Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction

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 th...

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Autores principales:	Mogwasha D. Makhafola, Kwena D. Modibane, Kabelo E. Ramohlola, Thabiso C. Maponya, Mpitloane J. Hato, Katlego Makgopa, Emmanuel I. Iwuoha
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/df024e1e0f6644048a0a046d0a9ac77e
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spelling	oai:doaj.org-article:df024e1e0f6644048a0a046d0a9ac77e2021-12-02T16:34:54ZPalladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction10.1038/s41598-021-96536-92045-2322https://doaj.org/article/df024e1e0f6644048a0a046d0a9ac77e2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96536-9https://doaj.org/toc/2045-2322Abstract 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.Mogwasha D. MakhafolaKwena D. ModibaneKabelo E. RamohlolaThabiso C. MaponyaMpitloane J. HatoKatlego MakgopaEmmanuel I. IwuohaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mogwasha D. Makhafola Kwena D. Modibane Kabelo E. Ramohlola Thabiso C. Maponya Mpitloane J. Hato Katlego Makgopa Emmanuel I. Iwuoha Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
description	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.
format	article
author	Mogwasha D. Makhafola Kwena D. Modibane Kabelo E. Ramohlola Thabiso C. Maponya Mpitloane J. Hato Katlego Makgopa Emmanuel I. Iwuoha
author_facet	Mogwasha D. Makhafola Kwena D. Modibane Kabelo E. Ramohlola Thabiso C. Maponya Mpitloane J. Hato Katlego Makgopa Emmanuel I. Iwuoha
author_sort	Mogwasha D. Makhafola
title	Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
title_short	Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
title_full	Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
title_fullStr	Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
title_full_unstemmed	Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
title_sort	palladinized graphene oxide-mof induced coupling of volmer and heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/df024e1e0f6644048a0a046d0a9ac77e
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Palladinized graphene oxide-MOF induced coupling of Volmer and Heyrovsky mechanisms, for the amplification of the electrocatalytic efficiency of hydrogen evolution reaction

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