Journal
CHEMICAL SCIENCE
Volume 7, Issue 5, Pages 3062-3066Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc04572j
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Funding
- National Basic Research Program of China [2013CB632405]
- National Natural Science Foundation of China [21425309]
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We report the direct splitting of pure water by light-excited graphitic carbon nitride (g-C3N4) modified with Pt, PtOx, and CoOx as redox cocatalysts, while pure g-C3N4 is virtually inactive for overall water splitting by photocatalysis. The novelty is in the selective creation of both H-2 and O-2 cocatalysts on surface active sites of g-C3N4 via photodeposition triggering the splitting of water for the simultaneous evolution of H-2 and O-2 gases in a stoichiometric ratio of 2 : 1, irradiated with light, without using any sacrificial reagents. The photocatalyst was stable for 510 hours of reaction.
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