2020年7月15日 · The abundant OVs with weak acidity was introduced into modified CeO 2 and further characterized by XPS, EPR, Raman and NH 3-TPD. The results found that the catalytic activity of this newly prepared catalyst can effectively promote light harvesting, charge separation, reactive oxygen generation and reducibility, which then subsequently improved ...

2017年7月19日 · Combination of defects in CeO 2 NPs with optimal amount of two-dimensional graphene sheets had a significant effect on the properties of the resulting hybrid CeO 2 -Graphene nanostructures,...

2024年3月15日 · In this paper we report on a dry synthesis using ammonium bifluoride NH 4 HF 2 and characterization of composite CeO 2 /CeF 3 nanoparticles doped with Er 3+ probe ions. The formation of double-phase CeO 2 /CeF 3 NPs can provide the synergy of excellent properties of both CeO 2 and CeF 3.

2019年12月5日 · CeO 2 supported Ni is finely tuned by Pr doping using a simple sol-gel method. Oxygen vacancies and Ni dispersion on CeO 2 are effectively controlled. Metal-support interaction between Ni and Pr-doped CeO 2 is facilitated. Coking and Ni sintering are suppressed on 10Ni-CePr 0.20 in ethanol steam reforming.

2022年3月8日 · Wang等[18] 采用水热法合成了棒状的CeO2 催化剂（CeO 2 -R），研究发现CeO 2 -R表现出较高的邻二甲苯氧化活性，而高催化活性归因于CeO 2 -R具有最高浓度的氧空位团簇，从而促进了对分子氧的吸附与活化。

2016年11月10日 · This chapter intends to provide a review of EPR spectroscopic characterization of ceria nanoparticles. It covers recent EPR applications to investigate the synthesis, local structure, and distortion of ceria nanoparticles.

Download scientific diagram | EPR spectra of CeO 2 samples synthesized at different temperatures. from publication: CeO2 Nanoparticles Synthesized by a Microwave-Assisted Hydrothermal...

In this paper, we have studied the EPR spectra, X-ray diffraction and Raman Analysis, Microstructures-morphology of the Ceria NPs calcined at different temperatures of 700 °C, 850 °C ,these materials have been synthesized by Co precipitation (CPT) method by using Cerium tri-nitrate hexahydrate and potassium carbonate solutions.

2016年4月18日 · In situ electron paramagnetic resonance (EPR) spectroscopy is capable of monitoring the change of metal ion valences and formation of active sites during redox reactions, allowing for the identification of ongoing redox pathways.

1996年12月1日 · The EPR spectra of freshly prepared CeO 2 samples as well as of samples used as a catalyst in the oxidation of CO to CO 2 are reported. Attribution of these patterns to oxygen species O − 2, O 2, O −, or to Ce 3+ ions is discussed and dynamic phenomena involving these species are described.