Structural investigation of SnO₂ catalytic nanoparticles doped with F and Sb

Abstract

Structural and morphological properties of pure and F-doped or Sb-doped particles of tin oxide were studied by X-ray diffraction and transmission electron microscopy (TEM). A typical polycrystalline diffraction pattern corresponding to the tetrahedral phase was obtained for all the particles independently of the doping. No peaks matching any antimony oxide phase were observed; thus, it is probable that Sb replaces Sn in the tin oxide lattice. Doping with antimony results in a lattice parameter increase of the SnO 2 /Sb phase, which might be related to the geometrical distortion of the lattice due to the replacement of Sn by Sb. Moreover, the SnO 2 /Sb sample exhibited a preferential orientation in the (110) and (101) planes. The TEM analysis showed that all the tin oxide particles are agglomerated and form aggregates and networks leading to a mesoporous structure with different pore sizes. The particles have a spherical shape and sizes between 5 and 20 nm in average. All particles were well crystallized with nicely visible lattice fringes in the high-resolution HRTEM images.

Sequential activation of M1 and M2 phenotypes in macrophages by Mg degradation from Ti-Mg alloy for enhanced osteogenesis

“…According to the SEAD patterns, the lattice parameter of d{101} α-Ti or d{102}Mg from SEAD patterns was found to be 0.233 nm or 0.214 nm. Using SAED images and XRD techniques, Magdalena et al [39] demonstrated that the lattice parameter increase of the SnO2/Sb phase was related to the geometrical distortion of the lattice due to the replacement of Sn by Sb. These results indicated the mutual dissolution between Mg and Ti.…”

Development of hard and optically transparent Al-Si-N nanocomposite coatings

“…However, very few literature on such solution of Al-Si-N is available and is less understood. [3,[9][10][11][12] The present manuscript reports the formation of Al-Si-N hard coating by magnetron sputtering with a high optical transmittance.…”