Photocatalytic performance on degradation of Acid Orange 7 dye using biosynthesized un-doped and Co doped CeO2 nanoparticles

In Vitro Cytotoxic Performance of Pure and Co-Doped CeO2 Nanoparticles on Breast Cancer Cell, Colon Cancer Cell, and Mouse Embryo Fibroblast Cell Lines

“…In doped cerium oxide nanoparticles with 1, 4, and 8% cobalt, this band appeared in the region of 446, 446, and 440 cm −1 , respectively. It has been con rmed that this band can be transferred to lower regions using increasing the concentration of doped cobalt to cerium oxide, due to created oxygen de ciency with the entry of cobalt cation into the crystal structure of cerium oxide [23,26]. In addition, the particle size factor can also in uence the position of this band as it has been observed that the F2g mode has been shifted to lower regions due to the reduction in particle size [23].…”

“…The electron spectrum of CeO 2 NPs has a peak at 309 cm −1 , while peaks of doped CeO 2 NPs with 1, 4, and 8% cobalt were observed in the regions at 333, 329, and 253 cm −1 , respectively. Doping of cobalt in the crystal structure CeO 2 NPs has led to a change in its electron spectrum towards shorter wavelengths, which could be due to the electron transfer of doped cobalt in the cubic structure of these nanoparticles [23].…”

“…Adhering to the green chemistry principles [16] has provided safer routes for the production of CeO 2 NPs, which can be useful for drug applications; indeed, these methods offer cheaper and simpler options than the traditional chemical synthetic methods [17][18][19][20][21]. Another important factor for effective and important nanoparticles properties is the doping process as attested by several studies wherein the properties of doped nanoparticles with various metals have dramatic alterations compared to un-doped nanoparticles; synthetic methods for doped nanoparticles being similar [22][23][24].…”

Leishmanicidal activities of biosynthesized BaCO3 (witherite) nanoparticles and their biocompatibility with macrophages

“…Generally, various physicochemical approaches are deployed for the synthesis of barium carbonate nanoparticles; among the main disadvantages of these methods are the use of expensive equipment, toxic precursors, several reducing/stabilizing agents in a single synthesis with time-consuming and low-efficiency production [29]. On the other hand, plant extracts with low/nontoxicity can act as reducing and stabilizing agents [10,22,26,44]; nanomaterials can be fabricated via simple [3] and low-cost approaches [25,27] into various morphologies [4,31,33] using plant extracts [11,16,17,20,28].…”

Antioxidant Properties of Stabilized CeO2 Nanoparticles

“…Cerium dioxide is one of the most promising rare earth oxides, which, due to its unique physicochemical properties, [ 1,2 ] such as UV absorption, [ 3 ] high permeability and exchange capacity for oxygen ions, [ 4 ] high‐temperature stability, finds its application in many fields: biomedicine [ 5–7 ] , solid‐oxide fuel cells, [ 8 ] solar screens, [ 9 ] catalysis, [ 10 ] etc. The functioning of CeO 2 nanoparticles is due to the presence in their surface atomic layers of a large number of structural defects, in particular, oxygen vacancies.…”