期刊
NANO LETTERS
卷 20, 期 8, 页码 5699-5704出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c01088
关键词
biosynthesis; bacterial cellulose; nanocomposite; solar steam generator; biomimetic design
类别
资金
- National Natural Science Foundation of China [51732011]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDJ-SSW-SLH036]
- Fundamental Rese arch Funds for the Cent ral Universities [WK2090050043]
- Users with Excellence and Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences [2015HSC-UE007]
Water purification by solar distillation is considered a promising technology for producing clean water from undrinkable water resources. A solar steam generator is a central part of a solar distillation process to separate water and contaminants. Here, we report an efficient and sustainable hierarchical solar steam generator (HSSG) with reduced vaporization enthalpy based on bacterial cellulose (BC) nanocomposites. The nanomaterials are assembled with BC nanofibers produced by bacteria in situ to form nanocomposites. Using this method, we construct functional BC nanocomposites inside and on the natural porous structure of wood. Our HSSG integrates solar-to-vapor efficiency improvement and vaporization enthalpy reduction by integrating the hierarchical multifunctional BC nanocomposites with the natural porous structure of wood. Because of the biomimetic design, hierarchical structure and reduced vaporization enthalpy of HSSG, a high evaporation rate of 2.9 kg m(-2 )h(-1) and solar-to-vapor efficiency of 80% is achieved.
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