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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