Open AccessSynthesis of Ag-TiO2/perlite composite for the photodegradation of methylene blue under solar light irradiation
Author(s) -
Pham Xuan Nui,
Nguyễn Thị Hòa,
Nguyen Thi Cam Tien,
Lingyu Tai,
Trần Thị Văn Thi
Publication year - 2020
Publication title -
vietnam journal of catalysis and adsorption
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2020.068
Subject(s) - photodegradation , photocatalysis , perlite , materials science , methylene blue , diffuse reflectance infrared fourier transform , scanning electron microscope , irradiation , nuclear chemistry , visible spectrum , desorption , adsorption , chemical engineering , photochemistry , chemistry , composite material , catalysis , optoelectronics , organic chemistry , physics , nuclear physics , engineering
In this research, photocatalytic materials of TiO2, Ag-TiO2, Ag-TiO2/perlite were synthesized by the sol-gel method. By combining the photocatalytic activity between Ag-TiO2 and Perlite mineral, the Ag-TiO2/perlite composite has overcome the disadvantages of pristine TiO2, such as high band gap energy, low light utilization and easy recombination of electrons and holes. The synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption-desorption isotherm, UV-vis diffuse reflectance spectroscopy (UV-vis DRS). The photocatalytic activity of the samples was tested for degradation of methylene blue (MB) under solar light irradiation. Photodegradation studies revealed a 95% removal of MB dye via the synthesized Ag-TiO2/perlite after 150 min of irradiation. Reusability of this hybrid photocatalyst system was tested and only a 3% decrease was observed after four cycles.
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