Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene

Metal-supported catalyst with high activity and relatively simple preparation method is given priority to industrial production. In this work, this study reported an easily accessible synthesis strategy to prepare Mott-Schottky-type N-doped carbon encapsulated metallic Co (Co@N<sub>p+g</sub...

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Autores principales:	Yuan Huang, Haoting Yan, Chenyang Zhang, Yize Wang, Qinhong Wei, Renkun Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cobalt catalyst N-doped carbon Mott-Schottky effect catalytic hydrogenation phenylacetylene Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/0c35296493b844ac905a23334a9517a0
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spelling	oai:doaj.org-article:0c35296493b844ac905a23334a9517a02021-11-25T18:29:44ZInterfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene10.3390/nano111127762079-4991https://doaj.org/article/0c35296493b844ac905a23334a9517a02021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2776https://doaj.org/toc/2079-4991Metal-supported catalyst with high activity and relatively simple preparation method is given priority to industrial production. In this work, this study reported an easily accessible synthesis strategy to prepare Mott-Schottky-type N-doped carbon encapsulated metallic Co (Co@N<sub>p+g</sub>C) catalyst by high-temperature pyrolysis method in which carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) and dopamine were used as support and nitrogen source. The prepared Co@N<sub>p+g</sub>C presented a Mott-Schottky effect; that is, a strong electronic interaction of metallic Co and N-doped carbon shell was constructed to lead to the generation of Mott-Schottky contact. The metallic Co, due to high work function as compared to that of N-doped carbon, transferred electrons to the N-doped outer shell, forming a new contact interface. In this interface area, the positive and negative charges were redistributed, and the catalytic hydrogenation mainly occurred in the area of active charges. The Co@N<sub>p+g</sub>C catalyst showed excellent catalytic activity in the hydrogenation of phenylacetylene to styrene, and the selectivity of styrene reached 82.4%, much higher than those of reference catalysts. The reason for the promoted semi-hydrogenation of phenylacetylene was attributed to the electron transfer of metallic Co, as it was caused by N doping on carbon.Yuan HuangHaoting YanChenyang ZhangYize WangQinhong WeiRenkun ZhangMDPI AGarticlecobalt catalystN-doped carbonMott-Schottky effectcatalytic hydrogenationphenylacetyleneChemistryQD1-999ENNanomaterials, Vol 11, Iss 2776, p 2776 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cobalt catalyst N-doped carbon Mott-Schottky effect catalytic hydrogenation phenylacetylene Chemistry QD1-999
spellingShingle	cobalt catalyst N-doped carbon Mott-Schottky effect catalytic hydrogenation phenylacetylene Chemistry QD1-999 Yuan Huang Haoting Yan Chenyang Zhang Yize Wang Qinhong Wei Renkun Zhang Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene
description	Metal-supported catalyst with high activity and relatively simple preparation method is given priority to industrial production. In this work, this study reported an easily accessible synthesis strategy to prepare Mott-Schottky-type N-doped carbon encapsulated metallic Co (Co@N<sub>p+g</sub>C) catalyst by high-temperature pyrolysis method in which carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) and dopamine were used as support and nitrogen source. The prepared Co@N<sub>p+g</sub>C presented a Mott-Schottky effect; that is, a strong electronic interaction of metallic Co and N-doped carbon shell was constructed to lead to the generation of Mott-Schottky contact. The metallic Co, due to high work function as compared to that of N-doped carbon, transferred electrons to the N-doped outer shell, forming a new contact interface. In this interface area, the positive and negative charges were redistributed, and the catalytic hydrogenation mainly occurred in the area of active charges. The Co@N<sub>p+g</sub>C catalyst showed excellent catalytic activity in the hydrogenation of phenylacetylene to styrene, and the selectivity of styrene reached 82.4%, much higher than those of reference catalysts. The reason for the promoted semi-hydrogenation of phenylacetylene was attributed to the electron transfer of metallic Co, as it was caused by N doping on carbon.
format	article
author	Yuan Huang Haoting Yan Chenyang Zhang Yize Wang Qinhong Wei Renkun Zhang
author_facet	Yuan Huang Haoting Yan Chenyang Zhang Yize Wang Qinhong Wei Renkun Zhang
author_sort	Yuan Huang
title	Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene
title_short	Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene
title_full	Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene
title_fullStr	Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene
title_full_unstemmed	Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene
title_sort	interfacial electronic effects in co@n-doped carbon shells heterojunction catalyst for semi-hydrogenation of phenylacetylene
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0c35296493b844ac905a23334a9517a0
work_keys_str_mv	AT yuanhuang interfacialelectroniceffectsincondopedcarbonshellsheterojunctioncatalystforsemihydrogenationofphenylacetylene AT haotingyan interfacialelectroniceffectsincondopedcarbonshellsheterojunctioncatalystforsemihydrogenationofphenylacetylene AT chenyangzhang interfacialelectroniceffectsincondopedcarbonshellsheterojunctioncatalystforsemihydrogenationofphenylacetylene AT yizewang interfacialelectroniceffectsincondopedcarbonshellsheterojunctioncatalystforsemihydrogenationofphenylacetylene AT qinhongwei interfacialelectroniceffectsincondopedcarbonshellsheterojunctioncatalystforsemihydrogenationofphenylacetylene AT renkunzhang interfacialelectroniceffectsincondopedcarbonshellsheterojunctioncatalystforsemihydrogenationofphenylacetylene
_version_	1718411057352933376

Interfacial Electronic Effects in Co@N-Doped Carbon Shells Heterojunction Catalyst for Semi-Hydrogenation of Phenylacetylene

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