材料科学
沸石咪唑盐骨架
纳米纤维素
空气过滤器
过滤(数学)
咪唑酯
壳体(结构)
空气过滤
芯(光纤)
复合材料
纤维
纳米技术
被膜
化学工程
微粒
纤维素
吸附
金属有机骨架
有机化学
工程类
化学
统计
入口
生物
机械工程
数学
生态学
作者
Zhongyuan Huang,Chao Dang,Zhaoxia Sun,Haisong Qi
标识
DOI:10.1021/acsami.1c17052
摘要
Particulate matter (PM) in air has seriously endangered human health. Especially, PM0.3 can easily enter the lungs and blood through breathing. Herein, an air filter with a three-dimensional (3D) network consisting of core-shell structured fibers was designed by in situ growth of zeolitic imidazolate framework-8 on tunicate nanocellulose/glass fiber composite filter media (ZIF-8@TNC/GF). The filtration performance of the obtained ZIF-8@TNC/GF membranes against sodium chloride particles with the MPPS (most penetrating particle size) was investigated. The air filter media at the optimal ratio of ZIF-8 exhibited an ultrahigh efficiency of 99.998% and a quality factor of 0.0308 Pa-1 for PM0.3. Further characterizations showed that the ZIF-8@TNC/GF air filter had a hierarchical and rich pore structure, showing a large specific surface area (50.3 m2 g-1). More significantly, compared with the TNC/GF prepared by the dipping method, TNCs changed from the original two-dimensional (2D) nonuniform network to a uniform 3D network after the ZIF-8 was introduced. Moreover, the ZIF-8@TNC fibers with a core-shell structure inhibited the aggregation of nanocellulose. This study will shed light on the fabrication of high-efficiency TNC composite air filter media with fluffy 3D networks.
科研通智能强力驱动
Strongly Powered by AbleSci AI