Surface functionalization and characterization of colloidal SiO2 particles with potential application in dyes sorption from aqueous, organic and microemulsion media

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-03-17 DOI:10.1016/j.molliq.2025.127409

Nikita O. Shaparenko, Marina G. Demidova, Tatyana Yu Podlipskaya, Eugene M. Maximovskiy, Vladimir V. Tatarchuk, Alexander I. Bulavchenko

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引用次数: 0

Abstract

The study is devoted to the adsorption (cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS)) and chemical ((3-aminopropyl)triethoxysilane (APTES)) functionalization of the surface of amorphous silica particles obtained by evaporation of quartz using a relativistic electron beam. A set of four sorbents (the initial and three modified ones) was synthesized as ultradispersed powders and durable films on the microscope slides. The powders were ultrasonicated in water, organic solvents (dimethyl sulfoxide, acetonitrile, dimethyl formamide, ethanol, acetone, isopropanol, tetrachloroethylene, chloroform, and n-decane) and sodium bis(2-ethylhexyl)sulfosuccinate (AOT) microemulsions in n-decane to obtain dispersions of particles. Particles in the dispersions were characterized by photon-correlation spectroscopy (PCS) and phase analysis of light scattering (PALS). Their hydrodynamic diameter (60 ÷ 600 nm) and ζ-potential (–40 ÷ 67 mV) were varied by changing the pH of the solution (2–9), the concentration (10^–6 ÷ 10^–2 M) of ionic surfactants (CTAB and SDS), polarity of solvents (ε = 2 ÷ 80) and water content in microemulsion (0 ÷ 9 vol%). Superhydrophilic films were formed on the surface of microscope slides by the Doctor Blade method. Surface tension, contact angles and roughness of the films were measured using the pendant/sessile drop and atomic-force microscopy methods, respectively. The obtained series of powder and film sorbents is promising and will be used in our studies for the sorption of cationic, anionic and solvent dyes from aqueous and non-aqueous media.

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.