Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 1, Pages 1489-1494Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.07.033
Keywords
Nanocomposites; Chemical properties; ZnO; Thermal applications
Categories
Funding
- Explosion Science and Technology Key Laboratory Foundation of China [KFJJ09-7]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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N-doped ZnO/Ag nanocomposites were rapidly synthesized by a deflagration method within tens of seconds, using urea as fuel and citric acid as vesicant. Characterization results showed that the samples were nanoparticles with an average size of about 15 nm. Most of Ag existed in the form of metallic Ag (0), and N was doped into the composite in the form of acceptor impurities. Compared with pure ZnO, the N-doped ZnO/Ag nanocomposites possessed a remarkably enhanced catalytic efficiency on the thermal decomposition of ammonium perchlorate. This is particularly true for the sample containing 4.0% Ag as it offered the best catalytic performance and reduced the final decomposition temperature of AP to 290 degrees C from 453 degrees C. The mechanism showed that the high decomposition rate of AP was due to N doping and Ag modification being able to transfer efficiently electrons from ClO4- to NH4+ in ammonium perchlorate. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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