4.4 Article

Effective Multi Toxic Dyes Degradation Using Bio-Fabricated Silver Nanoparticles as a Green Catalyst

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APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
卷 195, 期 6, 页码 3872-3887

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SPRINGER
DOI: 10.1007/s12010-022-03902-y

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Kalanchoe brasiliensis; Silver nanoparticles; Photocatalyst; Dye degradation; Green synthesis

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In this study, silver nanoparticles prepared from Kalanchoe brasiliensis leaves extract were used for the photocatalytic degradation of dyes. The results showed that the green catalyst derived from Kalanchoe brasiliensis exhibited excellent stability and high degradation efficiency, making it a potential candidate for the treatment of industrial dye effluent.
Herein, we reported the preparation and characterization of silver nanoparticles from Kalanchoe brasiliensis leaves extract and their application in the photocatalytic degradation of Aniline Blue, Toludine Blue, Congo Red, Indigo Carmine, Auramine O, and Pyronin Y dyes. The synthesis of Kalanchoe brasiliensis extract derived silver nanoparticles (KK-AgNPs) was well characterized by several techniques. The surface plasma resonance (SPR) peak of 17 nm sized KK-AgNPs occurred at 445 nm, and the KK-AgNPs were stable for more than five months. Finally, KK-AgNPs were used as a green catalyst for the photocatalytic degradation of the above-mentioned dyes. Interestingly, the KK-AgNPs green catalyst decolorized all six dyes and their mixture. We found high catalytic efficiency up to 86%. Moreover, we used the KK-AgNPs green catalyst to degrade industrial dye effluent water. We also discussed the possible mechanism for the photocatalytic degradation of dyes.

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