Investigation of multielemental catalysts based on decreasing the band gap of titania for enhanced visible light photocatalysis

Antimicrobial Double-Layer Coating Prepared from Pure or Doped-Titanium Dioxide and Binders

“…We also measured the 1s XPS spectra of C, B, and F in the prepared codoped-TiO 2 samples, recorded a peak of 285.6 eV for C-Ti, a peak at 191.7 eV for B-Ti, and a peak around 684.5 eV for F-Ti, as well as another peak of 685 eV in the "shoulder" of asymmetrical line for F (standing for F-Ti-O bond). These data were very close to that shown in [15], where 402 eV was assigned to N-Ti, 191 and 187.5 eV to B-Ti, 285 eV to C-Ti, and 685 eV to F-Ti. Similar results were also published by other laboratories [24][25][26][27][28].…”

“…The concentrations of the 4 elements in the prepared samples reduced in the sequence of C > F > N >B, which matches the order in the starting material TEATFB. In a previous publication [15], Lee et al reported the order of C > B > F > N found in doped-TiO 2 powders that were prepared by the same method as ours. The authors claimed that the volatilization of F and N during calcination was the cause of the reduction of the amounts measured for F and N. However, we found it only occurred when the calcination temperature up to 1000 • C. The XPS spectra of the Ti 2p levels of pure TiO 2 and doped-TiO 2 were shown in Figure 2.…”

“…C, N, B, F-codoped TiO 2 particles were prepared as described by Pelaez and Im et al [10,15]. Briefly, TiO 2 powders and TEATFB were mixed at an appropriated ratio and then dried at 110 • C followed by calcination at 600 • C for 2 h under vacuum at the heating rate of 10 • C/min.…”

Anatase-stabilised AlxTi1−xO2 photoanodes containing uniform spherical particles for efficient dye-sensitized solar cells

“…Second, Al acts as a tunnelling barrier, slowing the rate of electron interception by the redox electrolyte. The electrons moving to the dye or electrolyte are transferred through conduction band of TiO 2 because of the effects of dopant [29]. Third, XRD analysis showed that Al ions stabilised anatase phase and reduced crystallite size.…”

Pt nanoparticles on titania nanotubes prepared by vapor-phase impregnation–decomposition method

“…The interest in titania nanotubes (TNTs) has grown explosively in the last decade because of their high technological potential in diverse areas such as in solar energy conversion [1], hydrogen sensing [2], lithium storage [3], photocatalysis [4], biocompatibility [5,6] and catalysis [7,8]. Titania nanotubes or nanofibers obtained by a hydrothermal treatment in NaOH solution exhibit specific surface areas as large as 400 m 2 /g as a result of their internal and external porosities.…”