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One‐Step Sonochemical Synthesis of Reduced Graphene Oxide/Pt/Sn Hybrid Materials and Their Electrochemical Properties
Author(s) -
Anandan S.,
Manivel A.,
Ashokkumar M.
Publication year - 2012
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201200048
Subject(s) - bimetallic strip , x ray photoelectron spectroscopy , graphene , materials science , selected area diffraction , oxide , transmission electron microscopy , chemical engineering , nanoparticle , electrochemistry , high resolution transmission electron microscopy , catalysis , scanning electron microscope , nanotechnology , nuclear chemistry , metal , composite material , electrode , chemistry , metallurgy , organic chemistry , engineering
Low frequency ultrasound (20 kHz) was used for the reduction of graphene oxide (GO), Pt and Sn precursors with simultaneous loading of Pt and Sn monometallic and Pt–Sn bimetallic nanoparticles on the surface of reduced GO (rGO). The physicochemical characterizations of the catalysts were carried out using transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), energy dispersive X‐ray spectroscopy (EDX), and selected area electron diffraction (SAED) techniques. The reduced monometallic and bimetallic nanoparticles were spherical in shape with diameters around 2–6 nm, uniformly embedded on rGO sheets of few layers thickness. The electrocatalytic activities of the synthesized materials were evaluated by cyclic voltammetric studies.