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Issue 39, 2018
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Narrow bandgap semiconductor decorated wood membrane for high-efficiency solar-assisted water purification

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Abstract

Solar steam generation is a promising solar energy conversion technology due to its potential applications in water treatment, liquid–liquid phase separation, and sterilization. Therefore, finding highly efficient solar-thermal conversion materials and structures is highly desirable. Here, we developed a membrane consisting of a narrow bandgap semiconductor of CuFeSe2 nanoparticles (NPs) decorated wood (coded as black wood membrane), for high-efficiency solar steam generation. The CuFeSe2 NPs display a desirable narrow bandgap of 0.45 eV, and can be used as a novel light absorbing material for highly efficient solar-thermal conversion. Wood served as the substrate for the CuFeSe2 NPs due to its excellent properties: a mesoporous structure, low density, heat-localization, low thermal conductivity, high hydrophilicity, and cost-effectiveness. All the properties of the designed CuFeSe2 NP-decorated wood membrane make it an ideal absorber for solar steam generation, allowing it to achieve a high solar thermal efficiency of 86.2% under 5 kW m−2. Moreover, the CuFeSe2 NP-decorated wood membrane is cost-efficient and scalable, making it a fantastic material for various applications involving light absorption, photothermal conversion, and water purification.

Graphical abstract: Narrow bandgap semiconductor decorated wood membrane for high-efficiency solar-assisted water purification

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Publication details

The article was received on 20 Jun 2018, accepted on 17 Sep 2018 and first published on 17 Sep 2018


Article type: Communication
DOI: 10.1039/C8TA05924A
J. Mater. Chem. A, 2018,6, 18839-18846

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    Narrow bandgap semiconductor decorated wood membrane for high-efficiency solar-assisted water purification

    H. Liu, C. Chen, H. Wen, R. Guo, N. A. Williams, B. Wang, F. Chen and L. Hu, J. Mater. Chem. A, 2018, 6, 18839
    DOI: 10.1039/C8TA05924A

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