BROWSE

Related Scientist

Researcher

다차원 탄소재료 연구단
다차원 탄소재료 연구단
more info

Contact-Induced Phase Separation of Alloy Catalyst to Promote Carbon Nanotube Growth

Cited 0 time in webofscience Cited 0 time in scopus
16 Viewed 2 Downloaded
Title
Contact-Induced Phase Separation of Alloy Catalyst to Promote Carbon Nanotube Growth
Author(s)
Lu Qiu; Feng Ding
Publication Date
2019-12
Journal
PHYSICAL REVIEW LETTERS, v.123, no.25, pp.256101 -
Publisher
AMER PHYSICAL SOC
Abstract
© 2019 American Physical Society.In this Letter, using density functional theory based molecular dynamics simulations, we report that contact to a carbon nanotube (CNT) induces phase separation in an alloy catalyst, which promotes CNT growth. During growth of a CNT, the growth front tends to preferentially bond to the more active metal atom in the alloy catalyst, thus triggering a phase separation of the alloy catalyst particle. The accumulation of the active metal stabilizes the open end of the CNT, attracts carbon precursors to rapidly diffuse to the growth front, and avoids catalyst poisoning by preventing the encapsulation of the catalyst. This study resolves a long-term mystery surrounding the higher efficiency of alloy catalysts in CNT growth as compared to a pure metal catalyst and thereby paves the way to a more rational catalyst design for controlled CNT growth
URI
https://pr.ibs.re.kr/handle/8788114/6688
ISSN
0031-9007
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Files in This Item:
01 PhysRevLett.123.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse