Turning waste into treasure: Carbonized walnut shell for solar-driven water evaporation.
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| Title: | Turning waste into treasure: Carbonized walnut shell for solar-driven water evaporation. |
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| Authors: | Wang, Yuzhu1 (AUTHOR), Luo, Xinyi1 (AUTHOR), Song, Xinyuan1 (AUTHOR), Guo, Wei1,2 (AUTHOR) guowei@hrbnu.edu.cn, Yu, Kai1 (AUTHOR), Yang, Chunyu1 (AUTHOR) ycy@hrbnu.edu.cn, Qu, Fengyu1 (AUTHOR) qufengyu@hrbnu.edu.cn |
| Source: | Materials Letters. Jan2022, Vol. 307, pN.PAG-N.PAG. 1p. |
| Subjects: | Walnut, Waste products, Rough surfaces, Light absorption, Refuse containers |
| Abstract: | [Display omitted] • Solar-driven water evaporation using carbonized walnuts can turn waste into treasure. • carbonized walnut shell (Ar + H 2) showed a high η value (81.4%). • The water evaporation mechanism has been studied. Waste walnut shell was selected and carbonized in different atmospheres to prepare excellent light-to-heat conversion materials for efficient solar-driven water evaporation. Carbonized walnut shell has a unique concave structure and rough surface, and its light absorption rate is higher than 88% in the full-spectrum range of 200–2500 nm. Moreover, under one-sun irradiation, carbonized walnut shell in a hydrogen/argon atmosphere mixture has better water evaporation performance (1.22 kg m-1h−1) and a higher η value (81.4%) than the carbonized walnut shell in an argon atmosphere. The main reason was due to its higher degree of graphitization and smaller surface pores, which are beneficial to light-to-heat conversion. Our work highlights the great potential of the waste biomass material (walnut shell) for realizing a highly effective solar energy-driven water evaporation. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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