The formation of ZnO nanoparticles from zinc gluconate

Autor(en)

Željka Petrović, Mira Ristić, Svetozar Musić, Bogdan Sepiol, Herwig Peterlik

Abstrakt

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 aging of the precipitation systems at room temperature for the period between 1 and 60 days and calcination of isolated precipitates at 300°C. The crystallites of all ZnO samples were in nanosize range as determined with the Scherrer method. There were no significant texture effects what indicates the lack of preferential ZnO crystallites orientation. XRD showed amorphous nature of zinc (hydrous)oxide precursors. SAXS analysis of zinc (hydrous)oxide precursor showed the presence of structural units with a mean distance of 1.5 nm. This is attributed to the typical distance of the adsorbed gluconate groups. Adsorption of gluconate groups on zinc (hydrous)oxide precursor was confirmed with FT-IR spectroscopy. FE-SEM images showed gradual aggregation of ZnO nanoparticles with prolonged ageing time of 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(en)

Dynamik Kondensierter Systeme

Externe Organisation(en)

Rudjer Boskovic Institute

Journal

Ceramics International

Band

41

Seiten

4975-4981

Anzahl der Seiten

7

ISSN

0272-8842

DOI

https://doi.org/10.1016/j.ceramint.2014.12.061

Publikationsdatum

12-2014

Peer-reviewed

Ja

ÖFOS 2012

104003 Anorganische Chemie, 104008 Katalyse, 103009 Festkörperphysik

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Ceramics and Composites, Materials Chemistry, Surfaces, Coatings and Films, Process Chemistry and Technology

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/the-formation-of-zno-nanoparticles-from-zinc-gluconate(de4b7cb9-9435-4056-8c6a-3a344c78b150).html