Su Lifen, Liu Xiaoyu, Xia Wei, Wu Bin, Li Changjiang, Xu Bo, Yang Bin, Xia Ru, Zhou Jianhua, Qian Jiasheng, Miao Lei
Anhui Province Key Laboratory of Environment-friendly Polymer Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China; School of Materials Science and Engineering, Anhui University, Hefei 230601, China.
Anhui Province Key Laboratory of Environment-friendly Polymer Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China.
J Colloid Interface Sci. 2023 Nov 15;650(Pt A):613-621. doi: 10.1016/j.jcis.2023.07.014. Epub 2023 Jul 5.
Solar-driven water evaporation is a promising technology of freshwater production to address the water scarcity. However, the photothermal material and the distilled water would be contaminated in the evaporation of wastewater including organic pollutants. In this work, MOF-derived C/TiO composites (carbonized UiO-66-NH (Ti)) with simultaneous photothermal and photocatalytic functions are designed for producing freshwater from sewage. With advantageous features of porous structure with large specific area, excellent sunlight absorption and super-hydrophilicity, the carbonized UiO-66-NH (Ti) layer exhibits high water evaporation efficiency of 94% under 1.0 sun irradiation. Meanwhile, the layer can simultaneously decompose the organic pollutants with degradation efficiency of 92.7% in the underlying water during solar-driven water evaporation. This bifunctional material will provide a new approach for solar-driven water evaporation and photocatalytic degradation of organic pollutant synergistically.
太阳能驱动的水蒸发是一种很有前景的淡水生产技术，可解决水资源短缺问题。然而，在包括有机污染物的废水蒸发过程中，光热材料和蒸馏水会受到污染。在这项工作中，设计了具有光热和光催化双重功能的金属有机框架衍生的C/TiO复合材料（碳化的UiO-66-NH₂(Ti)），用于从污水中生产淡水。碳化的UiO-66-NH₂(Ti)层具有比表面积大的多孔结构、优异的阳光吸收能力和超亲水性等优点，在1.0个太阳辐照下表现出94%的高水蒸发效率。同时，该层在太阳能驱动的水蒸发过程中能够同时分解下层水中的有机污染物，降解效率为92.7%。这种双功能材料将为太阳能驱动的水蒸发和有机污染物的光催化降解协同作用提供一种新方法。
