Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting

Abstract Growing environmental problems along with the galloping rate of population growth have raised an unprecedented challenge to look for an ever-lasting alternative source of energy for fossil fuels. The eternal quest for sustainable energy production strategies has culminated in the electrocat...

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Autores principales:	Ebrahim Sadeghi, Naeimeh Sadat Peighambardoust, Masoumeh Khatamian, Ugur Unal, Umut Aydemir
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fdff994bb6cd4a50adf0feabf76191ce
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spelling	oai:doaj.org-article:fdff994bb6cd4a50adf0feabf76191ce2021-12-02T12:14:56ZMetal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting10.1038/s41598-021-83066-72045-2322https://doaj.org/article/fdff994bb6cd4a50adf0feabf76191ce2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83066-7https://doaj.org/toc/2045-2322Abstract Growing environmental problems along with the galloping rate of population growth have raised an unprecedented challenge to look for an ever-lasting alternative source of energy for fossil fuels. The eternal quest for sustainable energy production strategies has culminated in the electrocatalytic water splitting process integrated with renewable energy resources. The successful accomplishment of this process is thoroughly subject to competent, earth-abundant, and low-cost electrocatalysts to drive the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), preferably, in the same electrolyte. The present contribution has been dedicated to studying the synthesis, characterization, and electrochemical properties of newfangled electrocatalysts with the formal composition of Mg1−x TM x B2 (x = 0.025, 0.05, and 0.1; TM (transition metal) = Fe and Co) primarily in HER as well as OER under 1 M KOH medium. The electrochemical tests revealed that among all the metal-doped MgB2 catalysts, Mg0.95Co0.05B2 has the best HER performance showing an overpotential of 470 mV at − 10 mA cm−2 and a Tafel slope of 80 mV dec−1 on account of its high purity and fast electron transport. Further investigation shed some light on the fact that Fe concentration and overpotential for HER have adverse relation meaning that the highest amount of Fe doping (x = 0.1) displayed the lowest overpotential. This contribution introduces not only highly competent electrocatalysts composed of low-cost precursors for the water-splitting process but also a facile scalable method for the assembly of highly porous electrodes paving the way for further stunning developments in the field.Ebrahim SadeghiNaeimeh Sadat PeighambardoustMasoumeh KhatamianUgur UnalUmut AydemirNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ebrahim Sadeghi Naeimeh Sadat Peighambardoust Masoumeh Khatamian Ugur Unal Umut Aydemir Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting
description	Abstract Growing environmental problems along with the galloping rate of population growth have raised an unprecedented challenge to look for an ever-lasting alternative source of energy for fossil fuels. The eternal quest for sustainable energy production strategies has culminated in the electrocatalytic water splitting process integrated with renewable energy resources. The successful accomplishment of this process is thoroughly subject to competent, earth-abundant, and low-cost electrocatalysts to drive the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), preferably, in the same electrolyte. The present contribution has been dedicated to studying the synthesis, characterization, and electrochemical properties of newfangled electrocatalysts with the formal composition of Mg1−x TM x B2 (x = 0.025, 0.05, and 0.1; TM (transition metal) = Fe and Co) primarily in HER as well as OER under 1 M KOH medium. The electrochemical tests revealed that among all the metal-doped MgB2 catalysts, Mg0.95Co0.05B2 has the best HER performance showing an overpotential of 470 mV at − 10 mA cm−2 and a Tafel slope of 80 mV dec−1 on account of its high purity and fast electron transport. Further investigation shed some light on the fact that Fe concentration and overpotential for HER have adverse relation meaning that the highest amount of Fe doping (x = 0.1) displayed the lowest overpotential. This contribution introduces not only highly competent electrocatalysts composed of low-cost precursors for the water-splitting process but also a facile scalable method for the assembly of highly porous electrodes paving the way for further stunning developments in the field.
format	article
author	Ebrahim Sadeghi Naeimeh Sadat Peighambardoust Masoumeh Khatamian Ugur Unal Umut Aydemir
author_facet	Ebrahim Sadeghi Naeimeh Sadat Peighambardoust Masoumeh Khatamian Ugur Unal Umut Aydemir
author_sort	Ebrahim Sadeghi
title	Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting
title_short	Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting
title_full	Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting
title_fullStr	Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting
title_full_unstemmed	Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting
title_sort	metal doped layered mgb2 nanoparticles as novel electrocatalysts for water splitting
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fdff994bb6cd4a50adf0feabf76191ce
work_keys_str_mv	AT ebrahimsadeghi metaldopedlayeredmgb2nanoparticlesasnovelelectrocatalystsforwatersplitting AT naeimehsadatpeighambardoust metaldopedlayeredmgb2nanoparticlesasnovelelectrocatalystsforwatersplitting AT masoumehkhatamian metaldopedlayeredmgb2nanoparticlesasnovelelectrocatalystsforwatersplitting AT ugurunal metaldopedlayeredmgb2nanoparticlesasnovelelectrocatalystsforwatersplitting AT umutaydemir metaldopedlayeredmgb2nanoparticlesasnovelelectrocatalystsforwatersplitting
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Metal doped layered MgB2 nanoparticles as novel electrocatalysts for water splitting

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