Premium
Dispersion of Oleate‐Modified CuO Nanoparticles in a Nonpolar Solvent
Author(s) -
Jeng JawYeu,
Liu JenChieh,
Jean JauHo
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01958.x
Subject(s) - dispersion (optics) , aqueous solution , precipitation , nanoparticle , colloid , oxide , suspension (topology) , solvent , dispersion stability , inorganic chemistry , octane , chemical engineering , particle (ecology) , phase (matter) , chemistry , particle size , stearic acid , aqueous two phase system , materials science , organic chemistry , nanotechnology , physics , mathematics , oceanography , engineering , homotopy , geology , meteorology , pure mathematics , optics
Two nanosized cupric oxide powders, which are synthesized by a vapor‐phase reaction and aqueous precipitation, are surface modified with oleic acid to form cupric oleate on the surface. This enhances the dispersibility of cupric oxide powders in a nonpolar solvent of octane. The cupric oxide powder prepared by aqueous precipitation exhibits much better dispersion in octane than that synthesized by vapor‐phase reaction. This is attributed to the presence of larger amounts of hydroxyl group on the particle surface, forming more cupric oleate and thus enhancing the colloidal stability of the resulting organic suspension.