Microwave-assisted hydrothermal synthesis and characterization of ZnO nanorods.
For the purpose of this study, the nanorods of zinc oxide were synthesized by rapid microwave-assisted hydrothermal route. The microstructure and surface morphology of the sensitized nanorods were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and transmission electron microscope (TEM). XRD results indicate that synthesized ZnO nanorods have wurtzite phase. The calculated value of the particle size using Debye Scherrer formula and Williamson Hall plot was found to be 20-28 nm and 35.3 nm, respectively. Low uniformity distribution of rod-like morphology (60-80 nm in diameter and average length about 250 nm) are seen in TEM micrographs. The optical parameters of the prepared ZnO nanorods have been calculated using Kubeleka-Munk approach for the UV-vis diffuse reflectance spectrum. It is found that the direct transition optical band gap of the studied sample is 3.17 eV. The direct current electrical conductivity (σ) was increased from 6.7×10(-8) to 3×10(-7) Ω(-1) cm(-1) with increasing the temperature (T) in the range (300-425 K). The obtained variation of σ with T refers that the conductivity mechanism is controlled by thermally activated process.
Advanced Technology Research & Application Center, Mersin University, Ciftlikkoy Campus, TR-33343 Yenisehir, Mersin, Turkey; Department of Energy Systems Engineering, Mersin University, Tarsus Faculty of Technology, 33480 Mersin, Turkey.
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K
Ocakoglu
Department of Basic Engineering Science, Faculty of Engineering, Menofia University, Shebin El-Kom, Egypt. Electronic address: shehab_mansour@yahoo.com.
Sh A
ShA
Mansour
Advanced Technology Research & Application Center, Mersin University, Ciftlikkoy Campus, TR-33343 Yenisehir, Mersin, Turkey.
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S
Yildirimcan
Department of Physics, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
Ahmed A
AA
Al-Ghamdi
Department of Physics, Faculty of Science, Suez Canal University, Ismailia, Egypt.
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F
El-Tantawy
Department of Physics, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Physics, Faculty of Science, Firat University, Elazig 23169, Turkey.
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F
Yakuphanoglu
Diffuse reflectance; Microwave-assisted hydrothermal; Optical properties; ZnO nanorods