Micro‐Raman investigation of tin dioxide nanostructured material based on annealing effect

Abstract

Rutile-structured nanocrystalline tin dioxide (SnO 2 ) powder was synthesized by the chemical precipitation method using the precursor SnCl 2 • 5H 2 O. The SnO 2 powder was annealed at different temperatures, namely, 600, 800 and 1000 • C. Micro-Raman spectra were recorded for both the as-grown and annealed SnO 2 nanocrystalline samples. Micro-Raman spectral measurements on the SnO 2 nanoparticle show the first-order Raman modes A 1g (633 cm −1 ), E 1g (475 cm −1 ) and B 2g (775 cm −1 ), indicating that the grown SnO 2 belongs to the rutile structure. The first-order A 1g mode is observed as an intense band, whereas the other two modes show low intensity. The full width at half-maximum and band area of the Raman lines of SnO 2 nanoparticle annealed at various temperatures were calculated. The effect of high-temperature annealing on the vibrational modes of SnO 2 was studied. The optical image of SnO 2 nanocrystalline material was used to understand the surface morphology effect.

Vibrational spectra of CaGa2O4, Ca2GeO4, CaIn2O4 and CaSnO3 prepared by electrospinning

“…According to some reports about CaSnO 3 and SrSnO 3 [36][37][38]48], the symmetric stretching vibrations of Sn-O and the symmetric vibrations of SnO 6 octahedra produce high intensity Raman peaks (Fig. 3(d)) and IR absorption bands (Fig.…”

“…CaSnO 3 exhibits a perovskite structure and isostructural with CaGeO 3 , SrSnO 3 and GdFeO 3 [33][34][35][36][37][38][39]. The structure itself is distorted through the tilting and distortion of SnO 6 octahedron.…”

Interaction of N-(2-Methyl Thio Phenyl)-2-Hydroxy-1-Naphthaldimine with Tin Dioxide Nanoparticles: A Spectroscopic Approach

“…It is observed that the value of K SV is large compared with V, which explains the lack of major absorption change on addition of the quencher [24]. The radii of the quencher as determined by the Micro-Raman spectroscopic technique [19] is equal to 80 nm which is greater than that of the kinetic distance. This verifies that the quenching is not due to the sphere of action.…”

“…Then for about 5 hours in air it was annealed in a muffle furnace at 600˚C to enhance the crystallinity of SnO 2 NPs and the product appeared as white in color after the heat treatment. The particle size of the resultant product was found as 160 nm using micro Raman spectroscopic technique [19].…”

Controlled SnO2 nanocrystal growth in SiO2–SnO2 glass‐ceramic monoliths

“…Supplementary bands appearing either in the regions of 350 cm -1 or 570 cm -1 have been cited. These bands have been linked to surface modes, [24,[28][29][30][31] oxygen vacancies [30,32] or crystalline interface disorder. [33,34] In our work, we cannot discuss any eventual bands related to SnO 2 in the 550-580 cm -1 region because the D 2 band of SiO 2 completely masks this part of the spectrum.…”