2023年5月1日 · Ultraviolet (UV) absorption band of CeO2 nanoparticle is adjusted from 380 to 345 nm by F− doping. Blue shift of optical absorption band is the result of CeO2 energy band gap enlarging. Coated glasses with tunable UV shielding is …

2019年5月29日 · In the present work, we demonstrate an annealing-free method for creating oxygen vacancy defects in CeO 2 nanocrystals by using UV-light irradiation. Nanocrystal samples of CeO 2 were...

2020年10月30日 · In the present work, we developed high surface area (high-S) CeO2-x nanoparticles with (i) photon absorption shifted from UV to visible region of the electromagnetic spectrum and (ii) high surface O vacancy population. The narrowing of the band gap is achieved thanks to the high structural disorder of the nanoparticles synthesized.

Simple and sensitive electrochemical sensors were fabricated from cerium oxide (CeO2) and copper-benzene tricarboxylic acid–modified cerium oxide (CeO2-Cu-BTC) materials for differential pulse...

2018年6月1日 · UV–vis DRS measurements show that the presence of oxygen vacancy defects in CeO 2-500 NPs can efficiently suppress the recombination rate of photogenerated electron-hole pairs and subsequently improve the quantum efficiency.

2015年1月3日 · CeO 2 nanoparticles exhibit photocatalytic activity against trypan blue at pH 10 in UV light, and the reaction follows pseudo first-order kinetics. Finally, CeO 2 nanoparticles also reduce Cr VI to Cr III and show antibacterial activity against Pseudomonas aeruginosa.

2020年1月28日 · CeO 2 /polymer nanoparticles have drawn considerable attention for their excellent UV absorption properties. However, many challenges still exist in the successful incorporation of ceria into the polymer matrix for the easy agglomeration and photocatalytic activity of CeO 2 nanoparticles.

2019年1月2日 · From the UV–Vis and diffuse reflectance spectra, energy values of 3.8 eV and 3.4 eV were obtained, values that can be associated with band—band electronic transitions and/or with those that involve ionized states located within …

UV-Vis diffuse reflectance spectra of CeO2 nanoparticles. [...] Cerium oxide nanoparticles were prepared by a precipitation method using Ce (IV) sulphate as precursor dispersed in glycerol with...

2019年5月29日 · Ultraviolet (UV) light irradiation on CeO 2 nanocrystals catalysts has been observed to largely increase the material's catalytic activity and reactive surface area. As revealed by x-ray absorption near edge structure (XANES) analysis, the concentration of …