Ethyne Reducing Metal-Organic Frameworks to Control Fabrications of Core/shell Nanoparticles as Catalysts

Chenghua Zhang, Xiaoxue Guo, Qingchun Yuan, Rongle Zhang, Qiang Change, Ke Li, Bo Xiao, Suyao Liu, Caiping Ma, Xi Liu, Yiqun Xu, Xiadong Wen, Yong Yang, Yongwang Li

Research output: Contribution to journalArticle

Abstract

An approach using cobalt metal-organic frameworks (Co-MOF) as precursors is established for the fabrication of cobalt nanoparticles in porous carbon shells (core/shell Co@C). Chemical vapor deposition of ethyne is used for controlling the reduction of cobalt nanoclusters in the MOF and the spontaneous formation of the porous carbon shells. The metallic cobalt cores formed are up to 4 - 6 nm with the crystal phase varying between hexagonally-close-packed (hcp) and face-centre-packed (fcc). The porous carbon shells change from amorphous to graphene with the ethyne deposition temperature increasing from 400 to 600 oC. The core/shell Co@C nanoparticles exhibit high catalytic activity in selectively converting syngas (CTY: 254.1 - 312.1 μmolCO·gCo-1·s-1) into hydrocarbons (4.0 - 5.2 gHC·g-cat-1·h-1) at 260 oC. As well as the crystal size and phase, the coordination numbers of the cobalt to oxygen and to other cobalt atoms on the surface of the cobalt nanoparticles, and the permeability of the porous carbon shell have been related to the catalytic performance in FTS reactions.
Original languageEnglish
Pages (from-to)7120-7130
JournalACS Catalysis
Volume8
Issue number8
Early online date20 Jun 2018
DOIs
Publication statusPublished - 3 Aug 2018

Fingerprint

Acetylene
Cobalt
Metals
Nanoparticles
Fabrication
Catalysts
Carbon
Crystals
Graphite
Nanoclusters
Hydrocarbons
Graphene
Chemical vapor deposition
Catalyst activity
Oxygen
Atoms

Bibliographical note

Copyright © 2018 American Chemical Society

Cite this

Zhang, Chenghua ; Guo, Xiaoxue ; Yuan, Qingchun ; Zhang, Rongle ; Change, Qiang ; Li, Ke ; Xiao, Bo ; Liu, Suyao ; Ma, Caiping ; Liu, Xi ; Xu, Yiqun ; Wen, Xiadong ; Yang, Yong ; Li, Yongwang. / Ethyne Reducing Metal-Organic Frameworks to Control Fabrications of Core/shell Nanoparticles as Catalysts. In: ACS Catalysis. 2018 ; Vol. 8, No. 8. pp. 7120-7130.
@article{754455f0b601461990443e283b78b3ef,
title = "Ethyne Reducing Metal-Organic Frameworks to Control Fabrications of Core/shell Nanoparticles as Catalysts",
abstract = "An approach using cobalt metal-organic frameworks (Co-MOF) as precursors is established for the fabrication of cobalt nanoparticles in porous carbon shells (core/shell Co@C). Chemical vapor deposition of ethyne is used for controlling the reduction of cobalt nanoclusters in the MOF and the spontaneous formation of the porous carbon shells. The metallic cobalt cores formed are up to 4 - 6 nm with the crystal phase varying between hexagonally-close-packed (hcp) and face-centre-packed (fcc). The porous carbon shells change from amorphous to graphene with the ethyne deposition temperature increasing from 400 to 600 oC. The core/shell Co@C nanoparticles exhibit high catalytic activity in selectively converting syngas (CTY: 254.1 - 312.1 μmolCO·gCo-1·s-1) into hydrocarbons (4.0 - 5.2 gHC·g-cat-1·h-1) at 260 oC. As well as the crystal size and phase, the coordination numbers of the cobalt to oxygen and to other cobalt atoms on the surface of the cobalt nanoparticles, and the permeability of the porous carbon shell have been related to the catalytic performance in FTS reactions.",
author = "Chenghua Zhang and Xiaoxue Guo and Qingchun Yuan and Rongle Zhang and Qiang Change and Ke Li and Bo Xiao and Suyao Liu and Caiping Ma and Xi Liu and Yiqun Xu and Xiadong Wen and Yong Yang and Yongwang Li",
note = "Copyright {\circledC} 2018 American Chemical Society",
year = "2018",
month = "8",
day = "3",
doi = "10.1021/acscatal.8b01691",
language = "English",
volume = "8",
pages = "7120--7130",
journal = "ACS Catalysis",
issn = "2155-5435",
publisher = "American Chemical Society",
number = "8",

}

Zhang, C, Guo, X, Yuan, Q, Zhang, R, Change, Q, Li, K, Xiao, B, Liu, S, Ma, C, Liu, X, Xu, Y, Wen, X, Yang, Y & Li, Y 2018, 'Ethyne Reducing Metal-Organic Frameworks to Control Fabrications of Core/shell Nanoparticles as Catalysts', ACS Catalysis, vol. 8, no. 8, pp. 7120-7130. https://doi.org/10.1021/acscatal.8b01691

Ethyne Reducing Metal-Organic Frameworks to Control Fabrications of Core/shell Nanoparticles as Catalysts. / Zhang, Chenghua; Guo, Xiaoxue; Yuan, Qingchun; Zhang, Rongle; Change, Qiang; Li, Ke; Xiao, Bo ; Liu, Suyao; Ma, Caiping; Liu, Xi ; Xu, Yiqun; Wen, Xiadong; Yang, Yong; Li, Yongwang.

In: ACS Catalysis, Vol. 8, No. 8, 03.08.2018, p. 7120-7130.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ethyne Reducing Metal-Organic Frameworks to Control Fabrications of Core/shell Nanoparticles as Catalysts

AU - Zhang, Chenghua

AU - Guo, Xiaoxue

AU - Yuan, Qingchun

AU - Zhang, Rongle

AU - Change, Qiang

AU - Li, Ke

AU - Xiao, Bo

AU - Liu, Suyao

AU - Ma, Caiping

AU - Liu, Xi

AU - Xu, Yiqun

AU - Wen, Xiadong

AU - Yang, Yong

AU - Li, Yongwang

N1 - Copyright © 2018 American Chemical Society

PY - 2018/8/3

Y1 - 2018/8/3

N2 - An approach using cobalt metal-organic frameworks (Co-MOF) as precursors is established for the fabrication of cobalt nanoparticles in porous carbon shells (core/shell Co@C). Chemical vapor deposition of ethyne is used for controlling the reduction of cobalt nanoclusters in the MOF and the spontaneous formation of the porous carbon shells. The metallic cobalt cores formed are up to 4 - 6 nm with the crystal phase varying between hexagonally-close-packed (hcp) and face-centre-packed (fcc). The porous carbon shells change from amorphous to graphene with the ethyne deposition temperature increasing from 400 to 600 oC. The core/shell Co@C nanoparticles exhibit high catalytic activity in selectively converting syngas (CTY: 254.1 - 312.1 μmolCO·gCo-1·s-1) into hydrocarbons (4.0 - 5.2 gHC·g-cat-1·h-1) at 260 oC. As well as the crystal size and phase, the coordination numbers of the cobalt to oxygen and to other cobalt atoms on the surface of the cobalt nanoparticles, and the permeability of the porous carbon shell have been related to the catalytic performance in FTS reactions.

AB - An approach using cobalt metal-organic frameworks (Co-MOF) as precursors is established for the fabrication of cobalt nanoparticles in porous carbon shells (core/shell Co@C). Chemical vapor deposition of ethyne is used for controlling the reduction of cobalt nanoclusters in the MOF and the spontaneous formation of the porous carbon shells. The metallic cobalt cores formed are up to 4 - 6 nm with the crystal phase varying between hexagonally-close-packed (hcp) and face-centre-packed (fcc). The porous carbon shells change from amorphous to graphene with the ethyne deposition temperature increasing from 400 to 600 oC. The core/shell Co@C nanoparticles exhibit high catalytic activity in selectively converting syngas (CTY: 254.1 - 312.1 μmolCO·gCo-1·s-1) into hydrocarbons (4.0 - 5.2 gHC·g-cat-1·h-1) at 260 oC. As well as the crystal size and phase, the coordination numbers of the cobalt to oxygen and to other cobalt atoms on the surface of the cobalt nanoparticles, and the permeability of the porous carbon shell have been related to the catalytic performance in FTS reactions.

UR - https://pubs.acs.org/doi/10.1021/acscatal.8b01691

U2 - 10.1021/acscatal.8b01691

DO - 10.1021/acscatal.8b01691

M3 - Article

VL - 8

SP - 7120

EP - 7130

JO - ACS Catalysis

JF - ACS Catalysis

SN - 2155-5435

IS - 8

ER -