Na2Ti3O7纳米管与α-Fe2O3纳米微球磁性纳米复合材料的制备与表征

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-06-26 DOI:10.1016/j.jallcom.2025.181864

Denis P. Opra, Ivan A. Tkachenko, Albert M. Ziatdinov, Anton I. Neumoin, Nikita S. Saenko, Alexandra G. Zavidnaya, Valery G. Kuryavy, Sergey L. Sinebryukhov, Sergey V. Gnedenkov

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引用次数: 0

摘要

本文提出了一种以Na2Ti3O7和Fe2O3 （α-相）为基体制备具有分层结构的磁性纳米复合材料的方法。采用水热技术，在高碱性NaOH介质中，将TiO2与不同量的FeCl3联合处理，合成纳米复合材料。在该方法中，Na2Ti3O7纳米管和α-Fe2O3纳米球自组装复合微粒。纳米管状Na2Ti3O7与纳米球形α-Fe2O3的结合增强了其可见光敏化性能。带隙随着α-Fe2O3相含量的增加而减小，从3.29 eV增大到2.85 eV。纳米复合材料具有超顺磁性。阻断温度和矫顽力随α-Fe2O3颗粒含量的增加而升高。所得结果增强了对如何结合不同纳米材料来设计功能纳米复合材料的理解。

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Fabrication and characterization of magnetic nanocomposite with hierarchical structure made of Na2Ti3O7 nanotubes and α-Fe2O3 nanospheres

This paper presents a method for preparing magnetic nanocomposite with hierarchical structure based on Na₂Ti₃O₇ and Fe₂O₃ (α-phase). The nanocomposite was synthesized using hydrothermal technology through combined treatment of TiO₂ and various amounts of FeCl₃ in a highly alkaline NaOH medium. In this method, Na₂Ti₃O₇ nanotubes and α-Fe₂O₃ nanospheres self-assemble the compositing microparticles. The combining of nanotubular Na₂Ti₃O₇ with nanospherical α-Fe₂O₃ enhances its visible-light sensitization. The band gap decreases across increasing content of the α-Fe₂O₃ phase, up to 2.85 eV (from 3.29 eV). The nanocomposite exhibits superparamagnetic properties. Both blocking temperature and coercive force rise with increasing α-Fe₂O₃ particles content. The obtained results enhance an understanding of how to combine different nanomaterials to design functional nanocomposites.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.