Photocatalytic water splitting of TiO₂ nanotubes powders prepared via rapid breakdown anodization sensitized with Pt, Pd and Ni nanoparticles

Flower-like hydrogen titanate nanosheets: preparation, characterization and their photocatalytic hydrogen production performance in the presence of Pt cocatalyst

“…Among them, TiO 2 acted as the most extensively used catalyst for photocatalysis owing to its good photocatalytic activity, high stability, non-toxicity and lowcost. [7][8][9][10][11][12][13] However, the photocatalytic activity for H 2 production over TiO 2 is very low, mainly due to the rapid recombination of photogenerated electrons and holes. 14 So there are several ways to overcome these shortcomings and greatly enhance photocatalytic H 2 production activity, such as dye sensitization, 15 semiconductor composite 16 and cocatalyst modication.…”

Recent advances in the use of TiO2 nanotube powder in biological, environmental, and energy applications

“…92 Moreover, band gap engineering via doping, decoration and/or alloying with different elements (metals or non-metals) was reported to extend its light harvesting into the visible region of the solar spectrum. 93,94 David et al 95 reported the impact of loading TNTs, fabricated via rapid breakdown anodization, with Pt, Pd and Ni nanoparticles on the efficiency of hydrogen generation via solar water splitting. The as-prepared TNTs were annealed at 450 C for 3 h then sensitized with the metal nanoparticles through the chemical reduction approach using NaBH 4 .…”

“…This behaviour was attributed to the created impurity level, which was far below the CB of the TNTs, making it difficult for the photogenerated electrons in the CB to be transferred to the Fermi level of the Ni NPs. 95 For non-metal doping, Preethi et al showed that N-doped triphase (anatase-rutile-brookite) TNTP exhibited a superior photocatalytic activity for solar water splitting compared to the pristine triphase TNTs. This enhancement was ascribed to engineering the band gap by N-doping from 3.06 eV down to 2.87 eV, which resulted in extending the photocatalytic activity into the visible region of the solar spectrum as illustrated by the charge transfer mechanism shown in Fig.…”

Impedance studies of biosynthesized Na0.8Ni0.33Co0.33Mn0.33O2applied in an aqueous sodium‐ion battery

“…TiO 2 is a nontoxic, chemically stable material that can be easily prepared in so much as it is naturally abundant. It is used in various fields such as solar cells, 41,42 photocatalysis, 43 water splitting, 44 and lithium‐ion battery 45 among others. The successful use of TiO 2 in lithium‐ion batteries spurred intense research for its application as a negative electrode in sodium‐ion batteries 46,47 .…”