Sonochemical synthesis of silica supported iron nanoparticles for enhanced removal of Cr(VI) species from aqueous medium

Shukla, Neelam; Debnath, Abhijit; Banerjee, Sushmita

doi:10.1007/s41204-021-00171-8

Cited by 6 publications

(1 citation statement)

References 52 publications

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“…As the rice husk is been major waste it is been burnt or dumped in the sites which gives way to more and more pollution. Nano-adsorbents are a developing area in science that is applied in filthy water for the cleaning-up process and the difficulty lies in the elimination of these substances from a fluid medium due to its small size [19,20]. In the present trend, magnetic nanoparticles (MNPs) can be used to overcome this flaw by mixing these NPs with other adsorbents that can be potentially removed by adsorbing using an external magnet.…”

Section: Introductionmentioning

confidence: 99%

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: Isotherm and kinetic studies

Ramesh,

Deivayanai,

Yaashikaa

et al. 2023

Preprint

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Disposing industrial wastewater and by-products from numerous segments has recently increased its demands in the ecological, methodological, economic, technological, and community spheres where the dispersed water isn’t treated before release. Rice husk is a waste agro field product from rice milling, an abundant source of silica and many other minerals. Rice husk ash is generated by combustion and deep burning out techniques at 600℃. To make 100% pure silica xerogels from RHA, a process involving alkaline separation accompanied by precipitation with acid was performed. Silica-coated Fe3O4 magnetic nanoparticles were produced via microwave practice and used for the complete elimination of Cr(IV) ions from water samples that is lab prepared solutions. The synthesized magnetic nanoparticles were characterized using Scanning electron microscopy (SEM) showing the structure of formed particles, X-ray diffraction (XRD) owns amorphous nature, Energy-dispersive X-ray (EDX) spectroscopy showing peaks of silica 45.36%, Ferrous 49.07%, and oxides in traces. Fourier- transform infrared spectroscopy (FT-IR), Dynamic Light Scattering (DLS), and Zeta Potential. Uniquely the pH value, heat, exposure duration, and dosage all have an impact on the target metal ion has been studied using Atomic Absorption Spectroscopy (AAS) to obtain optimum conditions. Langmuir isotherm seems to be the very greatest fit with the R2 value of 0.9791 and the qm is 102.8 mg/g this study also has great curve fitting in the pseudo-first-order model that supports the top physical adsorption.

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Section: Introductionmentioning

confidence: 99%

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: Isotherm and kinetic studies

Ramesh,

Deivayanai,

Yaashikaa

et al. 2023

Preprint

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Optimized caged silica synthesis with lithium chloride and calcium chloride impregnation for prospective desalination application

Khushnood,

Khan,

et al. 2023

J Porous Mater

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Caged Silica is an inorganic sorbent that is widely employed in a variety of applications, including catalysts, thermal insulation, energy storage batteries, and as an adsorbent in the extraction of fresh water. Researchers have devised several techniques to prepare mono-dispersed caged silica with standard morphology. Template synthesis is quite prominent due to its structural stability and versatility. In this work, we present synthesis of caged silica microsphere via hard template synthesis by employing the process of calcination at 550 • C for 4 hours at the rate of 3 • C/min and subsequent drying. Emulsion polymerization was utilized to develop the polystyrene required in the procedure. This study also looks at how different parameters like silica precursor concentration, surfactant concentration, and catalyst concentration affect silica morphology. It was investigated that caged silica synthesis was optimized at 1.5ml of TEOS, 1.25g of CTAB, 0.1g of PS and 75µl of NH 3 which was confirmed by SEM and TEM analysis. Surface area of caged silica was measured as 448m 2 /g with the stirring rate of 5 minutes. We also impregnated caged silica with 9% of hygroscopic salts (CaCl 2 and LiCl) and it showed substantial uptake improvement. Preliminary results showed that LiCl impregnated caged silica is more efficient at water uptake compared to CaCl 2 . The proposed composite adsorbent (Si-9-Li & Si-9-Ca) could be used for the desalination application.

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Nickel nanoparticles synthesized from Psidium guajava peels mediated degradation of Orange E3 dye reactive dye: a sustainable approach

Rafique

Kiran

Jamal

et al. 2022

Int. J. Environ. Sci. Technol.

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Sonochemical synthesis of silica supported iron nanoparticles for enhanced removal of Cr(VI) species from aqueous medium

Cited by 6 publications

References 52 publications

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: Isotherm and kinetic studies

Enhanced elimination of chromium (VI) ions from wastewater with silica-mixed magnetic nanomaterial: Isotherm and kinetic studies

Optimized caged silica synthesis with lithium chloride and calcium chloride impregnation for prospective desalination application

Nickel nanoparticles synthesized from Psidium guajava peels mediated degradation of Orange E3 dye reactive dye: a sustainable approach

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