Thermal behavior of ZnO precursor powders obtained from aqueous solutions

Susana Mihaiu, János Madarász, György Pokol, Imre Miklós Szilágyi, Tímea Kaszás, Oana Cǎtǎlina Mocioiu, Irina Atkinson, Alexandra Toader, Cornel Munteanu, Virgil Emanuel Marinescu, Maria Zaharescu

Research output: Article

9 Citations (Scopus)

Abstract

The formation mechanism of ZnO nanopowders was investigated by appropriate experimental methods. The studied samples have been obtained using a wet chemical route based on Zn(NO3)2·nH2O (ZAH) - (CH2)6N4 (HMTA) system in which the molar ratio of the components was 4:1 and 2:1. From the same solution, depending on the experimental conditions used, gels, precipitates or hydrothermally grown powders were obtained. Thermal decomposition of the as-prepared powders was analysed by simultaneous thermogravimetric and differentialthermal analysis (TG/DTA) and differential scanning calorimetry (DSC) methods. X-ray diffraction method (XRD), FT-IR Spectroscopy and Scanning Electron Microscopy (SEM) were used to study the structure and morphology of the obtained samples and their evolution with thermal treatment. The correlation between the preparation parameters and the properties of the resulted ZnO powders was established.

Original languageEnglish
Pages (from-to)335-345
Number of pages11
JournalRevue Roumaine de Chimie
Volume58
Issue number4-5
Publication statusPublished - jan. 1 2013

ASJC Scopus subject areas

  • Chemistry(all)

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    Mihaiu, S., Madarász, J., Pokol, G., Szilágyi, I. M., Kaszás, T., Mocioiu, O. C., Atkinson, I., Toader, A., Munteanu, C., Marinescu, V. E., & Zaharescu, M. (2013). Thermal behavior of ZnO precursor powders obtained from aqueous solutions. Revue Roumaine de Chimie, 58(4-5), 335-345.