欢迎登录材料期刊网

材料期刊网

中国科学院金属研究所 科学出版社
高级检索
  1. 首页
  2. 期刊
  3. 稀有金属（英文版）
  4. Preparation and catalytic activity of CO-resistant catalyst core-shell Au@Pt/C for methanol oxidation

稀有金属（英文版）, 2012, 31(5): 451-456. doi: 10.1007/s12598-012-0538-z

FENG Rongjuan 1, , LI Min 2, , LIU Jiaxiang 3,

1.College of Materials Science and Engineering, Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

2.College of Materials Science and Engineering, Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

3.College of Materials Science and Engineering, Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

基金项目:   This project was supported financially by the National Natural Science Foundation of China(51074012)   Data supports of this work were provided by Professor Yu Yingchun of Beijing University of Chemical Technology  

Preparation and catalytic activity of CO-resistant catalyst core-shell Au@Pt/C for methanol oxidation

FENG Rongjuan 1, , LI Min 2, , LIU Jiaxiang 3,

1.College of Materials Science and Engineering, Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

2.College of Materials Science and Engineering, Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

3.College of Materials Science and Engineering, Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

Keywords： core-shell Au@Pt nanoparticles

Au@Pt core-shell nanoparticles were successfully synthesized by a successive reduction method and then assembled on Vulcan XC-72 carbon surface.Furthermore,its composition,morphology,structure,and activity towards methanol oxidation were characterized by UV-vis spectrometry,transmission electron microscopy (TEM),high-resolution TEM (HRTEM),X-ray diffraction (XRD),X-ray photoelectron spectroscopy (XPS),and cyclic voltammetry (CV).Results reveal that Au@Pt/C catalyst has better activity towards methanol oxidation than the pure platinum prepared under the same conditions.When the atomic ratio of Au to Pt in the prepared Au@Pt/C catalyst is 1∶2,this catalyst exhibits best electrocatalytic activity towards methanol oxidation in acidic media,and the peak current density on this catalyst is ～2.0times higher than that on Pt/C catalyst.The better catalytic activity of Au@Pt/C results from its better resistance to toxic CO than Pt/C because the CO oxidation on Au@Pt/C is 60 mV more negative than the case on Pt/C.

参考文献

[1] Yang L;Chen JH;Zhong XX;Cui KZ;Xu Y;Kuang YF .Au@Pt nanoparticles prepared by one-phase protocol and their electrocatalytic properties for methanol oxidation[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2007(1/3):21-26.
[2] C. Jeyabharathi;P. Venkateshkumar;J. Mathiyarasu;K. L. N. Phani .Platinum-tin bimetallic nanoparticles for methanol tolerant oxygen-reduction activity[J].Electrochimica Acta,2008(2):448-454.
[3] YI Qingfeng,NIU Fengjuan.Novel nanoporous palladium catalyst for electroreduction of hydrogen peroxide[J].稀有金属（英文版）,2011(04):332-336.
[4] J.J.Baschuk;Xianguo Li .Carbon monoxide poisoning of proton exchange membrane fuel cells[J].International journal of energy research,2001(8):695-713.
[5] Kristian N;Wang X .Pt-shell-Au-core/C electrocatalyst with a controlled shell thickness and improved Pt utilization for fuel cell reactions[J].Electrochemistry communications,2008(1):12-15.
[6] Luo J;Njoki PN;Lin Y;Mott D;Wang LY;Zhong CJ .Characterization of carbon-supported AuPt nanoparticles for electrocatalytic methanol oxidation reaction[J].Langmuir: The ACS Journal of Surfaces and Colloids,2006(6):2892-2898.
[7] M.A. Montero;M.R. Gennero de Chialvo;A.C. Chialvo .Electrocatalytic activity of core-shell Au@Pt nanoparticles for the hydrogen oxidation reaction[J].International journal of hydrogen energy,2011(6):3811-3816.
[8] Methanol electro-oxidation on Ni@Pd core-shell nanoparticles supported on multi-walled carbon nanotubes in alkaline media[J].International journal of hydrogen energy,2010(8):3249.
[9] Yancey, D.F.;Carino, E.V.;Crooks, R.M. .Electrochemical synthesis and electrocatalytic properties of Au@Pt dendrimer-encapsulated nanoparticles[J].Journal of the American Chemical Society,2010(32):10988-10989.
[10] Mayfair C. Kung;Robert J. Davis;Harold H. Kung .Understanding Au-Catalyzed Low-Temperature CO Oxidation[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(32):11767-11775.
[11] Ataee-Esfahani H;Wang L;Nemoto Y;Yamauchi Y .Synthesis of bimetallic Au@Pt nanoparticles with Au core and nanostructured Pt shell toward highly active electrocatalysts[J].Chemistry of Materials,2010,22(08):6310.
[12] Bezerra C.W.B;Zhang L;Lee K.C;Liu H.S Marques A.L.B Marques E.P Wang H.J .and Zhang J.J,A review of Fe-N/C and Co-N/C catalysts for the oxygen reduction reaction[J].Electrochimica Acta,2008,53(15):4937.
[13] GAO Ge,LIU Aifang,HU Zhonghua,XU Yuanyuan,LIU Yafei.Synthesis of LiFePO4/C as cathode material by a novel optimized hydrothermal method[J].稀有金属（英文版）,2011(05):433-438.
[14] Frens G .Controlled nucleation for the regulation of the particle size in monodisperse gold suspensions[J].Nat Phys Sci,1973,241(105):20.
[15] Amado Velazquez-Palenzuela;Francesc Centellas;Jose Antonio Garrido;Conchita Arias;Rosa Maria Rodriguez;Enric Brillas;Pere-Lluis Cabot .Kinetic analysis of carbon monoxide and methanol oxidation on high performance carbon-supported Pt-Ru electrocatalyst for direct methanol fuel cells[J].Journal of Power Sources,2011(7):3503-3512.
[16] Li, X.;Liu, J.;He, W.;Huang, Q.;Yang, H. .Influence of the composition of core-shell Au-Pt nanoparticle electrocatalysts for the oxygen reduction reaction[J].Journal of Colloid and Interface Science,2010(1):132-136.
[17] Cen L;Neoh KG;Cai Q;Kang ET .Au-Pt bimetallic nanoparticles formation via viologen-mediated reduction on polymeric nanospheres[J].Journal of Colloid and Interface Science,2006(1):190-199.
[18] Gennero de Chialvo M.R;Chialvo A.C .Recent progress in the kinetics of the hydrogen electrode reaction in steady state[J].Current Topics in Electrochemistry,2006,11:1.
[19] Zhang J;Sasaki K;Sutter E;Adzic RR .Stabilization of platinum oxygen-reduction electrocatalysts using gold clusters[J].Science,2007(26):220-222.
[20] Xu Y.Y;Dong Y.N;Shi J;Xu M.L Zhang Z.F and Yang X.K .Au@Pt core-shell nanoparticles supported on multiwalled carbon nanotubes for methanol oxidation[J].Catalysis Communications,2011,13:54.
[21] S. Senthil Kumar;K. L. N. Phani .Exploration Of Unalloyed Bimetallic Au-pt/c Nanoparticles For Oxygen Reduction Reaction[J].Journal of Power Sources,2009(1):19-24.
[22] Wanjala B.N;Luo J;Loukrakpam R;Fang B Mott D Njoki P.N Engelhard M Naslund H.R Wu J.K Wang L Malis O and Zhong C.J .Nanoscale alloying,phase-segregation,and core-shell evolution of gold-platinum nanoparticles and their electrocatalytic effect on oxygen reduction reaction[J].Chemistry of Materials,2010,22:4282.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
作者相关
文章评分
  • 您的评分：
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%

版权所有©2010中国科学院金属研究所中国科技出版传媒股份有限公司

本系统由北京仁和汇智信息技术有限公司设计开发

技术支持：info@rhhz.net