Improving the visible light photocatalytic activity of TiO2 nanotubes upon decoration with Sb2S3 microcrystalline

A Simple Fabrication of Sb2S3/TiO2 Photo-Anode with Long Wavelength Visible Light Absorption for Efficient Photoelectrochemical Water Oxidation

“…So far, many efforts have been devoted to noble metal loading [7][8][9][10], semiconductor recombination [11][12][13][14][15], doping [16][17][18][19] and sensitization [13,[19][20][21][22][23][24][25][26][27][28][29][30] to enlarge the spectral response range due to improve its PEC performance for efficient water oxidation and to promote electron-hole pair separation. Among these, the sensitization of TiO 2 utilizing chalcogenide-based (Sb 2 S 3 ) catalysts has received significant attention [19][20][21]31,32]. Sb 2 S 3 possesses a suitable bandgap (1.6-1.9 eV) and a high absorption coefficient (105 cm −1 ) in the visible region, which benefits from absorbing the whole visible and near-infrared range of the solar spectrum.…”