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A study of spectro photo metric determination of ion association complex, formed by anionic surfactant sodium dodecyl by using crystal violet as a cationic dye in region Bilaspur (Chhattisgarh)
摘要： Surface active agents (SAA) with negative charge of polar group are named as anionic compounds. They are the main constituent of most products containing synthetic surfactants. Anionic surfactants after use are passed into sewage-treatment plants, where they are partially degraded and adsorbed to sewage sludge. Therefore, it is important to investigate the environmental fate of those classes of compounds in more details. A sensitive, selective and inexpensive method for the determination of anionic surfactants in waste water of sewage has been developed. This research involves determination the concentration of anionic surfactants sodium dodecyl sulphate (SDS) with use appropriated analytical techniques in environmental samples. The official methodology for determination of anionic surfactant (AS) in liquid samples is based on the ion-pair reaction of these analysts’ compounds with crystal violet (CV) and an extraction with organic solvent benzene. In an organic solvent benzene anionic surfactant SDS and a cationic dye CV forms an ion association complex. This ion associate exhibits an absorption maximum wave length (λ max) at 560 nm. The method proposed has been found much easier, accurate and rapid, and there is no use of any toxic chemicals.
关键词： crystal violet,Anionic surfactant,Surface active agents,Sodium dodecyl sulphate
更新于2025-09-10 09:29:36
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Improvement of photocatalyst properties of magnetic NPs by new anionic surfactant
摘要： In this research, Fe3O4 NPs was synthesized by co- precipitation approach. Then SiO2 shell was grown on the Fe3O4 core. Synthesized NPs were characterized by means of XRD, FTIR, VSM, TGA, SEM and TEM. The magnetic properties of core and core-shell NPs was 74 and 42 emu/g, respectively. The TEM picture of core-shell was showed thickness shell of SiO2 on the Fe3O4 NPs. The size of this shell about 2.5nmWhich caused the core magnetic property to be well preserved. Photocatalyst activity of the synthesized NPs was investigated by using methyl orange (MO) and methylene blue (MB) as pollutant at different pH. For first time sodium citrate was used to improvement photo- degradation. The Fe3O4 indicated good photocatalyst activity for photo-degradation and it’s activity was considerably increased after SiO2 shell growth.
关键词： Fe3O4@SiO2,Photocatalyst,Tri sodium citrate,Fe3O4,Anionic surfactant
更新于2025-09-04 15:30:14