Hydrothermal zinc oxide nanowire growth with different zinc salts

Akgun, Mehmet Can
Afal, Aysegul
Ünalan, Hüsnü Emrah
The effect of the use of different zinc salts as zinc sources during hydrothermal growth of zinc oxide nanowires was systematically investigated. Change in the temperature, pH, and transmittance of the growth solutions prepared with three different zinc salts was monitored and used to provide a broad explanation to the effect of the salt. In addition to conventional heating process, microwave heating of the growth solutions was also performed, and differences in the ZnO nanowires synthesized through both heating methods were examined. It was found that ionization of zinc in growth solutions is influencing the formation of ZnO nanowires leading to growth with different aspect ratios, and zinc acetate dihydrate salt allows the synthesis of nanowires with the highest aspect ratio.


Hydrothermal zinc oxide nanowire growth using zinc acetate dihydrate salt
AKGUN, Mehmet Can; Kalay, Yunus Eren; Ünalan, Hüsnü Emrah (2012-06-01)
Hydrothermal approach is widely used for the synthesis of zinc oxide (ZnO) nanowires. Zinc nitrate hexahydrate, zinc acetate and zinc chloride are three common salts that are used for synthesis. Among these, zinc nitrate hexahydrate is primarily used in many studies and zinc chloride is preferred for electrodeposition. In this work, zinc acetate dihydrate salt is used for the growth of ZnO nanowires and the effects of time, temperature, solution concentration and concentration ratios of the precursor chemic...
Defect-induced room temperature ferromagnetism in B-doped ZnO
Yilmaz, S.; Nisar, J.; Atasoy, Y.; McGlynn, E.; Ahuja, R.; Parlak, Mehmet; BACAKSIZ, EMİN (2013-05-01)
ZnO microrods were grown on glass substrates by the spray pyrolysis method and boron was doped into the ZnO microrods by diffusion. X-ray diffraction results confirmed that the incorporation of B leads to a slight reduction in the deposit texture. Scanning electron microscopy measurements showed that the morphology of the ZnO samples changed from a microrod to nanocrystalline structure with B-doping. Photoluminescence data indicate that B-doping leads to a relative increase of the unstructured green band in...
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The aim of this study was to investigate the microstructure, mechanical and biological properties of biphasic hydroxyapatite--Tricalcium phosphate (HT) and HT substituted with constant fluoride (F−) and varying strontium (Sr2+) amounts. All the samples were synthesized via precipitation method and sintered at 1100°C for 1 h. It was observed that the relative density of the sintered strontium and fluoride doped HT slightly increased. For microstructural analysis, X-ray diffraction (XRD), scanning electron m...
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In this study, aerobic biological treatment of opium alkaloid wastewater and the effect of gamma preirradiation and fenton’s oxidation were investigated. First, the biodegradability of alkaloid wastewater was investigated by batch reactors and wastewater was found to be highly biodegradable providing 83 90 % COD degradation. In order to evaluate the effect of irradiation, original wastewater and irradiated wastewaters (40 & 140 kGy) were compared by means of BOD5/COD values and through aerobic batch experi...
Hydrothermal treatment of perlite with caustic soda to produce metal silicate solutions
Yilmaz, S; Yucel, H (2001-11-01)
The effects of temperature, concentration of caustic soda and liquid to solid ratio on hydrothermal treatment of perlite with caustic solution to produce metal silicate solutions were investigated. The reaction was carried out in laboratory autoclave of 1 L capacity over a range of experimental conditions. The treatment time was kept constant at I hour. The chemical compositions of liquid products were analyzed by standard wet chemical methods. The results indicated that, under favorable conditions, aqueous...
Citation Formats
M. C. Akgun, A. Afal, and H. E. Ünalan, “Hydrothermal zinc oxide nanowire growth with different zinc salts,” JOURNAL OF MATERIALS RESEARCH, pp. 2401–2407, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47448.