Journal
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
Volume 5, Issue -, Pages 1167-1174Publisher
BEILSTEIN-INSTITUT
DOI: 10.3762/bjnano.5.128
Keywords
cobalt salts; earth-abundant catalyst; photocatalysis; photocatalytic hydrogen evolution; water-dispersible sulfonated-graphene
Funding
- Ministry of Science and Technology of China [2014CB239402, 2013CB834505, 2013CB834804]
- National Natural Science Foundation of China [21372232, 21090343, 91027041, 21390404, 51373193]
- Chinese Academy of Sciences
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There is tremendous effort put in the pursuit for cheap and efficient catalysts for photocatalytic hydrogen evolution systems. Herein, we report an active catalyst that uses the earth-abundant element cobalt and water-dispersible sulfonated graphene. The photocatalytic hydrogen evolution activity of the catalyst was tested by using triethanolamine (TEOA) as electron donor and eosin Y (EY) as the photosensitizer under LED irradiation at 525 nm. Hydrogen was produced constantly even after 20 h, and the turnover number (TON) reached 148 (H-2/Co) in 4 h with respect to the initial concentration of the added cobalt salts was shown to be 5.6 times larger than that without graphene.
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