191(2):362-365. [7]Abbaspour A,Kamyabi M A.Electrocatalytic oxidation of hydrazine on a carbon paste electrode modified by hybrid hexacyanoferrates of copper and cobalt films[J].Journal of Electroanalytical Chemistry,2005,576(1):73-83. [8]Golabi S M,Zare H R,Hamzehloo M.Electrocatalytic oxidation of hydrazine at a pyrocatechol violet(PCV)chemically modified electrode[J].Microchemical Jour-nal,2001,69(2):13-23. [9]Peng Q Y,Guarr T F.Electro-oxidation of hydrazine at electrodes modified with polymeric cobalt phthalocya-nine[J].Electrochimica Acta,1994,39(17):2629-2632. [10]Li X F,Zhang S X,Sun C Q.Fabrication of a covalent-ly attached multilayer film electrode containing cobalt phthalocyanine and its electrocatalytic oxidation of hy-drazine[J].Journal of Electroanalytical Chemistry,2003,553(30):139-145. [11]Cao X Q,Wang B C,Su Q.Anodic oxidation of hydra-zine on glassy carbon electrodes in acetonitrile[J].Journal of Electroanalytical Chemistry,1993,361(1/2):211-214. [12]Michlmayr M,Sawyer D T.Electrochemical oxidation of hydrazine and of the dimethylhydrazines in dimethyl-sulfoxide at a platinum electrode[J].Journal of Elec-troanalytical Chemistry,1969,23(3):375-385. [13]Zhu Guo-yang(朱国阳),Wang Rong(王荣),Wu Xia-qin(吴霞琴),et al.Application of room temperature i-onic liquid in gas and humidity sensors[J].Chemical Sensors(化学传感器),2007,27(3):9-16. [14]Wang R,Okima T,Kitamura F,et a1.A novel ampero-metric02gas sensor based on supported room tempera-ture ionic liquid porous polyethylene membrane-coated electrodes[J].Electroanalysis,2004,16(1/2):66-72. [15]Buzzeo M C,Giovanelli D,Lawrence N S,et al.Eluci-dation of the electrochemical oxidation pathway of am-monia in dimethylform amide and the room temperature ionic liquid,1-Ethyl-3-methvllimidazolium bis(trifluo-ro-methylsulfony1)imide[J].Electroanalysis,2004,16(11):888-896. [16]Cai Qi(蔡琪),Xian Yue-zhong(鲜跃仲),Li Hui(李辉),et al.Study on a sulfur dioxide electrochemical sensor with ionic liquid as electrolyte(in Chinese)[J].Journal of East China Normal University(Natural Science)(华东师范大学学报),2001,3:57-60. [17]Lu X B,Hu J Q,Yao X.Composite system based on chitosan and room-temperature ionic liquid:Direct e-lectrochemistry and electrocatalysis of hemoglobin[J].Biomacromolecules,2006,(7):975-980. [18]NuLi Y,Yang J,Wu R.Reversible deposition and dis-solution of magnesium from BMIMBF4ionic liquid[J].Electrochemistry Communications,2005,7(11):1105-1110. [19]Constanze V,Graig E B,Christopher H,et al.Electroa-nalytical determination of trace chloride in room-tem-perature ionic liquids[J].Analytical Chemistry,2004,76(7):1998-2003. [20]Ji Wei-wei(季巍巍),Xu Li-qun(徐立群),Li Dong-mei(李冬梅),et al.Effect of CH2Cl2on the redox be-havior of ferrocene in ionic liquid BminPF6[J].Elec-trochemistry(电化学),2008,14(4):411-414. [21]Allen J Bard,Larry R Faulkner.Electrochemical meth-ods fundamentals and applications(in Chinese)[M].Beijing:Chemical Industry Press,2005,349-351.