Journal
CHEMICAL ENGINEERING JOURNAL
Volume 446, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.137275
Keywords
Solar evaporation; Desalination; 3D interconnected porous structure; TiB (2) -Ti (C, N)/MoS 2 composites; Wastewater purification
Categories
Funding
- National Natural Science Foundation of China [U2106216, 51772176, 51971121, 52002228, 22102086]
- Taishan Scholarship ofClimbing Plan [tspd20161006]
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A multifunctional porous ceramic composite was designed, which achieved high solar absorption and evaporation rate, and possessed salt self-cleaning and high pollutant removal efficiency.
Interface solar steam generation is considered a promising method to effectively obtain freshwater from seawater or wastewater. Particularly, designing photothermal composites, which are stable in the marine environment, and with controllable porous structure, is critically important. Herein, a multifunctional porous ceramic composite was designed by decorating the transition metal borides-carbonitride with 1T/2H MoS2 (TiB2-Ti (C, N)/ MoS2-24 h), which can achieve a high solar absorption of asymptotic to 95.3% at full-spectrum and evaporation rate of 2.87 kg m(-2) h(-1) under one-sun illumination. The super-hydrophilicity, macropore trait, 3D interconnected porous structure, high porosity, and intrinsic nature of TiB2-Ti (C, N) endow the TiB2-Ti (C, N)/MoS2-24h composite with strong salt self-cleaning, stability and excellent durability. Furthermore, another big advantage of TiB2-Ti (C, N)/MoS2-24h is the high pollutants removal efficiency, which attributes to its interconnected featured pore structure, rough pore wall, and abundant active sites of MoS2. As a result, the removal efficiency of heavy metal ions and organic dyes can achieve 99.9% and 100%, respectively. It is anticipated that this work is a promising attempt with enormous potential to develop multifunctional ceramic photothermal composites for efficient solar evaporation and wastewater purification in future applications.
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