在离子液体1-乙基咪唑三氟乙酸盐(HElmTfa)中,采用循环伏安法在铂电极表面修饰聚吡咯(PPY),制得PPy-HEImTfa/Pt,并研究了其对甲酸的电催化氧化性能.与相同条件下的铂基底电极相比,PPy-HEImTfa/Pt对甲酸的电催化氧化性能有很大的提高.原位红外光谱表明,PPy-HElmTfa能降低中间体CO等对铂电极的毒化作用,促进甲酸直接氧化生成CO_2.
A platinum electrode was modified with polypyrrole in the ionic liquid I-ethylimidazolium trifluoroacetate (PPy-HEImTfa/Pt) using cyclic voltammetry, and its electrocatalytic performance for the oxidation of formic acid was tested. Compared to the Pt electrode, the electrocatalytic activity of PPy-HEImTfa/Pt for the oxidation of formic acid was greatly improved. The complete oxidation of formic acid to CO_2 was followed by in situ FT-IR, which showed that with PPy-HEImTfa, formic acid oxidation occurred by a direct pathway mechanism and CO poisoning was much decreased.
参考文献
| [1] | 邵玉艳,尹鸽平,张健,高云智,史鹏飞.碳纳米管电极上原位沉积Pt纳米颗粒[J].催化学报,2006(07):606-610. |
| [2] | Selvaraj V;Alagar M;Sathish Kumar K .[J].Applied Catalysis B:Environmental,2007,75:129. |
| [3] | Rajesh B;Ravindranathan Thampi K;Bonard J M;Mathieu H J,Xanthopoulos N,Viswanathan B.[J].Chemical Communications,2003:2022. |
| [4] | Mazurkiewicz JH.;Innis PC.;Wallace GG.;MacFarlane DR.;Forsyth M. .Conducting polymer electrochemistry in ionic liquids.[J].Synthetic Metals,2003(1/3):31-32. |
| [5] | Mascaro L H;Goncalves D;Bulhoes L O S .[J].Thin Solis Film,2004,461:243. |
| [6] | Sekiguchi K;Atobe M;Fuchigami T .[J].Journal of Electroanalytical Chemistry,2003,557:1. |
| [7] | Li MC;Ma CA;Liu BY;Jin ZM .A novel electrolyte 1-ethylimidazolium trifluoroacetate used for electropolymerization of aniline[J].Electrochemistry communications,2005(2):209-212. |
| [8] | Chen Y X;Heinen M;Jusys Z;Behm R J .[J].Langmuir,2006,22:10399. |
| [9] | Malinauskas A. .Electrocatalysis at conducting polymers [Review][J].Synthetic Metals,1999(2):75-83. |
| [10] | Nirmala Grace A;Pandian K .[J].Electrochemistry Communications,2006,8:1340. |
| [11] | M. Choy M.;F. Hahn;J.-M. Leger;C. Lamy;J.M. Ortega .In situ Fourier transformed infrared reflectance spectroscopy study of the effect of poly-pDMB film modified platinum electrodes on the electrooxidation of formic acid[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2007(7/8):3611-3618. |
| [12] | 陈声培,黄桃,甄春花,张麒,贡辉,孙世刚.表面合金电催化剂上甲酸氧化的原位FTIR反射光谱研究[J].光谱学与光谱分析,2003(02):273-275. |
| [13] | Yang Y Y;Sun S G;Gu Y J;Zhou Z Y Zhen C H .[J].Electro-chim Acta,2001,46:4339. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%