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An Integrated Photocatalytic and Photothermal Process for Solar‐Driven Efficient Purification of Complex Contaminated Water
Energy Technology ( IF 3.6 ) Pub Date : 2020-07-31 , DOI: 10.1002/ente.202000456 Le Shi 1 , Yusuf Shi 1 , Chenlin Zhang 1 , Sifei Zhuo 1 , Wenbin Wang 1 , Renyuan Li 1 , Peng Wang 1, 2
Energy Technology ( IF 3.6 ) Pub Date : 2020-07-31 , DOI: 10.1002/ente.202000456 Le Shi 1 , Yusuf Shi 1 , Chenlin Zhang 1 , Sifei Zhuo 1 , Wenbin Wang 1 , Renyuan Li 1 , Peng Wang 1, 2
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With the water and energy crises becoming critical issues for an increasingly industrialized society, solar‐driven water purification technologies are highly desired for both potable water production and wastewater treatment. Herein, the performance of an integrated photocatalytic and photothermal composite, TiO2/Au‐carbon nanotube (TiO2/Au‐CNT)‐coated SiC ceramic plate, in complex contaminated water treatment driven by solar energy is investigated. The short‐wavelength part of the solar spectrum is used for simultaneous photo‐oxidation of rhodamine B (RhB) (oxidation efficiency of ≈98.5%) and photo‐reduction of Cr(VI) (reduction efficiency of ≈90.6%) in an integrated solar still device. A Z‐scheme charge transfer mechanism with CNTs as an electron mediator is proposed and discussed for TiO2/Au‐CNT‐coated SiC ceramic plate. Meanwhile, the design here allowed the long‐wavelength part of the solar spectrum to be utilized for high‐quality potable clean water production via solar distillation with a solar‐to‐water evaporation efficiency of ≈72%. Therefore, this integrated photocatalytic and photothermal system can be utilized for potable water production and wastewater treatment in the same device with high solar energy utilization efficiency.
中文翻译：
太阳能驱动的高效净化复杂污水的集成光催化和光热工艺
随着水和能源危机成为日益工业化的社会的关键问题，太阳能驱动的净水技术在饮用水生产和废水处理中都非常需要。此处，介绍了集成的光催化和光热复合材料TiO 2 / Au-碳纳米管（TiO 2/ Au‐CNT）涂层SiC陶瓷板，研究了太阳能驱动的复杂污水处理。太阳光谱的短波长部分用于在集成环境中同时进行若丹明B（RhB）的光氧化（氧化效率约98.5％）和Cr（VI）的光还原（≈90.6％）太阳能静止装置。的CNT作为电子介体AZ-方案电荷转移机构被提出并为讨论的TiO 2/ Au‐CNT涂层的SiC陶瓷板。同时，此处的设计允许通过太阳蒸馏将太阳光谱的长波长部分用于高质量的饮用水生产，太阳到水的蒸发效率约为72％。因此，该集成的光催化和光热系统可以在同一装置中用于具有高太阳能利用效率的饮用水生产和废水处理。
更新日期：2020-09-05
中文翻译：
太阳能驱动的高效净化复杂污水的集成光催化和光热工艺
随着水和能源危机成为日益工业化的社会的关键问题，太阳能驱动的净水技术在饮用水生产和废水处理中都非常需要。此处，介绍了集成的光催化和光热复合材料TiO 2 / Au-碳纳米管（TiO 2/ Au‐CNT）涂层SiC陶瓷板，研究了太阳能驱动的复杂污水处理。太阳光谱的短波长部分用于在集成环境中同时进行若丹明B（RhB）的光氧化（氧化效率约98.5％）和Cr（VI）的光还原（≈90.6％）太阳能静止装置。的CNT作为电子介体AZ-方案电荷转移机构被提出并为讨论的TiO 2/ Au‐CNT涂层的SiC陶瓷板。同时，此处的设计允许通过太阳蒸馏将太阳光谱的长波长部分用于高质量的饮用水生产，太阳到水的蒸发效率约为72％。因此，该集成的光催化和光热系统可以在同一装置中用于具有高太阳能利用效率的饮用水生产和废水处理。
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