Water-phase strategy for synthesis of TiO2–graphene composites with tunable structure for high performance photocatalysts

Hydrothermal synthesis of magnetic CoFe2O4/graphene nanocomposites with improved photocatalytic activity

“…As could be seen, the I D /I G for the CoFe 2 O 4 /graphene nanocomposite was 1.05, which was higher than that of the GO (0.86). This result indicated that the reduction of the GO to graphene decreased the structural disorder of the graphene since abundant oxygen groups have been removed during the hydrothermal reduction process [33]. Meanwhile, it was also observed that I D /I G for the CoFe 2 O 4 /graphene nanocomposite was lower than that of the chemically exfoliated graphene (1.21).…”

Grinding combined melt-diffusion synthesis of sulfur/P25 heterostructure for enhanced photocatalytic activity under visible light

“…4shows the XPS spectra for Ti, O, and S core levels of P25, sulfur and sulfur/P25 heterostructure. Two peaks of bare P25 at 458.7 and 464.3 eV are assigned to the Ti 2p 3/2 and Ti 2p 1/2 spin-orbital splitting photoelectrons in the Ti 4+ chemical state, respectively [36,37]. Compared with the binding energies of bare P25, the negative shift of Ti 2p 3/2 (−0.2 eV) and Ti 2p 1/2 (−0.1 eV) for PS 1.4 heterostructure, indicates strong interactions between sulfur and P25 in heterostructure.…”

Ternary P25–graphene–Fe 3 O 4 nanocomposite as a magnetically recyclable hybrid for photodegradation of dyes

“…Recently, the TiO 2 and carbon (TiO 2 -C) composites have been proven to be potential photocatalysts in promoting charge separation, which includes TiO 2 -mounted activated carbon, carbon-doped TiO 2 , carbon-coated TiO 2 , and graphene-TiO 2 nanocomposites [16][17][18][19][20]. Among these, graphene-TiO 2 composites showed fantastic activity for the excellent mechanical, thermal, optical, and electronic properties of graphene [21][22][23][24][25][26]. In our previous work, graphene-TiO 2 nanocomposites exhibited higher photocatalytic activity to methyl orange than pure TiO 2 .…”