Study on fabrication of Sn-doped ZnO thin films oriented to the application for organic dye degradation catalysts in water environment

Vu Viet Doanh; Nguyen Thu Trang; Le Minh Kiet; Duong Quoc Minh; Trinh Quang Thong; Le Hai Dang

doi:10.51316/jca.2021.043

Authors

Vu Viet Doanh Ha Noi University of Business and Technology
Nguyen Thu Trang Faculty of Chemistry, Hanoi National University of Education
Le Minh Kiet Hanoi National University of Education
Duong Quoc Minh Hanoi National University of Education
Trinh Quang Thong School of Engineering Physics, Hanoi University of Science and Technology
Le Hai Dang Faculty of Chemistry, Hanoi National University of Education

DOI:

https://doi.org/10.51316/jca.2021.043

Keywords:

Sn-doped ZnO thin films, sol-gel, dip-coating, photocatalytic activity, methylene blue

Abstract

In this study, zinc oxide (ZnO) doped with Sn thin films were deposited on the glass substrate at 550 °C by dip-coating technique using the solution synthesized by sol-gel method. The structural, surface morphology, optical and photocatalytic property of thin films were studied. X-ray diffraction (XRD) analysis showed that the Sn-doping greatly changed the microstructure, morphology and optical properties of ZnO films, which may contribute to the enhancement of photocatalytic activity. Additionally, the photocatalytic activity was investigated using methylene blue dye under solar irradiation, with has high UV index from 7 to 8. The results indicated that Sn-doped ZnO had a higher photocatalytic activity and Sn dopant greatly increased the photocatalytic activity of ZnO thin film.

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