Salt-Assisted Ultrasonic Deaggregation of Nanodiamond

Abstract

We report a new facile, inexpensive, and contaminant-free technique of salt-assisted ultrasonic deaggregation (SAUD) of nanodiamond into single-digit particles stable in aqueous colloidal solution in a wide pH range. The technique utilizes the energy of ultrasound to break apart nanodiamond aggregates in sodium chloride aqueous slurry. In contrast to current deaggregation techniques, which introduce zirconia contaminants into nanodiamond, the single-digit nanodiamond colloids produced by SAUD have no toxic or difficult-to-remove impurities and are therefore well-suited to produce nanodiamonds for numerous applications, including theranostics, composites, and lubrication, etc. Requiring only aqueous slurry of sodium chloride and standard horn sonicator, and yielding highly pure well-dispersed nanodiamond colloids, the technique is an attractive alternative to current nanodiamond deaggregation protocols and can be easily implemented in any laboratory or scaled up for industrial use.

Department(s)

Chemistry

Research Center/Lab(s)

Center for High Performance Computing Research

Keywords and Phrases

Colloids; Impurities; Nanoparticles; Removal; Salts; Sodium Chloride; Ultrasonic Applications; Ultrasonics; Zirconia; Aqueous Colloidal Solutions; Aqueous Slurries; Colloidal Solutions; De Aggregations; Industrial Use; Salt-Assisted; Well-Dispersed; Wide PH Range; Nanodiamonds

International Standard Serial Number (ISSN)

1944-8244

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 American Chemical Society (ACS), All rights reserved.

Publication Date

01 Jan 2016

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