A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation

Abstract The morphology of Pt−Au bimetal nanostructures plays an important role in enhancing the catalytic capability, catalytic stability and utilization efficiency of the platinum. We designed and successfully prepared Au@Pt nanoparticles (NPs) through an economical, surfactant-free and efficient...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Changhui Tan, Yinghui Sun, Jianzhong Zheng, Dan Wang, Ziyang Li, Huajie Zeng, Jun Guo, Liqiang Jing, Lin Jiang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1158da4633514ff9908154894d02ee42
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:1158da4633514ff9908154894d02ee42
record_format	dspace
spelling	oai:doaj.org-article:1158da4633514ff9908154894d02ee422021-12-02T11:52:27ZA self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation10.1038/s41598-017-06639-52045-2322https://doaj.org/article/1158da4633514ff9908154894d02ee422017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06639-5https://doaj.org/toc/2045-2322Abstract The morphology of Pt−Au bimetal nanostructures plays an important role in enhancing the catalytic capability, catalytic stability and utilization efficiency of the platinum. We designed and successfully prepared Au@Pt nanoparticles (NPs) through an economical, surfactant-free and efficient method of seed-mediated growth. The Au@Pt NPs displayed electrochemical performances superior to those of commercial Pt/C catalysts because their agglomeration was prevented and exhibited better long-term stability with respect to methanol oxidation in acidic media by efficiently removing intermediates. Among the obtained Au@Pt NPs, Au90@Pt10 NPs exhibited the most significantly enhanced catalytic performance for the methanol oxidation reaction (MOR). Their mass and electrochemically active surface area (ECSA)-normalized current densities are approximately 3.9 and 4.6 times higher than those of commercial Pt/C catalysts, respectively. The oxidation current densities of the Au90@Pt10 NPs are approximately 1.8 times higher than those of commercial Pt/C catalysts after 4000 s of continuous measurement because the small Pt NPs grown on the surface of the Au90@Pt10 NPs were effectively stabilized by the Au metal support. This approach may be a facile method for the synthesis of self-supported bimetallic nanostructures, which is of great significance for the development of high performance electrocatalysts and sensors.Changhui TanYinghui SunJianzhong ZhengDan WangZiyang LiHuajie ZengJun GuoLiqiang JingLin JiangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Changhui Tan Yinghui Sun Jianzhong Zheng Dan Wang Ziyang Li Huajie Zeng Jun Guo Liqiang Jing Lin Jiang A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
description	Abstract The morphology of Pt−Au bimetal nanostructures plays an important role in enhancing the catalytic capability, catalytic stability and utilization efficiency of the platinum. We designed and successfully prepared Au@Pt nanoparticles (NPs) through an economical, surfactant-free and efficient method of seed-mediated growth. The Au@Pt NPs displayed electrochemical performances superior to those of commercial Pt/C catalysts because their agglomeration was prevented and exhibited better long-term stability with respect to methanol oxidation in acidic media by efficiently removing intermediates. Among the obtained Au@Pt NPs, Au90@Pt10 NPs exhibited the most significantly enhanced catalytic performance for the methanol oxidation reaction (MOR). Their mass and electrochemically active surface area (ECSA)-normalized current densities are approximately 3.9 and 4.6 times higher than those of commercial Pt/C catalysts, respectively. The oxidation current densities of the Au90@Pt10 NPs are approximately 1.8 times higher than those of commercial Pt/C catalysts after 4000 s of continuous measurement because the small Pt NPs grown on the surface of the Au90@Pt10 NPs were effectively stabilized by the Au metal support. This approach may be a facile method for the synthesis of self-supported bimetallic nanostructures, which is of great significance for the development of high performance electrocatalysts and sensors.
format	article
author	Changhui Tan Yinghui Sun Jianzhong Zheng Dan Wang Ziyang Li Huajie Zeng Jun Guo Liqiang Jing Lin Jiang
author_facet	Changhui Tan Yinghui Sun Jianzhong Zheng Dan Wang Ziyang Li Huajie Zeng Jun Guo Liqiang Jing Lin Jiang
author_sort	Changhui Tan
title	A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
title_short	A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
title_full	A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
title_fullStr	A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
title_full_unstemmed	A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
title_sort	self-supporting bimetallic au@pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1158da4633514ff9908154894d02ee42
work_keys_str_mv	AT changhuitan aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT yinghuisun aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT jianzhongzheng aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT danwang aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT ziyangli aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT huajiezeng aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT junguo aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT liqiangjing aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT linjiang aselfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT changhuitan selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT yinghuisun selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT jianzhongzheng selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT danwang selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT ziyangli selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT huajiezeng selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT junguo selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT liqiangjing selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation AT linjiang selfsupportingbimetallicauptcoreshellnanoparticleelectrocatalystforthesynergisticenhancementofmethanoloxidation
_version_	1718395030901620736

A self-supporting bimetallic Au@Pt core-shell nanoparticle electrocatalyst for the synergistic enhancement of methanol oxidation

Ejemplares similares