光热治疗
材料科学
纳米材料
蒸发
吸收(声学)
海水淡化
太阳能
化学工程
带隙
纳米技术
光电子学
复合材料
化学
生态学
物理
生物
工程类
热力学
生物化学
膜
作者
Tawseef Ahmad Wani,Parul Garg,Saheb Bera,Sanchari Bhattacharya,Sanjoy Dutta,Hemant Kumar,Ashok Bera
标识
DOI:10.1016/j.jcis.2021.12.158
摘要
Photothermal water evaporation provides a pathway towards a promising solution to global freshwater scarcity. Synergistic integration of functions in a material in diverse directions is a key strategy for designing multifunctional materials. Lanthanum-based perovskite complex oxides LaMO3 (M = Ni and Co) have narrow band gaps with a high absorption coefficient. These functionalities have not been appropriately explored for photothermal energy conversion. Here, we synthesized nanostructured metallic LaNiO3 and semiconducting LaCoO3 and used them to design interfacial solar steam generators. Effective light absorption capability over the entire solar spectrum of these materials leads to a photothermal efficiency of the order of 83% for both materials. Using a cone-shaped 3D interfacial steam generator with a LaNiO3 absorber, we achieved an evaporation rate of 2.3 kg m-2 h-1, corresponding to solar vapor generation efficiency of over 95%. To the best of our knowledge, this evaporation rate is higher than any oxide-based interfacial solar steam generator reported so far. Furthermore, we have also shown an effective way of using such evaporators for long-term seawater desalination.
科研通智能强力驱动
Strongly Powered by AbleSci AI