Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5827
Title: Zinc oxide and zinc hydroxide formation via aqueous precipitation: Effect of the preparation route and lysozyme addition
Authors: Top, Ayben
Çetinkaya, Hayrullah
Top, Ayben
Çetinkaya, Hayrullah
Izmir Institute of Technology. Chemical Engineering
Keywords: Composite materials
Electron microscopy
Fourier transform infrared spectroscopy
Powder diffraction
Precipitation
Issue Date: Nov-2015
Publisher: Elsevier Ltd.
Source: Top, A., and Çetinkaya, H. (2015). Zinc oxide and zinc hydroxide formation via aqueous precipitation: Effect of the preparation route and lysozyme addition. Materials Chemistry and Physics, 167, 77-87. doi:10.1016/j.matchemphys.2015.10.013
Abstract: Aqueous precipitation products of Zn(NO3)2 and NaOH obtained by changing the method of combining the reactants and by using lysozyme as an additive were investigated. In the case of single addition method, octahedral ε-Zn(OH)2 and plate-like β-Zn(OH)2 structures formed in the absence and in the presence of lysozyme, respectively. Calcination of these Zn(OH)2 samples at 700 °C yielded porous ZnO structures by conserving the template crystals. When zinc source was added dropwise into NaOH solution, predominantly clover-like ZnO crystals were obtained independent of lysozyme addition. Mixed spherical and elongated ZnO morphology was observed when NaOH was added dropwise into Zn(NO3)2 solution containing lysozyme. Lysozyme contents of the precipitation products were estimated as in the range of ∼5-20% and FTIR indicated no significant conformational change of lysozyme in the composite. These results suggest that lysozyme-ZnO/Zn(OH)2 composite materials may have a value as an antibacterial material.
URI: https://doi.org/10.1016/j.matchemphys.2015.10.013
http://hdl.handle.net/11147/5827
ISSN: 0254-0584
1879-3312
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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