Abstract

The thermal evolution process of a SnO 2 thin film from SnCl 2·2H 2O precursor dissolved in ethanol was followed by thermogravimetry combined with mass spectrometry (TG-MS), diffuse reflectance Fourier transform infrared spectroscopy (DRIFT) and infrared emission spectrometry (IRES). The precursor salt solution was deposited on a titanium metal sheet. After evaporation of the solvent, the gel-like film was heated in a thermobalance in an oxidative environment to 600 °C. Mass spectrometric ion intensity curves showed the liberation of chlorinated species, alcoholic fragments and CO 2 as combustion product and from the decomposition of surface carbonyls, carboxylates and carbonates. The presence of O H, C H and C O bands in the infrared spectra was confirmed and their assignment was made by the deconvolution of the recorded curves as a function of the firing temperature.

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