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Title: Hollow black TiAlOx nanocomposites for solar thermal desalination
Authors: Yi, Luocai
Qi, Dianpeng
Shao, Ping
Lei, Chaojun
Hou, Yang
Cai, Pingwei
Wang, Genxiang
Chen, Xiaodong
Wen, Zhenhai
Keywords: Engineering::Materials
Issue Date: 2019
Source: Yi, L., Qi, D., Shao, P., Lei, C., Hou, Y., Cai, P., . . . Wen, Z. (2019). Hollow black TiAlOx nanocomposites for solar thermal desalination. Nanoscale, 11(20), 9958-9968. doi:10.1039/C8NR10117E
Journal: Nanoscale
Abstract: Although a solar–thermal conversion technique shows great potential for seawater desalination, there remains a grand challenge in exploring low-cost and high-efficiency photothermal materials. We report here a molten salt assisted galvanic replacement method for preparing a hollow black TiAlOx composite, which features a high solar absorptivity with up to 90.2% and has a high efficiency of 71.1% in a high salinity solution containing 15.3 wt% NaCl (∼5 times more concentrated than seawater). We exemplify the practical application of such hollow black TiAlOx composites as photothermal composites by setting up the automatic and manual tracking of solar desalination devices with a photic area of ∼1.0 m2, which can produce purified water with a rate of above 4.0 L m−2 day−1 in high-salinity water under natural light irradiation, and maintains good stability upon 5 days of continuous running. The advantages of the as-developed hollow black TiAlOx composites, including scalability, low cost, and high photothermal conversion efficiency, may open up a promising avenue practical application in seawater desalination.
ISSN: 2040-3364
DOI: 10.1039/C8NR10117E
Rights: © 2019 The Royal Society of Chemistry. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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