文献类型：期刊文献

英文题名：A photosensitive metal-organic framework having a flower-like structure for effective visible light-driven photodegradation of rhodamine B

作者：Qin, Lu[1];Zhao, Shicheng[1];Fan, Chenran[1];Ye, Qian[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：11

期号：30

起止页码：18565

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20212310451442);WOS:【SCI-EXPANDED(收录号:WOS:000654041100050)】；

基金：We thank the National Natural Science Foundation of China (grant 21878089) for financial support.

语种：英文

外文关键词：Azo dyes - Photosensitivity - Light sensitive materials - Photocatalytic activity - Catalyst activity - Light - Metal-Organic Frameworks - Morphology

摘要：Porphyrin-based metal-organic frameworks (MOFs) have great photocatalytic potential due to their good photosensitivity. Their photocatalytic performance is not only determined by molecular structure but also by morphology. Flower-like MOFs are considered to be good materials for catalysis due to their larger specific surface area, more exposed active sites, and good stability. Here, we first proposed a method to synthesize flower-like porphyrin-based MOFs using trifluoroacetic acid as a morphology control agent. These MOFs had a large BET surface area (605.04 m(2) g(-1)), a stable structure and a complete morphology. Meanwhile, we discussed their self-assembly process and mechanism in detail. In addition, we studied the photocatalytic performance of flower-like porphyrin-based MOFs and found that the flower-like Cu-TCPP (TCPP = tetrakis(4-carboxyphenyl)porphyrin) has excellent photocatalytic activity. Its photodegradation efficiency toward the cationic dye rhodamine B reached 88% within 100 min and the sample still maintained its stable catalytic activity and complete flower-like morphological structure after five repeated uses. Furthermore, this synthetic strategy can be extended to control the morphology of other MOFs.