University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Influence of acoustic cavitation on the controlled ultrasonic dispersion of carbon nanotubes.

Sesis, A, Hodnett, M, Memoli, G, Wain, AJ, Jurewicz, I, Dalton, AB, Carey, JD and Hinds, G (2013) Influence of acoustic cavitation on the controlled ultrasonic dispersion of carbon nanotubes. Journal of Physical Chemistry B, 117 (48). pp. 15141-15150.

[img]
Preview
Text
J Phys Chem 117.pdf - ["content_typename_Submitted version (pre-print)" not defined]
Available under License : See the attached licence file.

Download (2MB) | Preview
[img]
Preview
PDF (licence)
SRI_deposit_agreement.pdf
Available under License : See the attached licence file.

Download (33kB) | Preview

Abstract

Ultrasonication is the most widely used technique for the dispersion of a range of nanomaterials, but the intrinsic mechanism which leads to stable solutions is poorly understood with procedures quoted in the literature typically specifying only extrinsic parameters such as nominal electrical input power and exposure time. Here we present new insights into the dispersion mechanism of a representative nanomaterial, single-walled carbon nanotubes (SW-CNTs), using a novel up-scalable sonoreactor and an in situ technique for the measurement of acoustic cavitation activity during ultrasonication. We distinguish between stable cavitation, which leads to chemical modification of the surface of the CNTs, and inertial cavitation, which favors CNT exfoliation and length reduction. Efficient dispersion of CNTs in aqueous solution is found to be dominated by mechanical forces generated via inertial cavitation, which in turn depends critically on surfactant concentration. This study highlights that careful measurement and control of cavitation rather than blind application of input power is essential in the large volume production of nanomaterial dispersions with tailored properties.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
AuthorsEmailORCID
Sesis, AUNSPECIFIEDUNSPECIFIED
Hodnett, MUNSPECIFIEDUNSPECIFIED
Memoli, GUNSPECIFIEDUNSPECIFIED
Wain, AJUNSPECIFIEDUNSPECIFIED
Jurewicz, IUNSPECIFIEDUNSPECIFIED
Dalton, ABUNSPECIFIEDUNSPECIFIED
Carey, JDUNSPECIFIEDUNSPECIFIED
Hinds, GUNSPECIFIEDUNSPECIFIED
Date : 5 December 2013
Identification Number : 10.1021/jp410041y
Uncontrolled Keywords : carbon nanotubes, dispersion, functionalisation, functionalization, nanomaterial disperion, sonication, acoustic cavitation, ultrasonication, Raman spectroscopy, nanotube length control, inertial cavitation, stable cavitation, sonochemistry, H2O2 production, bubbles, cavitation, Material science, material processing, science and technology, nanotechnology
Related URLs :
Additional Information : This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry B, copyright © American Chemical Society after peer review and technical editing by the publisher.To access the final edited and published work see http://dx.doi.org/10.1021/jp410041y
Depositing User : Symplectic Elements
Date Deposited : 17 Mar 2015 15:47
Last Modified : 17 Mar 2015 15:47
URI: http://epubs.surrey.ac.uk/id/eprint/805050

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800