Abstract

In this study, a nanocomposite of palladium supported graphene oxide (GO)/metal–organic framework (MOF) was prepared using electroless deposition of Pd on GO followed by impregnation method of Pd@GO and MOF. The prepared materials were characterized with various analytical techniques and their applications as HER electrocatalysts were evaluated using cyclic voltammetry (CV), Tafel plots, and turn over frequencies (TOFs). The HER results showed a radical increment of H2 production in the nanocomposite through the Volmer reaction together with Heyrovsky or Tafel mechanism. This disclosed that the addition of Pd@GO/MOF in the electrolytic system possessed better catalytic characteristics with enhanced current density which may open a new way for hydrogen production and storage via HER.

Details

Title
Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
Author
Makhafola, Mogwasha D 1 ; Modibane, Kwena D 1 ; Ramohlola, Kabelo E 1 ; Maponya, Thabiso C 1 ; Hato, Mpitloane J 1 ; Katlego, Makgopa 2 ; Iwuoha, Emmanuel I 3 

 University of Limpopo (Turfloop), Nanotechnology Research Lab, Department of Chemistry, School of Physical and Mineral Sciences, Sovenga, South Africa (GRID:grid.411732.2) (ISNI:0000 0001 2105 2799) 
 Tshwane University of Technology (Acardia Campus), Department of Chemistry, Faculty of Science, Pretoria, South Africa (GRID:grid.412810.e) (ISNI:0000 0001 0109 1328) 
 University of the Western Cape, SensorLab, Chemistry Department, Bellville, Cape Town, South Africa (GRID:grid.8974.2) (ISNI:0000 0001 2156 8226) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2564693020
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.