Beilstein J. Nanotechnol.2014,5, 1167–1174, doi:10.3762/bjnano.5.128
) 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.
Keywords: cobalt salts; earth-abundant catalyst; photocatalysis; photocatalytic hydrogen evolution; water-dispersiblesulfonated-graphene; Introduction
, Beijing 100190, P. R. China 10.3762/bjnano.5.128 Abstract 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-dispersiblesulfonated
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 (H2/Co
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Figure 1:
FTIR (a) and XPS (b) spectra of GO, G-SO3 and G-SO3 after photocatalytic hydrogen evolution