Journal article
An Ion-Imprinting Derived Strategy to Synthesize Single-Atom Iron Electrocatalysts for Oxygen Reduction
Small (Weinheim an der Bergstrasse, Germany), Vol.17(16), pp.1-8
04/01/2021
PMID: 33306278
Abstract
Carbon-based single-atom catalysts (CSACs) have recently received extensive attention in catalysis research. However, the preparation process of CSACs involves a high-temperature treatment, during which metal atoms are mobile and aggregated into nanoparticles, detrimental to the catalytic performance. Herein, an ion-imprinting derived strategy is proposed to synthesize CSACs, in which isolated metal-nitrogen-carbon (Me-N-4-C-x) moiety covalently binds oxygen atoms in Si-based molecular sieve frameworks. Such a feature makes Me-N-4-C-x moiety well protected/confined during the heat treatment, resulting in the final material enriched with single-atom metal active sites. As a proof of concept, a single-atom Fe-N-C catalyst is synthesized by using this ion-imprinting derived strategy. Experimental results and theoretical calculations demonstrate high concentration of single FeN4 active sites distributed in this catalyst, resulting in an outstanding oxygen reduction reaction (ORR) performance with a half-wave potential of 0.908 V in alkaline media.
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Details
- Title
- An Ion-Imprinting Derived Strategy to Synthesize Single-Atom Iron Electrocatalysts for Oxygen Reduction
- Creators
- Shichao Ding - Washington State UniversityZhaoyuan Lyu - Washington State UniversityHong Zhong - Washington State UniversityDong Liu - Washington State UniversityErik Sarnello - Northern Illinois UniversityLingzhe Fang - Northern Illinois UniversityMingjie Xu - University of California, IrvineMark H. Engelhard - Pacific Northwest National LaboratoryHangyu Tian - Washington State UniversityTao Li - Northern Illinois UniversityXiaoqing Pan - University of California, IrvineScott P. Beckman - Washington State UniversityShuo Feng - Washington State UniversityDan Du - Washington State UniversityJin-Cheng Li - Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USAMinhua Shao - Hong Kong University of Science and TechnologyYuehe Lin - Washington State University
- Publication Details
- Small (Weinheim an der Bergstrasse, Germany), Vol.17(16), pp.1-8
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Wiley
- Number of pages
- 8
- Grant note
- 2020A1515011044 / Guangdong Basic and Applied Basic Research Foundation DE-AC02-06CH11357 / DOE Office of Science; United States Department of Energy (DOE) 2019M652843 / China Postdoctoral Science Foundation CSC201806290030 / China Scholarship Council NIU startup WSU Office of Biological and Environmental Research; UK Research & Innovation (UKRI); Biotechnology and Biological Sciences Research Council (BBSRC)
- Identifiers
- 99901227841101842
- Language
- English
- Resource Type
- Journal article