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UV-driven overall water splitting using unsupported gold nanoparticles as photocatalysts

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Abstract

We confirmed that Au nanoparticles (>10 nm) exhibit photocatalytic overall water splitting into H2 and O2 simultaneously with a ratio close to 2 : 1 without the assistance of sacrificial electron donors and cocatalysts under UV illumination for the first time. The hydrogen production rate of 5.7 μmol g−1 h−1 in pure water was achieved, which is higher than that of TiO2 nanoparticles (P25, 1.2 μmol g−1 h−1). The interband transitions from 5d (valence band) to 6sp (conduction band) are responsible for this photocatalytic activity over Au nanoparticles.

Graphical abstract: UV-driven overall water splitting using unsupported gold nanoparticles as photocatalysts

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Publication details

The article was received on 22 Dec 2017, accepted on 12 Jan 2018 and first published on 12 Jan 2018


Article type: Communication
DOI: 10.1039/C7CC09770K
Citation: Chem. Commun., 2018, Advance Article
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    UV-driven overall water splitting using unsupported gold nanoparticles as photocatalysts

    B. Tian, Q. Lei, B. Tian, W. Zhang, Y. Cui and Y. Tian, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C7CC09770K

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