Ex-Solution Hybrids Functionalized on Oxide Nanofibers for Highly Active and Durable Catalytic Materials
- Authors
- Kim, Dong-Ha; Kim, Jun Kyu; Oh, DongHwan; Park, Seyeon; Kim, Yong Beom; Ko, Jaehyun; Jung, WooChul; Kim, Il-Doo
- Issue Date
- Mar-2023
- Publisher
- American Chemical Society
- Keywords
- ex-solution; gas sensors; heterogeneous catalysts; hybrid catalysts; metal alloy
- Citation
- ACS Nano, v.17, no.6, pp 5842 - 5851
- Pages
- 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Nano
- Volume
- 17
- Number
- 6
- Start Page
- 5842
- End Page
- 5851
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/117760
- DOI
- 10.1021/acsnano.2c12580
- ISSN
- 1936-0851
1936-086X
- Abstract
- Ex-solution catalysts containing spontaneously formed metal nanoparticles socketed on the surface of reservoir oxides have recently been employed in various research fields including catalysis and sensing, due to the process efficiency and outstanding chemical/thermal stability. However, since the ex-solution process accompanies harsh reduction heat treatment, during which many oxides undergo phase decomposition, it restricts material selection and further advancement. Herein, we propose an elaborate design principle to uniformly functionalize ex-solution catalysts at porous oxide frameworks via an electrospinning process. As a case study, we selected the ex-solved La0.6Ca0.4Fe0.95Co0.05-xNixO3−δ (x = 0, 0.025 and 0.05) and SnO2 nanofibers as ex-solution hybrids and main frameworks, respectively. We confirmed superior dimethyl sulfide (C2H6S) gas sensing characteristics with excellent long-cycling stability. In particular, the high catalytic activities of ex-solved CoNiFe ternary nanoparticles, strongly socketed on reservoir oxide, accelerate the spillover process of O2 to dramatically enhance the response toward sulfuric analytes with exceptional tolerance. Altogether, our contribution represents an important stepping-stone to a rational design of ex-solved particle-reservoir oxide hybrids functionalized on porous oxide scaffolds for a variety of applications. © 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/117760)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.