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Ag/diatomite for highly efficient solar vapor generation under one-sun irradiation

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Abstract

Efficient solar vapor generation under normal one-sun illumination is widely expected to relieve water scarcity all over the world. Herein, we prepare a highly efficient solar vapor generator via the deposition of Ag nanoparticles on diatomite. Ag/diatomite combined with a filter paper, an airlaid paper and a polystyrene foam showed excellent vapor generation performance (the evaporation rate and efficiency (η) were ∼1.39 kg m−2 h−1 and ∼92.2%, respectively) under one-sun illumination at room temperature (25.0 °C). To the best of our knowledge, these values outperform most of the previously reported vapor generation performances and vapor generation efficiencies (if not all). Compared to the performance of Ag/SiO2 (η ≈ 66.2%) and commercial Ag nanoparticles (η ≈ 72.6%), the outstanding performance of Ag/diatomite was attributed to the synergy of the localized surface plasmon resonance (LSPR) effect of Ag nanoparticles and the confinement effect in micrometer size-diatomite. Considering the low cost ($10 per ton) and large-scale availability of diatomite as well as the easy construction of the vapor generation configuration that we proposed, this study provides prospects for practical applications towards relieving water scarcity.

Graphical abstract: Ag/diatomite for highly efficient solar vapor generation under one-sun irradiation

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Publication details

The article was received on 10 Jul 2017, accepted on 01 Aug 2017 and first published on 03 Aug 2017


Article type: Communication
DOI: 10.1039/C7TA05976K
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Ag/diatomite for highly efficient solar vapor generation under one-sun irradiation

    J. Fang, Q. Liu, W. Zhang, J. Gu, Y. Su, H. Su, C. Guo and D. Zhang, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA05976K

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