Covalent Organic Framework Sponges for Efficient Solar Desalination and Selective Uranium Recovery,ACS Applied Materials & Interfaces

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Covalent Organic Framework Sponges for Efficient Solar Desalination and Selective Uranium Recovery
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-06-30 , DOI: 10.1021/acsami.1c04419
Wei-Rong Cui ₁ , Cheng-Rong Zhang ₁ , Ru-Ping Liang ₁ , Juewen Liu ₂ , Jian-Ding Qiu ₁

Affiliation

Energy and fresh water are essential for the sustainable development of human society, and both could be obtained from seawater. Herein, we explored the first covalent organic framework (COF) sponge (named BHMS) by in situ loading the benzoxazole-linked COF (DBD-BTTH) onto a porous polymer scaffold (polydimethylsiloxane) as a synergistic platform for efficient solar desalination and selective uranium recovery. In natural seawater, BHMS shows a high evaporation rate (1.39 kg m^–2 h^–1) and an exceptional uranium recovery capacity (5.14 ± 0.15 mg g^–1) under 1 sun, which are due to its desirable inbuilt structural hierarchy and elastic macroporous open cells providing adequate water transport, increased evaporation sites of seawater, and selective binding sites of uranyl. Besides, the excellent photothermal performance and photocatalytic activity endow the BHMS with high solar desalination efficiency and excellent anti-biofouling activity and promote selective coordination of uranyl.

中文翻译：

用于高效太阳能海水淡化和选择性铀回收的共价有机骨架海绵

能源和淡水对人类社会的可持续发展至关重要，两者都可以从海水中获取。在此，我们通过将苯并恶唑连接的 COF（DBD-BTTH）原位加载到多孔聚合物支架（聚二甲基硅氧烷）上，作为高效太阳能脱盐和选择性铀的协同平台，探索了第一个共价有机骨架（COF）海绵（命名为 BHMS）恢复。在天然海水中，BHMS 显示出高蒸发率 (1.39 kg m ^–2 h ^–1 ) 和出色的铀回收能力 (5.14 ± 0.15 mg g ^–1) 在 1 太阳下，这是由于其理想的内置结构层次和弹性大孔开孔提供足够的水传输、海水蒸发点增加和铀酰的选择性结合位点。此外，优异的光热性能和光催化活性赋予了 BHMS 高的太阳能脱盐效率和优异的抗生物污垢活性，并促进了铀酰的选择性配位。

更新日期：2021-07-14

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