Efficient and stable monolithic microreactor with Ag/AgCl photocatalysts coated on polydopamine modified melamine sponge for photocatalytic water purification

被引:20
作者
Duan, Jihai [1 ]
Fang, Xianxin [1 ]
Li, Chaojie [2 ]
Qu, Jianing [1 ]
Guo, Lexin [1 ]
Zou, Yuanqiang [1 ]
Xiang, Mengqi [1 ]
Wang, Weiwen [1 ]
机构
[1] Qingdao Univ Sci & Technol, Coll Chem Engn, Key Lab Multiphase Fluid React & Separat Engn Shan, Qingdao 266042, Peoples R China
[2] Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China
关键词
Monolithic microreactor; Ag; AgCl; Polydopamine; Photocatalytic water purification; Mass transfer; AG-AT-AGCL; OPTOFLUIDIC MICROREACTOR; PLASMONIC PHOTOCATALYST; FOAM; FABRICATION; REDUCTION;
D O I
10.1016/j.colsurfa.2022.130759
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The advantages of photocatalytic microreactors, including large specific surface area, rapid mass transfer, continuous flow operation capability and low safety hazards promote the application in the field of water purification., We propose a monolithic microreactor for depositing Ag/AgCl photocatalysts on the surface of the polydopamine(PDA) -modified melamine sponge(MS) backbone. The experimental results revealed that the monolithic microreactor enables to completely degrade methylene blue(MB) under visible light irradiation within 10 min and can photodegrade 250 L m-2 of MB per hour. Moreover, we confirmed that the lifetime of MS/PDA/Ag/AgCl can be extended by a simple in situ chemical recovery method, thus making the monolithic microreactor reusable for a long time. In conclusion, the prepared monolithic microreactor has high efficiency of photodegradation, high throughput and reusability, and displays broad application prospects in the field of photocatalytic water purification.
引用
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页数:13
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