废水处理使用高性能现场形成的双异质连接Janus光催化剂微粒通过微流体装置成形
Hassanin M Ali1,2, Farzaneh Arabpour Roghabadi1, Vahid Ahmadi3
1Department of Process Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115-114, Iran.
Langmuir : the ACS journal of surfaces and colloids
|June 27, 2024
概括
这项研究开发了用于高效废水处理的聚甲基 (PDMS) 微粒的新Janus光催化剂. Ag/TiO2@PDMS系统有效降解有机染料和药品,具有高稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 污染废水有机染料和药品造成环境风险.
- 开发高效和稳定的光催化剂对于水资源整治至关重要.
- 异质连接光催化剂为污染物降解提供了更高的性能.
研究的目的:
- 制造一种用于废水处理的新型异质光催化系统.
- 在聚甲基 (PDMS) 微粒上合成双异质连接的Janus光催化剂.
- 评估Ag/TiO2@PDMS系统对降解罗达胺B和四环素的效率和稳定性.
主要方法:
- 使用共流微流体装置制造可调整尺寸的PDMS微粒.
- 在多孔PDMS上通过聚合物链蚀刻和银源处理合成Ag/TiO2 Janus类光催化剂.
- 在现场创建Ag/TiO2-TiO2金属半导体异质连接.
- 在可见光下测试罗达胺B (RhB) 和四环素 (TC) 的光催化降解.
主要成果:
- 实现了高分解效率:94.4%的RhB和91.1%的TC.
- 优化条件包括pH11,可见光,60分钟和特定的催化剂/反应剂度.
- 经过五个循环后,表现出极好的稳定性,没有显著的性能损失.
结论:
- 开发的Ag/TiO2@PDMS光催化剂系统对于降解废水中的有机污染物非常有效.
- 类似于雅努斯的双异质连接结构增强了光催化活性.
- 由于其效率和稳定性,该系统显示出实际环境应用的有希望的潜力.
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