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Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium

Development of highly efficient oxygen evolution reaction (OER) electrocatalysts is a critical challenge in the cost-effective generation of clean fuels. Here, a metal-free tyramine functionalized graphene oxide (T-GO) electrocatalyst is proposed to use in alkaline electrolytes for enhanced OER. Mor...

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Autores principales: Sapner, Vijay S., Mulik, Balaji B., Digraskar, Renuka V., Narwade, Shankar S., Sathe, Bhaskar R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9060968/
https://www.ncbi.nlm.nih.gov/pubmed/35518457
http://dx.doi.org/10.1039/c8ra10286d
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author Sapner, Vijay S.
Mulik, Balaji B.
Digraskar, Renuka V.
Narwade, Shankar S.
Sathe, Bhaskar R.
author_facet Sapner, Vijay S.
Mulik, Balaji B.
Digraskar, Renuka V.
Narwade, Shankar S.
Sathe, Bhaskar R.
author_sort Sapner, Vijay S.
collection PubMed
description Development of highly efficient oxygen evolution reaction (OER) electrocatalysts is a critical challenge in the cost-effective generation of clean fuels. Here, a metal-free tyramine functionalized graphene oxide (T-GO) electrocatalyst is proposed to use in alkaline electrolytes for enhanced OER. Moreover, the T-GO and GO nanomaterials are well characterized by SEM, XRD, FTIR, XPS and Raman spectroscopy. T-GO exhibits an electrocatalytic OER with a current density of 2 mA cm(−2) at a low onset potential of ∼1.39 V and a small Tafel slope of about 69 mV dec(−1) and GO exhibits an onset potential of 1.51 V and Tafel slope of about 92 mV dec(−1). Additionally, the current stability and RRDE based diffusion controlled response of the T-GO electrocatalyst are outstanding compared to GO. This study establishes metal free T-GO as an efficient electrocatalyst for the OER and used for cathodic production of hydrogen as a counter reaction in the field of water splitting.
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spelling pubmed-90609682022-05-04 Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium Sapner, Vijay S. Mulik, Balaji B. Digraskar, Renuka V. Narwade, Shankar S. Sathe, Bhaskar R. RSC Adv Chemistry Development of highly efficient oxygen evolution reaction (OER) electrocatalysts is a critical challenge in the cost-effective generation of clean fuels. Here, a metal-free tyramine functionalized graphene oxide (T-GO) electrocatalyst is proposed to use in alkaline electrolytes for enhanced OER. Moreover, the T-GO and GO nanomaterials are well characterized by SEM, XRD, FTIR, XPS and Raman spectroscopy. T-GO exhibits an electrocatalytic OER with a current density of 2 mA cm(−2) at a low onset potential of ∼1.39 V and a small Tafel slope of about 69 mV dec(−1) and GO exhibits an onset potential of 1.51 V and Tafel slope of about 92 mV dec(−1). Additionally, the current stability and RRDE based diffusion controlled response of the T-GO electrocatalyst are outstanding compared to GO. This study establishes metal free T-GO as an efficient electrocatalyst for the OER and used for cathodic production of hydrogen as a counter reaction in the field of water splitting. The Royal Society of Chemistry 2019-02-22 /pmc/articles/PMC9060968/ /pubmed/35518457 http://dx.doi.org/10.1039/c8ra10286d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Sapner, Vijay S.
Mulik, Balaji B.
Digraskar, Renuka V.
Narwade, Shankar S.
Sathe, Bhaskar R.
Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
title Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
title_full Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
title_fullStr Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
title_full_unstemmed Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
title_short Enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
title_sort enhanced oxygen evolution reaction on amine functionalized graphene oxide in alkaline medium
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9060968/
https://www.ncbi.nlm.nih.gov/pubmed/35518457
http://dx.doi.org/10.1039/c8ra10286d
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