Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2499
Title: Synthesis of ZnO nanopowder via an aqueous acetate-citrate gelation method
Authors: MONDELAERS, Dirk 
VANHOYLAND, Geert 
VAN DEN RUL, Heidi 
D'HAEN, Jan 
VAN BAEL, Marlies 
MULLENS, Jules 
VAN POUCKE, Lucien 
Issue Date: 2002
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Source: MATERIALS RESEARCH BULLETIN, 37(5). p. 901-914
Abstract: The synthesis of nanoparticulate ZnO via an aqueous carboxylate gelation route is presented. Starting from a solution of zinc acetate with citric acid as a complexing agent, a solid glassy gel is obtained after drying that is converted into a fine powder by calcination. It is found that a very homogeneous precursor is indispensable when preparing very fine particles with a narrow size distribution. Cryo-transmission electron microscopy (Cryo-TEM) investigation is used as a feedback tool to prevent early precipitation during gelation. Study of the thermal decomposition of the gel shows that ZnO is formed before the final decomposition step takes place. After removing the organic backbone very small oxide particles are found. The influence of the thermal treatment parameters on the particle size is investigated and a particle growth process is found. By a proper adjustment of the final calcination temperature in dry air, the mean particle size can be controlled between similar to11 and 175 nm. It was also seen that even in inert atmosphere, ZnO is formed and that particle morphology is greatly influenced by the calcination atmosphere. (C) 2002 Elsevier Science Ltd. All rights reserved.
Notes: Limburgs Univ Ctr, Lab Inorgan & Phys Chem, B-3590 Diepenbeek, Belgium. Limburgs Univ Ctr, Div Mat Phys, IMO, B-3590 Diepenbeek, Belgium.Mondelaers, D, Limburgs Univ Ctr, Lab Inorgan & Phys Chem, Univ Campus, B-3590 Diepenbeek, Belgium.
Keywords: oxides; chemical synthesis; crystal growth; electron microscopy
Document URI: http://hdl.handle.net/1942/2499
ISSN: 0025-5408
e-ISSN: 1873-4227
ISI #: 000176387900010
Category: A1
Type: Journal Contribution
Validations: ecoom 2003
Appears in Collections:Research publications

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