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Effect of hydrothermal growth temperature and time on physical properties and photoanode performance of ZnO nanorods


Al-Zahrani, Asla Abdullah and Zainal, Zulkarnain and Talib, Zainal Abidin and Lim, Janet Hong Ngee and Mohd Fudzi, Laimy and Holi, Araa Mebdir and Sarif @ Mohd Ali, Mahanim (2020) Effect of hydrothermal growth temperature and time on physical properties and photoanode performance of ZnO nanorods. International Journal of Nanoelectronics and Materials, 13 (2). 381 - 400. ISSN 1985-5761; ESSN: 2232-1535


Well aligned zinc oxide (ZnO) nanorods (NRs) on ITO substrate for photoelectrochemical application were synthesized successfully through two steps preparation which consisted of deposition ZnO NPs by sol-gel spin coating at 3000 rpm for 40 sec. then followed by cost-effective simple hydrothermal method. The study investigates the effect of growth temperature and duration on the optical properties, photoconversion efficiency, and morphological structure of ZnO/ITO NRs. The hydrothermal temperature was varied between 80 °C to 120 °C and the growth time between 1 to 5 hours. The results of X-ray diffraction showed that the samples had a single hexagonal phase with a strong (002) preferred orientation. ZnO NRs prepared at 110 °C showed the highest diffraction peak intensity with crystallite size of 30.07 nm which implies the excellent crystallinity obtained at this temperature. FE-SEM proved that the temperature and growth time critically affect the diameter and the length of NRs. Photocurrent density of 0.337 mA/cm2 at +0.5 V vs Ag/AgCl reference electrode shown by ZnO NRs photoelectrode prepared at 110 °C for 4 hours which is about 8 times greater than ZnO nanoparticles.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
Publisher: Universiti Malaysia Perlis
Keywords: Hydrothermal method; Hydrothermal growth temperature; Growth time; ZnO nanorods
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 14 Dec 2021 22:53
Last Modified: 14 Dec 2021 22:53
URI: http://psasir.upm.edu.my/id/eprint/88611
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