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Issue 48, 2017
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Floating rGO-based black membranes for solar driven sterilization

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Abstract

This paper presents a new steam sterilization approach that uses a solar-driven evaporation system at the water/air interface. Compared to the conventional solar autoclave, this new steam sterilization approach via interfacial evaporation requires no complex system design to bear high steam pressure. In such a system, a reduced graphene oxide/polytetrafluoroethylene composite membrane floating at the water/air interface serves as a light-to-heat conversion medium to harvest and convert incident solar light into localized heat. Such localized heat raises the temperature of the membrane substantially and helps generate steam with a temperature higher than 120 °C. A sterilization device that takes advantage of the interfacial solar-driven evaporation system was built and its successful sterilization capability was demonstrated through both chemical and biological sterilization tests. The interfacial evaporation-based solar driven sterilization approach offers a potential low cost solution to meet the need for sterilization in undeveloped areas that lack electrical power but have ample solar radiation.

Graphical abstract: Floating rGO-based black membranes for solar driven sterilization

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Publication details

The article was received on 05 Oct 2017, accepted on 19 Nov 2017 and first published on 20 Nov 2017


Article type: Paper
DOI: 10.1039/C7NR06861A
Citation: Nanoscale, 2017,9, 19384-19389
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    Floating rGO-based black membranes for solar driven sterilization

    Y. Zhang, D. Zhao, F. Yu, C. Yang, J. Lou, Y. Liu, Y. Chen, Z. Wang, P. Tao, W. Shang, J. Wu, C. Song and T. Deng, Nanoscale, 2017, 9, 19384
    DOI: 10.1039/C7NR06861A

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