Enabling Continuous and Improved Solar-Driven Atmospheric Water Harvesting with Ti3C2-Incorporated Metal–Organic Framework Monoliths

材料科学 整体 相对湿度 吸附 多孔性 化学工程 解吸 工艺工程 金属有机骨架 环境科学 催化作用 复合材料 气象学 物理 有机化学 化学 工程类 生物化学
作者
Qiannan Wu,Wen Su,Qiangqiang Li,Yingle Tao,Haiqing Li
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:13 (32): 38906-38915 被引量:64
标识
DOI:10.1021/acsami.1c10536
摘要

Solar-powered atmospheric water harvest (SAWH) with metal–organic frameworks (MOFs) represents one of the most sustainable, energy-efficient, and low-cost ways to alleviate water shortage stress in arid regions. However, the daily water productivity of previously developed SAWH devices remains low as they are merely allowed to be operated in batch mode and complete one water harvest cycle every day. This inevitably makes it rather challenging to deploy MOF-based SAWH for water production at scales. To overcome this challenge, MXene Ti3C2-incorporated UiO-66-NH2 (TUN) cylindrical monoliths (13 mm diameter, 4 mm thickness) with vertically aligned porous networks have been prepared and exhibited greatly enhanced solar heating capacity and atmospheric water adsorption/desorption kinetics. Using TUN monoliths as atmospheric water adsorbents, a novel SAWH device containing a flippable adsorbent stage with dual TUN monolith layers attached on both sides has been fabricated. Such a novel design enables the prototype to produce water in a continuous mode under sunlight irradiation, delivering 57.8 mLH2O kgMOF–1 h–1 of water productivity in a simulated indoor arid environment (20% relative humidity, 298 K). This is the first exploration in continuous water production with MOF-based SAWH, demonstrating a promising way to achieve scalable and low-cost SAWH in arid areas.
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