Adsorption of platinum(IV) onto composites based on silicon dioxide and vinyl acetate/1-vinylimidazole and vinyl acetate/4-vinylpyridine copolymers

Sipkina, E. I.; Лебедева, О. В.; Pozhidaev, Yu. N.; Оборина, Е. Н.

doi:10.1134/s2070205117040207

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The Langmuir capacity showed the remarkable performance of 139.09 mg/g adsorption capacity through the ion exchange interaction mechanism based on the Dubinin-Radushkevich energy (ED-R=8.29 kJ/mol). However, the MSA capacity also has lower Langmuir sorption capacity of Pt(IV) (139.09 mg/g) compared with Zr(IV)-based metal organic frameworks (Zr(IV)-MOFs = 193 mg/g) [32], imidazolium-based task specific polymeric ionic liquid (CP-AMIN = 282.80 mg/g) [33], and composites based on silicon dioxide (180 mg/g) [34].…”

Section: Characterization Of Msamentioning

confidence: 99%

Synthesis and Application of Positively Charged and Magnetically Separable Magnetite/Silica-Ammonium as an Effective Platinum(IV) Adsorbent

Ngatijo

Marlinda

Bemis

et al. 2022

MSF

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Platinum is a valuable metal that is widely used in industry, electronics, and catalysts. The use of Platinum has a significant impact on the production of waste, necessitating effective metal recovery. This study investigated Platinum (IV) recovery from wastewater using a positively charged and magnetically separable Magnetite/Silica-Ammonium (MSA). The MSA was prepared by co-precipitation procedure of silica-decorated quaternary ammonium in the Fe3+/Fe2+ solution. The characterization result of the MSA by FT-IR, X-ray diffraction (XRD), SEM-EDX, and Vibration Sample Magnetometer (VSM) demonstrated the success of MSA synthesis. The application of MSA to the Pt (IV) solution occurred at pH optimum 6,0 with the easy and quick retraction of MSA-loaded Pt (IV) by 29.3 emu/g magnetic strength of an external magnet. The adsorption isotherm study followed the Freundlich model (R2=0.9895) with the KF=2.57×10-2 mol/g. The monolayer capacity by Langmuir showed the remarkable performance of 139.09 mg/g adsorption capacity through the ion exchange interaction mechanism based on the Dubinin-Radushkevich energy (ED-R=8,3 kJ/mol). The kinetics study was fitted well to the Pseudo-second-order model indicated the fast adsorption of Pt (IV) into the MSA surface.

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Section: Characterization Of Msamentioning

confidence: 99%