Synthesis of type-II SrTiO3/ZnO heterojunction material for photocatalytic degradation of methylene blue under sunlight

Nguyen Thi Viet Nga; Le Thi Thanh Lieu; Dinh Thi Thu Hien; Tran Van Thanh; Nguyen Anh Hong; Do Hoang Chinh; Nguyen Van Kim

doi:10.62239/jca.2024.028

Synthesis of type-II SrTiO₃/ZnO heterojunction material for photocatalytic degradation of methylene blue under sunlight

Authors

Nguyen Thi Viet Nga Faculty of Education, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh
Le Thi Thanh Lieu Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh
Dinh Thi Thu Hien Faculty of Education, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh
Tran Van Thanh Faculty of Education, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh
Nguyen Anh Hong Faculty of Education, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh
Do Hoang Chinh Faculty of Education, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh
Nguyen Van Kim Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh

DOI:

https://doi.org/10.62239/jca.2024.028

Keywords:

SrTiO3/ZnO, photocatalyst, methylene blue, sunlight

Abstract

This work presents the synthesis of ZnO, SrTiO₃, and SrTiO₃/ZnO catalysts by simple hydrothermal method. The obtained materials were characterized by X-Ray Diffraction (XRD), Fourier transformation infrared spectra (FT-IR), scanning electron microscopy (SEM), Energy-dispersive X-ray (EDS) and element mapping images, Photo-luminescence spectroscopy (PL), and Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS). The photocatalytic activity of the synthesized materials was assessed by degradation of methylene blue (MB) under sunlight. In particular, SrTiO₃/ZnO displayed outstanding photocatalytic activity compare to individual catalysts. Our findings have revealed an improvement of photogenerated charge separation and the dominating role of the holes and electrons in the degradation of MB.

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Published

30-06-2024

Issue

Vol. 12 No. 2 (2024): June

Section

Full Articles

How to Cite

Synthesis of type-II SrTiO3/ZnO heterojunction material for photocatalytic degradation of methylene blue under sunlight. (2024). Vietnam Journal of Catalysis and Adsorption, 12(2), 37-42. https://doi.org/10.62239/jca.2024.028