Spherical cationic polymer networks with porphyrin photosensitizer for sustainable and efficient photocatalysis  

作　　者：Lingling Zhang Liwei Wu Junhui Bao Longhui Li Zejun Liu Feng Bai Jie Ju Xi Yao 

机构地区：[1]Key Laboratory for Special Functional Materials of Ministry of Education,School of Materials Science and Engineering,Henan University,Kaifeng 475004,China [2]Department of Chemistry,City University of Hong Kong,Kowloon,Hong Kong 999077,China

出　　处：《Nano Research》2024年第5期3934-3941,共8页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22172045,U23A20122,21905076,21905077);the Key Science Foundation Project of Henan Province(No.232300421146);the Key Scientific Research Project of Colleges and Universities in Henan Province(No.22B150001).

摘　　要：The continuous and sustainable photo-activity on micro-or nano-carriers has always been a key stepping stone in the industrialization of photo-catalysis,photo-synthesis,and photo-degradation.Herein,we report a new series of positively charged hollow microspheres carrying porphyrin moieties.Such hollow spheres are formed through crosslinking of well-ordered porous thin laminates,initiated by co-assembly of regular monomers and those decorated with porphyrin moieties.On the surface of an individual sphere,densely distributed positive sites attract anionic reactants.The superficial porphyrin decomposes the accumulated reactants under 1 Sun.After degradation and release of products,the photoactive sites are thereby renewed.We demonstrate that polymer network(1:10)exhibited superior sustainable photocatalytic performance with complete degradation of methyl orange(MO)in 40 min with no observable performance deterioration after six cycles.The established close loop of adsorption-reaction-release cycle makes possible many efficient and continuous photo-catalytic processes.

关 键 词：hydrogen bonding assembly PORPHYRIN sustainable photo-activity anionic pollutant 

分 类 号：O62[理学—有机化学]