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Issue 12, 2017
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Confinement effect of monolayer MoS2 quantum dots on conjugated polyimide and promotion of solar-driven photocatalytic hydrogen generation

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Abstract

A monolayer MoS2 quantum dot confined polyimide (MQDs/PI) photocatalyst was synthesized by using a facile immersion-hydrothermal method. The investigations on the optical and electronic properties of MQDs/PI composites reveal that the strong quantum confinement effect of MQDs results in a blue-shift of the absorption band edge of PI, and the interfacial electronic interaction between MQDs and PI improves the charge transfer rate of MQDs/PI. The ultra-small size of 3.0 nm and perfect crystals of MQDs endow MQDs/PI composites with plenty of active sites and fast charge transfer, thus resulting in a 360% enhancement in photocatalytic hydrogen production compared with that of Pt/PI at the same loading amount of Pt. This discovery provides a new clue for the development of an efficient and sustainable non-noble metal photocatalyst.

Graphical abstract: Confinement effect of monolayer MoS2 quantum dots on conjugated polyimide and promotion of solar-driven photocatalytic hydrogen generation

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Publication details

The article was received on 31 Dec 2016, accepted on 20 Feb 2017, published on 20 Feb 2017 and first published online on 20 Feb 2017


Article type: Paper
DOI: 10.1039/C6DT04916H
Citation: Dalton Trans., 2017,46, 3877-3886
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    Confinement effect of monolayer MoS2 quantum dots on conjugated polyimide and promotion of solar-driven photocatalytic hydrogen generation

    C. Ma, H. Zhu, J. Zhou, Z. Cui, T. Liu, Y. Wang, Y. Wang and Z. Zou, Dalton Trans., 2017, 46, 3877
    DOI: 10.1039/C6DT04916H

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