Journal
NANO ENERGY
Volume 27, Issue -, Pages 138-146Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.06.042
Keywords
O-g-C3N4; Monolayer; Photocatalytic hydrogen evolution; External quantum efficiency
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Funding
- National Natural Science Foundation of China [21476097]
- U.S. Air Force BRI Grant [FA9550-14-1-0268]
- Science and Emerging Technology of 2D Atomic Layered Materials and Devices, six talent peaks project in Jiangsu Province [2014-JNHB-014]
- BSRF
- SRRC
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Oxygen-modified monolayer g-C3N4 materials (abbreviated as O-g-C3N4) with high crystallinity in a high yield are prepared via thermal oxidation. The partial oxygenation of g-C3N4 was simultaneously achieved, providing the opportunity to collaboratively affect both structure and electron for photocatalytic hydrogen evolution. The O-g-C3N4 monolayer exhibited a production rate of similar to 44.37 mmol/g (similar to 8874.7 mu mol/h g) for hydrogen evolution leading to the highest external quantum efficiency (EQE) of 13.7% (at 420 nm) of the reported g-C3N4 nanosheets in a 5 h duration under visible light irradiation. More promisingly, the photocatalytic reaction proceeded for more than 25 h without performance degradation. (C) 2016 Elsevier Ltd. All rights reserved.
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