大学化学

上一篇    下一篇

基于微波辅助合成Fe3O4@TiO2@Ag的光催化综合实验设计与实践

廖文龙1, 李惠茗1, 贾玲普2, 刘坤平3, 李红梅1   

  1. 1 成都大学食品与生物工程学院, 四川 成都 610106;
    2 成都大学机械工程学院, 四川 成都 610106;
    3 成都大学药学院, 四川 成都 610106
  • 收稿日期:2025-12-26 修回日期:2026-03-04
  • 通讯作者: 廖文龙, 李红梅 E-mail:liaowenlong@cdu.edu.cn;lihongmei@cdu.edu.cn Wenlong Liao, Hongmei Li
  • 基金资助:
    成都大学2024-2026年本科教育教学改革研究项目(cdjgb2024237, cdjgb2024125)

Comprehensive experimental design and practice of photocatalysis based on microwave-assisted synthesis Fe3O4@TiO2@Ag

Wenlong Liao1, Huiming Li1, Lingpu Jia2, Kunping Liu3, Hongmei Li1   

  1. 1 School of Food and Biological Engineering, Chengdu University, Chengdu 610106, Sichuan Province, China;
    2 School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan Province, China;
    3 School of Pharmacy, Chengdu University, Chengdu 610106, Sichuan Province, China
  • Received:2025-12-26 Revised:2026-03-04
  • Contact: Wenlong Liao, Hongmei Li E-mail:liaowenlong@cdu.edu.cn;lihongmei@cdu.edu.cn

PDF

44

赞

摘要： 本文提出一种基于微波辅助的磁性复合光催化材料制备方案，并将其应用于本科生综合化学实验教学。该方案以纳米Fe3O4为磁性内核，通过溶胶-凝胶法包覆非晶TiO2后，置于含Ag+的氨水-乙醇体系中，经180℃微波辅助水热15分钟，同步实现TiO2非晶态向锐钛矿的晶型转换以及银纳米粒子(AgNPs)的原位负载。该方案不仅有效缩短实验周期、降低能耗，显著提升实验安全性与操作便捷性，还能切实强化学生对材料合成、表征及性能测试的全流程实践能力；同时，通过多变量探究式教学设计，可有效培养学生的创新思维和科研素养。

关键词: 微波辅助合成, Fe3O4@TiO2@Ag, 光催化降解, 磁分离

Abstract: This study proposes a microwave-assisted preparation method for magnetic composite photocatalytic materials and its application in undergraduate comprehensive chemistry experiments. Using nano-Fe3O4 as the magnetic core, the material was coated with amorphous TiO2 via sol-gel method, then treated in an ammonia-ethanol system containing Ag+ under microwave-assisted hydrothermal conditions at 180 °C for 15 minutes. This process simultaneously achieved the phase transformation of TiO2 from amorphous to anatase and the in-situ loading of silver nanoparticles (AgNPs). The proposed method not only significantly reduces reaction time and energy consumption while improving operational safety, but also effectively enhances students' practical skills in material synthesis, characterization, and performance testing. Through a multi-variable inquiry-based teaching design, the experiment further cultivates students’ innovative thinking and research competencies.

Key words: Microwave-assisted synthesis, Fe3O4@TiO2@Ag, Photocatalytic degradation, Magnetic separation