Thick films of bulk tin oxide powder were observed to be less sensitive to polluting, hazardous and inflammable gases. So, nanostructured SnO2 powder was synthesized by disc type ultrasonicated microwave assisted centrifuge technique. Thick films of nanostructured pure SnO2 powder were fabricated by screen printing technique. These films were surface functionalized by SrCl26H2O for different intervals of time followed by firing at 450oC for 30 min. The surface morphology, chemical composition, crystal structure, electrical and gas sensing performance of the unmodified and surface functionalized nanostructured SnO2 powder by SrO2 have been investigated by FESEM, E-DAX, XRD, etc.
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