Assisted spray pyrolysis production and characterisation of ZnO nanoparticles with narrow size distribution |
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| Authors: | S Turner S M F Tavernier G Huyberechts E Biermans S Bals K J Batenburg and G Van Tendeloo |
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| Institution: | (1) EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium;(2) Department of Applied Engineering and Technology, Karel de Grote University College, Salesianenlaan 30, 2660 Hoboken, Belgium;(3) Umicore Group R&D, Kasteelstraat 7, 2250 Olen, Belgium;(4) Vision Lab, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium |
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| Abstract: | Nano-sized ZnO particles with a narrow size distribution and high crystallinity were prepared from aqueous solutions with
high concentrations of Zn2+ containing salts and citric acid in a conventional spray pyrolysis setup. Structure, morphology and size of the produced
material were compared to ZnO material produced by simple spray pyrolysis of zinc nitrates in the same experimental setup.
Using transmission electron microscopy and electron tomography it has been shown that citric acid-assisted spray pyrolysed
material is made up of micron sized secondary particles comprising a shell of lightly agglomerated, monocrystalline primary
ZnO nanoparticles with sizes in the 20–30 nm range, separable by a simple ultrasonic treatment step. |
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