Abstract
The combination of chitosan-biochar (CS-biochar) adsorbents and ZnO, Ag3PO4 photocatalysts is a promising scheme for organic pollutant removal. Hence, a novel efficient Ag3PO4/ZnO/CS-biochar adsorption–photocatalyst is successfully synthesized and characterized using powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FTIR), energy disperse spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and N2 adsorption–desorption. Photocatalytic experiments have shown that the Ag3PO4/ZnO/CS-biochar with higher adsorption and photocatalytic activity. The synergetic effects of CS-biochar, ZnO and Ag3PO4 have promoted organic pollutant adsorption, and all the Ag3PO4/ZnO/CS-biochar composites with different Ag3PO4 content exhibit excellent photocatalytic activity for MB and RhB degradation. The degradation efficiency of 29 wt %-Ag3PO4/ZnO/CS-biochar composite photocatalyst (0.5 g/L) for MB and RhB (20 mg/L) reaches 99% within ≈60 min, respectively. Excellent photocatalytic performance and recyclability, Ag3PO4/ZnO/ CS-biochar composite is expected to be an important material for solving environmental crisis. Finally, a possible photocatalytic degradation mechanism is proposed.
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This work was supported by Natural Science Foundation of Tianshui city (2020-FZJHK-3111, 2021-FZJHK-1302), College Teachers Innovation Fund project of Gansu Province (2023B-142) and the Scientific Research Project of Gansu Province (21JR11RE038).
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Xiao-fang Li, Li, Rx. & Feng, Xq. Efficient Adsorption and Photocatalytic Degradation of Organic Pollutant by Ag3PO4/ZnO/Chitosan–Biochar Composites. Russ. J. Inorg. Chem. 68, 1386–1398 (2023). https://doi.org/10.1134/S0036023623601307
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DOI: https://doi.org/10.1134/S0036023623601307