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Conductive hollow kapok fiber-PPy monolithic aerogels with excellent mechanical robustness for efficient solar steam generation
- Source :
- Journal of Materials Chemistry A. 7:9673-9679
- Publication Year :
- 2019
- Publisher :
- Royal Society of Chemistry (RSC), 2019.
-
Abstract
- 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.
- Subjects :
- Materials science
Fabrication
Renewable Energy, Sustainability and the Environment
Kapok fiber
Energy conversion efficiency
02 engineering and technology
General Chemistry
021001 nanoscience & nanotechnology
Polypyrrole
Steam generation
chemistry.chemical_compound
Thermal conductivity
chemistry
General Materials Science
Composite material
0210 nano-technology
Porosity
Electrical conductor
Subjects
Details
- ISSN :
- 20507496 and 20507488
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Chemistry A
- Accession number :
- edsair.doi...........d961c3efe7cd6d6d20cc6a4990f1ed04