期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 201, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.solmat.2019.110111
关键词
Solar steam generation; Aromatic polymers; Photothermal materials
资金
- National Natural Science Foundation of China [51663012]
- Project of Collaborative Innovation Team, Gansu Province, China [052005]
- 2019 Key Talent Project of Gansu, and Innovation and Entrepreneurship Talent Project of Lanzhou [2017-RC-33]
Cost-effective and scalable solution to fabricate high-performance photothermal materials is the key to enable widespread application for solar steam generation. Herein, we report the facile and scalable fabrication of monolithic porous foam based on cross-linked aromatic polymer (PDVB-PS) using styrene as monomer and divinylbenzene as cross-linking agent through a facile one-step hydrothermal method. The resulting PDVB-PS foam possesses well-controlled porous structure, open channel structure, low apparent density and low thermal conductivity (0.038Wm(-1)k(-1)). After modification with sodium alginate and polypyrrole, the as-modified PDVB-PS (named as PPy-coated M-PDVB-PS) shows a superhydrophilic wettability (water contact angle similar to 0 degrees) and stronger light absorption (ca. 90%), which could dramatically enhance its water transportation ability and photothermal property. Taking advantages of these unique physicochemical properties mentioned above, a high solar-vapor conversion efficiency of 87.6% for the PPy-coated M-PDVB-PS was obtained under 1-sun irradiation, showing great potentials for real applications. More importantly, as a kind of representative synthetic polymers, the success in employment of the PPy-coated M-PDVB-PS as efficient photothermal materials shown in this study may also open a new opportunity for rational design and fabrication of polymer-based solar generators derived from commercial available low-cost raw chemicals with simple and scalable manufacture process for practical solar steam generation on large scale.
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