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Artículos de revistas sobre el tema "Cerium dioxide (CeO2)"

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Publicado: 16 de noviembre de 2024
Última modificación: 31 de julio de 2025

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1

Boyko, Yu I. "Structural rearrangement and change of cerium valence in cerium dioxide (CeO2) nanocrystals." Functional materials 23, no. 2 (2016): 202–5. http://dx.doi.org/10.15407/fm23.02.202.

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2

Channei, Duangdao, Panatda Jannoey, Auppatham Nakaruk, and Sukon Phanichphant. "Photocatalytic Activity of Cu-Doped Cerium Dioxide Nanoparticles." Key Engineering Materials 751 (August 2017): 801–6. http://dx.doi.org/10.4028/www.scientific.net/kem.751.801.

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Pure CeO2 and Cu-doped CeO2 nanoparticles with different doping amounts of Cu in the range of 0.5-2.0 wt.% were synthesized by the combination of homogeneous precipitation and impregnation methods. The effect of Cu on the correlation of structural, optical and photocatalytic properties of CeO2 were studied. The XRD results indicated that phase structures of pure CeO2 and Cu-doped CeO2 nanoparticles were cubic fluorite phase and no other characteristic peaks related to Cu were detected. TEM images revealed that all samples were spherical in shape with the size less than 10 nm. The shift of abso
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3

Filippova, A. D., A. E. Baranchikov, and V. K. Ivanov. "Enzyme-Like Activity of Cerium Dioxide Colloidal Solutions Stabilized with L-Malic Acid." Коллоидный журнал 85, no. 5 (2023): 668–81. http://dx.doi.org/10.31857/s0023291223600529.

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For the first time, stable aqueous colloidal solutions of cerium dioxide stabilized with L-malic acid have been obtained at ligand : CeO2 molar ratios of 0.2, 0.5, 1.0, and 2.0. Using dynamic light scattering, it has been shown that CeO2 sols are characterized by a narrow monomodal size distribution of aggregates, and the sols remain to be aggregatively stable in a Tris-HCl buffer solution. According to the chemiluminescence analysis of the enzyme-like activity of cerium dioxide sols with respect to hydrogen peroxide, the surface modification of the cerium dioxide particles with malic acid inc
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4

Strobel, Claudia, Martin Förster, and Ingrid Hilger. "Biocompatibility of cerium dioxide and silicon dioxide nanoparticles with endothelial cells." Beilstein Journal of Nanotechnology 5 (October 17, 2014): 1795–807. http://dx.doi.org/10.3762/bjnano.5.190.

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Cerium dioxide (CeO2) and silicon dioxide (SiO2) nanoparticles are of widespread use in modern life. This means that human beings are markedly exposed to them in their everyday life. Once passing biological barriers, these nanoparticles are expected to interact with endothelial cells, leading to systemic alterations with distinct influences on human health. In the present study we observed the metabolic impact of differently sized CeO2 (8 nm; 35 nm) and SiO2 nanoparticles (117 nm; 315 nm) on immortalized human microvascular (HMEC-1) and primary macrovascular endothelial cells (HUVEC), with par
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5

Ahire, Satish Arvind, Ashwini Ashok Bachhav, Thansingh Bhavsing Pawar, Arun Vitthal Patil, Swapnil Sampatrao Shendge, and Prashant Bhimrao Koli. "Green Synthesis of Ceria Nanoparticles Using Azadirachta Indica Plant Extract: Characterization, Gas Sensing and Antibacterial Studies." Material Science Research India 18, no. 3 (2021): 285–97. http://dx.doi.org/10.13005/msri/180304.

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In the present investigation we have fabricated the cerium dioxide (CeO2) nanoparticles by green route. While preparing the cerium dioxide nanoparticles by co-precipitation method, Neem leaf extract mixed into the precursor of cerium. The synthesized nanoparticles of CeO2 were used for the preparation of thick film sensor by using screen printing strategy. The fabricated CeO2 sensor was characterized by XRD, SEM, EDS and TEM techniques. The structural characteristics investigated by x-ray diffraction technique (XRD). XRD confirms the formation of cubic lattice of CeO2 material. The surface, te
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6

Stegniy, B. T., O. A. Demchenko, O. M. Korneykov, et al. "Antiviral Effect of Cerium Dioxide Nanoparticles on the Model of the Causative Agent of Bovine Viral Diarrhea." Mikrobiolohichnyi Zhurnal 83, no. 6 (2021): 65–74. http://dx.doi.org/10.15407/microbiolj83.06.065.

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Cerium dioxide nanoparticles (CeO2) have a wide range of biological properties, including antiviral activity. Preparations based on cerium oxide nanoparticles can be effective against animal RNA viruses, which have the greatest epizootic significance for Ukraine and potentially against human viruses, including SARS-CoV-2. In our studies, we determined the effect of cerium dioxide nanoparticles on bovine viral diarrhea virus (BVDV), a pestivirus that is the etiological agent of bovine viral diarrhea. To determine the antiviral efficacy of CeO2, a cytopathogenic strain of BVDV “BK-1” was used as
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7

Huang, Hui, and Zhong Cheng Guo. "Preparation and Characterization of Conductive Polyaniline/Cerium Dioxide Composites." Materials Science Forum 663-665 (November 2010): 686–89. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.686.

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Conductive polyaniline/cerium dioxide (PANI/CeO2) composites have been synthesized by in-situ polymerization of aniline in the presence of CeO2 nanoparticles. The structure and thermal stability of obtained composites were characterized by Fourier-transform infrared spectra (FTIR), Fourier-transform Raman spectra (FT-Raman), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The results showed that PANI and CeO2 nanoparticles were not simply blended, and a strong interaction existed at the interface of CeO2 and PANI. In the PANI/CeO2 composite, the degree crystallinity of PANI incre
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8

Kim, Young-Soo, Jin-Kyu Lee, Jae-Hoon Ahn, Eun-Kyung Park, Gil-Pyo Kim, and Sung-Hyeon Baeck. "Fabrication of Mesoporous Cerium Dioxide Films by Cathodic Electrodeposition." Journal of Nanoscience and Nanotechnology 7, no. 11 (2007): 4198–201. http://dx.doi.org/10.1166/jnn.2007.109.

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Mesoporous cerium dioxide (Ceria, CeO2) thin films have been successfully electrodeposited onto ITO-coated glass substrates from an aqueous solution of cerium nitrate using CTAB (Cetyltrimethylammonium Bromide) as a templatingagent. The synthesized films underwent detailed characterizations. The crystallinity of synthesized CeO2 film was confirmed by XRD analysis and HR-TEM analysis, and surface morphology was investigated by SEM analysis. The presence of mesoporosity in fabricated films was confirmed by TEM and small angle X-ray analysis. As-synthesized film was observed from XRD analysis and
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9

Lukin, Anton V., Galina I. Lukina, Alexey V. Volkov, Alexander E. Baranchikov, Vladimir K. Ivanov, and Alexey A. Prokopov. "Morphometry Results of Formed Osteodefects When Using Nanocrystalline CeO2 in the Early Stages of Regeneration." International Journal of Dentistry 2019 (December 26, 2019): 1–9. http://dx.doi.org/10.1155/2019/9416381.

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This paper studies of the use of nanocrystalline cerium dioxide with artificially formed bone tissue defects. The results of morphometry confirmed the antialterative effect in the early stages of the reparative process of damaged bone tissue. When using calcium hydroxide with nanodispersed cerium dioxide, the nature of osteogenesis should be characterized as activated. In case of damage to the dentin of the roots of the teeth, dentinogenesis in presence of CeO2 occurs with the formation of a combined dentin and bone regenerates. Little or no studies of dentinogenesis in presence of CeO2 were p
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10

Deval, Gaëlle, Sonja Boland, Thierry Fournier, and Ioana Ferecatu. "On Placental Toxicology Studies and Cerium Dioxide Nanoparticles." International Journal of Molecular Sciences 22, no. 22 (2021): 12266. http://dx.doi.org/10.3390/ijms222212266.

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The human placenta is a transient organ essential for pregnancy maintenance, fetal development and growth. It has several functions, including that of a selective barrier against pathogens and xenobiotics from maternal blood. However, some pollutants can accumulate in the placenta or pass through with possible repercussions on pregnancy outcomes. Cerium dioxide nanoparticles (CeO2 NPs), also termed nanoceria, are an emerging pollutant whose impact on pregnancy is starting to be defined. CeO2 NPs are already used in different fields for industrial and commercial applications and have even been
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11

Hadi, Abdul, Iskandar Idris Yaacob, and Cheah Seok Gaik. "Synthesis of Nanocrystalline CeO2 Using Mechanochemical Method: The Effect of Milling Time on the Particle Size." Materials Science Forum 517 (June 2006): 105–10. http://dx.doi.org/10.4028/www.scientific.net/msf.517.105.

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Nanocrystalline cerium dioxide (CeO2) has been successfully synthesized by mechanochemical technique at 12, 24, 36, 48 and 60 hours milling times. The starting materials, hydrated cerium carbonate and sodium hydroxide, were mixed in a weight ratio of 4:1 and were milled in a planetary ball mill with ball to powder ratio of 10:1. The high energy impact forces provided by the milling media caused collision of starting materials and allowed the chemical reaction to occur thus produced nanocrystalline cerium dioxide. The products were characterized using a battery of characterization methods, incl
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12

Chernov, A. M., L. S. Ageeva, D. S. Rasseko, et al. "Size composition, structure and antioxidant properties of Cerium dioxide nanoparticles obtained by autoclave synthesis." Proceedings of the Southwest State University. Series: Engineering and Technology 14, no. 4 (2024): 143–52. https://doi.org/10.21869/2223-1528-2024-14-4-143-152.

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Purpose of the study. To characterize the size composition, atomic and electronic structure, and antioxidant activity of Cerium dioxide nanoparticles synthesized by the hydrothermal method in an autoclave.Methods. Cerium dioxide nanoparticles were synthesized in an autoclave at 150°C. The size composition of the nanoparticles was characterized by small-angle X-ray scattering diffractometry. The structural and phase composition was studied using X-ray diffractometry. Scanning electron microscopy with an energy-dispersive X-ray analysis attachment was used to analyze the elemental composition of
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13

Liu, Xichen, Jianhua Zhang, Hao Zhang, Can Chen, and Dongzhi Zhang. "Enhanced Sensing Performance of Electrospun Tin Dioxide Nanofibers Decorated with Cerium Dioxide Nanoparticles for the Detection of Liquefied Petroleum Gas." Chemosensors 10, no. 12 (2022): 497. http://dx.doi.org/10.3390/chemosensors10120497.

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Tin dioxide (SnO2) nanofibers and cerium dioxide (CeO2) nanoparticles were prepared by electrospinning and hydrothermal methods, respectively. The morphology and structure of the synthesized SnO2/CeO2 samples were characterized by a variety of methods. The gas-sensing properties of the SnO2/CeO2 sensor were investigated for liquefied petroleum gas (LPG) detection at room temperature. Compared with pure SnO2 nanofibers, the SnO2/CeO2 composite sensor showed a much higher response and shorter response time for LPG sensing after doping with CeO2 nanoparticles. Furthermore, the SnO2/CeO2 composite
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14

Jiang, Keyu, Leyuan Dong, Qi Shen, et al. "Chlorobenzene Oxidation over Phosphotungstic-Acid-Coated Cerium Oxide: Synergistic Effect of Phosphotungstic and Cerium Oxide and Inhibition Mechanism of Sulfur Dioxide." Sustainability 16, no. 6 (2024): 2245. http://dx.doi.org/10.3390/su16062245.

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Ce–based catalysts exhibit a poor stability and activity in chlorinated volatile organic compound (Cl–VOC) oxidation due to their rapid Cl poisoning. Herein, phosphotungstic acid (HPW) was coated on CeO2 to improve its activity and stability for chlorobenzene (CB) oxidation. The HPW coating not only promoted CB adsorption onto CeO2, but also provided Brønsted acid sites to CeO2 for Cl species removal as HCl, thus avoiding Cl poisoning. Hence, a synergistic effect of CeO2 and HPW on HPW/CeO2 was observed, resulting in superior CB oxidation activity and stability. Additionally, to improve the su
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15

Ishraq Ahmed Shakir, Zainab Hamzah Baqi, and ) Zainab Shakir Naser. "Preparation Of Cerium Dioxide Nps And Its Adoption In Biomedical Applications." Journal of the College of Basic Education 30, no. 125 (2024): 41–52. http://dx.doi.org/10.35950/cbej.v30i125.12186.

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A simple chemical approach was used to synthesize cerium dioxide (CeO2) NPss (NPs). UV-Visible , (FTIR), (XRD) and (SEM) were used to characterize the CeO2 NPs. It was found that band gap of the CeO2 NPs (Eg = 4.1 electron volt) was enlarged as compared to bulk ceria (Eg = 3.19 electron volt) based on UV-Vis analysis. SEM scans indicated spherical-shaped particles with a diameter of 47.68 nm, which were verified by FTIR data at 594 cm-1. Additionally, the generated CeO2NPs' antibacterial and antifungal efficacies were assessed, and the results showed that CeO2 NPs had both antibacterial and an
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16

Sun, Yihua, Guoyao Li, and Rong Zhong. "Preparation and properties of a UV-curable coating containing rare earth CeO2." RSC Advances 15, no. 32 (2025): 26266–75. https://doi.org/10.1039/d5ra02778k.

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17

Filippova, Arina D., Alexander E. Baranchikov, Maria A. Teplonogova, Irina V. Savintseva, Anton L. Popov, and Vladimir K. Ivanov. "Ligand-to-Metal Ratio Governs Radical-Scavenging Ability of Malate-Stabilised Ceria Nanoparticles." Nanomaterials 14, no. 23 (2024): 1908. http://dx.doi.org/10.3390/nano14231908.

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Cerium dioxide sols stabilised with L-malic acid were shown to exhibit significant antioxidant activity towards alkyl peroxyl radicals in the range of ligand:CeO2 molar ratios of 0.2–1 (0.2:1, 0.4:1, 0.5:1, 0.6:1, 0.8:1 and 1:1). The antioxidant activity of cerium dioxide nanoparticles greatly depended on L-malic acid content and increased by 8 times when the ligand:CeO2 molar ratio increased from 0.2:1 to 0.4:1. An estimate of the ligand:CeO2 molar ratio required to ensure complete surface coverage of CeO2 nanoparticles with malate anions resulted in a value of 0.2. Aggregation degree of CeO2
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18

Akopov, F. A. "Cerium dioxide-based high temperature air heaters." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 3 (April 30, 2019): 40–43. http://dx.doi.org/10.17073/1683-4518-2019-3-40-43.

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The possibility of developing electric heaters based on cerium dioxide for air with an operating range of 300‒2500 K is discussed. The influence of various factors on the electrical conductivity of CeO2 ceramics has been investigated. The main physicochemical and ceramic properties of ceramics are characterized. Ill. 2. Ref. 8.
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19

Chaudhary, Archana, Mohd Quasim Khan, Rais Ahmad Khan, Ali Alsalme, Khursheed Ahmad, and Haekyoung Kim. "Fabrication of CeO2/GCE for Electrochemical Sensing of Hydroquinone." Biosensors 12, no. 10 (2022): 846. http://dx.doi.org/10.3390/bios12100846.

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Hydroquinone is a widely used derivative of phenol which has a negative influence on human beings and the environment. The determination of the accurate amount of hydroquinone is of great importance. Recently, the fabrication of an electrochemical sensing device has received enormous attention. In this study, we reported on the facile synthesis of cerium dioxide (CeO2) nanoparticles (NPs). The CeO2 NPs were synthesized using cerium nitrate hexahydrate as a precursor. For determining the physicochemical properties of synthesized CeO2 NPs, various advanced techniques, viz., powder X-ray diffract
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20

Mamontov, V. А., M. A. Pugachevskii, A. S. Sizov, and Yu A. Neruchev. "Effect of high temperature annealing on the electronic structure and antioxidant properties of ablated Cerium dioxide nanoparticles." Proceedings of the Southwest State University. Series: Engineering and Technology 15, no. 1 (2025): 123–34. https://doi.org/10.21869/2223-1528-2025-15-1-123-134.

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Purpose. Study of the dependence of the electronic structure and antioxidant properties of ablated cerium dioxide nanoparticles on the annealing temperature under photocatalytic reaction conditions in the presence of titanium dioxide nanoparticles.Methods. Nanoparticles of cerium dioxide were obtained by laser ablation. The average sizes of ablated nanoparticles of cerium dioxide subjected to centrifugation and high-temperature annealing were calculated from AFM images. A change in the electronic structure of annealing was detected by spectrophotometry, and sedimentation of annealed nanopartic
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21

Baqer, Anwar Ali, Khamirul Amin Matori, Naif Mohammed Al-Hada, Abdul Halim Shaari, Elias Saion, and Josephine Liew Ying Chyi. "Synthesis, Structural and Optical Properties of Cerium Oxide Nanoparticles Prepared by Thermal Treatment Method." Solid State Phenomena 268 (October 2017): 132–37. http://dx.doi.org/10.4028/www.scientific.net/ssp.268.132.

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A sample thermal treatment technique was utilised to synthesis cerium dioxide (CeO2) nanoparticles, using cerium (111) nitrate as a precursor, Polyvinylpyrrolidone as a capping agent, and deionized water as a solvent. The product underwent calcination treatment of 500, 550, 600, and 650 1C to crystallize the nanoparticles and to remove organic compounds. It was verified by XRD that by varying the calcination temperature, the cubic fluorite structure of CeO2 nanoparticles with pure products was achieved. Furthermore, the crystal sizes of the CeO2 nanoparticles were assessed to be 4 nm for the l
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22

Pugachevskii, M. A., V. A. Mamontov, A. A. Kryukov, S. A. Dodonova, E. B. Artyushkova, and V. A. Pikkiev. "Protective Properties of Ablated Cerium Oxide Nanoparticles for Cell Cultures under Conditions of Oxidative Stress under Ultraviolet and Ionizing Irradiation." Proceedings of the Southwest State University. Series: Engineering and Technology 13, no. 4 (2024): 139–51. http://dx.doi.org/10.21869/2223-1528-2023-13-4-139-151.

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Purpose. Study of the protective properties of ablated cerium oxide nanoparticles for cell cultures in an oxidative reaction under ultraviolet and ionizing irradiation.Methods. Cerium dioxide nanoparticles with high antioxidant activity were obtained using laser ablation. Atomic force microscopy was used to characterize ablated cerium dioxide nanoparticles and cells incubated with cerium dioxide nanoparticles. The protective properties of cerium dioxide nanoparticles were studied after 0 (without incubation), 6and 24-hour incubation using the colorimetric MTT test method.Results. Using laser a
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23

Andrievskaya, Olena, Oksana Kornienko, Oleksandr Bykov, Olga Chudinovich, and Larysa Spasonova. "The interaction between cerium dioxide, lanthanum and europium oxides at 1500°C." Processing and Application of Ceramics 15, no. 1 (2021): 32–39. http://dx.doi.org/10.2298/pac2101032a.

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Materials based on CeO2-La2O3-Eu2O3 and La2O3-Eu2O3 systems are promising candidates for a wide range of applications, but the phase relationship has not been studied systematically previously. The phase relations in the CeO2-La2O3-Eu2O3 ternary system at 1500?C and binary La2O3-Eu2O3 system at 1600-1500?C were studied in air by X-ray diffraction (XRD) investigation in the overall concentration range. The isothermal section of the phase diagram for the CeO2-La2O3-Eu2O3 system has been constructed. It was established that in the ternary CeO2-La2O3-Eu2O3 system there exist fields of solid soluti
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24

Frost, Mungo, John D. Lazarz, Abraham L. Levitan, et al. "High Pressure Brillouin Spectroscopy and X-ray Diffraction of Cerium Dioxide." Materials 14, no. 13 (2021): 3683. http://dx.doi.org/10.3390/ma14133683.

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Simultaneous high-pressure Brillouin spectroscopy and powder X-ray diffraction of cerium dioxide powders are presented at room temperature to a pressure of 45 GPa. Micro- and nanocrystalline powders are studied and the density, acoustic velocities and elastic moduli determined. In contrast to recent reports of anomalous compressibility and strength in nanocrystalline cerium dioxide, the acoustic velocities are found to be insensitive to grain size and enhanced strength is not observed in nanocrystalline CeO2. Discrepancies in the bulk moduli derived from Brillouin and powder X-ray diffraction
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25

Garcia, Isadora Martini, Vicente Castelo Branco Leitune, Antonio Shigueaki Takimi, et al. "Cerium Dioxide Particles to Tune Radiopacity of Dental Adhesives: Microstructural and Physico-Chemical Evaluation." Journal of Functional Biomaterials 11, no. 1 (2020): 7. http://dx.doi.org/10.3390/jfb11010007.

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The insufficient radiopacity of dental adhesives applied under composite restorations makes the radiographic diagnosis of recurrent caries challenging. Consequently, the misdiagnosis may lead to unnecessary replacement of restorations. The aims of this study were to formulate experimental dental adhesives containing cerium dioxide (CeO2) and investigate the effects of different loadings of CeO2 on their radiopacity and degree of conversion for the first time. CeO2 was characterized by X-ray diffraction analysis, Fourier transforms infrared spectroscopy, and laser diffraction for particle size
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26

Solovyeva, A. E. "The defects of structural and phase transformations in polycrystalline cerium dioxide under heating in vacuum and in air." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 7 (November 30, 2023): 42–51. http://dx.doi.org/10.17073/1683-4518-2023-7-42-51.

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Structural changes in cerium dioxide, when heated in vacuum in the range of 25‒1600 °C, in air in the range of 25‒1500 °C, and during successive annealing in the range of 1600‒2100 °C in air, followed by quenching in water, were studied. In the crystal lattice of CeO2‒х, the F → F1 phase transformation in vacuum proceeds in the range of 1100‒1600 °C; additionally, at 1200 °C, X-ray lines of the C-type Ce2O3 phase appear. The thermal expansion coefficient of phases of the fluorite type F and F1 in the range of 25‒1500 °C in air, as well as phases of the fluorite type F, F1 and type C Ce2O3 in t
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27

Serafin, Jarosław, and Jordi Llorca. "Nanoshaped Cerium Oxide with Nickel as a Non-Noble Metal Catalyst for CO2 Thermochemical Reactions." Molecules 28, no. 7 (2023): 2926. http://dx.doi.org/10.3390/molecules28072926.

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Four different nanoshapes of cerium dioxide have been prepared (polycrystals, rods, cubes, and octahedra) and have been decorated with different metals (Ru, Pd, Au, Pt, Cu, and Ni) by incipient wetness impregnation (IWI) and ball milling (BM) methods. After an initial analysis based on oxygen consumption from CO2 pulse chemisorption, Ni-like metal, and two forms of CeO2 cubes and rods were selected for further research. Catalysts were characterized using the Brunauer-Emmett-Teller formula (BET), X-ray spectroscopy (XRD), Raman spectroscopy, scanning electron microscopy (SEM), UV–visible spectr
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28

Vangelista, Silvia, Rossella Piagge, Satu Ek, Tiina Sarnet, Gabriella Ghidini, and Alessio Lamperti. "Atomic Layer Deposition of Cerium Dioxide Film on TiN and Si Substrates: Structural and Chemical Properties." MRS Advances 2, no. 52 (2017): 3005–10. http://dx.doi.org/10.1557/adv.2017.404.

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ABSTRACTCerium dioxide (CeO2) thin films were deposited by atomic layer deposition (ALD) on both Si and TiN substrates. The ALD growth produces CeO2 cubic polycrystalline films on both substrates. However, the films show a preferential orientation along <200> crystallographic direction for CeO2/Si or <111> for CeO2/TiN. In correspondence, we measure a relative concentration of Ce3+ equals to 22.0% in CeO2/Si and around 18% in CeO2/TiN, by X-ray photoelectron spectroscopy. Such values indicate the presence of oxygen vacancies in the films. Our results underline the films differences
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29

Baranchikov, Alexander E., Mikhail I. Razumov, Svetlana V. Kameneva, et al. "Facile Synthesis of Stable Cerium Dioxide Sols in Nonpolar Solvents." Molecules 27, no. 15 (2022): 5028. http://dx.doi.org/10.3390/molecules27155028.

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A method is proposed for the preparation of stable sols of nanocrystalline cerium dioxide in nonpolar solvents, based on surface modification of CeO2 nanoparticles obtained by thermal hydrolysis of concentrated aqueous solutions of ammonium cerium(IV) nitrate with residues of 2-ethylhexanoic and octanoic acids. The synthesis was carried out at temperatures below 100 °C and did not require the use of expensive and toxic reagents. An assessment of the radical-scavenging properties of the obtained sols using the superoxide anion-radical neutralization model revealed that they demonstrate notable
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30

Lee, Doohwan, Seung Hee Hong, and Eunyoung Yu. "Modulation of the Intrinsic Radical Scavenging Properties of CeO2 Nanoparticles." ECS Meeting Abstracts MA2024-01, no. 36 (2024): 2097. http://dx.doi.org/10.1149/ma2024-01362097mtgabs.

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Cerium dioxide (CeO2) has been extensively investigated as a scavenger of reactive oxygen radicals, particularly in the context of polymer electrolyte membrane fuel cells. This study focuses on elucidating the impact of exposed crystal facets of CeO2 nanoparticles on their radical scavenging activities. The manipulation of crystal shapes, including rod, cube, and octahedral forms, allows for controlled variation of the exposed crystal facets of CeO2 NPs. Characterization of the resulting CeO2 NPs is conducted using XRD, Raman spectroscopy, XPS, BET, and Fenton’s reaction. The research reveals
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31

Hudda, Komal, Barkha Rathee, Mukhan Wati, Sweety Ranga, and Rajdeep Tyagi. "Some Applications of CeO2 Nanoparticles." Oriental Journal Of Chemistry 39, no. 3 (2023): 684–93. http://dx.doi.org/10.13005/ojc/390319.

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Various properties of cerium oxide (Ceria, CeO2) have been widely used in recent times. This article aims at discussing some fundamental properties of ceria, its application due to oxygen vacancies in its structure, its effects due to nano-size, synthesis strategy to give it a structure with diverse applications. Some basic applications of ceria-based structure have been reviewed. Ceria nanoparticles are used in catalytic converters in the automotive industries to convert harmful carbon monoxide to less harmful carbon dioxide, semiconductor industries uses it as fine abrasive and polishing age
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32

Pecoraro, Roberta, Elena Maria Scalisi, Stefania Indelicato, et al. "Toxicity of Titanium Dioxide–Cerium Oxide Nanocomposites to Zebrafish Embryos: A Preliminary Evaluation." Toxics 11, no. 12 (2023): 994. http://dx.doi.org/10.3390/toxics11120994.

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The widespread use of metal nanoparticles in different fields has raised many doubts regarding their possible toxicity to living organisms and the accumulation and discharge of metals in fish species. Among these nanoparticles, titanium dioxide (TiO2) and cerium oxide (CeO2) nanoparticles have mainly been employed in photocatalysis and water depuration. The aim of this research was to evaluate the potential toxic effects, after a co-exposure of TiO2-3%CeO2 nanoparticles, on zebrafish development, using an acute toxicity test. Increasing concentrations of TiO2-3%CeO2 nanoparticles were used (0.
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33

Goodhead, Rhys M., Blair D. Johnston, Paula A. Cole, et al. "Does natural organic matter increase the bioavailability of cerium dioxide nanoparticles to fish?" Environmental Chemistry 12, no. 6 (2015): 673. http://dx.doi.org/10.1071/en15003.

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Environmental context Nanoparticles are present in growing volumes of consumer products and are suspected to be released into the environment at detectable levels. We focus on cerium dioxide nanoparticles and investigate their availability to fish from the water column, where we found increasing concentrations of natural organic material increased the ceria measured in the fish gills. This complex interaction between nanoparticle behaviour and uptake from environmentally relevant test systems is significantly understudied. Abstract Natural organic colloids affect the fate and behaviour of nano
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34

Mihara, Takeshi, Hiroaki Abe, Takeo Iwai, Takeshi Sonoda, and Eiichi Wakai. "Microstructural Evolution in Cerium Dioxide Irradiated with Heavy Ions at High Temperature." Advanced Materials Research 26-28 (October 2007): 929–32. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.929.

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Cerium dioxide (CeO2) is a well-studied oxide because of its technological applications, such as a major component in the catalysts, stable capacitors and so on. CeO2 with a cubic fluorite structure is also expected as the material for simulating behaviors of uranium dioxide under energetic particle irradiation, which leads high burn-up structure attributable to pressure increase in fuel cladding tubes. In this work, the stability of crystal structure and surface morphology change in CeO2 will be clarified. Polycrystalline samples were irradiated with 300 keV Xe+, 18 MeV I5+, 350 keV O+ and 12
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35

Molina Lozano, Alberto, and Maria Teresa Cortes Montañez. "Preliminary Study of Photoelectrochemical Properties of Electrosyntetized Cerium Dioxide (CeO2) to Pollutant Treatment." ECS Meeting Abstracts MA2022-01, no. 51 (2022): 2380. http://dx.doi.org/10.1149/ma2022-01512380mtgabs.

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1. Introduction In this work a systematic procedure to synthetize of cerium dioxide and evaluation and its photoelectrochemical properties for dye degradation in aqueous media is shown. First, electrochemical synthesis of CeO2 methodology is presented as function of annealing temeprature and concentration of Ce3+ precursors in the plating. Next, Raman spectra and FTIR analysis were presented to evaluate structural properties of films. Lineal sweep voltammetry (LSV) and chronoamperometry (CA) results are shown to evaluate the photocurrent and its stability of CeO2 and finally all the results we
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36

Gerward, L., and J. Staun Olsen. "Powder diffraction analysis of cerium dioxide at high pressure." Powder Diffraction 8, no. 2 (1993): 127–29. http://dx.doi.org/10.1017/s0885715600017966.

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CeO2 transforms to an orthorhombic PbCl2-type structure at a pressure of about 31 GPa. The phase transition is accompanied by a 9.8% volume contraction. The bulk modulus of the low-pressure fluorite-type structure is 236(4) GPa. Comparisons are made with the high-pressure behaviour of UO2 and ThO2.
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37

Ukwattage, Nadeesha L., and Zhang Zhiyong. "Impacts of Cerium Dioxide Nanoparticles on the Soil–Plant System and Their Potential Agricultural Applications." Nanomaterials 15, no. 12 (2025): 950. https://doi.org/10.3390/nano15120950.

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Cerium dioxide nanoparticles (CeO2-NPs) are increasingly used in various industrial applications, leading to their inevitable release into the environment including the soil ecosystem. In soil, CeO2-NPs are taken up by plants, translocated, and accumulated in plant tissues. Within plant tissues, CeO2-NPs have been shown to interfere with critical metabolic pathways, which may affect plant health and productivity. Moreover, their presence in soil can influence soil physico-chemical and biological properties, including microbial communities within the rhizosphere, where they can alter microbial
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38

Azhar, Mustaffa Ali, Monna Rozana, Mabel de Cunha, et al. "Effect of Annealing Temperature of Hybrid CeO2/TiO2 Nanotubes on the Photocurrent." Advanced Materials Research 1024 (August 2014): 132–35. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.132.

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Cerium oxide (CeO2) or known as ceria were deposited on titanium dioxide, TiO2, nanotubes by electrodeposition process as to produce hybrid materials that can generate photocurrent. The electrodeposition process is done by using 0.1 M cerium chloride mixed with 0.1 M ammonium acetate as ligands to promote stability complexes in a standard two electrode bath. Voltage and pH were controlled to ensure the most optimum condition of cerium oxide deposition. Samples were then annealed at different temperatures. Photocurrent results indicate that annealed sample at 450°C shows the best photocurrent d
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39

Li, Yan, Hongmei Sun, Zhiqi Yin, Xuexi Guo, and Jun Yan. "Anti-Inflammatory Effects of Cerium Dioxide Nanoparticles on Peritonitis in Rats Induced by Staphylococcus epidermidis Infection." Advances in Polymer Technology 2020 (March 25, 2020): 1–9. http://dx.doi.org/10.1155/2020/3591508.

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Objective. To investigate the effects of cerium dioxide (CeO2) nanoparticles on the inflammatory response of peritonitis rats induced by Staphylococcus epidermidis infection. Methods. Green tea polyphenol CeO2 nanoparticles were synthesized and characterized by transmission microscopy, ultraviolet-visible spectroscopy, FT-IR, and powder diffractometer. 40 male adult SD rats were randomly divided into 4 groups (n = 10 each): a control group, a model group, a CeO2 group, and a CeO2 + model group. Staphylococcus epidermidis solution was injected intraperitoneally with 107 CFU/ml of bacterial solu
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40

Pan, M. "Observation of in situ reduction of ceria-supported rhodium catalysts by electron beam irradiation." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 1022–23. http://dx.doi.org/10.1017/s0424820100089421.

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In rhodium catalysts supported on lanthanide oxides, significant difference in rhodium dispersions has been observed between cerium dioxide (CeO2) and sesquioxides (Ln2O3) by high resolution electron microscopy (HREM). This has been attributed to the different behaviors of the oxide supports during their impregnation with aqueous solution of rhodium nitrate (Rh(NO3)3). In the acid media, cerium dioxide has a higher reducibility while the sesquioxides have a higher solubility. So studying the catalyst precursor and the reduction process can provide an understanding of its interaction with the s
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41

Budiman, Harry, and Oman Zuas. "Adsorption Isotherm Studies on Acid Orange-10 Dye Removal using Cerium Dioxide Nanoparticles." Indonesian Journal of Chemistry 14, no. 3 (2014): 226–32. http://dx.doi.org/10.22146/ijc.21232.

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The adsorption capacity of AO-10 from aqueous solution onto CeO2-NPs was investigated under various reaction parameters. Batch mode experiments were conducted to assess the potential of the CeO2-NPs as adsorbent for the removal of AO-10 dye from aqueous solution. Equilibrium isotherm studies were carried out under an optimum reaction condition (i.e., AO-10 dye concentration = 15 mg/L, CeO2-NPS dosage = 2 g/L, pH of dye solution = 2) obtained from this study. The equilibrium data obtained were fitted to Langmuir, Freundlich, and Redlich-Peterson isotherm models. The results shows that, the line
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42

Baikin, A. S., E. O. Nasakina, A. G. Kolmakov, K. V. Sergienko, M. A. Sudarchikova, and M. A. Sevostyanov. "Properties of coatings based on cerium dioxide produced by magnetron sputtering." Physics and Chemistry of Materials Treatment 1 (2023): 64–75. http://dx.doi.org/10.30791/0015-3214-2023-1-64-74.

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The unique set of properties of coatings based on CeO2 has long been used in many industries. But the range of their potential application is no less wide, especially in view of the discovery of new properties. Magnetron deposition technology expands the area of possible application of coatings based on CeO2, making it possible to obtain products of various sizes and geometries. This review presents the parameters of magnetron sputtering of coatings based on cerium dioxide, their relationship with the structure and key properties of these coatings. The influence of the type of target, the intr
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43

Vasilev, A. P., A. A. Okhlopkova, T. S. Struchkova, and A. G. Alekseev. "Effect of mechanochemical activation of cerium dioxide on the structure and properties of polytetrafluoroethylene." Arctic and Subarctic Natural Resources 30, no. 2 (2025): 326–36. https://doi.org/10.31242/2618-9712-2025-30-2-326-336.

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As the demand for reliability and durability in polymer materials used in friction units and sealing systems continues to grow, it is essential to develop composites that exhibit enhanced tribological and mechanical properties. Polytetrafluoroethylene (PTFE) is a popular choice due to its exceptional antifriction qualities; however, its limited wear resistance restricts its application in extreme environments. To address this, we explored the modification of PTFE with cerium dioxide (CeO2) fillers to enhance its performance. The objective of this study was to examine how the mechanochemical ac
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44

Koventhan, Chelliah, An-Ya Lo, Chia-Chia Chang, and Ming-Liao Tsai. "Development of High-Performance Supercapacitor Electrodes Based on CeO2/SiO2/CMK-3 Composites." Processes 13, no. 6 (2025): 1766. https://doi.org/10.3390/pr13061766.

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A novel composite material consisting of cerium dioxide (CeO2), silica (SiO2), and mesoporous carbon (CMK-3) was developed for supercapacitor electrodes. The composite’s synthesis involved a high-surface-area porous carbon combined with CeO2 and SiO2. The resulting material was characterized by a high specific capacitance due to its mesoporous structure and enhanced dispersion CeO2 and SiO2. The effects of different types of CeO2 and SiO2 are also discussed. Both CeO2 and SiO2 components offer advantages such as abundance, low costs, and excellent catalytic properties. The composite’s structur
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45

Kozlova, Taisiya O., Darya N. Vasilyeva, Daniil A. Kozlov, et al. "A Comparative Study of Cerium(III) and Cerium(IV) Phosphates for Sunscreens." Molecules 29, no. 9 (2024): 2157. http://dx.doi.org/10.3390/molecules29092157.

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Crystalline cerium(III) phosphate (CePO4), cerium(IV) phosphates, and nanocrystalline ceria are considered to be promising components of sunscreen cosmetics. This paper reports on a study in which, for the first time, a quantitative comparative analysis was performed of the UV-shielding properties of CePO4, Ce(PO4)(HPO4)0.5(H2O)0.5, and CePO4/CeO2 composites. Both the sun protection factor and protection factor against UV-A radiation of the materials were determined. Ce(PO4)(HPO4)0.5(H2O)0.5 was shown to have a sun protection factor of 2.9, which is comparable with that of nanocrystalline ceri
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46

Rukiye, Öztekin. "Photocatalytic Degradation of Polyphenols and Polyaromatic Amines in Textile Industry Wastewaters by Nano-Cerium Dioxide Doped Titanium Dioxide and the Evaluation of Acute Toxicity Assays with Microtox and Daphnia magna." J Biomed Res Environ Sci 3, no. 8 (2022): 852–66. https://doi.org/10.37871/jbres1524.

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In this study, nano-cerium dioxide doped titanium-dioxide (CeO2-TiO2) Nanocomposites (NCs) was used for the photocatalytic degradation of pollutant parameters (color, polyphenols, polyaromatics) from a textile industry wastewater (TI ww) treatment plant located in Izmir, Turkey, at different operational conditions such as at increasing photocatalytic time (0, 10, 15, 20, 30, 60, 90 and 120 min), at different CeO2-TiO2 mass ratios (1%, 3%, 5%, 10%, 15%, 16%, 25%, 30%, 50%), at the different amounts of CeO2 (1, 3, 5, 8, 10, 15, 20 and 25 mg/L) under 130 W Ultraviolet (UV) and 35 W sun lights irr
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47

Channei, D., A. Nakaruk, S. Phanichphant, P. Koshy, and C. C. Sorrell. "Cerium Dioxide Thin Films Using Spin Coating." Journal of Chemistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/579284.

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Cerium dioxide (CeO2) thin films with varying Ce concentrations (0.1 to 0.9 M, metal basis) were deposited on soda-lime-silica glass substrates using spin coating. It was found that all films exhibited the cubic fluorite structure after annealing at 500°C for 5 h. The laser Raman microspectroscopy and GAXRD analyses revealed that increasing concentrations of Ce resulted in an increase in the degree of crystallinity. FIB and FESEM images confirmed the laser Raman and GAXRD analyses results owing to the predicted increase in film thickness with increasing Ce concentration. However, porosity and
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48

Habib, Sehrish, Eman Fayyad, Muddasir Nawaz, et al. "Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings." Nanomaterials 10, no. 4 (2020): 791. http://dx.doi.org/10.3390/nano10040791.

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The utilization of self-healing cerium dioxide nanoparticles (CeO2), modified with organic corrosion inhibitors (dodecylamine (DDA) and n-methylthiourea (NMTU)), in epoxy coating is an efficient strategy for enhancing the protection of the epoxy coating and increasing its lifetime. Fourier transform infrared (FTIR) spectroscopy analysis was used to confirm the loading and presence of inhibitors in the nanoparticles. Thermal gravimetric analysis (TGA) measurement studies revealed the amount of 25% and 29.75% w/w for NMTU and DDA in the nanoparticles, respectively. The pH sensitive and self-rele
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49

Manan, Wan Nabilah, Wan Nor Roslam Wan Isahak, and Zahira Yaakob. "CeO2-Based Heterogeneous Catalysts in Dry Reforming Methane and Steam Reforming Methane: A Short Review." Catalysts 12, no. 5 (2022): 452. http://dx.doi.org/10.3390/catal12050452.

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Transitioning to lower carbon energy and environment sustainability requires a reduction in greenhouse gases such as carbon dioxide (CO2) and methane (CH4) that contribute to global warming. One of the most actively studied rare earth metal catalysts is cerium oxide (CeO2) which produces remarkable improvements in catalysts in dry reforming methane. This paper reviews the management of CO2 emissions and the recent advent and trends in bimetallic catalyst development utilizing CeO2 in dry reforming methane (DRM) and steam reforming methane (SRM) from 2015 to 2021 as a way to reduce greenhouse g
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50

VORONIN , MIKHAIL, NATALIA GAVRILOVA , ELEONORA KOLTSOVA, and ANDREY ZHENSA. "SIMULATION OF AGGREGATION PROCESS IN CERIUM AND ZIRCONIUM DIOXIDE NANOPARTICLES." Computational Nanotechnology 9, no. 3 (2022): 73–79. http://dx.doi.org/10.33693/2313-223x-2022-9-3-73-79.

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A study of the aggregative stability of the CeO2-ZrO2 system was carried out in various pH ranges of the medium. To create a mathematical model of the stability of aggregates, the generalized DLVO theory was taken. The parameters of the structural component of the potential energy of particle interaction are determined using the principle of minimum entropy production. The limiting particle sizes of an an aggregatively stable system are determined.
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