Fabrication and photocatalytic properties of cationic and anionic S-doped TiO2 nanofibers by electrospinning

The layered double hydroxide route to Bi–Zn co-doped TiO2 with high photocatalytic activity under visible light

“…Recently, the doping of TiO 2 with metals (Ce, Mn, Fe, Co, Ni, Cu, Zn, Bi, La) [21][22][23] or non-metals (N, C, S, B, P or F) [24][25][26][27] has been widely reported. To further improve the photocatalytic activity, several authors have reported the co-doping of TiO 2 with metal and non-metal like carbon (C-Bi-TiO 2 [28,29]), nitrogen (N-Bi-TiO 2 [30], N-Zn-TiO 2 ) [31,32], Sulphur (S-Bi-TiO 2 [33] S-Zn-TiO 2 [34]) or Boron (B-Bi-TiO 2 [35]). Doping TiO 2 by the association of two or more transition metals was not widely explored other than Bi-M Co-doped TiO 2 (M Y, [36], Fe or Co, [37]) or Zn-M co-doped TiO 2 (M Sn, [38] V, [39] La, [40] Fe [41]).…”

Structural evolution of cobalt oxide–tungsten oxide nanowire heterostructures for photocatalysis

“…Among these oxides, TiO 2 is the best known photocatalyst due to its high photocatalytic activity and good photostability in aqueous medium [12,13]. However, its sustainable application is largely limited due to the wide energy band gap (only UV-active) and high charge recombination [14].…”

Chelated Nitrogen-Sulphur-Codoped TiO2: Synthesis, Characterization, Mechanistic, and UV/Visible Photocatalytic Studies

“…Ma et al [36] reported that visible light absorption in S-doped TiO 2 can be attributed to the formation of O-Ti-S or Ti-O-S bonds, which could lead partial electron transfers from sulphur atoms to titanium and oxygen atoms. Figure 7 and Table 1 illustrate that narrowing of the band gap in T FA and (NS) x -T FA is more than that in T AA and (NS) x -T AA samples; two absorption onsets were recorded in (NS) x -T FA samples (Figure 7(a) insert, Tauc plot of (NS) 0.06 -T FA powder): a long absorption tail gives the value of 2.75 eV (denoted by full line) and the small absorption tail gives the value of 2.68 eV (denoted by dotted line).…”