Graphene supported bimetallic G-Co-Pt nanohybrid catalyst for enhanced and cost effective hydrogen generation

Saha, S. and Basak, V. and Dasgupta, A. and Ganguly, S. and Banerjee, D. and Kargupta, K. (2014) Graphene supported bimetallic G-Co-Pt nanohybrid catalyst for enhanced and cost effective hydrogen generation. International Journal of Hydrogen Energy, 39 (22). pp. 11566-11577.

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A highly active and stable bimetallic nano-hybrid catalyst Graphene-Cobalt-Platinum (G-Co-Pt) is proposed for the enhanced and cost effective generation of hydrogen from Sodium Borohydride. Three different nano-hybrid catalysts namely Graphene-Cobalt (G-Co), Graphene-Platinum (G-Pt) and Graphene-Cobalt-Platinum (G-Co-Pt) are synthesized, characterized using XRD, FTIR, SEM, HRTEM, EDAX and Cyclic voltammetry (CV) analysis and tested for hydrogen generation. The activity and stability of the catalysts are analyzed by estimating the turnover frequency (TOF), the electrochemically active surface area (ECSA), the percentage decay of current density over ten cycles of CV and the decay in the rate of hydrogen generation with the age of catalyst. Among the three catalysts G-Co-Pt exhibits the highest catalytic activity (TOF = 107 min-1, ECSA = 75.32 m2/gm) and stability. The evaluated value of activation energy of the catalytic hydrolysis using G-Co-Pt is 16 ± 2 kJ mol-1. Copyright © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Item Type: Article
Impact Factor: cited By 38
Uncontrolled Keywords: Activation energy; Catalyst activity; Cobalt metallography; Cost effectiveness; Cyclic voltammetry; Graphene; Hydrogen production; Nanocatalysts; Nanostructured materials; Platinum; Sodium Borohydride, Bimetallic catalysts; Catalytic hydrolysis; Cobalt platinums; Cost effective; Electrochemically active surface areas; Hydrogen generations; Nano hybrids; Turnover frequency, Catalyst supports
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 25 Mar 2022 09:03
Last Modified: 25 Mar 2022 09:03

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