Influence of neodymium ions on photocatalytic activity of TiO2 synthesized by sol–gel and precipitation methods

Microwave-assisted hydrothermal synthesis of Nd, N, and P tri-doped TiO2 from TiCl4 hydrolysis and synergetic mechanism for enhanced photoactivity under simulated sunlight irradiation

“…Compared with TO, NdTO and NTO present decreased intensities of the rutile (110) peaks, whereas increased intensities of the anatase (101) peaks, implying that Nd or N doping can inhibit the phase transformation from anatase to rutile. Similar results were also reported in other works [11][12][13][14]. Ti-O-Nd, N-Ti-O, and Ti-O-N bonds at the interstices of TiO 2 lattices could occur during the microwave-assisted hydrothermal process, then inhibiting the phase transition.…”

“…Neodymium is one of the lanthanide ions that are effective in increasing the photoactivity of TiO 2 [10]. For example, Hewer et al [11] synthesized TiO 2 doped with only 0.5 wt% Nd by sol-gel and precipitation methods, which presented the enhanced photocatalytic activity towards Remazol Black degradation compared to undoped TiO 2 . Bokare et al [12] prepared Nd-doped TiO 2 by the sol-gel method exhibiting photocatalytic activity in solar light together with UV light irradiation, which was ascribed to the increase in the anatase phase stability, surface area and visible-light absorption capacity of the sample due to Nd-doping.…”

Photocatalytic Water Treatment by Titanium Dioxide: Recent Updates

“…Other factors that influence the activity of the doped NTO catalyst include dopant concentration [124,126], the crystal phase of the NTO [127], and the intensity of light irradiance [105]. Doped NTO photocatalysts have also been reported for their photocatalytic activity with UV light irradiation in pollutant degradation [131,132], nitrate reduction, and in bacterial disinfection [133,134]. Even though doped NTO catalysts can operate in the visible region, several issues must be considered before their wide use in photocatalytic water treatment.…”

Influence of Nd-Doping on Photocatalytic Properties of TiO2Nanoparticles and Thin Film Coatings

“…One of the ways to increase its photocatalytic activity is manufacturing TiO 2 in the nanocrystalline form because the crystallite size reduction has a positive effect on this property 2 International Journal of Photoenergy [24,25]. Numerous scientific works have studied the effect of titania structure modification on photocatalysis [26,27], for example, materials with the two-phase structure (anataserutile) [28,29]. Another way to improve the self-cleaning properties of TiO 2 is doping, for example, with lanthanide ions having 4f configuration, such as Nd, Eu, or Tb [29][30][31][32][33][34][35][36][37][38][39].…”