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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The authors acknowledge support from the European Union under the Framework 6 program under a contract from an Integrated Infrastructure Initiative (Reference 026019 ESTEEM).
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11051_2009_9630_MOESM1_ESM.mpg
A 3D discrete tomography reconstructed movie showing a secondary spherical structure built up of primary ZnO nanoparticles produced by CA-assisted spray pyrolysis. (MPG 6543 kb)
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Turner, S., Tavernier, S.M.F., Huyberechts, G. et al. Assisted spray pyrolysis production and characterisation of ZnO nanoparticles with narrow size distribution. J Nanopart Res 12, 615–622 (2010). https://doi.org/10.1007/s11051-009-9630-1
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DOI: https://doi.org/10.1007/s11051-009-9630-1