Preparation and photocatalytic activity of TiO2-exfoliated graphite oxide composite using an ecofriendly graphite oxidation method

Modulating the photocatalytic activity of TiO2 (P25) with lanthanum and graphene oxide

“…All composites containing GO are greyish, so it expected that the high absorption of these photocatalysts is due to the is presence of GO [35]. According to previous reports [31,36], chemical Ti-O-C bonds were formed when the photocatalysts were prepared under the same experimental conditions. In contrast, the TiO 2 with La, which does not change the final color of the composite, showed low absorption in the visible range, similar to TiO 2 P25, although PLa 2 -TiO 2 had a slightly higher absorption in the visible region.…”

Graphene-Based Catalysts for Ozone Processes to Decontaminate Water

“…The ozonized expanded graphite has been applied in the electrochemical oxidation of phenol showing higher degradation efficiency than non-treated expanded graphite. Baldissarelli et al [77] synthesized GO (or expanded exfoliated graphite oxide, as they named it) by ozonation of a powdered expanded graphite oxide during 14 h, (1 L min −1 gas flow rate, ozone concentration not given) followed by 1 h sonication. They subsequently used TiO 2 P25 to prepare TiO 2 -GO composites by hydrothermal and reflux methods.…”

Antifungal and Photocatalytic Activity of Smart Paint Containing Porous Microspheres of TiO2

“…Particle size and surface area clearly play an important role in the dispersion and polymer-titanium dioxide interactions 47 . This is due to the fact that nanoparticles, such as TiO 2 P25 (~25 nm), have a large outer surface area (52.7 m 2 g -1 ), being generally characterized as non-porous 1,48 . Thus, the µTiO 2 in this study, due to the micrometric dimensions and mesoporosity, has a smaller outer surface area, most of the surface area of this photocatalyst being located inside the mesopores.…”