Open AccessOne-Pot Synthesis of Pt-Pd Nanospheres Anchored in 2D-Reduced Graphene Oxide Sheets for Electrocatalytic Methanol Oxidation
Author(s) -
Godlaveeti Sreenivasa Kumar,
N. Ramamanohar Reddy,
B. Vijaya Kumar Naidu,
S. Adinarayana Reddy
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23244
Subject(s) - graphene , oxide , scanning electron microscope , fourier transform infrared spectroscopy , methanol , raman spectroscopy , chemical engineering , chemistry , transmission electron microscopy , inorganic chemistry , materials science , nanotechnology , organic chemistry , composite material , physics , optics , engineering
Recently, direct methanol fuel cells (DMFCs) have been identified as suitable alternatives for efficientenergy conversion and pollution-free technology. This study reports the preparation of binary platinumpalladium(Pt-Pd) nanospheres anchored on reduced graphene oxide (rGO) sheets (Pt-Pd/rGO sheets)using a wet chemical technique. The structural and morphological features were analyzed using X-raypowder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy(TEM), Raman microscope and Fourier transform infrared (FTIR) spectroscopy. The homogeneousanchored Pt-Pd nanospheres with an average size of 3.85 nm were deposited on to the surface of rGOsheets. Methanol oxidation studies were analyzed through a simple drop coating method using aglassy carbon electrode (GCE). The methanol oxidation performance of the Pt-Pd/rGO nanospherescoated GCE was higher than that of the rGO sheets coated with a single metal (Pt or Pd). The concordantintegration of the Pt and Pd nanospheres/rGO-interface improved performance.