کلیدواژهها
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Photodegradation, Acid Blue 92 (AB92) azo dye, E. coli, Nanoparticles, Fluorapatite, Carboxymethyl
cellulose, Silver orthophosphate-bromide
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چکیده
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Visible light photoactive silver[orthophosphate-bromide] loaded on fluorapatite (FA) and carboxymethyl
cellulose (CMC) supports were prepared by an ionic liquid-assisted precipitation method and
used as effective light driven heterogeneous systems for removal of Acid Blue 92 (AB92) azo dye and E.coli
Gram-negative bacteria from the wastewaters. The prepared samples were characterized by X-ray diffraction
(XRD) powder, Diffuse Reflectance Spectroscopy (DRS), Furrier transform infrared spectroscopy (FTIR),
Scanning Electron Microscopy (SEM), and nitrogen adsorption-desorption isotherms (BET). The XRD
patterns well proved the formation of Ag3PO4 and AgBr photocatalytic crystalline phases of the nanostructures.
Besides, the SEM images demonstrated that the photoactive particles were homogenously dispersed on
the surface and the average size of the particles is below 90 nm. The antibacterial experiments showed that the
products particularly the FA-based photocatalyst can also be utilized as efficient antimicrobial agents.
According to the results, the CMC-based photocatalyst was more active during the first time of using while
the other one was determined to be promising enough during the recycling tests.
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