Thermaland structural investigation of SnO2/Sb2O3obtained by the polymeric precursor method |
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| Authors: | Danniely S. de Melo M. R. C. Santos Iêda M. G. Santos L. E. B. Soledade M. I. B. Bernardi E. Longo A. G. Souza |
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| Affiliation: | 1.Departamento de Química,CCEN, Universidade Federal da Paraíba,CidadeUniversitária,Jo?o Pessoa,Brazil;2.CMDMC,Departamento de Física e de Ciências dos Materiais,Instituto de Física de S?o Carlos,S?o Carlos,Brazil;3.CMDMC, Instituto de Química,UNESP,Araraquara,Brazil |
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| Abstract: | SnO2-based materials are used as sensors, catalysts and in electro–optical devices. This work aims to synthesize and characterize the SnO2/Sb2O3-based inorganic pigments, obtained by the polymeric precursor method, also known as Pechini method (based on the metallic citrate polymerization by means of ethylene glycol). The precursors were characterized by thermogravimetry (TG) and differential thermal analysis (DTA). After characterization, the precursors were heat-treated at different temperatures and characterized by X-ray diffraction. According to the TG/DTA curves basically two-step mass loss process was observed: the first one is related to the dehydration of the system; and the second one is representative to the combustion of the organic matter. Increase of the heat treatment temperature from 500 to 600°C and 700°C resulted higher crystallinity of the formed product. |
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| Keywords: | cassiterite polymeric precursor method thermal analysis |
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