Synthesis of AgCl nanoparticles in ionic liquid and their application in photodegradation of Orange II (original) (raw)
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Silver nanostructures (silver nanopaerticles e.g AgNPs and silver nanoplates e.g AgNPls) of various sizes and shapes were prepared using different reducing agents in ionic liquid media. The ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, which acts both as a cosolvent and a surfactant, was used to synthesize smaller and more ordered silver nanostructures. Spherical nanoparticles (silver NPs) were prepared using sodium borohydride as a reducing agent. On the other hand, plate-shaped silver nanostructures (silver NPls) were prepared using hydrazine hydrate as a reducing agent. The as-synthesized silver nanostructures were characterized by scanning electron microscopy, powder X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy, and Brunauer-Emmett-Teller analysis. The resulting materials were applied for the photodegradation of methyl orange under visible light irradiation. Because of their large surface area, the silver NPs showed better photocatalytic activity compared with that of Ag NPls.
Oriental Journal of Chemistry, 2020
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Photocatalytic removal of organic pollution such as waste colored dyes was a promising technique for environment technique. However, effective photocatalysts were needed to enhance the photocatalytic efficiency. Ag/AgCl was regarded as high performance catalyst for photocatalytic degradation. Ag/AgCl nanoparticles were biochemically prepared with metabolin of living fungi which was used as reductant and characterized by X-Ray diffraction (XRD), UV-visible spectroscopy and transmission electron microscopy (TEM). The Ag/AgCl nanoparticle composites showed spherical aggregation shape with an average size of about 3-5 nm which is well inside the quantum regime. The UV-visible study showed that Ag/AgCl nanoparticles had strong visible light absorption and exhibited excellent visible-light-driven photocatalytic performance. Photocatalytic results indicated that the obtained Ag/AgCl nanoparticles were suitable for photocatalytic removal of RhB dye under visible light irradiation. The excellent photocatalytic activities could be attributed to the quantum size nanoparticles and the Plasmon resonance of Ag/AgCl composites. OPEN ACCESS Materials 2015, 8 2044
Degradation of Disperse Orange 3 -an azo dye by silver nanoparticles
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The degradation of Disperse Orange 3, an azo dye, by silver nanoparticles which has been synthesized using green methodology has been described. These silver nanoparticles have been found to be potential catalysts for the degradation of Disperse Orange 3 in the presence of sodium borohydride (NaBH4). The rate constant (k) for the catalyzed and uncatalyzed reaction has been determined. The spectrum of catalyzed reaction shows a sudden decay in the absorbance value (A) confirming the catalyst effect of Ag nanoparticles. In absence of silver nanoparticles the rate of degradation of dye has been found to be negligible.
Heliyon, 2019
The present study includes the Azadirachta indica (neem) induced Silver nanoparticles (AgNPs) by green synthesis as reducing and capping agent. Synthesized AgNPs were characterized by different instrumental techniques such as XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), Zetasizer, UV-Visible and FT-IR (Fourier Transformation Infra-Red) spectroscopy. The result of XRD reveals that nanoparticles were crystalline in nature and pure, stability was determined by Zeta potential and SEM, TEM analysis indicates that AgNPs was monodisperse in a spherical shape with average size 9 nm. These synthesized AgNPs were applied as the catalyst in the degradation process of Methyl Orange (MO) and wastewater samples in presence of peroxodisulphate (PDS). Effect of different experimental conditions such as initial pH, concentration of PDS, Dye, and AgNPs was studied on the degradation process. The obtained kinetic result shows that AgNPs/PDS syste...
In this paper, we report degradation of methyl orange, an azo dye through silver nanoparticles, with the help of UV–Visible spectroscopy. These silver nanoparticles have been found to act as a potential catalyst for the degradation of methyl orange in the presence of sodium borohydride. Rate constants for the catalyzed and uncatalyzed reaction have been determined. The catalyzed reaction spectrum shows a sudden fall in absorbance value confirming catalytic effect of Ag nanoparticles. No significant change in absorbance in case of uncatalyzed reaction is observed, indicating very slow reduction rate of methyl orange.
Bioinorganic Chemistry and Applications, 2016
The photocatalytic degradation of the chemical dye AZO and dye effluents in different time duration has been investigated using biologically synthesized silver nanoparticles. Dye industry effluents and AZO dye undergo degradation to form harmless intermediate and colourless products following irradiation by UV and solar light in the presence of green synthesized silver nanoparticles. The degree of degradation was tested under the experimental conditions such asPH, temperature, and absorbance of the dye in UV and solar light was measured. The degradation was higher in the UV light source than in the solar light source. Green synthesized silver nanoparticles in the UV light source were found to expedite the dye degradation process.
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