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Eosin Y-sensitized partially oxidized Ti3C2 MXene for photocatalytic hydrogen evolution

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Abstract

Ti3C2, though one of the most extensively studied 2D MXenes, is rarely reported in dye-sensitized photocatalysis. Platinum is commonly used as a co-catalyst in photocatalytic hydrogen evolution but it increases the cost and hence restricts the commercialization of this technology. Eosin Y (EY) is widely studied in dye-sensitized systems as it is not only low-cost and easily commercially available, but also exhibits excellent visible light absorption ability. Herein, we oxidized Ti3C2 MXene in water at 60 °C for different times, to form TiO2/Ti3C2 on amorphous carbon (AC) composites. The oxidized MXene was used as a photocatalyst in a dye-sensitized system for hydrogen evolution to replace noble metal co-catalysts such as Pt. The highest hydrogen production rate of 33.4 μmol h−1 g−1 was achieved by the TiO2/Ti3C2@AC-48h composite with the sensitization of 1 mM EY, which was 110 times higher than that of oxidized Ti3C2 without EY. This work shows the potential of 2D MXenes used in dye-sensitized photocatalysis for hydrogen evolution.

Graphical abstract: Eosin Y-sensitized partially oxidized Ti3C2 MXene for photocatalytic hydrogen evolution

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Publication details

The article was received on 30 Oct 2018, accepted on 22 Nov 2018 and first published on 23 Nov 2018


Article type: Paper
DOI: 10.1039/C8CY02240B
Citation: Catal. Sci. Technol., 2019, Advance Article
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    Eosin Y-sensitized partially oxidized Ti3C2 MXene for photocatalytic hydrogen evolution

    Y. Sun, Y. Sun, X. Meng, Y. Gao, Y. Dall'Agnese, G. Chen, C. Dall'Agnese and X. Wang, Catal. Sci. Technol., 2019, Advance Article , DOI: 10.1039/C8CY02240B

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