Flash-Thermal Shock Synthesis of Single Atoms in Ambient Air
- Authors
- Kim, Dong-Ha; Cha, Jun-Hwe; Chong, Sanggyu; Cho, Su-Ho; Shin, Hamin; Ahn, Jaewan; Jeon, Dogyeong; Kim, Jihan; Choi, Sung-Yool; Kim, Il-Doo
- Issue Date
- Dec-2023
- Publisher
- American Chemical Society
- Keywords
- ambient-air process; intense pulsed light; N-doping; photothermal effect; single-atom
- Citation
- ACS Nano, v.17, no.23, pp 23347 - 23358
- Pages
- 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Nano
- Volume
- 17
- Number
- 23
- Start Page
- 23347
- End Page
- 23358
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/117761
- DOI
- 10.1021/acsnano.3c02968
- ISSN
- 1936-0851
1936-086X
- Abstract
- Single-atom catalysts feature interesting catalytic activity toward applications that rely on surface reactions such as electrochemical energy storage, catalysis, and gas sensors. However, conventional synthetic approaches for such catalysts require extended periods of high-temperature annealing in vacuum systems, limiting their throughput and increasing their production cost. Herein, we report an ultrafast flash-thermal shock (FTS)-induced annealing technique (temperature > 2850 °C, <10 ms duration, and ramping/cooling rates of ∼105 K/s) that operates in an ambient-air environment to prepare single-atom-stabilized N-doped graphene. Melamine is utilized as an N-doping source to provide thermodynamically favorable metal-nitrogen bonding sites, resulting in a uniform and high-density atomic distribution of single metal atoms. To demonstrate the practical utility of the single-atom-stabilized N-doped graphene produced by the FTS method, we showcased their chemiresistive gas sensing capabilities and electrocatalytic activities. Overall, the air-ambient, ultrafast, and versatile (e.g., Co, Ni, Pt, and Co-Ni dual metal) FTS method provides a general route for high-throughput, large area, and vacuum-free manufacturing of single-atom catalysts. © 2023 American Chemical Society.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/117761)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.