• SHYAM KUMAR VOOTLA

      Articles written in Bulletin of Materials Science

    • Synthesis of cerium-oxide NPs and their surface morphology effect on biological activities

      MALATESH S PUJAR SHIRAJAHAMMAD M HUNAGUND DELICIA A BARRETTO VANI R DESAI SHIVAPRASADAGOUDA PATIL SHYAM KUMAR VOOTLA ASHOK H SIDARAI

      More Details Abstract Fulltext PDF

      Herein, reliable work has been carried out on the synthesis of cerium-oxide (CeO$_2$) nanoparticles (NPs) viahydrothermal and co-precipitation methods. We emphasize the highly adequate hydrothermal method for synthesizingCeO$_2$ NPs for biomedical applications. Absorption spectra showed peaks at 283 and 274 nm, which confirm the formationof CeO$_2$ NPs for hydrothermal (HYNPs) and co-precipitation (CONPs) methods, respectively. Functional group analysisfirmly showed the presence of organic and inorganic species, which revealed similar characteristics of both HYNPs andCONPs. The cubic structure and the average crystallite size of the synthesized NPs are determined using Scherrer’s andWilliamson–Hall methods. The obtained average particle size is compared by using high-resolution transmission electronmicroscopy, which is around 10 and 5 nm for HYNPs and CONPs, respectively. Further, we studied their antimicrobial activities and consequently, the synthesized CeO$_2$ NPs showed excellent antimicrobial activities. Moreover, HYNPs yieldedpromising antioxidant activity with the lowest IC$_{50}$ as compared with CONPs. Owing to the biological activity of CeO$_2$ NPs, HYNPs act as best therapeutic agents in biomedical applications as well as its vital role in antibiotics.

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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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