材料科学
光热治疗
超亲水性
海水淡化
海水
润湿
蒸发
吸光度
化学工程
蒸发器
结冰
结垢
纳米技术
复合材料
化学
色谱法
气象学
海洋学
物理
膜
地质学
工程类
热交换器
热力学
生物化学
作者
Helong Zhang,Chuxiong Qiu,Rong Zhang,Zhangjing Zhang,Yunxia Chen,Taotao Zeng,Fen Qiao,Lee Li,Ghafar Ali,Xiujian Zhao,Yi Xie
标识
DOI:10.1016/j.cej.2024.153707
摘要
We develop layered MAX (e.g., Ti3AlC2, Ti3AlCN, Ti2AlC, Ti2AlN) into novel photothermal silica-deposited MAX (MAX@SiO2) composites and coatings for efficient seawater desalination and anti-/de-icing, by combining their strong optical absorbance capacity covering UV–Vis-NIR regions with unique surface wettability. The water evaporator with a unique gradient superhydrophilicity-hydrophilicity-hydrophobicity-superhydrophobicity is achieved by incorporating the as-synthesized hydroxyl- and methyl-modified MAX@SiO2 composites into porous melamine foam (MF). By combining the unique gradient wettability with porous structure and strong optical absorbance, the representative MAX@SiO2 evaporator displays excellent seawater desalination performance with high water evaporation rates of ∼2.19 and 3.45 kg m−2 h−1 under 1.0 and 2.0 sun irradiation, respectively. The photothermal water evaporation efficiency can reach to 91.2 % under 1.0 sun illumination. Besides, by sequential spray-depositing resin-based primer and MAX@SiO2 top-coat on glass slides and insulators, the as-achieved superhydrophobic (SH) photothermal coatings displayed excellent anti-icing and de-icing performances. The procedures described here enable a convenient and novel strategy to develop micro-nanocomposites and multifunctional coatings with strong photothermal conversion ability, which would shed light on promising potentials in energy conversion and photo-thermal applications including solar freshwater generation, sewage purification, and anti-/de-icing.
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