Flexible N–doped TiO2/C ultrafine fiber mat and its photocatalytic activity under simulated sunlight

B, N-codoped 3D micro-/mesoporous carbon nanofibers web as efficient metal-free catalysts for oxygen reduction

“…The absorption bands near 1580 and 1250 cm À1 are ascribed to C]N and CeN bonds, respectively. The weak C]N bond in CNFs originates from the transformation of C^N bond during heat treatment [26,33]. As can be seen, the peak intensity of C]N around 1580 cm À1 for BNC f -NA is stronger and sharper than those of BNC f -N and CNFs, demonstrating the effective incorporation of N element by activation in NH 3 .…”

“…We have prepared hierarchically porous SiC ultrafine fibers [24], N-doped TiO 2 nanofibers [25], N-doped TiO 2 /C nanofibers [26] and corresponding 3D non woven webs. It is worthy to note that we designed and fabricated multi-needle electrospinning setup [27].…”

Product selectivity of visible-light photocatalytic reduction of carbon dioxide using titanium dioxide doped by different nitrogen-sources

“…Broad peaks ranging from 400 to 800 cm −1 are assigned to the Ti O stretching vibrations of TiO 2 in both N TiO 2 and pristine TiO 2 . Peaks centered at about 1600 cm −1 result from the H O H bending vibrations of surface-adsorbed water molecules and the NH groups in the Ti N O linkage of both N TiO 2 [14,24], while the peaks at 3410 cm −1 arise from OH stretching [25]. Peaks located at 1050 cm −1 derive from the N O vibrations of the NH 2 groups in the Ti O N linkage of both N TiO 2 [26].…”

Choline Chloride Assisted Synthesis of N and Metal Codoped TiO2 and their Photocatalytic Activity under Visible Light

“…Doping of TiO 2 with nonmetals, particularly nitrogen, has been explored extensively in literature to enhance its visible light absorption . There are several papers showing the fact that the incorporation of nitrogen reduces band gap by forming an impurity level in between the valence band (VB) and conduction band (CB) of titania . For the effective incorporation of nitrogen in the crystal lattice of titania, researchers have used a variety of nitrogen doping sources .…”