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    SiC-C Composite as A Highly Stable and Easily Regenerable Photothermal Material for Practical Water Evaporation

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    acssuschemeng.7b04695.pdf
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    Description:
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    Type
    Article
    Authors
    Shi, Le cc
    Shi, Yusuf
    Li, Renyuan cc
    Chang, Jian
    Zaouri, Noor A. cc
    Ahmed, Elaf cc
    Jin, Yong cc
    Zhang, Chenlin cc
    Zhuo, Sifei
    Wang, Peng cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2018-05-25
    Online Publication Date
    2018-05-25
    Print Publication Date
    2018-07-02
    Permanent link to this record
    http://hdl.handle.net/10754/627983
    
    Metadata
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    Abstract
    Solar-driven water distillation by photothermal materials is emerging as a promising way of renewable energy-driven clean water production. In designing photothermal materials, light absorption, photo-to-thermal conversion efficiency, and ability to localize thermal energy at the water-air interface are three important considerations. However, one additional consideration, regenerability, has so far slipped out of the photothermal material designs at status quo. This work reveals that there is a fouling layer formed during photothermal evaporation of real seawater (Red Sea water) and domestic wastewater, which once formed, would be difficult to remove. Herein, we synthesize a SiC-C composite monolith as an effective photothermal material where carbon acts as photothermal component and SiC serves as a heat conductor and strong structural support. The high mechanical strength of the monolithic composite makes it able to withstand repeatedly high strength physical cleaning by brush scrubbing and sonication and the anti-carbon-loss mechanism generates zero carbon loss during the physical cleaning. In the case of the domestic wastewater evaporation, the bio- and organic foulants on the SiC-C composite monolith can be totally removed by annealing at 1000 oC in N2 atmosphere. We believe that the SiC-C composite monoliths are promising photothermal materials in practical solar-driven water evaporation applications thanks to their highly stable and easily regenerable properties and therefore more research efforts are warranted to further improve their performances.
    Citation
    Shi L, Shi Y, Li R, Chang J, Zaouri N, et al. (2018) SiC-C Composite as A Highly Stable and Easily Regenerable Photothermal Material for Practical Water Evaporation. ACS Sustainable Chemistry & Engineering. Available: http://dx.doi.org/10.1021/acssuschemeng.7b04695.
    Sponsors
    This project is based upon work supported by the King Abdullah University Science and Technology (KAUST) CCF fund awarded to Water Desalination and Reuse Center (WDRC). Le Shi would like to thank Ran Tao from Mechanical Engineering at KAUST for his suggestions and comments of mechanical properties characterization.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Sustainable Chemistry & Engineering
    DOI
    10.1021/acssuschemeng.7b04695
    Additional Links
    https://pubs.acs.org/doi/10.1021/acssuschemeng.7b04695
    ae974a485f413a2113503eed53cd6c53
    10.1021/acssuschemeng.7b04695
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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