The effect of annealing temperature on hydrothermally grown sisal-like ZnO microstructures

被引:0
作者
Azadeh Haghighatzadeh
Mahsa Hosseini
Soheila Haghighi
Marzeh Ataie Dil
机构
[1] Islamic Azad University,Department of Physics
[2] Ahvaz Branch,Department of Physics
[3] Islamic Azad University,undefined
[4] Khouzestan Science and Research Branch,undefined
来源
Journal of the Australian Ceramic Society | 2021年 / 57卷
关键词
Sisal-like architecture; ZnO microrods; X-ray line broadening; Raman spectroscopy; Optical properties;
D O I
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中图分类号
学科分类号
摘要
This study has extensively described the fabrication and characterization of sisal-like ZnO microstructures. HMT aqueous solution containing zinc nitrate tetrahydrate as crystalline zinc source has been utilized to synthesize sisal-like ZnO samples via a controlled hydrothermal route. A variety of characterization techniques including FESEM, XRD, FT-IR, and Raman spectroscopy have been employed to investigate the effects related to varying annealing temperatures on morphological and structural properties. The FESEM observations have revealed a transition from hexagonal microrods to modified microrods and then to pointed microrods for sisal-like ZnO architectures as the annealing temperature increases. XRD results have indicated a considerably high purity for as-synthesized ZnO microstructures. The crystalline quantities of ZnO samples have been estimated using various X-ray line-broadening analysis methods including Debye-Scherrer and Williamson-Hall techniques. UV-Vis DRS measurements have been carried out to study optical properties. Results have shown improved light harvesting related to both enhanced absorption intensities and decreased band-gap energies with the increase of annealing temperatures.
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页码:993 / 1002
页数:9
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