Publications

The formation of ZnO nanoparticles from zinc gluconate

Author(s)
Željka Petrović, Mira Ristić, Svetozar Musić, Bogdan Sepiol, Herwig Peterlik
Abstract

A simple and reproducible procedure for the preparation of ZnO nanoparticles is presented. It is based on the alkali precipitation from zinc gluconate solution, followed by ageing the precipitation systems at room temperature for a period between 1 and 60 days and calcination of isolated precipitates at 300 °C. The crystallites of all ZnO samples were in the nanosize range as determined by the Scherrer method. There were no significant texture effects, which indicates the lack of a preferential ZnO crystallite orientation. XRD showed the amorphous nature of zinc (hydrous)oxide precursors. SAXS analysis of a zinc (hydrous)oxide precursor showed the presence of structural units at the mean distance of 1.5 nm. This is attributed to the typical distance of the adsorbed gluconate groups. The adsorption of gluconate groups on the zinc (hydrous)oxide precursor was confirmed by FT-IR spectroscopy. FE-SEM images showed a gradual aggregation of ZnO nanoparticles with the prolonged ageing time of the amorphous zinc (hydrous)oxide suspension. Optical spectra were recorded and the band gap gradually decreased from 3.25 eV to 3.05 eV for ZnO samples produced from initially precipitated suspensions aged between 1 and 60 days.

Organisation(s)
Dynamics of Condensed Systems
External organisation(s)
Rudjer Boskovic Institute
Journal
Ceramics International
Volume
41
Pages
4975-4981
No. of pages
7
ISSN
0272-8842
DOI
https://doi.org/10.1016/j.ceramint.2014.12.061
Publication date
12-2014
Peer reviewed
Yes
Austrian Fields of Science 2012
104003 Inorganic chemistry, 104008 Catalysis, 103009 Solid state physics
Keywords
ASJC Scopus subject areas
Electronic, Optical and Magnetic Materials, Ceramics and Composites, Materials Chemistry, Surfaces, Coatings and Films, Process Chemistry and Technology
Portal url
https://ucris.univie.ac.at/portal/en/publications/the-formation-of-zno-nanoparticles-from-zinc-gluconate(de4b7cb9-9435-4056-8c6a-3a344c78b150).html