Environmental Studies and Forestry

Multifunctional solar water harvester with high transport selectivity and fouling rejection capacity

X. Hao, H. Yao, et al.

Discover a revolutionary solar-powered graphene/alginate hydrogel that excels in clean water extraction while rejecting harmful pollutants. This innovative material not only filters out over 99.5% of volatile organic compounds but also deactivates nearly 100% of bacteria, making it a game-changer for providing safe drinking water. This pioneering research was conducted by Xuanzhang Hao, Houze Yao, Panpan Zhang, Qihua Liao, Kaixuan Zhu, Jian Chang, Huhu Cheng, Jiayin Yuan, and Liangti Qu.

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Abstract

This research presents a novel solar-powered graphene/alginate hydrogel (GAH) for clean water extraction. The GAH demonstrates high selectivity in water transport, rejecting over 99.5% of volatile organic compounds, over 99.3% of ions (Na+, Mg2+, K+, and Ca2+), and 100% of non-volatile organic compounds and bacteria. Its antifouling properties include an oil contact angle exceeding 140° underwater, nearly 100% bacteria deactivation, and salt crystallization prevention. This makes it highly suitable for converting contaminated surface water into safe drinking water.

Publisher

Nature Water

Published On

Nov 30, 2023

Authors

Xuanzhang Hao, Houze Yao, Panpan Zhang, Qihua Liao, Kaixuan Zhu, Jian Chang, Huhu Cheng, Jiayin Yuan, Liangti Qu

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