Hierarchical Nanoporous Gold-Platinum with Heterogeneous Interfaces for Methanol Electrooxidation

The electrocatalysts utilized as the prospective electrodes in fuel cells and high efficient energy conversion devices require both the interconnected channels for efficient electrolyte transportation and the superior catalytic activity with long service life. In this work, nanoporous gold with the rigid skeletons in three dimensions is partially decorated by porous platinum shell containing nanoscale interstitials, aiming to create the heterogeneous gold-platinum interfaces and facilitate the electrolyte transportation as well. In comparison with no catalytic activity of bare nanoporous gold, the catalytic activity of hierarchical nanoporous gold-platinum towards electrochemical oxidation of methanol increases with the loading level of platinum shells, resulting in the highest electrochemical area of 70.4 m2·g−1 after the normalization by the mass of platinum. Heterogeneous gold-platinum interfaces affect the tolerance of the absorbed intermediate species because of the oxidization by the oxygenated species absorbed on the gold surface and the enhanced ion transportation within the porous platinum shell.

[1]  A. Karma,et al.  Evolution of nanoporosity in dealloying , 2001, Nature.

[2]  Chang Ming Li,et al.  Self-assembled phosphomolybdic acid–polyaniline–graphene composite-supported efficient catalyst towards methanol oxidation , 2013 .

[3]  Ming-Wei Chen,et al.  Synthesis and optical properties of three-dimensional porous core-shell nanoarchitectures. , 2008, Langmuir : the ACS journal of surfaces and colloids.

[4]  S. Alia,et al.  Porous Platinum Nanotubes for Oxygen Reduction and Methanol Oxidation Reactions , 2010 .

[5]  J. Erlebacher,et al.  Metallic mesoporous nanocomposites for electrocatalysis. , 2004, Journal of the American Chemical Society.

[6]  Jörg Kärger,et al.  Mass transfer in mesoporous materials: the benefit of microscopic diffusion measurement. , 2013, Chemical Society reviews.

[7]  P. Rodríguez,et al.  The promoting effect of adsorbed carbon monoxide on the oxidation of alcohols on a gold catalyst. , 2012, Nature chemistry.

[8]  R. Zengerle,et al.  Strategies for the Fabrication of Porous Platinum Electrodes , 2011, Advanced materials.

[9]  Edward Sacher,et al.  Template‐ and Surfactant‐free Room Temperature Synthesis of Self‐Assembled 3D Pt Nanoflowers from Single‐Crystal Nanowires , 2008 .

[10]  C. Chen,et al.  Facile and Green Synthesis of Palladium Nanoparticles-Graphene-Carbon Nanotube Material with High Catalytic Activity , 2013, Scientific Reports.

[11]  Changpeng Liu,et al.  Pt/C catalysts with narrow size distribution prepared by colloidal-precipitation method for methanol electrooxidation , 2012 .

[12]  Chang Ming Li,et al.  Highly dispersed MoO(x) on carbon nanotube as support for high performance Pt catalyst towards methanol oxidation. , 2011, Chemical communications.

[13]  Christopher J. Tassone,et al.  FROM SYNTHESIS TO PROPERTIES AND APPLICATIONS , 2013 .

[14]  Hee-Young Park,et al.  Electrocatalytic activity of carbon-supported Pt–Au nanoparticles for methanol electro-oxidation , 2007 .

[15]  Y. Yamauchi,et al.  Synthesis of Bimetallic Au@Pt Nanoparticles with Au Core and Nanostructured Pt Shell toward Highly Active Electrocatalysts , 2010 .

[16]  Y. Tong,et al.  A coverage-dependent study of pt spontaneously deposited onto Au and Ru surfaces: direct experimental evidence of the ensemble effect for methanol electro-oxidation on Pt. , 2005, The journal of physical chemistry. B.

[17]  N. Alonso‐Vante,et al.  Structural and electrochemical studies of Au-Pt nanoalloys. , 2009, Physical chemistry chemical physics : PCCP.

[18]  Dongju Zhang,et al.  Theoretical Study of Methanol Oxidation on the PtAu(111) Bimetallic Surface: CO Pathway vs Non-CO Pathway , 2012 .

[19]  Zhaolin Liu,et al.  Carbon-Supported Pt and PtRu Nanoparticles as Catalysts for a Direct Methanol Fuel Cell , 2004 .

[20]  Liang Wang,et al.  Electrochemical synthesis of mesoporous Pt-Au binary alloys with tunable compositions for enhancement of electrochemical performance. , 2012, Journal of the American Chemical Society.

[21]  M. Nishijima,et al.  Highly Stable Pt-Au@Ru/C Catalyst Nanoparticles for Methanol Electro-oxidation , 2013 .

[22]  B. Su,et al.  Hierarchically Structured Porous Materials for Energy Conversion and Storage , 2012 .

[23]  J. Goodenough,et al.  Methanol oxidation in acid on ordered NiTi , 1992 .

[24]  S. Wasmus,et al.  Methanol oxidation and direct methanol fuel cells: a selective review 1 In honour of Professor W. Vi , 1999 .

[25]  Shuhui Sun,et al.  Controlled Growth of Pt Nanowires on Carbon Nanospheres and Their Enhanced Performance as Electrocatalysts in PEM Fuel Cells , 2008 .

[26]  藤田 武志.  Three-dimensional morphology of nanoporous gold , 2008 .

[27]  S. Kim,et al.  Towards Engineering Nanoporous Platinum Thin Films for Highly Efficient Catalytic Applications , 2011 .

[28]  K. Friedrich,et al.  Investigation of Pt particles on gold substrates by IR spectroscopy particle structure and catalytic activity , 1998 .

[29]  J. Erlebacher,et al.  Epitaxial casting of nanotubular mesoporous platinum. , 2005, Angewandte Chemie.

[30]  K. Sasaki,et al.  Stabilization of Platinum Oxygen-Reduction Electrocatalysts Using Gold Clusters , 2007, Science.

[31]  R. Zengerle,et al.  Fabrication of highly porous platinum electrodes for micro-scale applications by pulsed electrodeposition and dealloying , 2013 .

[32]  Chang Ming Li,et al.  Nanoporous metals: fabrication strategies and advanced electrochemical applications in catalysis, sensing and energy systems. , 2012, Chemical Society reviews.

[33]  J. Shui,et al.  Evolution of Nanoporous Pt–Fe Alloy Nanowires by Dealloying and their Catalytic Property for Oxygen Reduction Reaction , 2011 .

[34]  Y. Yamauchi,et al.  Mesoporous platinum with giant mesocages templated from lyotropic liquid crystals consisting of diblock copolymers. , 2008, Angewandte Chemie.

[35]  Donald J. Reichard,et al.  A SELECTIVE REVIEW , 2007 .

[36]  Zhong-Qun Tian,et al.  Epitaxial growth of heterogeneous metal nanocrystals: from gold nano-octahedra to palladium and silver nanocubes. , 2008, Journal of the American Chemical Society.

[37]  U. Stimming,et al.  Influence of particle agglomeration on the catalytic activity of carbon-supported Pt nanoparticles in CO monolayer oxidation , 2005 .

[38]  Xingbo Ge,et al.  Platinum-Decorated Nanoporous Gold Leaf for Methanol Electrooxidation , 2007 .

[39]  Caixia Xu,et al.  Nanotubular Mesoporous Bimetallic Nanostructures with Enhanced Electrocatalytic Performance , 2009 .

[40]  Qiang Xu,et al.  Recent progress in synergistic catalysis over heterometallic nanoparticles , 2011 .

[41]  Liquan Chen,et al.  Nanostructured ceria-based materials: synthesis, properties, and applications , 2012 .

[42]  Y. Yamauchi,et al.  Strategic Synthesis of Trimetallic Au@Pd@Pt Core−Shell Nanoparticles from Poly(vinylpyrrolidone)-Based Aqueous Solution toward Highly Active Electrocatalysts , 2011 .

[43]  Luyang Chen,et al.  A Three‐Dimensional Gold‐Decorated Nanoporous Copper Core–Shell Composite for Electrocatalysis and Nonenzymatic Biosensing , 2010 .

[44]  V. Valtchev,et al.  Tailored Crystalline Microporous Materials by Post‐Synthesis Modification , 2013 .

[45]  Zhonghua Zhang,et al.  Nanoporous bimetallic Pt-Au alloy nanocomposites with superior catalytic activity towards electro-oxidation of methanol and formic acid. , 2011, Nanoscale.

[46]  L. Zepeda-Ruiz,et al.  Surface-chemistry-driven actuation in nanoporous gold. , 2009, Nature materials.

[47]  Qiang Xu,et al.  Synergistic Catalysis over Bimetallic Alloy Nanoparticles , 2013 .

[48]  Erik C. Dreaden,et al.  Detecting and destroying cancer cells in more than one way with noble metals and different confinement properties on the nanoscale. , 2012, Accounts of chemical research.