文献类型：期刊文献

英文题名：Silver-Modified β-Cyclodextrin Polymer for Water Treatment: A Balanced Adsorption and Antibacterial Performance

作者：Wang, Xin[1];Chen, Huafeng[2];Wang, Jianyu[2];Zhou, Yi[2];Cui, Changzheng[2];Zhou, Yanbo[1,2]

机构：[1]East China Univ Sci & Technol, Sch Carbon Neutral Future Technol, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：13

期号：21

外文期刊名：WATER

收录：;EI(收录号：20214411099410);WOS:【SCI-EXPANDED(收录号:WOS:000718407100001)】；

基金：FundingThis research was funded by the National Natural Science Foundation of China (51778230), the Program of Shanghai Outstanding Technology Leaders (20XD1433900), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：cyclodextrin polymer; adsorption; antibacterial; polydopamine; nano-silver

摘要：Water pollution caused by organic pollutants and pathogenic microorganism is a critical issue. In this study, we reported a silver-modified beta-cyclodextrin polymer (CD-CA/PDA-Ag) used for the removal of dyes and the suppression of microorganisms from water. In order to avoid silver nanoparticles agglomeration, the material was first coated with polydopamine (PDA) on beta-cyclodextrin matrix, whose reducing catechol groups subsequently immobilized silver ions in situ to form uniformly dispersed silver nanoparticles. CD-CA/PDA-0.5Ag displayed a high adsorption capacity of methylene blue (535.93 mg/g), which is mainly attributed to electrostatic interactions, host-guest inclusions and pi-pi bond stacking effects. Furthermore, both diffusion inhibition zone tests and colony formation unit tests were investigated, which showed excellent antimicrobial capability on Escherichia coli (E. coli) and Staphylococcus aureus (S. auerus). Overall, CD-CA/PDA-Ag proved to have an excellent adsorption capacity and antibacterial performance, which provides a great potential in water purification.