Interface Engineering of a Ti4O7 Nanofibrous Membrane for Efficient Solar-Driven Evaporation,ACS Applied Materials & Interfaces

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Interface Engineering of a Ti4O7 Nanofibrous Membrane for Efficient Solar-Driven Evaporation
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-11-30 , DOI: 10.1021/acsami.2c15997
Xiaopan Qiu ₁ , Haoran Kong ₁ , Yuting Li ₁ , Qinhuan Wang ₁ , Yu Wang ₁

Affiliation

Solar-driven interfacial evaporation provides a feasible and sustainable way to solve the fresh water shortage using abundant solar energy and has recently attracted considerable attention. However, it has been limited by the evaporation rate and solar-heat conversion efficiency of the current materials. Herein, a novel Ti₄O₇ membrane with synergetic photothermal and electrothermal effects was developed using a straightforward in situ approach. Based on interface engineering, the interface between the surface of the membrane and water was hydrophobically modified, and a thermal insulation layer was added to the bottom of the membrane. The optimized self-floating membrane with excellent sunlight absorbability and conductivity achieved a remarkably high evaporation rate of 7.51 kg m^–2 h^–1 with a voltage of 3 V as compensation under one-sun irradiation (1 kW m^–2). Moreover, the bilayered membrane displayed efficient salt ion rejection, and the collected water can meet the World Health Organization (WHO) standard required for potable water.

中文翻译：

用于高效太阳能驱动蒸发的 Ti4O7 纳米纤维膜的界面工程

太阳能驱动的界面蒸发为利用丰富的太阳能解决淡水短缺问题提供了一种可行且可持续的方法，最近引起了广泛关注。然而，它受到当前材料的蒸发速率和太阳能热转换效率的限制。在此，使用简单的原位方法开发了一种具有协同光热和电热效应的新型 Ti ₄ O _7膜。基于界面工程，对膜表面与水的界面进行疏水改性，并在膜底部增加隔热层。优化的自浮膜具有出色的阳光吸收性和导电性，蒸发率高达 7.51 kg m^–2 h ^–1用 3 V 的电压作为一个太阳照射下的补偿 (1 kW m ^–2 )。此外，双层膜表现出高效的盐离子排斥能力，收集的水可以满足世界卫生组织（WHO）饮用水的标准要求。

更新日期：2022-11-30

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