Original Article

Enhanced photocatalytic activity of SnO₂/g-C₃N₄ nanocomposite synthesized using sonochemistry method

¹ Faculty of Physics, Hanoi National University of Education, 136 Xuan thuy, Cau giay, Hanoi, Vietnam
² Faculty of electronics and telecommunications, VNU-University of Engineering and Technology, 144 Xuan thuy, Cau giay, Hanoi, Vietnam

^* e-mail: phund@vnu.edu.vn
^** e-mail: hoanglhsp@hnue.edu.vn

Received: 7 September 2023
Accepted: 9 January 2024
Published online: 9 April 2024

Abstract

The SnO₂/g-C₃N₄ nanocomposite materials were successfully synthesized via the solid reaction and sonochemistry methods. The properties of the obtained product were investigated using several methods: X-ray diffraction, UV-vis diffuse reflectance spectroscopy, and Scanning electron microscope. The photocatalytic properties of the samples were evaluated through the photodegradation of Rhodamine B solution. The results demonstrate that the SnO₂/g-C₃N₄ prepared by the sonochemistry method exhibits higher photocatalytic activity than that prepared by the solid reaction method. This enhanced photocatalytic activity is attributed to the formation of heterostructures between SnO₂ and g-C₃N₄ materials, resulting in the efficient separation of photo-generated electron-hole pairs. Furthermore, the nanocomposite exhibits a larger specific surface area compared to the product obtained through the solid reaction method.