Role of phosphate on stability and catalase mimetic activity of cerium oxide nanoparticles

Metallosurfactant Ionogels in Imidazolium and Protic Ionic Liquids as Precursors To Synthesize Nanoceria as Catalase Mimetics for the Catalytic Decomposition of H2O2

“…Similarly,1 0mm H 2 O 2 was employed to confirm the catalytic ability of CeO 2 NPs, and the concentration of CeO 2 NPs used in the literature was 100 mm. [49] Similarly,a sm easured by monitoring the absorbance decrease of H 2 O 2 at l = 240 nm by UV/Vis spectrophotometry, [50,58,59] the better catalytic activity of the as-prepared CeO 2 NPs reported herein is remarkable. [49] Similarly,a sm easured by monitoring the absorbance decrease of H 2 O 2 at l = 240 nm by UV/Vis spectrophotometry, [50,58,59] the better catalytic activity of the as-prepared CeO 2 NPs reported herein is remarkable.…”

“…[49] Similarly,a sm easured by monitoring the absorbance decrease of H 2 O 2 at l = 240 nm by UV/Vis spectrophotometry, [50,58,59] the better catalytic activity of the as-prepared CeO 2 NPs reported herein is remarkable. [47,49] Compared with other CeO 2 species with catalase mimetic activity prepared by the wet chemistry method, [49] the precipitation method, [50] and commercially availableC eO 2 , [59] the CeO 2 NPs prepared herein by calcining ionogels showa dvantages in the valence state. X-ray photoelectrons pectroscopy( XPS) results for CeO 2 NPs with sizes of 3a nd 7nma re shown in Figure S10 in the Supporting Information.…”

Cerium oxide nanoparticles: green synthesis and biological applications

“…[80][81][82] For example, Akhtar et al have demonstrated that the catalase activity of CeO 2 -NPs could increase the intracellular glutathione (GSH) in cells challenged with H 2 O 2 , protecting cells from oxidative damage. 80 Considering major roles of GSH in the regulation of cell growth and division, metabolism of carcinogens and protecting DNA from oxidative damage, the effect of CeO 2 -NPs on increasing the amount of intracellular GSH marks a revolution in medical biology.…”

“…Singh et al investigated the role of phosphate on stability and catalase mimetic activity of cerium oxide NPs. 81,83 Given the abundance of inorganic phosphate in biological systems, they demonstrated that catalase mimetic activity of CeO 2 -NPs (Ce 4+ ) is resistant to the phosphate anions, pH changes and composition of cell culture media. Thus, Singh et al provided a promising approach to more practical and attractive biomedical applications for cerium oxide NPs.…”

Catalytically Active Nanomaterials: Artificial Enzymes of Next Generation

“…Different NTPs reflected different dephosphorylation activity by CeO 2 NPs, which was further developed as an effective and high-throughput colorimetric assay for testing single-nucleotide polymorphism. Additionally, Singh et al have studied the alteration in catalytic properties of CeO 2 NPs when exposed to biologically relevant buffers [40,41]. It was reported that phosphate anions significantly diminished the SOD activity of CeO 2 NPs.…”