Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 30, Issue 45, Pages 100785-100798Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-023-29429-1
Keywords
Indium (In3+)-doped Ag3PO4; Visible light photoactivity; Ag3PO4 stabilization; Toxic dyes removal
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Indium (III)-doped Ag3PO4 catalysts (In-AgP) were prepared and characterized. The photocatalytic activity of the catalysts under visible light was investigated, and it was found that the indium-doped samples exhibited higher activity and selectivity towards methyl orange degradation. The catalyst also showed excellent recycling stability.
Indium(III)-doped Ag3PO4 (In-AgP) catalysts at different weight percentages were elaborated by co-precipitation and subjected to XRD, SEM, UV-vis DRS, and FTIR characterization. The prepared catalysts were of spherical morphology and their diameters depends on doping dosage. The whole materials crystallize in a centered cubic system with a slight dissimilation in the positions of the characteristic peaks as a function of indium dosage. The photocatalytic performance of the catalysts under visible light was investigated in the photocatalytic degradation of anionic dye (methyl orange (MO)) and cationic dye (auramine O (AO)) in moderate acid, neutral, and basic pH conditions. Results showed more selectivity to MO than AO. Furthermore, indium-doped samples are more active in the acidic medium than the pure Ag3PO4 (AgP), and 10%In-AgP catalyst presents the highest activity. The degradation efficiency reached 99 % in 60 min for MO and in 180 min for AO. In addition, a high recycling stability was achieved and the catalyst retains its degradation capacity above 99 % after five cycles.
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