Multifunctional role of engineered tin oxide nanoparticles with the variation of calcination temperatures

• Published in: Materials today communications 2023-06, Vol.35, p.105546, Article 105546
• Main Authors: Basavanagoudra, Hanumantagouda, Jangannanavar, Vijayakumar D., Patil, Mallikarjun K., Shettar, Arun K., Hanamanta, Hegde, Balachandra G., Inamdar, Sanjeev R., Goudar, Kotresh M.
• Format: Article
• Language: English
• Subjects: Bioactivity; Calcination temperature; Gas sensing; TEM; Tin oxide NPs; XRD
• ISSN: 2352-4928; 2352-4928
• DOI: 10.1016/j.mtcomm.2023.105546

In the present work, we have investigated the effect of calcination temperature on the structural, morphological, optical, and electrical properties of synthesized tin oxide NPs using various spectroscopic techniques. The decrease in the crystallite size and the change in the phase transformation from SnO litharge to SnO2 rutile structure have been noticed as a function of calcination temperature. The synthesized NPs are optically active, exhibit broad absorption and narrow emission peaks and have shown the behavior of the quantum confinement effect. The synthesized NPs have flaunted the chemiresistive properties for sensing ammonia and ethanol gases. The SnO2 NPs has exhibited the highest sensing response for test gases at 120°C operating temperature compared to SnO NPs. In addition, the synthesized tin oxide NPs corroborated the substantial anticancer activity by MTT cell viability assay and shows significant in-vitro anticancer activity on lung cancer A549 cells. The evaluation of antimicrobial and antioxidant activities of the tin oxide NPs was also done and demonstrated excellent biocompatibility for the tested biological species. Hence, the synthesized tin oxides NPs become promising candidates to develop physical, chemical and biomedical applications due to their inherent multifunctional characteristics. [Display omitted] •The variation of calcination temperature transforms the crystalline phase of NPs.•Mesoporous voids of NPs surface elevate the chemiresistive gas sensing property.•The rutile structured NPs shows excellent conducting and gas sensing property.•The higher temperature calcinated NPs effectuate good in-vitro anticancer activity.