Photocatalytic activity of Ag-Ag3PO4/Cellulose aerogel composite for degradation  of dye pollutants under visible light irradiation

Nguyen Thi Hoa; Nguyen Trung Tien; Le Hong Phong; Vu Van Tai; Pham Xuan Nui

doi:10.51316/jca.2021.062

Authors

Nguyen Thi Hoa Department of Chemical Engineering, Hanoi University of Mining and Geology, 18-Vien Street, Duc Thang Ward, Bac Tu Liem, Hanoi, Vietnam Author
Nguyen Trung Tien Department of Chemical Engineering, Hanoi University of Mining and Geology, 18-Vien Street, Duc Thang Ward, Bac Tu Liem, Hanoi, Vietnam Author
Le Hong Phong Department of Chemical Engineering, Hanoi University of Mining and Geology, 18-Vien Street, Duc Thang Ward, Bac Tu Liem, Hanoi, Vietnam Author
Vu Van Tai Department of Chemical Engineering, Hanoi University of Mining and Geology, 18-Vien Street, Duc Thang Ward, Bac Tu Liem, Hanoi, Vietnam Author
Pham Xuan Nui Department of Chemical Engineering, Hanoi University of Mining and Geology, 18-Vien Street, Duc Thang Ward, Bac Tu Liem, Hanoi, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2021.062

Keywords:

Photocatalyst, Ag-Ag3PO4/Cellulose aerogel, photodegradation, dye pollutants

Abstract

In this research, Ag-Ag₃PO₄/Cellulose aerogel composite was synthesized using hydrothermal reduction and freeze-drying methods. By combining the photocatalytic activity of the semiconductor Ag-Ag₃PO₄ and cellulose aerogel synthesized from agricultural waste sources, the synthesized Ag-Ag₃PO₄/Cellulose aerogel composite has overcome the disadvantages of pure Ag₃PO₄ and significantly improved the photocatalytic activity. Structural characteristics, morphology, surface area of the materials were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), N₂ adsorption-desorption and UV–vis diffuse reflectance spectroscopy (UV-vis DRS) methods. From the obtained results, composite has narrow bandgap energy (2.275 eV) and excellent catalytic performance in the photodegradation of dye pollutants (99% MB and 77% RY 145 degraded after 4 h, and only a minor change in the efficiency observed after four consecutive tests). It demonstrates the development of new catalysts made from agricultural waste sources that show high stability, ease of fabrication and can operate in natural light for environmental remediation.

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