Electrosynthesis and Characterization of Novel CNx-HMMT Supported Pd Nanocomposite Material for Methanol Electro-Oxidation

Faizah Altaf, Rohama Gill, Patrizia Bocchetta, Rida Batool, Muhammad Usman Hameed, Ghazanfar Abbas and Karl Jacob
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Faizah Altaf: Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi 46000, Pakistan
Rohama Gill: Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi 46000, Pakistan
Patrizia Bocchetta: Dipartimento di Ingegneria dell’Innovazione, Università del Salento, via Monteroni, 73100 Lecce, Italy
Rida Batool: Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi 46000, Pakistan
Muhammad Usman Hameed: Department of Chemistry, Women University Bagh, Azad Jammu and Kashmir 12500, Pakistan
Ghazanfar Abbas: Department of Physics, Lahore Campus, COMSATS University Islamabad, Lahore 54000, Pakistan
Karl Jacob: Georgia Institute of Technology North Avenue, School of Mechanical Engineering, Atlanta, GA 30332, USA

Energies, 2021, vol. 14, issue 12, 1-16

Abstract: In the current research work, palladium (Pd) nanoparticles were electrochemically deposited on a nitrogen doped montmorillonite (CNx-MMT) support using the underpotential deposition (UPD) method. The prepared Pd based composite electrode was studied as an electrocatalyst for methanol fuel oxidation. The catalysts and the supporting materials montmorillonite, acid activated montmorillonite, and nitrogen doped montmorillonite (MMT, HMMT and CNx-HMMT) were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) and electrochemical characterization by cyclic voltammetry (CV). The results indicated that Pd supported on CNx-HMMT possesses enhanced electrocatalytic activity and stability compared to commercial Pd/C, which was attributed to its higher electrochemical surface area (ECSA) (23.00 m 2 g −1 ). The results demonstrated the potential application of novel Pd/CNx-HMMT composite nanomaterial as electrocatalysts for methanol electrooxidation in direct methanol fuel cells (DMFCs).

Keywords: direct methanol fuel cell; nitrogen doped montmorillonite; underpotential deposition; electrocatalyst; methanol electrooxidation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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