Titanium carbide Ti3C2Tx (MXene) enhanced PAN nanofiber membrane for air purification
Titanium carbide Ti3C2Tx (MXene) enhanced PAN nanofiber membrane for air purification
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用于空气净化的碳化钛 Ti3C2TX (MXene) 增强 PAN 纳米纤维膜
DOI：
10.1016/j.memsci.2019.05.058
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发表时间：
2019-09-15
影响因子：
9.5
通讯作者：
Wang, Haihui
中科院分区：
文献类型：
--
作者：
Gao, Xue;Li, Zhong-Kun;Wang, Haihui
由于空气颗粒物污染造成的危害日益严重，因此需要高效的空气过滤器。在此，使用具有活性表面终止基团（O、OH和F）的二维碳化钛Ti3C2TX MXene纳米片对聚丙烯腈（PAN）纳米纤维过滤器进行改性，以增强其与PM2.5的相互作用力。通过基于力-距离曲线的 AFM 定量测量这些力，表明 PAN 纤维的 MXene 改性产生的相互作用力是以前的三倍。所获得的过滤器显示出约 99.7% 的高 PM2.5 去除效率和约 42 Pa 的低压降。此外，MXene 纳米片的存在强烈抑制过滤器中细菌（例如大肠杆菌和金黄色葡萄球菌）的繁殖。此类过滤器可以显着改善空气质量，尤其是在医院等公共场所。
Highly effective air filters are needed because of the increasing harm caused by air particulate matter pollution. Herein, two-dimensional titanium carbide Ti3C2Tx MXene nanosheets with active surface-terminating groups (O, OH and F) were used to modify the polyacrylonitrile (PAN) nanofiber filters to strengthen their interaction force with PM2.5. These forces were measured quantitatively through the force-distance curve-based AFM showing that the MXene modification of the PAN fiber induces three times larger interaction forces than before. The obtained filters show high PM2.5 removal efficiency of similar to 99.7% with a low pressure drop of similar to 42 Pa. Moreover, the presence of MXene nanosheets strongly inhibits the propagation of bacteria (e.g. E. coli and S. aureus) in the filters. Such filters can significantly improve air quality, especially in public places such as hospitals.