In this talk, we focus on two representative nanorod-based solar-driven H2 generation systems. The first system consists of CdS nanorods (NR) with directly attached Pt nanoparticles at the tip of rod. The second system consists of three components: CdSe/CdS dot-in-rod (DIR) nanorods as the light-harvesting and charge separation center, methyviologen (MV2+) as the electron mediator and Pt nanoparticles as the H2 evolution catalyst. The H2 evolution activity for CdS-Pt has been reported previously and we focused on the exciton quenching mechanism and carrier dynamics. For CdSe/CdS DIRs, we compared their MV+� radical generation and H2evolution performances with molecular dyes and other nanocrystals and investigated the origins of the different H2 generation efficiencies in these systems by time-resolved spectroscopy.

Multicomponent quantum confined semiconductor nanorods: From charge separation dynamics to solar-to-fuel conversion

246th National Meeting (2013)

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