Abstract
We discuss the photoelectroanalytical performance of a brookite-phase titanium dioxide (TiO(2)) platform electrodeposited onto graphene foam (GF) at low temperatures. The scalable electrosynthesis process eliminates the need for thermal annealing, which is impractical for carbon-based electrodes. Films resulting from a 10 min electrodeposition (TiO(2)-10/GF) exhibit enhanced photocurrents, reaching 170 μA cm(-2) (GEO)-twice the value for TiO(2) films on traditional screen-printed carbon electrodes (82 μA cm(-2) (GEO)). The increased photocurrent density makes TiO(2)-10/GF ideal for on-site photoelectrochemical biosensors as it allows for the use of compact systems with low-power LEDs.