Microwave synthesis of In-doped TiO2 nanoparticles for photocatalytic application

Structural and electronic insight into the effect of indium doping on the photocatalytic performance of TiO2 for CO2 conversion

“…Given that In 3+ has a larger ionic radius (0.80 Å) than Ti 4+ (0.61 Å), 64 this structural expansion would agree with a substitutional doping of In 3+ for Ti 4+ in the anatase lattice, suggesting that In 3+ cations are able to diffuse from the surface into the anatase crystalline lattice. In addition, values calculated from the Scherrer formula (Table 1) reveal that crystal size decreases with indium content, revealing an effect of indium on TiO 2 that has been previously related to In-doping, 30,32,33,36 even in precrystallized commercial TiO 2 samples 31 as is the case of the present study. In the case of the silver-decorated catalyst, no additional reections corresponding to metallic silver or any silver oxide are present either, and the diffractogram (Fig.…”

“…In addition, it can form solid solutions with TiO 2 in a wide compositional range. 28,29 Thus, Indoped TiO 2 photocatalysts have been explored for different photocatalytic reactions, where the electronic and surface modications induced by In 3+ have led to improved activities for the degradation of pollutants in water [30][31][32] or air 33 and for hydrogen production by photoreforming of alcohols. 26,34 Regarding CO 2 reduction, few works have explored the potential of indium doped titania for obtaining solar fuels or chemicals in this way.…”

Structural and optical characterization of crystals obtained via solid state reactions in the In2O3–TiO2–Al2O3 pseudoternary system

“…Three types of crystalline polymorph phases are possible to obtain for TiO 2 : anatase, rutile, and brookite [5]. Properties and characteristics can be varied between these phases such as photoactivity [5,6], phase stability [6], strong oxidizing power of the photogenerated holes, chemical inertness, non-toxicity [2], low cost, band gap of 3.2 eV [7], which in turn make it a very interesting material.…”

“…A wide variety of applications for these metal oxides such as solar cells, optoelectronic devices of solid state, UV-vis lasers, detectors and gas sensors [9], hydrogen generation, dye-sensitized solar cells, semiconductors, photocatalysis, self-cleaning and antimicrobial and antifungal activity is now open to these new materials [7].…”

Microstructural and optical properties of rare earth ions doped TiO2 for potential white LED applications

“…This indicates that the incorporation of the RE dopants is responsible for shifting in peak positions[29]. The amalgamation of RE in TiO 2 lattice results in deformation of the lattice arrangement by dislocating Ti 4+ ion due to mismatch in the ionic radii between RE and Ti 4+[30]. The powders formed showed tensile strain that may be due to the grain growth and densification.…”