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High contrast gasochromism of wet processable thin film with chromic and catalytic nanoparticles

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Abstract

We demonstrate high contrast gasochromism in a thin film produced by combining chromic Prussian blue nanoparticles and catalytic platinum nanoparticles, applied by sequential wet-coating onto a substrate. The contrast ratio at 700 nm reaches 80. The cycle stability exceeds 200 cycles. H2 with low concentration (4%-H2) and air can drive the change of colour between blue and colourless. We also reveal via X-ray diffraction, Fourier-transform IR spectroscopy, and investigation of the redox potential of a series of metal-substituted Prussian blue analogues, that bleaching results from the reduction of Prussian blue nanoparticles by protons generated using platinum nanoparticles.

Graphical abstract: High contrast gasochromism of wet processable thin film with chromic and catalytic nanoparticles

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Publication details

The article was received on 06 Feb 2018, accepted on 13 Apr 2018 and first published on 16 Apr 2018


Article type: Paper
DOI: 10.1039/C8TC00648B
Citation: J. Mater. Chem. C, 2018, Advance Article
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    High contrast gasochromism of wet processable thin film with chromic and catalytic nanoparticles

    C. Hu, Y. Yamada, K. Yoshimura, A. Takahashi, H. Watanabe, K. Tajima and T. Kawamoto, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C8TC00648B

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