Abstract
Ag nanoparticles (NPs) grafted on TiO2 nanorods (NRs) using electroactive biofilms (EABs) were assessed as photoanodes for water splitting under solar light irradiance. EABs-assisted bio-reduction leads to the uniform decoration of spherical Ag NPs (10–40nm) and stronger attachment to the Ag–TiO2 interface due to the prior adsorption of Ag+ ions. Plasmonic interaction of Ag NPs with TiO2 NRs showed stronger adsorption in visible range due to surface plasmon resonance. Compared to TiO2 NRs, Ag–TiO2 NRs/FTO exhibited 8 times higher current density under solar light irradiation due to enhanced visible light absorption, SPR effect, and efficient electron-hole separation.
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