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Journal of Nanostructures، جلد ۱۵، شماره ۳، صفحات ۸۲۰-۸۳۰
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عنوان انگلیسی Synthesis of ZnO Nanorods through Hydrothermal Techniques: A Study of Optical Properties and Gas Detection Performance
چکیده انگلیسی مقاله The research investigates an optimized hydrothermal synthesis process for zinc oxide (ZnO) nanorods which aims to enhance both optical properties and gas sensing capabilities by regulating the morphology creation. ZnO, a wide bandgap (3.33 eV) n-type semiconductor with strong exciton binding energy (60 meV), offers exceptional chemical stability, photo corrosion resistance, and cost-effectiveness for various electronic and optoelectronic applications. The researchers base their investigation of ZnO nanorod synthesis conditions against structural developments by performing extensive characterization tests. X-ray diffraction tests established the hexagonal wurtzite crystal structure contained high crystallinity and scanning electron microscopy showed perfectly arranged nanorods that reached heights of 690 nm and maintained diameters between 50-100 nm. The UV-visible spectroscopy measurements showed high absorption in the UV range and scientists calculated an optical bandgap of 3.4 eV which establishes quantum confinement. Laboratory experiments revealed the nanorods possessed excellent selectivity features for gases where reducing agents (using NH₃) reacted faster (25 seconds for 10 ppm) than oxidizing agents (using NO₂ at 45 seconds for 10 ppm). The findings from this study enable better understanding of how ZnO nanostructure morphology affects performance and enable the development of new advanced optoelectronic and photocatalytic and gas sensing technologies. Future technological advancements in flexible electronics and environmental monitoring and photonic devices require improved visible light absorption and recovery time which researchers can boost through defect engineering and doping methods as well as structural modifications.
کلیدواژه‌های انگلیسی مقاله bandgap,Gas sensing,Hydrothermal method,Optical properties,ZnO nanorods
نویسندگان مقاله Haider J. Hassan |
University of Wasit, College of Education for Pure Sciences, Department of Physics, Wasit, Iraq

Ali A. Jaber |
University of Wasit, College of Education for Pure Sciences, Department of Physics, Wasit, Iraq

Ahmed Thamer |
Wasit University, College of Science, Department of physics, Wasit, Iraq

نشانی اینترنتی https://jns.kashanu.ac.ir/article_114862_e8d0a0f60467b68c653d0ed5371f14aa.pdf
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