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Microwave-assisted purification of detonation nanodiamond

Citation

Mitev, DP and Townsend, AT and Paull, B and Nesterenko, PN, Microwave-assisted purification of detonation nanodiamond, Diamond and Related Materials, 48 pp. 37-46. ISSN 0925-9635 (2014) [Refereed Article]

Copyright Statement

Copyright 2014 Elsevier B.V

DOI: doi:10.1016/j.diamond.2014.06.007

Abstract

In the present work microwave-assisted purification approaches for detonation nanodiamond (DND) are considered, and the resultant impurity content of purified DND revealed by direct ICP-MS and elemental analysis. A significant reduction in noncarbon contaminants as compared with detonation soot was achieved with resulting purity of 99.95%. Surface characterisation including scanning electronic microscopy, low temperature adsorption of nitrogen, acid–base potentiometric titration, zeta potential measurements and particle size distribution of the DND in suspensions revealed distinctive surface properties for each purified DND sample. Results highlight the suitability of the microwave purification approach using acid reagents, allowing nanodiamonds with different and reproducible surface properties to be produced or modified. Contamination effects from laboratory glassware used to store samples were carefully considered. Refined DND with impurity levels over two orders of magnitude lower than commercially available samples was prepared. The profile and concentration levels of residual impurities in purified samples of nanodiamond are discussed with identification of possible reasons for contamination.

Item Details

Item Type:Refereed Article
Keywords:detonation nanodiamond, liquid-phase purification, microwave, surface properties, complexing reagents
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Quality Assurance, Chemometrics, Traceability and Metrological Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Mitev, DP (Dr Dimitar Mitev)
Author:Townsend, AT (Associate Professor Ashley Townsend)
Author:Paull, B (Professor Brett Paull)
Author:Nesterenko, PN (Professor Pavel Nesterenko)
ID Code:93694
Year Published:2014
Web of Science® Times Cited:9
Deposited By:Austn Centre for Research in Separation Science
Deposited On:2014-08-13
Last Modified:2017-10-27
Downloads:0

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