Effect of surface treatment with potassium persulfate on dispersion stability of multi-walled carbon nanotubes

Park, Ok-kyung and Kim, Nam Hoon and Lau, Kin-Tak and Lee, Joong Hee (2010) Effect of surface treatment with potassium persulfate on dispersion stability of multi-walled carbon nanotubes. Materials Letters, 64 (6). pp. 718-721. ISSN 0167-577X

Abstract

Muti-walled carbon nanotubes (MWCNTs) were treated with different concentrations of potassium persulfate (KPS; K2S2O8) to improve their dispersion stability, which were characterized by thermal gravimetric analysis, ultraviolet/visible spectroscopy, field emission scanning electron microscopy and field emission transmission electron microscopy. The amount of sulfate groups on the MWCNTs increased with increasing KPS concentration, which enhanced the hydrophilicity, but deteriorated the dispersion stability. The optimal KPS concentration for the best dispersion stability of the KPS-treated MWCNTs was 0.01 M.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Professor Alan Lau
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 05 Apr 2011 23:32
Last Modified: 03 Jul 2013 00:36
Uncontrolled Keywords: nanomaterials; surfaces; dispersion stability; potassium persulfate (KPS); field emission scanning electron microscopy; field-emission transmission electron microscopies; sulfate groups; thermal gravimetric analysis
Fields of Research (FOR2008): 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030602 Chemical Thermodynamics and Energetics
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: doi: 10.1016/j.matlet.2009.12.048
URI: http://eprints.usq.edu.au/id/eprint/18823

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