Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction

Abstract Nickel–iron-layered double hydroxide (NiFe LDH) platelets with high morphological regularity and submicrometre lateral dimensions were synthesized using a homogeneous precipitation technique for highly efficient catalysis of the oxygen evolution reaction (OER). Considering edge sites are th...

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Autores principales:	Daire Tyndall, Sonia Jaskaniec, Brian Shortall, Ahin Roy, Lee Gannon, Katie O’Neill, Michelle P. Browne, João Coelho, Cormac McGuinness, Georg S. Duesberg, Valeria Nicolosi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/a069ab9f98624155a6b69cfb5aea748d
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spelling	oai:doaj.org-article:a069ab9f98624155a6b69cfb5aea748d2021-12-02T18:50:48ZPostsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction10.1038/s41699-021-00249-62397-7132https://doaj.org/article/a069ab9f98624155a6b69cfb5aea748d2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41699-021-00249-6https://doaj.org/toc/2397-7132Abstract Nickel–iron-layered double hydroxide (NiFe LDH) platelets with high morphological regularity and submicrometre lateral dimensions were synthesized using a homogeneous precipitation technique for highly efficient catalysis of the oxygen evolution reaction (OER). Considering edge sites are the point of activity, efforts were made to control platelet size within the synthesized dispersions. The goal is to controllably isolate and characterize size-reduced NiFe LDH particles. Synthetic approaches for size control of NiFe LDH platelets have not been transferable based on published work with other LDH materials and for that reason, we instead use postsynthetic treatment techniques to improve edge-site density. In the end, size-reduced NiFe LDH/single-wall carbon nanotube (SWCNT) composites allowed to further reduce the OER overpotential to 237 ± 7 mV (<L> = 0.16 ± 0.01 μm, 20 wt% SWCNT), which is one of the best values reported to date. This approach as well improved the long-term activity of the catalyst in operating conditions.Daire TyndallSonia JaskaniecBrian ShortallAhin RoyLee GannonKatie O’NeillMichelle P. BrowneJoão CoelhoCormac McGuinnessGeorg S. DuesbergValeria NicolosiNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENnpj 2D Materials and Applications, Vol 5, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999 Daire Tyndall Sonia Jaskaniec Brian Shortall Ahin Roy Lee Gannon Katie O’Neill Michelle P. Browne João Coelho Cormac McGuinness Georg S. Duesberg Valeria Nicolosi Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
description	Abstract Nickel–iron-layered double hydroxide (NiFe LDH) platelets with high morphological regularity and submicrometre lateral dimensions were synthesized using a homogeneous precipitation technique for highly efficient catalysis of the oxygen evolution reaction (OER). Considering edge sites are the point of activity, efforts were made to control platelet size within the synthesized dispersions. The goal is to controllably isolate and characterize size-reduced NiFe LDH particles. Synthetic approaches for size control of NiFe LDH platelets have not been transferable based on published work with other LDH materials and for that reason, we instead use postsynthetic treatment techniques to improve edge-site density. In the end, size-reduced NiFe LDH/single-wall carbon nanotube (SWCNT) composites allowed to further reduce the OER overpotential to 237 ± 7 mV (<L> = 0.16 ± 0.01 μm, 20 wt% SWCNT), which is one of the best values reported to date. This approach as well improved the long-term activity of the catalyst in operating conditions.
format	article
author	Daire Tyndall Sonia Jaskaniec Brian Shortall Ahin Roy Lee Gannon Katie O’Neill Michelle P. Browne João Coelho Cormac McGuinness Georg S. Duesberg Valeria Nicolosi
author_facet	Daire Tyndall Sonia Jaskaniec Brian Shortall Ahin Roy Lee Gannon Katie O’Neill Michelle P. Browne João Coelho Cormac McGuinness Georg S. Duesberg Valeria Nicolosi
author_sort	Daire Tyndall
title	Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
title_short	Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
title_full	Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
title_fullStr	Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
title_full_unstemmed	Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
title_sort	postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a069ab9f98624155a6b69cfb5aea748d
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Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction

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