@conference{
author = "Zdravković, Jelena D. and Radovanović, Lidija D. and Simović, Bojana M. and Poleti, Dejan D. and Rogan, Jelena R. and Zeković, Ivana and Dramićanin, Miroslav D. and Mihajlovski, Katarina R. and Radovanović, Željko M.",
year = "2016",
abstract = "Studies related to the synthesis of nanosized ZnO as the antibacterial agent have become an
interdisciplinary area gathering chemists, physicists, biologists, and medics. The broad scope
of materials based on ZnO resulted in the development of various techniques for its
preparation. Considering the dependence of particle shape and size onto physical and
chemical properties of ZnO, the synthesis procedure is of major importance.
In this work, an unconventional methodology of synthesis is proposed for obtaining
nanosized ZnO. Polymeric zinc complex containing 2,2’-dipyridylamine (dipya) and dianion
of 1,3-benzenedicarboxylic acid (ipht), [Zn(dipya)(ipht)]n, was used as precursor. Besides
the crystal structure of [Zn(dipya)(ipht)]n which was already published [1], the luminescent
properties are presented in this work. Also, the amazing antibacterial activity of this
precursor prompted us to investigate the relationship between the crystal structure and
thermal properties, especially if we bear in mind the lack of similar studies in the literature.
Therefore, the mechanism and kinetics of its degradation was investigated under nonisothermal conditions in nitrogen and air atmospheres.
Degradation enthalpies, thermodynamic activation parameters, pre-exponential factor, A,
and the apparent activation energy, Ea, were determined for each step using Kissinger’s and
Ozawa’s equations. The complexity of degradation steps has been analyzed using
isoconversional methods. TG/DCS data were collected at four different heating rates: 10, 15,
20 and 25 ºC min
–1
, while the formation of nanosized ZnO was confirmed using XRPD and
FESEM techniques. The influence of precursor on the crystallite size and morphology of the
resulting ZnO along with its antibacterial activity was examined. The obtained results will be
discussed and compared.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Science and Engineering, December 7-9, 2016, Belgrade, Serbia",
title = "Decomposition mechanism and kinetics of zinc–isophthalate complex with 2,2’-dipyridylamine as a precursor for obtaining nanosized zinc oxide",
pages = "47",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6700"
}
