Use of Barium Chromate in Photocatalytic Degradation of Eosin Yellow

doi:10.7598/cst2015.1069

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…This hydroxyl radical will oxidize Hg-picrate, which may ultimately degrade the products. Gupta et al (18) reported that hydroxyl radical take part as an active oxidizing species in the degradation of compounds, and observed that in the presence of hydroxyl radial quencher the reaction was appreciably reduced (19) . These reactions were observed by taking different volumes of alcohols (e.g.…”

Section: Effect Of Radical Quenchermentioning

confidence: 99%

Photocatalytic decolorization of mercuric picrate in the presence of zinc oxide

Shukla¹

2020

IJST

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Objectives: This study was undertaken to examine the decolorization of mercuric picrate with ZnO as a photocatalyst. Methodology: The photo catalytic decolorization of mercuric picrate in the presence of heterogeneous semiconductor in the aqueous solution has been investigated. The progress of the reaction was checked by Shimadzu 1600 UV visible spectrophotometer at different time intervals. The effect of various operational parameters was studied such as the effect of mercuric picrate concentration, amount of photo catalyst, effect of light intensity, effect of band gap and effect of pH on the solution of mercuric picrate. The study on the effect of radial quenchers such as methanol and ethanol were used. Findings: The optimum conditions were obtained as pH =5.0, [Hg-picrate] = 6 ×10-5 M, amount of ZnO = 250 mg, light intensity =7.61 mWcm -2 . The rate constent ontained was k= 7.30 × 10-3 min -1 . The reaction proceeded through oxidation by hrdroxyl radial confirmed by scavenger. Zinc oxide is effective photocatalyst for decolorization of Hg-picrate. Other semiconductors like ZnS, CdS as well as PbS are not capable to carry out photoreaction. A tentative mechanism for this reaction has been proposed. Novelty: Mercuric Picrate is a probably explosive toxic substance. Hence a safe way to decompose this molecule into smaller and nonexplosive ways is of crucial importance. Photocatalysis is well established method. However, decomposition of mercuric picrate to a safe level can be achieved by this method.

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Section: Effect Of Radical Quenchermentioning

confidence: 99%

Photocatalytic decolorization of mercuric picrate in the presence of zinc oxide

Shukla¹

2020

IJST

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“…The textile industry uses this colorant for these strong coloring properties and its bright color. Eosin Y has a biological degradation once it reaches the environment and can be toxic to insects, also for aquatic life, because of its stability [24,25].…”

Section: Introductionmentioning

confidence: 99%

Conformational modeling of the system pollutant/three-dimensional poly (2-hydroxyethyl methacrylate) (PHEMA) in aqueous medium: a new approach

et al. 2018

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The polluted water, mixture of chemicals and dyes, discharged by various textile and paper industries, is a serious problem for the environment, peculiarly the water. Dyes are stable to light, heat and oxidizing agents and are usually biologically non-degradable, which makes them complicated environmental pollutants. To examine the removal of dye from water, a three-dimensional poly (2-hydroxyethyl methacrylate) (PHEMA) and eosin Y were used, respectively, as a dye retention support and pollutant. The study of the interaction between dye and a hydrophilic polymer networks by the conformational modeling using computer software represents the goal of the present work. Both the swelling and ultraviolet-visible spectrophotometry studies show that the pollutant was well retained by the porous polymer network PHEMA. The conformational study of the system composed of polymer network/dye shows that the interaction of the oxygen (O) and bromine (Br) of eosin Y with the hydrogen (H) of the PHEMA depends on the polymer porosity that was varied by the cross-linking rate of the three-dimensional polymer networks. The results obtained by this work can be applied to improve the retention efficiency of such material for use in wastewater application.

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Use of Barium Chromate in Photocatalytic Degradation of Eosin Yellow

Cited by 2 publications

References 16 publications

Photocatalytic decolorization of mercuric picrate in the presence of zinc oxide

Photocatalytic decolorization of mercuric picrate in the presence of zinc oxide

Conformational modeling of the system pollutant/three-dimensional poly (2-hydroxyethyl methacrylate) (PHEMA) in aqueous medium: a new approach

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