Phase transformation of TiO2 nanobelts and TiO2(B)/anatase interface heterostructure nanobelts with enhanced photocatalytic activity

Correlation between band alignment and enhanced photocatalysis: a case study with anatase/TiO2(B) nanotube heterojunction

“…However, in most cases, the surface areas of anatase/TiO 2 (B) heterojunction are usually limited to 1-5 tens of m 2 g -1 [8,12,20,21] , which are not large enough for significant enhancement of activity. Intriguingly, the titanate nanotubes precursor possesses a surface area as high as 3-4 hundreds of m 2 g -1 and may transform to TiO 2 nanotubes (2-3 hundreds of m 2 g -1 ) without significant loss in surface area.…”

“…Analogous to TiO 2 with anatase/rutile heterojunction are TiO 2 with novel anatase/TiO 2 (B) heterojunction [8][9][10][11][12][13] . For example, Yang et al [8] developed TiO 2 (B) nanofibers with a shell of anatase nanocrystals and observed its superior photocatalytic activity for degradation of sulforhodamine B to the nanofibers of either pure phase alone or P25.…”

Highly photoactive heterostructures of PbO quantum dots on TiO2

“…One practical approach to reduce the recombination probability of e À /h + pairs is by making a composite of TiO 2 with other semiconductor materials. Investigations have shown that mixed phase TiO 2 26 with appropriate weight ratio showed better performance than desired anatase phase alone. 19,20 Composite heterostructures with favorable band alignment have variety of applications such as catalysts, sensors, solar and photoelectrochemical cells.…”

High ethanol sensitivity of Palladium/TiO2 nanobelt surface heterostructures dominated by enlarged surface area and nano-Schottky junctions

“…In other word, the surface-coarsened TiO 2 consists of the anatase titanium dioxide phase only. The disappearance of TiO 2 (B) likely results from corrosion by H 2 SO 4[39].…”