Cargando…

Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene

Single atom catalysts (SACs) have received a lot of attention in recent years for their high catalytic activity, selectivity, and atomic utilization rates. Two-dimensional N-doped graphene has been widely used to stabilize transition metal (TM) SACs in many reactions. However, the anchored SAC could...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhou, Qiansong, Zhang, Meng, Zhu, Beien, Gao, Yi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9332772/
https://www.ncbi.nlm.nih.gov/pubmed/35893525
http://dx.doi.org/10.3390/nano12152557
_version_ 1784758730564304896
author Zhou, Qiansong
Zhang, Meng
Zhu, Beien
Gao, Yi
author_facet Zhou, Qiansong
Zhang, Meng
Zhu, Beien
Gao, Yi
author_sort Zhou, Qiansong
collection PubMed
description Single atom catalysts (SACs) have received a lot of attention in recent years for their high catalytic activity, selectivity, and atomic utilization rates. Two-dimensional N-doped graphene has been widely used to stabilize transition metal (TM) SACs in many reactions. However, the anchored SAC could lose its activity because of the too strong metal-N interaction. Alternatively, we studied the stability and activity of dual-atom catalysts (DACs) for 24 TMs on N-doped graphene, which kept the dispersion state but had different electronic structures from SACs. Our results show that seven DACs can be formed directly compared to the SACs. The others can form stably when the number of TMs is slightly larger than the number of vacancies. We further show that some of the DACs present better catalytic activities in hydrogen evolution reaction (HER) than the corresponding SACs, which can be attributed to the optimal charge transfer that is tuned by the additional atom. After the screening, the DAC of Re is identified as the most promising catalyst for HER. This study provides useful information for designing atomically-dispersed catalysts on N−doped graphene beyond SACs.
format Online
Article
Text
id pubmed-9332772
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-93327722022-07-29 Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene Zhou, Qiansong Zhang, Meng Zhu, Beien Gao, Yi Nanomaterials (Basel) Article Single atom catalysts (SACs) have received a lot of attention in recent years for their high catalytic activity, selectivity, and atomic utilization rates. Two-dimensional N-doped graphene has been widely used to stabilize transition metal (TM) SACs in many reactions. However, the anchored SAC could lose its activity because of the too strong metal-N interaction. Alternatively, we studied the stability and activity of dual-atom catalysts (DACs) for 24 TMs on N-doped graphene, which kept the dispersion state but had different electronic structures from SACs. Our results show that seven DACs can be formed directly compared to the SACs. The others can form stably when the number of TMs is slightly larger than the number of vacancies. We further show that some of the DACs present better catalytic activities in hydrogen evolution reaction (HER) than the corresponding SACs, which can be attributed to the optimal charge transfer that is tuned by the additional atom. After the screening, the DAC of Re is identified as the most promising catalyst for HER. This study provides useful information for designing atomically-dispersed catalysts on N−doped graphene beyond SACs. MDPI 2022-07-25 /pmc/articles/PMC9332772/ /pubmed/35893525 http://dx.doi.org/10.3390/nano12152557 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhou, Qiansong
Zhang, Meng
Zhu, Beien
Gao, Yi
Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene
title Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene
title_full Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene
title_fullStr Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene
title_full_unstemmed Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene
title_short Investigation of the Stability and Hydrogen Evolution Activity of Dual-Atom Catalysts on Nitrogen-Doped Graphene
title_sort investigation of the stability and hydrogen evolution activity of dual-atom catalysts on nitrogen-doped graphene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9332772/
https://www.ncbi.nlm.nih.gov/pubmed/35893525
http://dx.doi.org/10.3390/nano12152557
work_keys_str_mv AT zhouqiansong investigationofthestabilityandhydrogenevolutionactivityofdualatomcatalystsonnitrogendopedgraphene
AT zhangmeng investigationofthestabilityandhydrogenevolutionactivityofdualatomcatalystsonnitrogendopedgraphene
AT zhubeien investigationofthestabilityandhydrogenevolutionactivityofdualatomcatalystsonnitrogendopedgraphene
AT gaoyi investigationofthestabilityandhydrogenevolutionactivityofdualatomcatalystsonnitrogendopedgraphene