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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Synthesis, characterization and dye adsorption of ilmenite nanoparticles
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Synthesis, characterization and dye adsorption of ilmenite nanoparticles

机译：钛铁矿纳米粒子的合成，表征和染料吸附

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摘要

FeTiO_3 nanoparticles (nano-FeTiO_3 or nano-ilmenite) can be synthesized by the sol-gel method. In this study, the physical properties and dye adsorption characteristics of nano-FeTiO_3 are investigated. A synthesized nano-ilmenite has a particle size of approximately 20 to 60 nm with a polycrystalline structure. The FeTiO_3 nanoparticles exhibit weak ferromagnetism and show high adsorption capacity for methylene blue. Experimental data are fitted to pseudo-first-order and pseudo-second-order equations; the pseudo-first-order model is found to be more suitable. It also suggests that the Langmuir isotherm is more adequate than the Freundlich isotherm in simulating the adsorption isotherm of organic dye. The maximum adsorption capacity is 71.9 mg/g, therefore, the magnetic FeTiO_3 nanoparticles show a considerably high adsorption capacity for organic dyes in a solution. These findings indicate that the nano-ilmenite is an effective material for dye removal and can be used to alleviate environmental problems.
机译：可以通过溶胶-凝胶法合成FeTiO_3纳米颗粒（纳米FeTiO_3或纳米钛铁矿）。本文研究了纳米FeTiO_3的物理性质和染料吸附特性。合成的纳米钛铁矿具有约20至60nm的具有多晶结构的粒径。 FeTiO_3纳米颗粒显示出弱的铁磁性，并显示出对亚甲基蓝的高吸附能力。实验数据适合伪一阶和伪二阶方程;发现伪一阶模型更合适。这还表明，在模拟有机染料的吸附等温线时，Langmuir等温线比Freundlich等温线更合适。最大吸附容量为71.9 mg / g，因此，磁性FeTiO_3纳米粒子对溶液中的有机染料具有相当高的吸附容量。这些发现表明，纳米钛铁矿是一种用于去除染料的有效材料，并且可以用于减轻环境问题。

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