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A three-dimensional antifungal wooden cone evaporator for highly efficient solar steam generation
npj Clean Water ( IF 11.4 ) Pub Date : 2023-02-20 , DOI: 10.1038/s41545-023-00231-3
Meihua Xie, Ping Zhang, Yizhong Cao, Yutao Yan, Zhe Wang, Chunde Jin

Interfacial solar energy evaporation is an effective measure to alleviate the current global shortage of clean water resources. However, many solar evaporators are two-dimensional (2D) structured devices developed by coating light-absorbing materials on the surface of host materials, and the efficiency of solar steam generation is limited. For this reason, the present study reports a facile and environment-friendly method to construct a conical three-dimensional (3D) wooden evaporator, which uses flexible wood as the substrate and tannic acid complex as the light-absorbing material and is formed by further convolution. Reasonable structural design and material combination enable the evaporator to show excellent mildew resistance and highly efficient evaporation performance. The black decoration considerably improves the wood light absorption, resulting in high absorbance (>90%) of DW-TA-Fe3+ in the wavelength range of 200–800 nm. The water evaporation rate of the wooden cone evaporator can reach up to 1.79 kg m−2 h−1, about 1.6 times higher than that of the 2D evaporator. Moreover, the evaporator exhibits outstanding biological stability and effective desalination performance. This work is expected to offer a new direction in designing a 3D wooden evaporator for effective solar water desalination.



中文翻译:

用于高效太阳能蒸汽产生的三维抗真菌木锥蒸发器

界面太阳能蒸发是缓解当前全球清洁水资源短缺的有效措施。然而,许多太阳能蒸发器是通过在主体材料表面涂覆吸光材料而开发的二维(2D)结构装置,太阳能蒸汽产生的效率有限。为此,本研究报告了一种简便且环保的方法来构建锥形三维 (3D) 木质蒸发器,该蒸发器以柔性木材为基材,单宁酸复合物为吸光材料,并通过进一步形成卷积。合理的结构设计和材料组合,使蒸发器表现出优异的防霉性能和高效的蒸发性能。黑色装饰大大提高了木材的吸光性,3+在 200–800 nm 的波长范围内。木锥蒸发器的水蒸发速率可达1.79 kg m -2  h -1,比二维蒸发器高约1.6倍。此外,该蒸发器具有出色的生物稳定性和有效的脱盐性能。这项工作有望为设计用于有效太阳能海水淡化的 3D 木质蒸发器提供新方向。

更新日期:2023-02-21
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