期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 16, 页码 9673-9679出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta12243a
关键词
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资金
- National Natural Science Foundation of China [51663012, 51462021]
- Natural Science Foundation of Gansu Province, China [1610RJYA001]
- Support Program for Hongliu Young Teachers [Q201411]
- LUT [J201401]
- Support Program for Longyuan Youth
- Fundamental Research Funds for the Universities of Gansu Province
- Collaborative Innovation Team Project
- Innovation and Entrepreneurship Talent Project of Lanzhou [2017-RC-33]
Solar steam generation by heat localization has attracted much attention for its potential in the treatment of wastewater and seawater desalination. However, the preparation of a single-component solar receiver with low cost, simple preparation process, high mechanical strength and energy conversion efficiency is still a challenge. Herein, we report the preparation of kapok fiber-PPy aerogels with superwetting, porous structure, high light absorption, and high mechanical strength via polypyrrole modification of the Ca2+ crosslinked kapok fiber aerogels. The kapok fiber-PPy aerogels show three-dimensional structure with high porosity (94%), excellent light absorption (ca. 97%), low thermal conductivity (0.0241 W m(-1) k(-1)) and high mechanical strength (0.12 MPa under 75% of strain). As a solar steam generation device, a high energy conversion efficiency of 82.4% was achieved under 1 kW m(-2) illumination. The findings of this investigation may open a simple and novel route towards the fabrication of a low-cost a single-component biomass-based solar receivers for solar steam generation.
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