Effect of Enhanced Thermal Stability of Alumina Support Layer on Growth of Vertically Aligned Single-Walled Carbon Nanotubes and Their Application in Nanofiltration Membranes
- Authors
- In, Jung Bin; Cho, Kang Rae; Tung Xuan Tran; Kim, Seok-Min; Wang, Yinmin; Grigoropoulos, Costas P.; Noy, Aleksandr; Fornasiero, Francesco
- Issue Date
- Jun-2018
- Publisher
- SPRINGER
- Keywords
- Single-walled carbon nanotube; Catalyst; Alumina; CNT membrane
- Citation
- NANOSCALE RESEARCH LETTERS, v.13
- Journal Title
- NANOSCALE RESEARCH LETTERS
- Volume
- 13
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/2058
- DOI
- 10.1186/s11671-018-2585-3
- ISSN
- 1556-276X
1556-276X
- Abstract
- We investigate the thermal stability of alumina supporting layers sputtered at different conditions and its effect on the growth of aligned single-walled carbon nanotube arrays. Radio frequency magnetron sputtering of alumina under oxygen-argon atmosphere produces a Si-rich alumina alloy film on a silicon substrate. Atomic force microscopy on the annealed catalysts reveals that Si-rich alumina films are more stable than alumina layers with low Si content at the elevated temperatures at which the growth of single-walled carbon nanotubes is initiated. The enhanced thermal stability of the Si-rich alumina layer results in a narrower (< 2.2 nm) diameter distribution of the single-walled carbon nanotubes. Thanks to the smaller diameters of their nanotube pores, membranes fabricated with vertically aligned nanotubes grown on the stable layers display improved ion selectivity.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/2058)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.