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Steam generation by LaB 6 nanoparticles through photothermal energy conversion
Author(s) -
Zhang Chaofan,
Yuan Baohua,
Yang Lixia,
Bai Liangjiu,
Yang Huawei,
Wei Donglei,
Wang Wenxiang,
Liang Ying,
Wang Qingyao,
Chen Hou
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17076
Subject(s) - photothermal therapy , materials science , nanoparticle , evaporation , solar energy , desalination , chemical engineering , energy conversion efficiency , seawater , nanotechnology , energy transformation , chemistry , optoelectronics , membrane , oceanography , biology , geology , ecology , biochemistry , physics , engineering , thermodynamics
Solar steam generation has been considered as an effective way to solve the shortage of freshwater resources. In this paper, we have designed an interfacial evaporation device for efficient solar steam generation based on near infrared (NIR)‐absorbing lanthanum hexaboride (LaB 6 ) nanoparticles and melamine sponge (MS) as the skeleton. LaB 6 nanoparticles as a photothermal conversion material can absorb the NIR light and convert it into heat. Due to the porous 3D network and better hydrophilicity of MS, it can act as a substrate to support the LaB 6 dispersed on the surface and transport the water by the capillary force. The evaporation rate of 1.13 kg m −2 h −1 and photothermal conversion efficiency of 60.7% under 1 kW m −2 solar illumination were achieved. Moreover, LaB 6 ‐MS photothermal conversion device (LaB 6 ‐MS PTCD), with excellent chemical stability could purify different water sources such as simulated seawater, strong acid, strong alkaline, and dyed methylene blue solution, exhibiting promising application in highly efficient solar energy‐driven seawater desalination and wastewater purification.