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Plasmonic Heating from Indium Nanoparticles on a Floating Microporous Membrane for Enhanced Solar Seawater Desalination

Abstract

Passive solar evaporation represents a promising and environmentally benign method of water purification/desalination. Plasmonic nanoparticles have been demonstrated as an effective approach for enhancing solar steam generation through plasmonic heating effect, nonetheless the efficiency is constrained by unnecessary bulk heating of the entire liquid volume, while the noble metals commonly used are not cost-effective in terms of availability and the the sophisticated preparation. Herein, a paper-like plasmonic device consisting of a microporous membrane and indium nanoparticles (In NP/MPM) is fabricated through a simple thermal evaporation method. Due to the light-weight and porous nature of the device, the broad band light absorption property, and theoretically the excellent plasmonic heating effect from In NP which could be even higher than gold, silver and aluminium nanoparticle, our device can effectively enhance solar water evaporation by floating on water surface and its utility has been demonstrated in solar desalination of a real seawater sample. The durability of the device in solar seawater desalination has also been investigated over multiple cycles with stable performances. This portable device could provide a solution for individuals to do water/seawater purification in under-developed areas with limited/no access to electricity and centralized drinking water supply.

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Publication details

The article was accepted on 24 Jul 2017 and first published on 03 Aug 2017


Article type: Communication
DOI: 10.1039/C7NR05149B
Citation: Nanoscale, 2017, Accepted Manuscript
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    Plasmonic Heating from Indium Nanoparticles on a Floating Microporous Membrane for Enhanced Solar Seawater Desalination

    L. Zhang, J. Xing, X. Wen, J. W. Chai, S. Wang and Q. Xiong, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR05149B

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