Amphipathic Janus Nanofibers Aerogel for Efficient Solar Steam Generation

Author:

Wang Rui1,Deng Jinshuo1,Wu Ping1,Ma Qianli1ORCID,Dong Xiangting2,Yu Wensheng2,Liu Guixia2,Wang Jinxian2ORCID,Liu Lei2

Affiliation:

1. Chongqing Research Institute Changchun University of Science and Technology Chongqing 401135 China

2. Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province Changchun University of Science and Technology Changchun 130022 China

Abstract

Solar steam generation is a promising water purification technology due to its low‐cost and environmentally friendly applications in water purification and desalination. However, hydrophilic or hydrophobic materials alone are insufficient in achieving necessary characteristics for constructing high‐quality solar steam generators with good comprehensive properties. Herein, novel hydrophile/hydrophobe amphipathic Janus nanofibers aerogel is designed and used as a host material for preparing solar steam generators. The product consists of an internal cubic aerogel and an external layer of photothermal materials. The internal aerogel is composed of electrospun amphipathic Janus nanofibers. Owing to the unique composition and structure, the prepared solar steam generator integrates the features of high water evaporation rate (2.944 kg m−2 h−1 under 1 kW m−2 irradiation), self‐floating, salt‐resisting, and fast performance recovery after flipping. Moreover, the product also exhibits excellent properties on desalination and removal of organic pollutants. Compared with traditional hydrophilic aerogel host material, the amphipathic Janus nanofibers aerogel brings much higher water evaporation rate and salt resistance.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Chongqing

Natural Science Foundation of Jilin Province

Publisher

Wiley

Subject

Energy (miscellaneous),Waste Management and Disposal,Environmental Science (miscellaneous),Water Science and Technology,General Materials Science,Renewable Energy, Sustainability and the Environment

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