Effective role of trifluoroacetic acid (TFA) to enhance the photocatalytic activity of F-doped TiO2 prepared by modified sol–gel method

Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications

“…Subsequently, researchers began to study various non-metal-based photocatalysts [6,7]. Doping of semiconductors (e.g., TiO 2 , ZnO, ZrO 2 ) with non-metals such as C [8], S [9,10], N [11], B [12], F [13,14] and P [15] helped to improve the photocatalytic efficiency. Moreover, non-metals could extend the visible region absorption close to the edge of the valence band, which is more advantageous than metal in improving the visible-light response [16,17].…”

CuZrO3nanoparticles catalyst in aerobic oxidation of vanillyl alcohol

“…It is worthwhile to mention that shorter bond lengths of Cu-O facilitates a blue Raman shi as a result of a stress and strain phenomenon. 43 Furthermore, it was noticed that a larger stoichiometric ratio of Cu in the CuZrO 3 catalyst (Cu:2Zr) induces structure defects and thus results in blue Raman shiing as well. In addition, the broadening of the peak illustrates structural distortion associated with the formation of the perovskite structure CuZrO 3 .…”

“…Emy et al reported addition of TFA in a TiO 2 lattice during calcination notably improved the concentration of surface oxygen vacancies by charge neutrality. 43 Ali Ehsan et al previously reported a CuZrO 3 -CuO composite phase on thin lms. 44 Moreover, catalytic activity of the CuZrO 3 catalysts was tested in liquid phase oxidation of vanillyl alcohol using an environmentally benign oxygen source.…”

Preparation, characterization and photocatalytic activity of BaTiF 6 and BaTiO 3 : A comparative study

“…In the present work incorporation of fluorine at oxygen lattice site is attempted and such an effort has led to the formation of a new compound of the type barium hexa-fluorotitanate (BaTiF 6 ). It is known that fluorine enhances the catalytic activity of a photocatalyst by modifying its structure, increasing the hydrophilicity, surface area, porosity and also its thermal stability [8,9]. The possible defects in BaTiO 3 and BaTiF 6 include ionized or neutral vacancies of the type V Ba , ' V Ba , V Ba…”