For comparison, Figure ) shows the evolution of conductance with increasing DUV exposure times for multi-layered (GO/rGO)/TNR (orange) and (GO/rGO)/TNP (blue) films. Overall higher conductances were observed for the (GO/rGO)/TNR films than for TNPbased films. For the single-layered TNR film, the conductance was up to 8 times higher than for the corresponding TNP film. Interestingly, a maximum in conductance can be observed for the single-layered films, followed by a steady decrease with increasing DUV exposure time. We attribute this decrease in conductance to the re-oxidation and the photocatalytic degradation of the rGO/GO network with prolonged DUV exposure. Similar effects were reported for the reduction of GO sheets attached to titania nanoparticles in ethanol or water and explained by the initial formation of rGO followed by its degradation to smaller fragments and finally to carbon dioxide. In case of the (GO/rGO)/TNP thin film, the maximum conductance was reached after ∼2 h of DUV exposure, and after ∼3 h in case of the corresponding (GO/rGO)/TNR thin film. According to our discussion above, the lower mass fraction of organic ligands on the TNP surface compared to the TNRs, assessed via TG analysis (cf. the Supporting Information, Section S1) is considered to be a limiting factor for the rGO formation resulting in the premature degradation of rGO once the organic ligand is consumed. In case of the multilayered hybrids, on the other hand, the conductance reaches saturation after a few hours of DUV exposure. Also in the case of the multilayered films, the conductance slowly decreased after several hours of DUV exposure. The overall higher conductance of the TNR-based films compared to the TNP-based films is most likely related to the smaller dimensions of the TNRs. Due to their higher surface-to-volume ratio, the TNRs offer more interfacial contact points to GO than the TNPs. Therefore, the reduction to rGO can occur more uniformly throughout the GO layer. In addition, the TNCs have different crystal structures and exposed facets, imparting different photocatalytic efficiencies.