Tian Yankuan, Yang Xin, Xu Long, Wang Xueli, Yu Jianyong, Wu Dequn, Li Faxue, Gao Tingting
Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
Innovation Center for Textile Science & Technology, Donghua University, Shanghai 201620, China.
Materials (Basel). 2022 Aug 26;15(17):5917. doi: 10.3390/ma15175917.
The dilemma of diminishing freshwater resources caused by water pollution has always impacted human life. Solar-driven interfacial evaporation technology has the potential for freshwater production via solar-driven distillation. However, in solar-driven interfacial evaporation technology, it is difficult to overcome the problem of wastewater containing various contaminants. In this work, we propose a bifunctional fabric created by depositing titanium dioxide@carbon black nanoparticles onto cotton fabric (TiO@CB/CF). The TiO@CB/CF has a coupling effect that includes the photothermal effect of CB and photocatalysis of TiO, and it can not only generate clean water but can also purify contaminated water. The resulting bifunctional fabric can achieve an outstanding water evaporation rate of 1.42 kg m h and a conversion efficiency of 90.4% in methylene blue (MB) solution under one-sun irradiation. Simultaneously, the TiO@CB/CF demonstrates a high photocatalytic degradation of 57% for MB solution after 2 h with light irradiation. It still shows a good photocatalysis effect, even when reused in an MB solution for eight cycles. Furthermore, the TiO@CB/CF delivers excellent performance for actual industrial textile dyeing wastewater. This bifunctional fabric has a good application prospect and will provide a novel way to resolve the issue of freshwater scarcity.
水污染导致淡水资源减少的困境一直影响着人类生活。太阳能驱动的界面蒸发技术具有通过太阳能蒸馏生产淡水的潜力。然而，在太阳能驱动的界面蒸发技术中，难以克服含有各种污染物的废水问题。在这项工作中，我们提出了一种通过将二氧化钛@炭黑纳米颗粒沉积在棉织物上制备的双功能织物（TiO@CB/CF）。TiO@CB/CF具有耦合效应，包括CB的光热效应和TiO的光催化作用，它不仅可以产生清洁水，还可以净化污水。所得的双功能织物在一个太阳光照下，在亚甲基蓝（MB）溶液中可实现1.42 kg m⁻² h⁻¹的出色水蒸发速率和90.4%的转换效率。同时，TiO@CB/CF在光照2小时后对MB溶液表现出57%的高光催化降解率。即使在MB溶液中重复使用八次，它仍显示出良好的光催化效果。此外，TiO@CB/CF对实际工业纺织印染废水具有优异的性能。这种双功能织物具有良好的应用前景，将为解决淡水短缺问题提供一种新途径。
