Modification of VO₂ Nano-Powders by Stearic Acid and its Mechanism

Abstract:

Stearic acid was applied to modify the VO₂ nanopowders, and the influence of modified medium, dosage of modifier, amount of activator, time of modification on the surface modification effect were studied. The modification parameters such as modifying agent and the conditions were optimized. The changes of Surface groups, particle size and the lipophilic degree of the dispersion system of VO₂ nanopowders before and after modified by the stearic acid were researched. The modification mechanism is chemical bonding, which is not physical adsorption. And then the stearic acid modified mechanism was established and applied to explain the the process of modification parameters optimization. The modification of VO₂ nanopowders could be used in color nanometer energy-saving coating.

• Periodical: Key Engineering Materials (Volume 727)
• Pages: 1009-1015
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.727.1009
• Online since: January 2017
• Authors: Yan Wu Chen, Feng Wang, Jian Qing Hu, Wei Ping Tu
• Keywords: Mechanism, Modification, Nano-Powders, Stearic Acid, VO₂

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