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Title: Universal Approach to Fabricating Graphene-Supported Single-Atom Catalysts from Doped ZnO Solid Solutions

Abstract

Single-atom catalysts (SACs) have attracted widespread interest for many catalytic applications because of their distinguishing properties. However, general and scalable synthesis of efficient SACs remains significantly challenging, which limits their applications. Here we report an efficient and universal approach to fabricating a series of high-content metal atoms anchored into hollow nitrogen-doped graphene frameworks (M-N-Grs; M represents Fe, Co, Ni, Cu, etc.) at gram-scale. The highly compatible doped ZnO templates, acting as the dispersants of targeted metal heteroatoms, can react with the incoming gaseous organic ligands to form doped metal-organic framework thin shells, whose composition determines the heteroatom species and contents in M-N-Grs. We achieved over 1.2 atom % (5.85 wt %) metal loading content, superior oxygen reduction activity over commercial Pt/C catalyst, and a very high diffusion-limiting current (6.82 mA cm-2). Both experimental analyses and theoretical calculations reveal the oxygen reduction activity sequence of M-N-Grs. Additionally, the superior performance in Fe-N-Gr is mainly attributed to its unique electron structure, rich exposed active sites, and robust hollow framework: This synthesis strategy will stimulate the rapid development of SACs for diverse energy-related fields.

Authors:
 [1];  [1];  [1]; ORCiD logo [2];  [3];  [4];  [1];  [5]; ORCiD logo [6];  [1];  [7];  [1];  [1]; ORCiD logo [7];  [4]; ORCiD logo [1]
  1. Wuhan Univ. of Technology (China)
  2. Harvard Univ., Cambridge, MA (United States)
  3. Wuhan Univ. of Science and Technology (China)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. A*STAR (Singapore)
  6. Univ. of Surrey (United Kingdom)
  7. Univ. of Melbourne (Australia)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China; Natural Science Foundation of Hubei Province
OSTI Identifier:
1798728
Grant/Contract Number:  
AC02-06CH11357; 51832004; 51521001; 2016YFA0202603; 2019CFA001; B17034
Resource Type:
Accepted Manuscript
Journal Name:
ACS Central Science
Additional Journal Information:
Journal Volume: 6; Journal Issue: 8; Journal ID: ISSN 2374-7943
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; redox reactions; oxides; metals; catalysts; metal oxide nanoparticles; single-atom catalyst; doped ZnO solid solution; hollow graphene framework; oxygen reduction reaction; universal approach

Citation Formats

Meng, Jiashen, Li, Jiantao, Liu, Jinshuai, Zhang, Xingcai, Jiang, Gengping, Ma, Lu, Hu, Zhi-Yi, Xi, Shibo, Zhao, Yunlong, Yan, Mengyu, Wang, Peiyao, Liu, Xiong, Li, Qidong, Liu, Jefferson Zhe, Wu, Tianpin, and Mai, Liqiang. Universal Approach to Fabricating Graphene-Supported Single-Atom Catalysts from Doped ZnO Solid Solutions. United States: N. p., 2020. Web. doi:10.1021/acscentsci.0c00458.
Meng, Jiashen, Li, Jiantao, Liu, Jinshuai, Zhang, Xingcai, Jiang, Gengping, Ma, Lu, Hu, Zhi-Yi, Xi, Shibo, Zhao, Yunlong, Yan, Mengyu, Wang, Peiyao, Liu, Xiong, Li, Qidong, Liu, Jefferson Zhe, Wu, Tianpin, & Mai, Liqiang. Universal Approach to Fabricating Graphene-Supported Single-Atom Catalysts from Doped ZnO Solid Solutions. United States. https://doi.org/10.1021/acscentsci.0c00458
Meng, Jiashen, Li, Jiantao, Liu, Jinshuai, Zhang, Xingcai, Jiang, Gengping, Ma, Lu, Hu, Zhi-Yi, Xi, Shibo, Zhao, Yunlong, Yan, Mengyu, Wang, Peiyao, Liu, Xiong, Li, Qidong, Liu, Jefferson Zhe, Wu, Tianpin, and Mai, Liqiang. Tue . "Universal Approach to Fabricating Graphene-Supported Single-Atom Catalysts from Doped ZnO Solid Solutions". United States. https://doi.org/10.1021/acscentsci.0c00458. https://www.osti.gov/servlets/purl/1798728.
@article{osti_1798728,
title = {Universal Approach to Fabricating Graphene-Supported Single-Atom Catalysts from Doped ZnO Solid Solutions},
author = {Meng, Jiashen and Li, Jiantao and Liu, Jinshuai and Zhang, Xingcai and Jiang, Gengping and Ma, Lu and Hu, Zhi-Yi and Xi, Shibo and Zhao, Yunlong and Yan, Mengyu and Wang, Peiyao and Liu, Xiong and Li, Qidong and Liu, Jefferson Zhe and Wu, Tianpin and Mai, Liqiang},
abstractNote = {Single-atom catalysts (SACs) have attracted widespread interest for many catalytic applications because of their distinguishing properties. However, general and scalable synthesis of efficient SACs remains significantly challenging, which limits their applications. Here we report an efficient and universal approach to fabricating a series of high-content metal atoms anchored into hollow nitrogen-doped graphene frameworks (M-N-Grs; M represents Fe, Co, Ni, Cu, etc.) at gram-scale. The highly compatible doped ZnO templates, acting as the dispersants of targeted metal heteroatoms, can react with the incoming gaseous organic ligands to form doped metal-organic framework thin shells, whose composition determines the heteroatom species and contents in M-N-Grs. We achieved over 1.2 atom % (5.85 wt %) metal loading content, superior oxygen reduction activity over commercial Pt/C catalyst, and a very high diffusion-limiting current (6.82 mA cm-2). Both experimental analyses and theoretical calculations reveal the oxygen reduction activity sequence of M-N-Grs. Additionally, the superior performance in Fe-N-Gr is mainly attributed to its unique electron structure, rich exposed active sites, and robust hollow framework: This synthesis strategy will stimulate the rapid development of SACs for diverse energy-related fields.},
doi = {10.1021/acscentsci.0c00458},
journal = {ACS Central Science},
number = 8,
volume = 6,
place = {United States},
year = {Tue Jul 07 00:00:00 EDT 2020},
month = {Tue Jul 07 00:00:00 EDT 2020}
}

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