119Sn Mössbauer spectroscopic study of nanometric tin dioxide powders prepared by pyrolysis of organotin oxides

Organotin sulfides as precursors for nanometric γ‐Sn2S3 powders: a study by 119Sn Mössbauer spectroscopy and X‐ray powder diffraction

“…On the contrary tin and sulfur were detected in the other materials obtained in inert or reducing atmospheres; this was important evidence that the sites detected by 119 Sn Mössbauer spectroscopy corresponded to tin sulfides, since from the parameters it is not possible to distinguish tin(II) or tin(IV) oxides from the respective sulfides. 15 The spectra of the other residues obtained in N 2 which resembles perfectly the corresponding spectrum of the standard. The SEM images for the residues of 2 ( Fig.…”

“…The SnO 2 obtained in oxygen presents the same morphology as for the material obtained previously. 15 Well-formed crystals of Sn 2 S 3 were prepared in N 2 , whereas in H 2 it crystallizes in the form of plates and seems less crystalline than the other material.…”

“…15 The latter technique is an efficient tool for identifying mixtures of tin with different oxidation states (even in small amounts) not detectable by powder XRD.…”

Phase and morphology dependence on the annealing temperature of tin sulfides and oxides prepared by thermal decomposition of organotin precursors

“…Organotin compounds were prepared according to the following simple reactions (Reactions (1) and (2)) between butyl tin trichloride and ammonium hydroxide or sodium sulfide [11]:…”

Controlled Synthesis of Nanomaterials using Reverse Micelles

“…This indicates an enhancement of s-electron density in comparison with the same in the bulk which indicates a small variation in the Sn-O bonding scheme in nanometric SnO 2 . Lowering of the symmetry around the tin atoms is indicated by moderate QS (0.49 mm/s) in the nanometric SnO 2 which may be attributed to the oxygen vacancies 56 . Because of the characteristic broad line width of SnO 2 , the changes in the isomer shift observed in the nano form are not clearly visible but the fitting gave the difference.…”