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3D Cellulose‐Based Solar Evaporator with Tunable Porous Structures for High Steam Generation.
- Source :
- Advanced Sustainable Systems; Jun2024, Vol. 8 Issue 6, p1-9, 9p
- Publication Year :
- 2024
-
Abstract
- Solar vapor evaporation have emerged as a promising green technology to harvest fresh water. Achieving high evaporation rates while employing accessible and renewable materials is key focus in this field. Here, a 3D cylindrical‐shaped solar evaporator composed of natural cellulose is fabricated through ice‐templating freezing combined with crosslinking gelation. It demonstrates an evaporation rate of 4.2 kg m−2 h−1 under 1 sun irradiation, and reaches an energy efficiency of 173%, surpassing most reported cellulose/wood‐based evaporators. This enhanced performance is facilitated by absorbing energy from surrounding, possessing connected pores, and reducing the evaporation enthalpy. Moreover, a systematic exploration of the correlation between pore size and evaporation performance reveals that the reduced pore size (several micrometers) does not necessarily result in a higher evaporation rate, despite improving the fluid transportation. The interaction between water and cellulose induces the formation of intermediate water and reduces the evaporation enthalpy by more than 35%. Thus, the final evaporation performance is determined by a synergistic effect involving water transport, hydrophilicity, and vaporization enthalpy. Giving the high evaporation rate achieved, this 3D cellulose‐based solar evaporator presents a promising candidate toward a high‐throughput, eco‐friendly solar steam generation devices, aligning well with the criteria of green and sustainable development. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23667486
- Volume :
- 8
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Advanced Sustainable Systems
- Publication Type :
- Academic Journal
- Accession number :
- 177995157
- Full Text :
- https://doi.org/10.1002/adsu.202300670