Environmentally Benign Biosynthesis of Hierarchical MOF/Bacterial Cellulose Composite Sponge for Nerve Agent Protection
Environmentally Benign Biosynthesis of Hierarchical MOF/Bacterial Cellulose Composite Sponge for Nerve Agent Protection
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DOI：
10.1002/anie.202202207
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发表时间：
2022-03-11
影响因子：
16.6
通讯作者：
Farha, Omar K.
中科院分区：
文献类型：
--
作者：
Ha Cheung, Yuk;Ma, Kaikai;Farha, Omar K.
MOF聚合物复合材料的制造使MOF技术的实际应用成为可能，特别是在防护服和口罩方面。然而，传统的生产方法通常需要有机溶剂进行加工，导致环境污染，负载效率低，可及性差，并且由于耐溶剂性差而失去功能。我们首次开发了微生物合成策略来制备MOF/细菌纤维素纳米纤维复合海绵。所制备的海绵具有分层多孔结构，MOF负载高（接近90%），耐溶剂性好，对神经毒剂模拟物的液体和固体水解具有较高的催化活性。此外，本文报道的MOF/细菌纤维素复合海绵在渗透性研究中显示，与商业化的吸附碳布相比，MOF/细菌纤维素复合海绵对超毒性神经毒剂（GD）的保护作用增强了近8倍。这里显示的结果是迈向实际应用mof为基础的神经毒剂防护装置的重要一步。
The fabrication of MOF polymer composite materials enables the practical applications of MOF-based technology, in particular for protective suits and masks. However, traditional production methods typically require organic solvent for processing which leads to environmental pollution, low-loading efficiency, poor accessibility, and loss of functionality due to poor solvent resistance properties. For the first time, we have developed a microbial synthesis strategy to prepare a MOF/bacterial cellulose nanofiber composite sponge. The prepared sponge exhibited a hierarchically porous structure, high MOF loading (up to approximate to 90 %), good solvent resistance, and high catalytic activity for the liquid- and solid-state hydrolysis of nerve agent simulants. Moreover, the MOF/ bacterial cellulose composite sponge reported here showed a nearly 8-fold enhancement in the protection against an ultra-toxic nerve agent (GD) in permeability studies as compared to a commercialized adsorptive carbon cloth. The results shown here present an essential step toward the practical application of MOF-based protective gear against nerve agents.