期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 288, 期 2, 页码 489-495出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2005.03.017
关键词
colloidal silvers; metal nanoparticles; nanoparticle structured; tabular silver particles; silver particles
Uniform, well-dispersed silver particles of various morphologies have been prepared by reducing highly acidic silver nitrate solutions with ascorbic acid in the presence of a sodium naphthalene sulfonate-formaldehyde copolymer as dispersing agent. By varying the temperature of the reaction, the free acid content, the addition rate of the reductant, and the aging time, both isometric and anisotropic silver particles could be obtained. It was found that the latter were formed by aggregation of nanosize subunits, which were identified by electron microscopy and X-ray diffractometry. (c) 2005 Elsevier Inc. All rights reserved.
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