Synthesis of ultrafine gahnite (ZnAI20 4) nanocrystals by coprecipitation method

Miron Iasmina and Ursu Daniel and Grozescu Ioan: Synthesis of ultrafine gahnite (ZnAI20 4) nanocrystals by coprecipitation method.

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Abstract

Nanocrystalline zinc aluminate ZnAl20 4 has been obtained by coprecipitation method at two different temperatures (800°C and 900°C). The precursors used in coprecipitation synthesis of ZnAECE were zinc nitrate hexahydrate and aluminum nitrate nonahydrate. As a basic source sodium hydroxide was used. The obtained samples were analyzed by X-ray diffraction (XRD) and by energy dispersive spectroscopy (EDAX). Optical properties of nanocrystalline zinc aluminate were also determined by UV/VIS/NIR spectroscopy. The band gap for sample obtained at 800°C was 3,88 eV while for sample obtained at 900°C was 3,97 eV.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2012
Volume: 17
ISBN: 978-963-315-066-5
Page Range: pp. 362-365
Language: English
Publisher: SZAB
Place of Publication: Szeged
Event Title: International Symposium on Analytical and Environmental Problems (17.) (2011) (Szeged)
Event Type: Conference
Event Location: Szeged
Event Dates: 2011. szeptember 19.
Related URLs: http://acta.bibl.u-szeged.hu/76381/
Uncontrolled Keywords: Elektrokémia
Additional Information: Bibliogr.: 365. p. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.04. Chemical sciences
Date Deposited: 2022. Aug. 10. 14:36
Last Modified: 2022. Aug. 22. 10:23
URI: http://acta.bibl.u-szeged.hu/id/eprint/76464

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