A facile and fast synthesis of novel composite Pt–graphene/TiO2 with enhanced photocatalytic activity under UV/Visible light

Noble metal modified reduced graphene oxide/TiO2 ternary nanostructures for efficient visible-light-driven photoreduction of carbon dioxide into methane

“…In overall, the C element originated from the rGO sheets, while the Ti and O elements were from the TiO 2 nanoparticles. The strong K␣ and K␤ peaks from Ti element appeared at 4.5 and 4.9 keV with a moderate K␣ peak from O element at 0.54 keV [49]. Fig.…”

Low temperature acetylene gas sensor based on Ag nanoparticles-loaded ZnO-reduced graphene oxide hybrid

“…No spurious diffractions due to crystallographic impurities of ZnO, and no significant variations of ZnO peak positions were observed in the samples. However, the broadened peaks of ZnO (1 0 0), (0 0 2) and (1 0 1) in the hybrid samples indicated small but finite degradation in the crystalline structure of ZnO due to distortion of Ag and Gr sheets [19,37]. Conversely, a noticeable intensity increase in Ag peaks was observed with increasing amounts of Ag in the hybrid.…”

“…The absence of any Ag 2 O peaks suggested no oxidation of Ag and highlighted the thermal stability of Ag in the final product [27]. The characteristic reflection peak of Gr (0 0 2) appeared at 2Â = 26.2 • , suggesting chemical reduction of oxygen-containing functional groups of GO, reduced and restacked into an ordered crystalline structure of Gr [37].…”

Organic pollutants removal in wastewater by heterogeneous photocatalytic ozonation

“…The enhanced performance was attributed to the promoting effect of doping Al 3+ and Fe 3+ in the generation of hydroxyl radicals. TiO 2 -graphene nano composites have also been used in the photocatalytic process under UV with enhanced TOC removal in wastewater treatment, and they are also very sensitive to visible light Zhao et al, 2012;Ullah et al, 2013;Wang et al, 2013b). This is possibly because the photo-excited electrons transferred from TiO 2 to graphene to hinder electron-hole recombination, and thereby enhanced oxidative reactivity of the process.…”