一种Fe3O4-TiO2磁性纳米片及其制备方法与应用

Fe3O4-TiO2 magnetic nanosheets were prepared by combining the sol-gel method and the solvothermal method, which solved the problems of easy aggregation and low catalytic activity of Fe3O4 nanoparticles. This enabled efficient catalytic degradation of RhB dye wastewater and multiple reuses of the catalyst, demonstrating good stability and economy.

CN118719062BActive Publication Date: 2026-07-17CHINA UNIV OF PETROLEUM (BEIJING)

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (BEIJING)
Filing Date
2024-06-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing Fe3O4 nanoparticles tend to aggregate in solution, and charge carriers are prone to recombination, which affects catalytic activity. Furthermore, traditional preparation methods make it difficult to control morphology and dispersibility, resulting in catalyst loss and high separation costs.

Method used

Fe3O4-TiO2 magnetic nanosheets were prepared by combining the sol-gel method and the solvothermal method. TiO2 and Fe3O4 were connected by chemical bonds to form a unique two-dimensional nanostructure, which promoted photogenerated electron transfer and suppressed electron-hole recombination, thereby improving catalytic activity.

Benefits of technology

It achieves efficient degradation of RhB dye wastewater and multiple reuses of the catalyst, reducing costs and exhibiting good recyclability and stability.

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Abstract

本发明公开了一种Fe3O4‑TiO2磁性纳米片及其制备方法与应用。所述磁性纳米片的制备方法包括如下步骤:S1、将氨水加入至Fe3O4磁性纳米片的分散液中;S2、将钛酸丁酯的溶液滴加至步骤S1得到的溶液中,进行反应;S3、将步骤S2得到的产物分散后,加入氨水,然后置于反应釜中进行热处理即得。基于本发明Fe3O4‑TiO2磁性纳米片良好的磁性以及高催化活性,其具有优异的循环利用性和稳定性,经过5次循环后,该体系光催化降解率及回收率仍超过90%。本发明实现了对RhB等染料废水的高效、快速和低成本降解,为废水催化降解材料的设计和应用提供了新的研究思路。
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