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Preparation and Characterization of Silver Myristate/AgBr Composite Particles

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Abstract:

Silver myristate/AgBr composite particles were prepared by using silver nitrate, sodium hydroxide, myristic acid, and sodium bromide as raw materials and PVP as surfactant in water-alcohol system and characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), ultraviolet-visible spectroscopy (UV) and differential scanning calorimetry (DSC). The results showed that silver myristate/AgBr composite particles are composed of rod-like silver myristate grains with a layer structure and small silver bromide particles formed on the surface of silver myristate. Silver bromide can extend the ultraviolet absorbance range of silver myristate. The size of silver myristate is about 260nm and the average size of silver bromide is about 44nm. TG and DSC analysis showed that the reaction was carried out completely. The composite particles start to decompose at about 210oC. Silver bromide of the composite particles melts at 418.2oC.

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Periodical:

Materials Science Forum (Volumes 663-665)

Pages:

1089-1092

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.663-665.1089

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Online since:

November 2010

Authors:

Ya Ling Li, Jia Ning Ning, Yuan Mei Chen, Guang Fei Liu, Guo Qing Zhang

Keywords:

Composite Particle, Silver Bromide, Silver Carboxylate, Silver Myristate

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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