✦ LIBER ✦

Synthesis and characterization of microspheres composed of SnO2 nanoparticles processed via a chemical route

✍ Scribed by T. Sequinel; S. Cava; D. Berger; S.M. Tebcherani; S.A. Pianaro; S. Schmidt

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 314 KB
Volume: 196
Category: Article
ISSN: 0032-5910
DOI: 10.1016/j.powtec.2009.07.019

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✦ Synopsis

SnO 2 microspheres were synthesized by a chemical route, heating the mixed Sn 2+ and sulfuric acid solution in the presence of pressurized oxygen at 900 °C in a designed calorimetric pump. Phase analysis was carried out by X-ray diffraction (XRD) and the results confirmed the SnO 2 microspheres as a single-phase tetragonal structure. Scanning electron microscopy (SEM) images indicated that these microspheres with average diameters of 0.9 μm were composed of SnO 2 nanoparticles with a diameter of about 4.7 nm and a crystallite size of 3.7 nm, as observed by transmission electron microscope (TEM) and calculated by Scherrer's equation from diffractograms, respectively. The formation mechanism of microspheres composed of SnO 2 nanoparticles and the influence of changes in processing are proposed and explained.

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