Study of Fe-doped and glucose-capped CeO2 nanoparticles synthesized by co-precipitation method

• CeO 2 , Fe-doped CeO 2 , and glucose-capped CeO 2 nanoparticles were prepared by co-precipitation method. • XRD, SEM, EDS, FTIR, PL and antibacterial studies were conducted. • Improvement of the antibacterial activity was observed due to Fe-doping and glucose-capping into CeO 2 NPs. • G-CeO 2 NPs are the good candidate for antibacterial activity against E. coli bacteria. CeO 2 , Fe-doped CeO 2 (Fe-CeO 2 ), and glucose-capped CeO 2 (G-CeO 2 ) nanoparticles (NPs) with crystallite sizes between 31.1 and 45.03 nm were prepared by co-precipitation method. XRD, FT-IR spectroscopy, UV–Vis spectroscopy, Photoluminescence, and bacterial analysis studies were conducted. The XRD patterns revealed a single-phase cubic structure formation of all samples. The formation of absorption bands in all samples was identified by FT-IR analysis between 400 and 4000 cm −1 . All samples were optically activated in the ultraviolet light region. The band gap values were found as 3.21, 3.33, and 3.39 eV for CeO 2 , Fe-CeO 2 , and G-CeO 2 NPs, respectively. Fe-CeO 2 , and G-CeO 2 NPs delivered lower photoluminescence emission intensity. Enhancement of antibacterial activity was observed because of Fe-doping and glucose-capping in CeO 2 NPs. Among all samples, G-CeO 2 NPs exhibited excellent antibacterial activity against E. coli bacteria.