Facile Synthesis of the Novel Ag[1-butyl 3-methyl imidazolium]Br Nanospheres for Efficient Photodisinfection of Wastewaters

Abstract

Ag[1-butyl 3-methyl imidazolium]Br nanospheres were prepared by a coprecipitation method at ambient temperature. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffusion reflectance spectra (DRS), the BrunauerÀEmmettÀTeller (BET) nitrogen adsorption-desorption isotherms, and Fourier transform infrared spectroscopy (FT-IR) analysis methods. The photocatalytic properties were evaluated by degradation of acid blue 92 (AB92) and rhodamine B (RB) dye solutions under visible light and the obtained results were discussed. According to the recycling experiments, the samples could efficiently decrease the concentration of the pollutant after four times of repeated using. To assure the practical capacity, photodegradation of a real wastewater produced in the textile industry was studied under the same conditions and the results indicated that the absorption in all wavelengths reduced impressively by the photocatalytic treatment. Furthermore, the antimicrobrial activity was investigated by photoinactivation of S. aureus bacteria in the visible light and the results implied that the prepared samples were able to prevent the growth of bacteria colonies after the reaction time.

[Cu-Ag2]O–C3N4 nanoframeworks for efficient photodegradation of wastewaters

“…The dominant diffraction peak at 2θ = 27.7°, which can be observed in all the samples, is assigned to the (002) diffraction planes of g-C 3 N 4 and a small diffraction peak at approximately 13° is indexed to the in-plane of tris-triazine units (in-plane of tris-triazine units means in- plane structural packing motif of tristriazine units). 24 As can be seen, the latter peak was surprisingly intensified by decorating the surfaces with CuO nanoparticles. This sharp peak in CuO-NS corresponds to the CuO crystal planes.…”

Preparation of TiO2/Ag[BMIM]Cl Composites and Their Visible Light Photocatalytic Properties for the Degradation of Rhodamine B

“…Silver-halide-included nanomaterials are wonderful self-sensitization photocatalysts for their intriguing electronic, optoelectronic, and photocatalytic properties [19]. Silver-halide with narrow bandgaps can break into Ag 0 with strong surface plasmon resonance effects and excellent electron storage property under light illumination [20].…”

Well-Supported Ag3VO4–AgBr Nanostructures for Visible Light-Driven Treatment of Wastewaters

“…The design and development of new solar energy responsive photoactive materials for remediation purposes have become a major concern in this field. To address this issue, much effort has been devoted to the discovery and preparation of new semiconductors with low band gap energy [13][14][15]. Silver-based semiconductors such as Ag 2 O, Ag 2 S, AgVO 3 , silver halides and Ag 3 VO 4 have exhibited promising catalytic capacity under visible light [14][15][16][17][18][19].…”

“…To address this issue, much effort has been devoted to the discovery and preparation of new semiconductors with low band gap energy [13][14][15]. Silver-based semiconductors such as Ag 2 O, Ag 2 S, AgVO 3 , silver halides and Ag 3 VO 4 have exhibited promising catalytic capacity under visible light [14][15][16][17][18][19]. The formation of silver particles on the surface of derivative composites under visible irradiation, facilitating effective charge trapping, is one of the most discussed reasons for silver-based materials demonstrating superior photocatalytic capacity.…”

“…Coupling these compounds with other photosensitive materials like metal oxides shows a synergistic effect on light absorption and activity. Interestingly, Ag 3 VO 4 , as a recently-developed semiconductor, has been verified to show an extremely high quantum yield in photocatalytic processes around www.prkm.co.uk the wavelengths in the visible region for the removal of wastewaters and O 2 evolution [13][14][15][16][17][18]. During recent years, many composites based on silver orthophosphate, which include narrow and wide band gap compounds (for example AgBr, g-C 3 N 4 , BiMoO 4 , SnO 2 , ZnO, TiO 2 etc.…”