Universiti Teknologi Malaysia Institutional Repository

One-pot synthesis of efficient reduced graphene oxide supported binary pt-pd alloy nanoparticles as superior electro-catalyst and its electro-catalytic performance toward methanol electro-oxidation reaction in direct methanol fuel cell

Hanifah, Mohamad Fahrul Radzi and Jaafar, Juhana and Othman, M. H. D. and Ismail, A. F. and A. Rahman, M. and Yusof, N. and Aziz, F. and Abd. Rahman, Nor’Ain (2019) One-pot synthesis of efficient reduced graphene oxide supported binary pt-pd alloy nanoparticles as superior electro-catalyst and its electro-catalytic performance toward methanol electro-oxidation reaction in direct methanol fuel cell. Journal of Alloys and Compounds, 793 . pp. 232-246. ISSN 0925-8388

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.jallcom.2019.04.114

Abstract

The development of the clean synthesis of efficient bimetallic Pt-Pd alloy nanoparticles supported reduced graphene oxide (RGO) catalyst (RGO/Pt-Pd) through a facile, rapid, surfactant–free and novel one-pot process of chemical reduction-assisted hydrothermal reaction using formic acid as reducing agent have been introduced. The structural, elemental composition analysis and surface morphology of the as-prepared catalysts were extensively characterized by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, energy dispersive x-ray spectroscopy (EDX), high resolution transmission electron microscopy (HRTEM) and field emission scanning electron microscopy (FESEM), respectively. The electrochemical properties, catalytic activity and long-term stability performance of the RGO/Pt-Pd nanocomposite catalyst were employed by cyclic voltammogram and chronoamperometry. Furthermore, owing to the synergetic effects of Pt and Pd nanoparticles, the unique structure of Pt-Pd alloy nanoparticles and enhanced electron transfer by RGO, the as-synthesized RGO/Pt-Pd nanocomposite catalyst has demonstrated the enlarged electrochemical surface area (ECSA) (ECSA = 0.91 cm2), remarkably higher electro-catalytic activity (If = 59.6 mA/cm2) and enhanced stability as compared to RGO/Pt (If = 23.32 mA/cm2, ECSA = 0.18 cm2) and RGO/Pd (If = 8.65 mA/cm2, ECSA = 0.11 cm2) nanocomposite catalysts toward methanol oxidation reaction (MOR). This superior catalytic activity of the as-prepared RGO/Pt-Pd nanocomposite catalyst with facile and simple preparation approach is promising a great opportunity for the development of direct methanol fuel cell.

Item Type:Article
Uncontrolled Keywords:catalytic activity, characterization, electrochemical
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:89286
Deposited By: Yanti Mohd Shah
Deposited On:22 Feb 2021 14:04
Last Modified:22 Feb 2021 14:04

Repository Staff Only: item control page