Synthesis, structural characterisation, optical studies of CeO₂ nanoparticles and its cytotoxic activity

Multifunctional CeO2 Nanomaterials: Wet Chemical Synthesis, Characterization, and NIR Pigmentation Applications

“…12 reveal intense broad absorbance between 250 and 350 nm in the UV region that corroborate with the existing reports. 24,29,41,46,48,53,59 The band gap (E g ) of these CeO 2 nanomaterials calculated from the Tauc plots is found in the range of 2.67-3.06 eV which is comparable to the different types of CeO 2 nanomaterials explored by the different research groups (Table SIII).…”

“…25 FT-IR spectra of different CeO 2 nanomaterials.-Table SII summarizes the comparison of reported FT-IR band assignments for the wet chemical synthesized nanocrystalline CeO 2 materials and its derivatives. 24,26,27,33,42,47,48,[53][54][55][56][57] From these reports, we note that the Ce-O stretching FT-IR bands are observed at wavenumber, < 700 cm −1 , 24 480 cm −1 , 26 450 cm −1 , 27 480 cm −1 , 33 500-400 cm −1 , 47 560 cm −1 , 54 479 cm −1 , 55 and 450 cm −156 for the different nanocrystalline CeO 2 materials. Figures 8a-8g) shows the FT-IR spectra of different CeO 2 nanomaterials studied in the present work by the KBr pellet method.…”

“…It is The present XRD results are compared with the reported values that exist in the literature. 19,21,24,27,29,[31][32][33]37,38,42,48,51,53,60 From Table IV, we could understand that the chemical precipitation by NH 3 solution using Ce(NO 3 ) 3 .6H 2 O as cerium source showed a = 0.55031 nm with D = 13.5 nm for the as-obtained CeO 2 materials, 42 whereas our present as-precipitated materials by NH 4 OH solution showed a = 0.543 (7) nm with D = ∼3 nm which is quite interesting and rather different from the reported one. 42 Like these, significant differences in "a" and "D" values are noted for the different asobtained CeO 2 materials by researchers (Table IV).…”

“…These are caused by physically adsorbed OH − /H 2 O and/or CO 2 /CO 3 2− (ν C−O and/or ν C = O ) species on the surface of the CeO 2 nanomaterials. 24,26,27,33,42,48,53,[55][56][57] NIR spectra CeO 2 nanomaterials.-Generally, the NIR reflectance of nano-crystalline binary oxides has been found higher (∼15%) than its counterpart (macro-crystalline). 68,69 A brief collection on the NIR reflectance of different types of oxides has been reported by Balamurugan et al 70 V).…”

Investigating the Effectiveness of Plant-Mediated Cerium Oxide Nanoparticles as Larvicidal Agents against the Dengue Vector Aedes aegypti

“…The broad peaks at 3371 cm −1 indicate the presence of O-H vibration of hydroxyl group which is slightly shifted. The band at 2922 cm −1 completely disappeared in the annealed sample most likely because of the higher temperature [59]. Similarly, the peaks in CeO2 NPs present at 1613 cm −1 , 1500 cm −1 , 1334 cm −1 , and 1153 cm −1 , which were assigned to C=O, C-H, and C-N groups of phytochemicals present in the BL leaf extract were also shifted.…”