Morphology-controlled synthesis of nanostructured zinc hydroxide fluoride via a microwave-assisted ionic liquid route |
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Institution: | 1. Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA;2. Institute for Bionanotechnology in Medicine, Department of Medicine, Northwestern University, Chicago, IL, USA;3. Department of Materials Science and Engineering, Department of Chemistry, Northwestern University, Evanston, IL, USA;4. Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany;5. Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA, USA;1. New Technologies – Research Centre, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic;2. Department of Physics and NTIS – European Centre of Excellence, University of West Bohemia, Czech Republic |
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Abstract: | Zinc hydroxide fluoride (Zn(OH)F) with multiform morphologies such as flower-like particles, pumpkin-like aggregates, and hollow orange-like aggregates are prepared by a microwave-assisted ionic liquid method. During synthesis, microwave irradiation accelerates the reaction rate and shortens the reaction time. 1-Butyl-3-methylimidazolium tetrafluoroborate (Bmim]BF4]) or 1-2-hydroxylethyl-3-methylimidazolium tetrafluoroborate (C2OHmim]BF4]) is used as both reactant and template. Experimental results indicate that the morphology evolution of Zn(OH)F is mainly controlled by the concentration of zinc acetate solution. A possible mechanism underlying the formation of nanostructured Zn(OH)F with diverse morphologies is proposed. Furthermore, nanoporous ZnO is obtained by the thermal decomposition of as-prepared Zn(OH)F in air, and the morphology is well retained. |
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Keywords: | Ionic liquid Microwave irradiation Zinc hydroxide fluoride Morphology evolution Mechanism |
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