Imaging Science and Photochemistry ›› 2013, Vol. 31 ›› Issue (4): 257-267.DOI: 10.7517/j.issn.1674-0475.2013.04.002

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Effects of Phthalic Acid and Phthalazine on the Morphology of Silver Nanoparticles Formed by Dry-processed Thermal Reduction of Silver Stearate

ZHANG Zhan-jiang1, LI Jin-pei2   

  1. 1. Patent Examination Cooperation Center of the Patent Office, State Intellectual Property Office of P. R. C., Beijing 100083, P. R. China;
    2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • Received:2013-01-10 Revised:2013-05-09 Online:2013-07-15 Published:2013-07-15

Abstract:

The effect of phthalic acid and phthalazine on the morphology of silver particles formed by dry-processed thermal reduction of silver stearate was investigated. Experimental results show that phthalic acid resulted in the formation of spherical silver both in TG model system and in PTG system. Phthalazine facilitated the formation of spherical silver and filamentary silver in TG model system and PTG system, respectively. The sequence of the addition of toners had an important effect on silver morphology. The synergetic effect of toner pair and photosensitive catalyst led to the formation of dendritic silver in PTG system. The possible mechanism for the formation of silver nanoparticles was proposed.

Key words: silver nanoparticles, photothermographic, phthalic acid, phthalazine

CLC Number: