Structural and textural characterization of sol–gel prepared nanoscale titanium–chromium mixed oxides

Preparation of porous MTiO (M = Cr, Mo, or W) composite oxides from a mesostructured material of titanium oxysulfate and surfactant micelles based on a wall ion exchange–calcination method

“…At pH sol(e) 6.9 or above, the surface areas decreased and the pore sizes became larger. Both values in the former region were comparable to those previously reported by several researchers [7,8],…”

“…Porous TiO 2 -based composite oxides have gathered much attention for their use as catalysts and supports in photo-catalysis [1][2][3][4] and in the selective catalytic reduction of nitrogen oxide with ammonia [5,6]. These oxides can be prepared by various methods [4,[7][8][9]. For example, a sol-gel method using inorganic precursors and templates [10] produced Cr-Ti mixed oxide with a surface area of 317 m 2 g -1 and a pore diameter of 2.5 nm [7].…”

“…These oxides can be prepared by various methods [4,[7][8][9]. For example, a sol-gel method using inorganic precursors and templates [10] produced Cr-Ti mixed oxide with a surface area of 317 m 2 g -1 and a pore diameter of 2.5 nm [7]. A sol-gel hydrolysis method using n-alkylamine as a template produced a microporous Ti-Cr mixed oxide with a surface area of 494-564 m 2 g -1 [8].…”

“…In the preparation of TiO 2 using TiOSO 4 [27], it was reported that the hydrolysis at pH 4-6 produced a pure anatase phase after the calcinations, whereas that at pH 7-8 primarily produced the amorphous phase. Others reported that the introduction of chromium ions into TiO 2 prevented formation of the anatase structure [7,28] Table S3. The amount of carbon remaining in the former sample was 9.23 mmol g -1 , while no carbon was detected in the latter sample.…”

Optical Detection of Protein Adsorption on Doped Titanium Surface

“…The doping of titanium is performed typically by inserting impurities like N, Nb, Zr, Ta, Al, Cr and V, into the titanium crystal structure. (Archana et al, 2010;Barajas-Ledesma et al, 2010;Cantau et al, 2010;Choi et al, 2010;Czoska et al, 2011;Darriba et al, 2009;Huang et al, 2010;Khaleel et al, 2010;Martin et al, 2006;Shaama, 2005) Substantial progress has been made in understanding adhesion process on surfaces after or while immersed in liquids. In these research a number of developed techniques such as, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), ellipsometry, fourier transform infrared attenuated total reflectance (FTIR/ATR), quartz crystal microbalance (QCM), surface plasmon resonance (SPR), dual polarization interferometry, total internal reflectance fluorescence (TIRF), voltammetry and electrochemical impedance spectroscopy (EIS) have been deployed.…”