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    Controlled Engineering of Nano-Povidones for Efficient Iodine Recovery and Antibacterial Reutilization

    Year: 2020

    Journal: ACS Sustain. Chem. Eng., Volume 8, AUG 10, page 11704–11712

    Authors: Borjihan, Qinggele; Zhu, Yingnan; Zhou, Rongtao; Zhang, Xu; Zhang, Lei; Luan, Shifang; Dong, Alideertu

    Organizations: National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51663019, 21621004, 21961132005, 21304044]; Natural Science Foundation of Inner Mongolia Autonomous Region [2019JQ03]; Open Research Fund of the State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences [2018-08]; Tianjin Natural Science FoundationNatural Science Foundation of Tianjin [18JCYB-JC29500]

    Keywords: nano-povidone; morphology; hydrophilicity/hydrophobicity balance; iodine recovery; antibacterial reutilization

    Iodine capture and reutilization have become one of the most pressing global challenges to public health. Herein, we synthesized novel antibacterial nano-povidones containing hydrophobic nitrile units and hydrophilic pyrrolidone units as two side chains via a radical copolymerization strategy. The pyrrolidone units functioned as an adsorbent to capture iodine and were capable of releasing iodine to attack pathogens. The particles' morphology, size, and hydrophilicity/hydrophobicity balance were regulated facilely by introducing polyacrylonitrile into the povidone system. The final nano-povidone-iodines were found to be extremely potent against two selected pathogens Escherichia coli and Staphylococcus aureus, with low cytotoxicity. Remarkably, in comparison with their bulk counterparts, the nano-povidone- iodines showed unexpectedly enhanced antibacterial action because of their special morphology and nanoscale size, rough surfaces, and hydrophilicity/hydrophobicity balance. This proposed strategy may indicate a new direction for pollutant treatment and secondary utilization.
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