In this paper, we report the synthesis and characterization of composites of polyaniline and aluminum doped tin oxide (AlSnO 2 /PANI) nanofibers for hydrogen gas sensing application. Al-SnO 2 /PANI composite nanofibers have been fabricated via electrospinning technique and subsequent calcination procedure. The as-prepared Al-SnO 2 /PANI composite nanofibers were investigated for structural characterizations by means of SEM, FTIR, UV-VIS and XRD. SEM revealed the nanofibers with the diameter around 200-300 nm formed a non-woven material with highly porous and agglomerated structure. FTIR and UV-VIS spectra revealed the possible incorporation of Al-SnO 2 in PANI and confirmed the uniform attachment of PANI on the surface of Al-SnO 2 nanostructures. XRD showed peak broadening and the peak positions shift from standard values, indicating presence of aluminum doped tin oxide in nanoparticles form in the polyaniline (PANI) matrix. On exposure to hydrogen gas (1000 ppm), it was found that the nanofibers of Al-SnO 2 /PANI composite showed high sensitivity at 48 o C with relatively faster response/recovery as compared to pure SnO 2 and Al doped SnO 2 nanofibers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.