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Characterization of ZnO nanoparticle suspension in water: Effectiveness of ultrasonic dispersion

Chung, SJ and Leonard, JP and Nettleship, I and Lee, JK and Soong, Y and Martello, DV and Chyu, MK (2009) Characterization of ZnO nanoparticle suspension in water: Effectiveness of ultrasonic dispersion. Powder Technology, 194 (1-2). 75 - 80. ISSN 0032-5910

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Suspensions of ZnO nanoparticles in water were prepared with the two-step powder dispersion process using several methods of ultrasonication. The dispersion of ZnO was found to proceed by a fragmentation process, with minimum achievable particle size in the range 50 to 300 nm. This is consistent with other oxide nanopowder systems, in which most primary particulates still remain in hardened aggregates that cannot be further reduced. A submersible accelerometer probe was developed and used to measure the relative ultrasonic energy field in the liquid for the various ultrasonication methods. Oscillation at the expected frequencies was identified in each case, with strong variability at different locations in the liquid volume. © 2009 Elsevier B.V. All rights reserved.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Chung, SJ
Leonard, JP
Nettleship, INETTLES@pitt.eduNETTLES
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Soong, Y
Martello, DV
Chyu, MKmkchyu@pitt.eduMKCHYU0000-0002-6746-1499
Centers: Other Centers, Institutes, Offices, or Units > Petersen Institute of NanoScience and Engineering
Date: 25 August 2009
Date Type: Publication
Journal or Publication Title: Powder Technology
Volume: 194
Number: 1-2
Page Range: 75 - 80
DOI or Unique Handle: 10.1016/j.powtec.2009.03.025
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0032-5910
Date Deposited: 16 Oct 2014 14:15
Last Modified: 31 Jan 2021 04:55


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