炭载Ir金属催化剂的制备及其对氨氧化的电催化性能

doi:10.61558/2993-074X.1925

电化学（中英文） ›› 2008, Vol. 14 ›› Issue (4): 378-382. doi: 10.61558/2993-074X.1925

炭载Ir金属催化剂的制备及其对氨氧化的电催化性能

孔庆梅;韩益苹;邓玲娟;陆天虹;唐亚文;

南京师范大学化学与环境科学学院;咸阳市咸阳师范学院化学系;中国科学院长春应用化学研究所;

收稿日期:2008-11-28 修回日期:2008-11-28 出版日期:2008-11-28 发布日期:2008-11-28

Preparation and Electrocatalystic Performance of Ir/C Catalyst for Ammonia Oxidation

KONG Qing-mei1,HAN Yi-ping1,DENG Ling-Juan2,LU Tian-hong1,3,TANG Ya-wen1,2*

(1.College of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China,2.Department of Chemistry,Xianyang Normal University,Xianyang 712000,Shan-xi,China,3.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

Received:2008-11-28 Revised:2008-11-28 Published:2008-11-28 Online:2008-11-28

摘要/Abstract

摘要： 利用乙醇-水二元体系制备含质量分数为30%Ir的碳载Ir(Ir/C)催化剂.X射线衍射(XRD)谱和电化学测试分别表明,该催化剂Ir粒子的平均粒径约为2.2 nm.在NaC lO4电解液中,Ir/C催化剂对氨氧化的电催化活性与纯Ir催化剂的相似,但稳定性有明显增加.同时,NH3氧化的电流密度与NH3浓度呈现良好的线性关系,有望在定电位电解型NH3传感器中得到应用.

关键词: 碳载Ir催化剂, 氨气氧化, 电催化稳定性

Abstract: The Ir/C catalyst with 30%(by mass) Ir was prepared in the CH3CH2OH and H2O binary system.The X-ray diffraction(XRD) data showed that the average sizes of the Ir particles in the Ir/C catalyst was about 2.2 nm.The results of the electrochemical measurements indicated that the electrocatalytic activity of the Ir/C catalyst for the ammonia oxidation in the neutral NaClO4 solution was similar to the Ir catalyst,while electrocatalytic stability was much better than that of the Ir catalyst.Furthermore,the peak current density of the ammonia oxidation at the Ir/C catalyst electrode showed a good linear relationship with the ammonia concentration,illustrating that the Ir/C catalyst would have a good application prospect in the potential fixed electrolytic type ammonia sensor.

Key words: Ir/C catalyst, ammonia oxidation, electrocatalytic stability

中图分类号:

O643.3

孔庆梅, 韩益苹, 邓玲娟, 陆天虹, 唐亚文, . 炭载Ir金属催化剂的制备及其对氨氧化的电催化性能[J]. 电化学（中英文）, 2008, 14(4): 378-382.

KONG Qing-mei, HAN Yi-ping, DENG Ling-Juan, LU Tian-hong, TANG Ya-wen, . Preparation and Electrocatalystic Performance of Ir/C Catalyst for Ammonia Oxidation[J]. Journal of Electrochemistry, 2008, 14(4): 378-382.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.1925

https://electrochem.xmu.edu.cn/CN/Y2008/V14/I4/378

参考文献

[1]Wallgren K,Sotiropoulos S.Oxygen sensors based on anew design concept for amperometric solid state devices[J].Sensors and Actuators B:Chemical,1999,60(2~3):174-183. [2]CHEN Chang-lun(陈长伦),HE Jian-bo(何建波),LIUWei(刘伟),et al.The research advance of electro-chemical gas sensors[J].Sensor World(in Chinese),2004,4:11-15. [3]De Vooys A C A,Koper M T M,Van Santen R A,etal.The role of adsorbents in the electrochemical oxida-tion of ammonia on noble and transition metal electrodes[J].J Electroanal Chem,2001,506(2):127-137. [4]Endo K,Nakamura K,Katayama Y,et al.Pt-Me(Me=Ir,Ru,Ni)binary alloys as an ammonia oxidationanode[J].Electrochimica Acta,2004,49(15):2503-2509. [5]Endo K,Katayama Y,Miura T.Pt-Ir and Pt-Cu binaryalloys as the electrocatalyst for ammonia oxidation[J].Electrochimica Acta,2004,49(9~10):1635-1638. [6]Gootzen J F E,Wonders A H,Visscher W,et al.ADEMS and cyclic voltammetry study of NH3oxidation onplatinized platinum[J].Electrochim Acta,1998,43:1851-1861. [7]L幃pez de Mishima B A,Lescano D,Holgado T M,etal.Electrochemical oxidation of ammonia in alkaline so-lutions:its application to an amperometric sensor[J].Electrochimica Acta,1998,43:395-404. [8]Vidal-Iglesias F J,Solla-Gull幃n J,Rodr姫guez P,et al.Shape-dependent electrocatalysis:ammonia oxidation onplatinum nanoparticles with preferential(100)surfaces[J].Electrochem Comm,2004,6(10):1080-1084. [9]Vidal-Iglesias F J,Solla-Gull幃n J,Feliu J M,et al.DEMS study of ammonia oxidation on platinum basalplanes[J].J Electroanal Chem,2006,588:331-338. [10]XU Jian-Bo(徐建波),HUA Kai-Feng(华凯峰),WANG Yu-Jiang(王玉江),et al.Study of ampero-metric ammonia sensor[J].J Zhengzhou InstituteLight Industry(Natural Science),2004,19:39-42. [11]Tang Y W,Zhang L L,Wang Y A,et al.Preparationof a carbon supported Pt catalyst using an improved or-ganic sol method and its electrocatalytic activity formethanol oxidation[J].J Power Sources,2006,162:124-131. [12]Zhang LL,Lu TH,Bao J C,et al.Preparation meth-od of an ultrafine carbon supported Pd catalyst as an a-nodic catalyst in a direct formic acid fuel cell[J].Electrochem.Comm,2006,8:1625-1627. [13]Zhang L L,Tang Y W,Bao J C,et al.A carbon-sup-ported Pd-P catalyst as the anodic catalyst in a directformic acid fuel cell[J].J Power Sources,2006,162:177-179.

炭载Ir金属催化剂的制备及其对氨氧化的电催化性能

Preparation and Electrocatalystic Performance of Ir/C Catalyst for Ammonia Oxidation

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