Study of various aliphatic alcohols as sacrificial agents on photoelectrochemical behavior of nickel-platinum-modified Cr-TiO2 nanotubes

Fabrication of tungsten-iron-doped TiO2 nanotubes via anodization: new photoelectrodes for photoelectrochemical cathodic protection under visible light

“…It is obvious that due to the doping with the W and Fe, the absorption spectra of W-Fe-TNT films display a significant redshift to the visible light region. Band gap energy of all samples was calculated using Tauc plot [26] which has been decreased compared to TiO 2 nanotubes (3.2 eV). Table 2 shows the calculated band gap energies of W-Fe-TNTs samples.…”

AgInS2 and graphene co-sensitized TiO2 photoanodes for photocathodic protection of Q235 carbon steel under visible light

“…However, for pure TiO 2 NTs, the low solar energy utilization efficiency and high recombination rate of photogenerated carriers result in low light quantum yield and low photocathodic protection performance. Recently, quite a few attempts have been made to enhance the solar photovoltaic transform efficiency of TiO 2 NTs, including precious metal modification (such as Ag [6], Cu [7] and Bi [8]), doping of non-metal elements (such as N [9] and F [10,11]) or metal elements (such as Cr [12], Ni [13] and Fe [14,15]), and in combination with specific semiconductors with a narrow band gap (such as WO 3 [16], CdS [17], CdSe [18], Bi 2 S 3 [19] and Ag 2 S [20]).…”