在线阅读 --自然科学版 2014年1期《热解合成Pt-Ni催化剂及对乙醇电催化氧化》
热解合成Pt-Ni催化剂及对乙醇电催化氧化--[在线阅读]
曹艳丽, 刘璐, 刘丽坤, 丁克强
河北师范大学 化学与材料科学学院, 河北 石家庄 050024
起止页码: 64--67页
DOI: 10.11826/j.issn.1000-5854.2014.01.014
摘要
不引入其他还原剂,在多壁碳纳米管(MWCNTs)和铂镍前驱体存在的条件下,采用直接热解方法,在MWCNTs表面制备出Ni掺杂的铂基催化剂(PtxNiy/MWCNTs).通过XRD和EDX的测试证明了Pt-Ni纳米颗粒在MWCNTs表面的生成.TEM的照片表明样品颗粒的平均粒径在4~8nm.在碱性溶液中,利用CV方法测试了制备的PtxNiy/MWCNTs催化剂对乙醇氧化的电催化行为.结果显示,Pt1Ni1/MWCNTs在所制备的催化剂中对乙醇的电化学氧化具有高的催化活性.

Ethanol Oxidation Reaction on the Pt-Ni Composite Catalyst Prepared by Pyrolysis Process in an Alkaline Solution
CAO Yanli, LIU Lu, LIU Likun, DING Keqiang
College of Chemistry and Material Sciences, Hebei Normal University, Hebei Shijiazhuang 050024, China
Abstract:
In the absence of other reducing agents, multi-walled carbon nanotubes(MWCNTs) supported Pt-Ni bimetallic catalysts were prepared for the first time by a facile method of pyrolysis.XRD and EDX analysis strongly demonstrated the formation of Pt-Ni nanoparticles on the surface of MWCNTs.TEM images revealed that the average particle sizes ranged from 4 to 8nm.The electrocatalytic activities of PtxNiy/MWCNTs towards ethanol oxidation reaction(EOR) were investigated by CV, revealing that the catalyst of Pt1Ni1/MWCNTs has the best electrocalytic activity toward EOR among the as-prepared catalysts.

收稿日期: 2013-4-16
基金项目: 国家自然科学基金(21173066);河北省自然科学基金(B2011205014);河北师范大学应用开发基金(L2010k03)

参考文献:
[1]PROCH S,WIRTH M,WHITE H S,et al.Strong Effects of Cluster Size and Air Exposure on Oxygen Reduction and Carbon Oxidation Electrocatalysis by Size-selected Ptn(n≤11) on Glassy Carbon Electrodes [J].Journal of the America Chemistry Society,2013,135(8):3073-3086.
[2]COLMATI FLAVI O,ANTOLINI E,GONZALEZ E R.Effect of Temperature on the Mechanism of Ethanol Oxidation on Carbon Supported Pt,PtRu and Pt3Sn Electrocatalysts [J].Journal of Power Sources,2006,157(1):98-103.
[3]KADIRGAN F,BEYHANE S,ATILAN T.Preparation and Characterization of Nano-sized Pt-Pd/C Catalysts and Comparison of Their Electro-activity Toward Methanol and Ethanol Oxidation [J].International Journal of Hydrogen Energy,2009,34(10):4312-4320.
[4]BIUCK H,DADASHPOUR E.Electrooxidation of 2-propanol and 2-butanol on the Pt-Ni Alloy Nanoparticles in Acidic Media [J].Electrochimica Acta,2013,88(15):157-164.
[5]HU Yaojuan,WU Ping,ZHANG Hu,et al.Synthesis of Graphene-supported Hollow Pt-Ni Nanocatalysts for Highly Active Electrocatalysis Toward the Methanol Oxidation Reaction [J].Electrochimica Acta,2012,85(15):314-321.
[6]ZHAO Yu,YANG Lijun,CHEN Sheng,et al.Can Boron and Nitrogen Co-doping Improve Oxygen Reduction Reaction Activity of Carbon Nanotubes [J].Journal of the America Chemistry Society,2013,135:1201-1204.
[7]DING Keqiang,YANG Guokai.Using RTILs of EMIBF4 as “Water” to Prepare Palladium Nanoparticles onto MWCNTs by Pyrolysis of PdCl2 [J].Electrochimica Acta,2010,55(7):2319-2324.
[8]DING Keqiang,YANG Hongwei,WANG Yahui,et al.Gold(Au) Huge Particles Prepared by a Simple Pyrolysis of AuCl3 Dissolved in Various Solvents in the Presence of MWCNTs [J].International Journal of Electrochemical Science,2012,7:4663-4672.
[9]WANG Yahui,YANG Fuli,YANG Hongwei,et al.Oxygen Reduction Reaction(ORR) on Huge Gold(Au) Particles Prepared by a Pyrolysis Process of AuCl3 Dissolved in Distilled Water in the Presence of MWCNTs [J].Journal of the Chinese Chemical Society,2013,60(1):73-80.
[10]DING Keqiang,WANG Yahui,YANG Hongwei,et al.Electrocatalytic Activity of Multi-walled Carbon Nanotubes-supported PtxPdy Catalysts Prepared by a Pyrolysis Process Toward Ethanoloxidation Reaction [J].Electrochimica Acta,2013,100:147-156.
[11]NGUYEN V L,MICHITA O,TONG D H.A Comparative Study of Pt and Pt-Pd Core-shell Nanocatalysts [J].Electrochimica Acta,2011,56(25):9133-9143.