High-absorption recyclable photothermal membranes used in a bionic system for high-efficiency solar desalination via enhanced localized heating
| Autor: | Jiahui Xie, Yizhen Liu, Qixing Wu, Junmin Zhang, Zhenjie Yang, Xuechang Zhou, Huide Fu, Huang Xichong, Zhipeng Liu, Chaoyan Xuan |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry Evaporation 02 engineering and technology General Chemistry Photothermal therapy 010402 general chemistry 021001 nanoscience & nanotechnology Solar energy 01 natural sciences Desalination 0104 chemical sciences Thermal conductivity Thermal insulation Thermal General Materials Science 0210 nano-technology Process engineering business Solar desalination |
| Zdroj: | Journal of Materials Chemistry A. 5:20044-20052 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | Desalination utilizing solar energy is an effective way to mitigate the crisis of water shortage, but its large-scale application in production has been largely limited by the low evaporation efficiency. Here, we report a plate thermal reduction (PTR) method for rapid preparation of plasmonic-active filter paper (PP) as the photothermal material with broadband solar absorption over 92%. By imitating the spontaneous water circulation mechanism of plants, we designed a high-efficiency bionic solar evaporation and desalination system. Air with excellent low thermal conductivity was used as the thermal insulation material. Because of the enhanced localized heating effect, the system features a high solar evaporation efficiency of up to 89% under 10 kW m−2. Furthermore, under natural sunlight, the bionic system has a drinkable freshwater production rate of 0.97 kg m−2 h−1 under about 0.9 kW m−2 with the highest evaporation efficiency of 79% for one day. With simple material preparation and efficient and stable performance, the bionic system is ideal for large-scale production to tackle energy, water resource and environmental issues. |
| Databáze: | OpenAIRE |
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