Photocatalysis have been extensively studied as method for solar hydrogen generation. However, the poor light absorption in visible region and short lifetime of excited charge are the major factors that limiting reaction efficiency. We have recently demonstrated a general strategy to increase the hydrogen efficiencies under visible light irradiation by sensitizing of catalyst with dye and promoting charge transfer using graphene. The graphene serves as highly conductive carries that can considerably increase the rate of charge transfer and their lifetimes and inhibit recombination of electron and hole. These dye-sensitized graphene hybrid catalysts showed signiﬁcantly enhanced performance for solar hydrogen generation. The enhanced photoelectrochemical performance of sensitized catalyst was also attributed to the improved charge separation. This talk will highlight the recent results directed at developing graphene-based dye sensitized catalysts and co-catalysts for solar hydrogen generation.

Sensitized graphene hybrid catalysts and co-catalysts for solar hydrogen generation

249th National Meeting (2015)

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