Investigation of Adsorption Capacity of Magnetite Nanoparticles

Q3 Engineering

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-09-16 DOI:10.37394/232011.2021.16.18

V. Rodchenko, Kyaw Ye Ko

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引用次数: 2

Abstract

In this work, the preparation of Fe3O4 nanoparticles modified with 3-aminopropyltriethoxysilane (APTES) was carried out under various synthesis modes (in air or in argon). The zeta potential and hydrodynamic diameter of Fe3O4-APTES nanoparticles were determined by the method of dynamic and electrokinetic light scattering. The effect of humic acids on the zeta potential, hydrodynamic diameter and colloidal stability of Fe3O4-APTES at different pH values was established by the method of dynamic and electrophoretic light scattering. It has been shown that changes in the conditions of the synthesis of nanoparticles of one component composition Fe3O4-APTES (argon) and Fe3O4-APTES (air) (in an inert medium and in an air atmosphere, respectively) lead to a change in the charge of the particle surface and a subsequent change in the sorption properties with respect to HA. It was demonstrated that the decisive role in the study of surface properties is played by the purification from low-molecular-weight impurities that can screen the surface of nanoparticles or bind with an indifferent electrolyte. The stage of dispersive post-preparation of samples is also important for the correct determination of the sorption capacity and hydrodynamic diameter of particles.

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磁性纳米粒子吸附性能的研究

在本工作中，在各种合成模式下（在空气或氩气中），制备了3-氨基丙基三乙氧基硅烷（APTES）修饰的Fe3O4纳米粒子。采用动态和电动光散射方法测定了Fe3O4 APTES纳米粒子的ζ电位和流体动力学直径。采用动态光散射法和电泳光散射法研究了腐殖酸对Fe3O4 APTES在不同pH值下的ζ电位、水动力学直径和胶体稳定性的影响。已经表明，单组分组成的纳米颗粒Fe3O4 APTES（氩气）和Fe3O4 APTES（空气）的合成条件的变化（分别在惰性介质和空气气氛中）导致颗粒表面电荷的变化以及随后相对于HA的吸附性质的变化。研究表明，从低分子量杂质中纯化可以筛选纳米颗粒表面或与中性电解质结合的杂质，在表面性质研究中起着决定性作用。样品的分散后制备阶段对于正确测定颗粒的吸附能力和流体动力学直径也很重要。

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来源期刊

WSEAS Transactions on Applied and Theoretical Mechanics Engineering-Computational Mechanics

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： WSEAS Transactions on Applied and Theoretical Mechanics publishes original research papers relating to computational and experimental mechanics. We aim to bring important work to a wide international audience and therefore only publish papers of exceptional scientific value that advance our understanding of these particular areas. The research presented must transcend the limits of case studies, while both experimental and theoretical studies are accepted. It is a multi-disciplinary journal and therefore its content mirrors the diverse interests and approaches of scholars involved with fluid-structure interaction, impact and multibody dynamics, nonlinear dynamics, structural dynamics and related areas. We also welcome scholarly contributions from officials with government agencies, international agencies, and non-governmental organizations.