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Vol. 33 No. 8 (2021): Vol 33 Issue 8, 2021

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One-Pot Synthesis of Pt-Pd Nanospheres Anchored in 2D-Reduced Graphene Oxide Sheets for Electrocatalytic Methanol Oxidation

https://doi.org/10.14233/ajchem.2021.23244
G. Sreenivasa Kumar
Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516005, India
N. Ramamanohar Reddy
Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516005, India
B. Vijaya Kumar Naidu
Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516005, India
S. Adinarayana Reddy
Department of Materials Science and Nanotechnology, Yogi Vemana University, Kadapa-516005, India

Corresponding Author(s) : S. Adinarayana Reddy

anreddyphd@gmail.com

Asian Journal of Chemistry, Vol. 33 No. 8 (2021): Vol 33 Issue 8, 2021

Abstract

Recently, direct methanol fuel cells (DMFCs) have been identified as suitable alternatives for efficient energy conversion and pollution-free technology. This study reports the preparation of binary platinum-palladium (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-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman microscope and Fourier transform infrared (FTIR) spectroscopy. The homogeneous anchored Pt-Pd nanospheres with an average size of 3.85 nm were deposited on to the surface of rGO sheets. Methanol oxidation studies were analyzed through a simple drop coating method using a glassy carbon electrode (GCE). The methanol oxidation performance of the Pt-Pd/rGO nanospheres coated GCE was higher than that of the rGO sheets coated with a single metal (Pt or Pd). The concordant integration of the Pt and Pd nanospheres/rGO-interface improved performance.

Keywords

Bimetallic Pt-Pd nanospheres rGO sheets Electrocatalyst Methanol electro-oxidation
Sreenivasa Kumar, G., Ramamanohar Reddy, N., Vijaya Kumar Naidu, B., & Adinarayana Reddy, S. (2021). One-Pot Synthesis of Pt-Pd Nanospheres Anchored in 2D-Reduced Graphene Oxide Sheets for Electrocatalytic Methanol Oxidation. Asian Journal of Chemistry, 33(8), 1941–1949. https://doi.org/10.14233/ajchem.2021.23244
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