Facile one-pot fabrication and high photocatalytic performance of vanadium doped TiO2-based nanosheets for visible-light-driven degradation of RhB or Cr(VI)

Passivation of defect states in anatase TiO2 hollow spheres with Mg doping: Realizing efficient photocatalytic overall water splitting

“…The electrons on d orbit have abundant energy levels, which could cause more interband states [23][24][25]. Thus, doping with transition metal elements in TiO 2 is always introducing more considerable trapping states, which are widely considered to be harmful the POWS realization [26,27].…”

Sol–gel synthesis of highly TiO2 aerogel photocatalyst via high temperature supercritical drying

“…The three crystalline forms of Titania can be synthesised by various techniques. These include dry methods such as flame synthesis [4][5][6][7], chemical vapour deposition [8] and wet chemistry methods such as the chloride (TiCl 4 ) method [9], hydrothermal processing [2,[10][11][12][13][14][15][16][17][18] and the sol-gel methods [19][20][21][22][23][24][25]. The sol gel process is predominant because it has got distinct advantage from others due to mixing of the constituents at the atomic scale; simplicity of operation and low cost [3,23].…”

Synthesis of V-modified TiO2 nanorod-aggregates by a facile microwave-assisted hydrothermal process and photocatalytic degradation towards PCP-Na under solar light

“…The spectrum corresponding to V 2p 3/2 of the VTNA sample can be divided into two peaks centered at 515.9 and 517.1 eV, which are assigned to V 5+ 2p 3/2 and V 4+ 2p 3/2 incorporated into the crystal lattice of MWV05, respectively. 40,48 The tting data demonstrate that V 5+ is the dominant component on the surface of the doped TiO 2 , the content of which is approximately 3.5 times that of V 4+ , as indicated by the area under the V 2p 3/2 peak. The V precursor (NH 4 VO 3 ) was the source of V 5+ , whereas the V 4+ species might have been formed during the synthesis by the reduction of the V 5+ species.…”

“…1,15,45 The substitution of the Ti 4+ ions by the V 5+ ions may cause the delocalization of the valence electron around the V 5+ positive center and thus results in the formation of a localized surface charge on the sample. 48 Vanadium species with a mixed-valence consisting of V 4+ and V 5+ has the tendency to be on the lattice surface and may form shallow potential wells, improving the separation efficiency of photo-generated charges. 48…”

“…48 Vanadium species with a mixed-valence consisting of V 4+ and V 5+ has the tendency to be on the lattice surface and may form shallow potential wells, improving the separation efficiency of photo-generated charges. 48…”