Characterization Microstructural and Electrochemical of AgPd Alloy Bimetallic Nanoparticles

Bimetallic nanoparticles are of special interest for their potential applications to fuel cells, among the bimetallic systems, AuPd bimetallic nanoparticles have received great interest as they can be widely used as effective catalysts for various electrochemical reactions. Monodisperse AgPd alloy nanoparticles were synthesized by polyol method using silver nitrate and potassium tetrachloropalladate(II) in ethylene glycol as the reducing agent at 160 °C. Structural, compositional and electrochemical characterizations of synthesized bimetallic nanoparticles were investigated. High-angle annular dark field scanning/transmission electron microscopy (HAADF-STEM) images and parallel beam X-ray diffraction (XRD) of the bimetallic nanoparticles were obtained. XRD and the contrast of the HAADF-STEM images show that the bimetallic nanoparticles have an alloy structure. Cyclic voltammetry was carried out in order to confirm the electrochemical responses of the AgPd/C electrocatalysts for methanol oxidation. Thanks to the narrow size distribution of the AgPd alloy bimetallic nanoparticles (9.15 nm) the supported AgPd/C electrocatalysts have high catalytic activity toward methanol electro-oxidation.

[1]  M. Meyyappan,et al.  A general seed-mediated approach to the synthesis of AgM (M = Au, Pt, and Pd) core–shell nanoplates and their SERS properties , 2017 .

[2]  Jiale Huang,et al.  Monodisperse AgPd alloy nanoparticles as a highly active catalyst towards the methanolysis of ammonia borane for hydrogen generation , 2016 .

[3]  E. Grabowska,et al.  Noble metal-based bimetallic nanoparticles: the effect of the structure on the optical, catalytic and photocatalytic properties. , 2016, Advances in colloid and interface science.

[4]  A. Akbarzadeh,et al.  Bimetallic nanoparticles: Preparation, properties, and biomedical applications , 2016, Artificial cells, nanomedicine, and biotechnology.

[5]  Shengli Chen,et al.  Highly efficient hydrogen generation from formic acid-sodium formate over monodisperse AgPd nanoparticles at room temperature , 2015 .

[6]  Lili Lin,et al.  Construction of Pd-based nanocatalysts for fuel cells: opportunities and challenges , 2014 .

[7]  E. Espuche,et al.  Hybrid films of polyetherimide containing in situ grown Ag, Pd, and AgPd alloy nanoparticles: Synthesis route, morphology, and gas transport properties , 2014 .

[8]  B. Satpati,et al.  Characterization of bimetallic core–shell nanorings synthesized via ascorbic acid-controlled galvanic displacement followed by epitaxial growth , 2014 .

[9]  Weiqi Wang,et al.  Comparison study of electrocatalytic activity of reduced graphene oxide supported Pt–Cu bimetallic or Pt nanoparticles for the electrooxidation of methanol and ethanol , 2013 .

[10]  P. Divya,et al.  Platinum nanoparticles supported on a bi-metal oxide grown carbon nanostructure as an ethanol electro-oxidation electrocatalyst , 2013 .

[11]  A. Singh,et al.  Synergistic Catalysis over Bimetallic Alloy Nanoparticles , 2013 .

[12]  Baljit Singh,et al.  Exceptional Pt nanoparticle decoration of functionalised carbon nanofibers: a strategy to improve the utility of Pt and support material for direct methanol fuel cell applications , 2013 .

[13]  Shigang Sun,et al.  Origin of the current peak of negative scan in the cyclic voltammetry of methanol electro-oxidation on Pt-based electrocatalysts: a revisit to the current ratio criterion , 2012 .

[14]  Hyuck-Mo Lee,et al.  Temperature and composition dependent structural evolution of AgPd bimetallic nanoparticle: phase diagram of (AgPd)151 nanoparticle. , 2011, Journal of nanoscience and nanotechnology.

[15]  岩本 正和,et al.  Applied Catalysis B: Environmental , 2020 .

[16]  M. José-Yacamán,et al.  Structural characterization of Pt–Pd core–shell nanoparticles by Cs-corrected STEM , 2012, Journal of Nanoparticle Research.

[17]  P. Nellist,et al.  The principles and interpretation of annular dark-field Z-contrast imaging , 2000 .

[18]  Naoki Toshima,et al.  Bimetallic nanoparticles—novel materials for chemical and physical applications , 1998 .