Thermally oxidized aluminum as catalyst-support layer for vertically aligned single-walled carbon nanotube growth using ethanol

Mohd Abid, Mohd Asyadi Azam (2011) Thermally oxidized aluminum as catalyst-support layer for vertically aligned single-walled carbon nanotube growth using ethanol. Applied Surface Science, 258. pp. 873-882. ISSN 0169-4332

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Abstract

Characteristics and role of Al oxide (Al-O) films used as catalyst-support layer for vertical growth of single-walled carbon nanotubes (SWCNTs) were studied. EB-deposited Al films (20 nm) were thermally-oxidized at 400 oC (10 min, static air) to produce the most appropriate surface structure of Al-O. Al-O catalyst-support layers were characterized using various analytical measurements, i.e., atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and spectroscopy ellipsometry (SE). The thermally-oxidized Al-O has a highly-roughened surface, and also has the most suitable surface chemical states compared to other type of Al-O support layers. We suggest that the surface of thermally-oxidized Al-O characterized in this work enhanced Co catalyst activity to promote the vertically-aligned SWCNT growth.

Item Type:	Article
Uncontrolled Keywords:	Vertically aligned single-walled CNT, Aluminum oxide support layer, Co catalyst, Ethanol CVD, Al-O surface roughness, Al-O surface chemical state
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Divisions:	Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User:	Dr Mohd Asyadi 'Azam Bin Mohd Abid
Date Deposited:	24 Jul 2012 03:47
Last Modified:	06 Jan 2022 15:34
URI:	http://eprints.utem.edu.my/id/eprint/4620
Statistic Details:	View Download Statistic

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