Graphene-wrapped TiO₂nanofibers with effective interfacial coupling as ultrafast electron transfer bridges in novel photoanodes

Fabrication and Photocatalytic Properties of TiO2/Reduced Graphene Oxide/Ag Nanocomposites with UV/Vis Response

“…Four typical peaks at 147 (E g ), 398 (B 1g ), 514 (A 1g + B 1g ), and 638 cm -1 (E g ) are ascribed to anatase TiO 2 ( Figure 6, a). [37,50,51] The Raman spectra of the TiO 2 /GO-2 (TGO-2), TG-2, and TGA-2 samples are shown in the inset of Figure 6 . [52] The I D /I G intensity ratio of the TG-2 sample shows a larger increase after thermal treatment than TGO-2, and consequently, it has fewer defects.…”

“…[28] According to the literature, the morphology of the nanocomposite has a significant influence on its performance. [29][30][31][32][33][34][35][36][37] The two-dimensional and three-dimensional structure of graphene/TiO 2 , resulting from random pathways in these composites, can dramatically slow down the rate of electron transfer, which thus results in unexpected loss of electrons compared to the one-dimensional structure. [35][36][37] Furthermore, to investigate the effect of morphology on the performance of one-dimensional graphene/ TiO 2 structures, several types of morphologies including nanoparticles, nanowires, nanofibers, and other morphologies have been synthesized.…”

“…[29][30][31][32][33][34][35][36][37] The two-dimensional and three-dimensional structure of graphene/TiO 2 , resulting from random pathways in these composites, can dramatically slow down the rate of electron transfer, which thus results in unexpected loss of electrons compared to the one-dimensional structure. [35][36][37] Furthermore, to investigate the effect of morphology on the performance of one-dimensional graphene/ TiO 2 structures, several types of morphologies including nanoparticles, nanowires, nanofibers, and other morphologies have been synthesized. [29][30][31][32][33][34][35] Among them, nanowires and nanofibers show better performance owing to their high surface to volume ratio and their effective electrontransfer pathways.…”

TiO2 nanofibers heterogeneously wrapped with reduced graphene oxide as efficient Pt electrocatalyst supports for methanol oxidation

“…In particular, graphene-wrapped TiO 2 nanofibers and mesoporous microspheres have attracted increased attention in recent years [20,42]. However，the graphene-wrapped hybrid cannot exert the SMSI effect and hinders the performance of the TiO 2 electrocatalyst support in CO formation [43].…”

Graphene Decorated TiO2 Nanorods Photo-Anode for Solar Hydrogen Production

“…Among the carbon allotropy, sp 2 hybridized graphene sheets have been much attention due to its high electrical conductivity (10 6 S/cm) and carrier mobility (200,000 cm 2 /V·s). In this work, we demonstrated that the improved charge transfer and collection in PEC system by using graphene decorated TiO2 nanorods photo-anode [1][2][3] .…”