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Assessing the extent, stability, purity and properties of silanised detonation nanodiamond

Citation

Duffy, E and Mitev, DP and Thickett, SC and Townsend, AT and Paull, B and Nesterenko, PN, Assessing the extent, stability, purity and properties of silanised detonation nanodiamond, Applied Surface Science, 357, (Part A) pp. 397-406. ISSN 0169-4332 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier B.V.

DOI: doi:10.1016/j.apsusc.2015.09.002

Abstract

The functionalisation of nanodiamond is a key step in furthering its application in areas such as surface coatings, drug delivery, bio imaging and other biomedical avenues. Accordingly, analytical methods for the detailed characterisation of functionalised nano-material are of great importance. This work presents an alternative approach for the elemental analysis of zero-dimensional nanocarbons, specifically detonation nanodiamond (DND) following purification and functionalisation procedures. There is a particular emphasis on the presence of silicon, both for the purified DND and after its functionalisation with silanes. Five different silylation procedures for purified DND were explored and assessed quantitatively using inductively coupled plasma-mass spectrometry (ICP-MS) for analysis of dilute suspensions. A maximum Si loading of 29,300 μg g−1 on the DND was achieved through a combination of silylating reagents. The presence of 28 other elements in the DND materials was also quantified by ICP-MS. The characterisation of Si-bond formation was supported by FTIR and XPS evaluation of relevant functional groups. The thermal stability of the silylated DND was examined by thermogravimetric analysis. Improved particle size distribution and dispersion stability resulted from the silylation procedure, as confirmed by dynamic light scattering and capillary zone electrophoresis.

Item Details

Item Type:Refereed Article
Keywords:detonation nanodiamond, surface modification, silanisation, dispersion stability, elemental composition, thermal stability
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Duffy, E (Miss Emer Duffy)
Author:Mitev, DP (Dr Dimitar Mitev)
Author:Thickett, SC (Dr Stuart Thickett)
Author:Townsend, AT (Associate Professor Ashley Townsend)
Author:Paull, B (Professor Brett Paull)
Author:Nesterenko, PN (Professor Pavel Nesterenko)
ID Code:102965
Year Published:2015
Funding Support:Australian Research Council (DP150102608)
Web of Science® Times Cited:6
Deposited By:Chemistry
Deposited On:2015-09-14
Last Modified:2018-03-16
Downloads:0

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