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Stabilized Mo2S3 by FeS2 based porous solar evaporation systems for highly efficient clean freshwater collection
Solar Energy Materials and Solar Cells ( IF 6.9 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.solmat.2020.110531
Zhenzhen Guo , Fang Yu , Zihe Chen , Zhuoxun Shi , Jinxing Wang , Xianbao Wang

Abstract Solar-powered vapor generation, by a strict structural design, has become one of the most effective ways to utilize solar energy for water remediation. Recently, low-cost molybdenum disulfide (MoS2) based solar evaporation systems have provided an ideal way for solar-powered vapor generation, while instability and low evaporation rate still remain as challenges. In this work, we introduce a stabilized Mo2S3 by FeS2 (Fe-Mo2S3) based porous solar evaporation system as a light-harvesting and light-thermal conversion material. The system reveals a dual feature with high light absorption and water supply, leading to a higher evaporation rate up to ~2.4 kg m-2 h-1 than MoS2 under 1 kW m-2 solar illumination. Long-time photothermal and cycle tests for brine further reveals that the porous solar evaporation system has excellent photothermal stability and relieves salt blockage problem to some extent. Meanwhile, this system can directly be used for the purification of seawater, organic solution and heavy metal ion solution. The water purification rate can reach approximately 1.76 kg m−2 h−1 under natural sun-light. It provides a very promising material for water purification, water pollution remediation and other related photothermal technologies.

中文翻译:

通过基于 FeS2 的多孔太阳能蒸发系统稳定 Mo2S3,用于高效清洁淡水收集

摘要 太阳能蒸汽发电经过严格的结构设计,已成为利用太阳能进行水体修复的最有效方式之一。最近,基于低成本二硫化钼 (MoS2) 的太阳能蒸发系统为太阳能蒸汽发电提供了一种理想的方式,但不稳定和低蒸发率仍然是挑战。在这项工作中,我们通过基于 FeS2 (Fe-Mo2S3) 的多孔太阳能蒸发系统引入了稳定的 Mo2S3 作为光收集和光热转换材料。该系统具有高光吸收和供水的双重特性,在 1 kW m-2 太阳光照射下,蒸发率比 MoS2 高约 2.4 kg m-2 h-1。盐水的长时间光热和循环测试进一步表明,多孔太阳能蒸发系统具有优异的光热稳定性,并在一定程度上缓解了盐堵塞问题。同时该系统可直接用于海水、有机溶液和重金属离子溶液的净化。在自然光照下,净水率可达约1.76 kg m−2 h−1。它为水净化、水污染修复和其他相关光热技术提供了非常有前景的材料。
更新日期:2020-07-01
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