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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 2/2019

28.11.2018 | Original Paper: Nano- and macroporous materials (aerogels, xerogels, cryogels, etc.)

Effects of different parameters on the synthesis of silica aerogel microspheres in supercritical CO2 and their potential use as an adsorbent

verfasst von: Ersin Başaran, Tuğba Alp Arıcı, Adnan Özcan, Özer Gök, A. Safa Özcan

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 2/2019

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Abstract

Synthesis of metal oxide microspheres in supercritical carbon dioxide (SCO2) is very attractive for a wide range of applications such as catalysis, controlled release, and separation science due to their identical properties. The aim of this study is the synthesis of silica microspheres (SM) in SCO2 by sol–gel method. The effects of temperature, pressure, flow rate, time, co-solvent and its ratio on the synthesis of silica microspheres in SCO2 were investigated. The synthesized microspheres were characterized by several techniques including field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), and surface area analysis. The results indicated that the optimum condition for the synthesis of SM was determined at 150 bar, 80 °C, and 2.5 mL min−1 of SCO2 flow rate. The usability of SM as an adsorbent for the removal of dyes and heavy metals from aqueous solutions was also examined. Kinetic and isotherm studies for the adsorption of Pb(II) ions and Acid Blue 260 (AB260) onto SM were carried out.
Vorheriger Artikel Methyltrichlorosilane modified hydrophobic silica aerogels and their kinetic and thermodynamic behaviors
Nächster Artikel Effective cancer treatment by targeted pH sensitive–gold nanoparticles without using laser irradiation

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Metadaten
Titel
Effects of different parameters on the synthesis of silica aerogel microspheres in supercritical CO2 and their potential use as an adsorbent
verfasst von
Ersin Başaran
Tuğba Alp Arıcı
Adnan Özcan
Özer Gök
A. Safa Özcan
Publikationsdatum
28.11.2018
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 2/2019
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4885-6

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