Bibliografías temáticas / Cerium dioxide (CeO2)

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Literatura académica sobre el tema "Cerium dioxide (CeO2)"

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

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

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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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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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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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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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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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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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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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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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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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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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Tesis sobre el tema "Cerium dioxide (CeO2)"

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Walker, Nicholas David Leyland. "The role of the nano-environmental interface in ZnO and CeO2 nanoparticle ecotoxicology." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3734.

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An increase in nanotechnology has seen an associated rise in nanoparticles released into the environment. Their potential toxicity and exposure to humans and the environment, the field of nanoecotoxicology, is not yet well understood. The interactions at the nanoparticle surface will play a fundamental role in the nanoparticle behaviour once released into the environment. This study aims to characterise the particle surface interaction, determining key parameters influential in the nanoparticle fate. Evanescent Wave Cavity Ring Down Spectroscopy techniques have been applied to study molecular
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Werner, Kristin. "On the Role of Oxygen Vacancies in the Surface Chemistry of Ceria (CeO2)." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20496.

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Ceroxid (CeO2) wurde in den letzten Jahren als Katalysator für die Hydrierung von Alkinen zu Alkenen entdeckt und hat als solcher großes wissenschaftliches Interesse geweckt. Um weitere Einblicke in die Funktion von CeO2 in der Reaktion zu gewinnen, beschäftigt sich diese Arbeit mit der Adsorption von H2, CO2 und Propin, sowie mit der Interaktion von Hydroxylgruppen und Propin auf CeO2(111)-Oberflächen. Ein besonderer Fokus liegt dabei auf der Rolle von Sauerstoffleerstellen.<br>In recent years, ceria (CeO2) has attracted much scientific interest due to its activity as a catalyst in the select
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Rosalino, Israel. "Propriedades estruturais e eletrônicas de clusters de (TiO2)n e (CeO2)n, n = 1-15, usando a teoria do funcional da densidade." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-26072016-141834/.

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O uso de dióxidos de metais de transição em aplicações tecnológicas é bastante amplo, pois esses compostos possuem características importantes de semicondutores. Apesar de existir um grande número de estudos experimentais e teóricos, o entendimento das propriedades estruturais e eletrônicas desses compostos ainda não é satisfatória, principalmente quando se envolve o estudo de clusters. Clusters podem ser definidos como uma fase embrionária da matéria, pois são partículas contendo um número muito reduzido de átomos em comparação com partículas macroscópicas. Logo, suas propriedades estruturais
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Abbadi, Meryem. "Synthèse et caractérisation de solutions solides ZnO/CeO2 et CeO2/La2O3/ZnO pour la minéralisation photocatalytique du diclofénac de sodium en solution aqueuse." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAF019.

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La présence de résidus pharmaceutiques dans les milieux aquatiques est une préoccupation majeure. Parmi ceux-ci, le diclofénac de sodium est un anti-inflammatoire non stéroïdien détecté dans les eaux usées. Parmi les méthodes de traitement de ces eaux, la photocatalyse hétérogène constitue une méthode efficace et prometteuse. Comparé au TiO2, largement utilisé en photocatalyse, le ZnO est une alternative présentant une activité photocatalytique intéressante sous irradiation UV. Cependant, son activité photocatalytique est atténuée par une recombinaison de charge plus rapide et une mauvaise sép
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Benzakour, Mohammed. "Contribution à l'étude des composés non stoechiométriques partiellement ioniques application au dioxyde de cerium CeOx /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37611829r.

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Bourja, Lamia. "Étude du système CeO2-Bi2O3 pour applications catalytiques et conductimétriques." Phd thesis, Toulon, 2011. http://tel.archives-ouvertes.fr/tel-00659119.

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Dans le cadre général des études de matériaux multifonctionnels, électrolytiques et catalytiques, susceptibles d'être utilisés au sein de dispositifs de détection de gaz, un système d'oxydes (1-x)CeO2. x/2Bi2O3 avec 0≤x≤1 a été élaboré par coprécipitation puis traitement thermique à 600°C. Le système ainsi obtenu correspondrait à un diagramme de phases original, constitué d'un domaine de solutions solides (Ce1-xBixO2-z pour x ≤ 0,20), d'un domaine multiphasé pour 0,3≤x≤0,7 comportant une phase de type quadratique b'-Bi2O3 et une phase cubique substituée limite (x=0,20), d'un autre domaine mult
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Bourja, Lamia. "Étude du système CeO2-Bi2O3 pour applications catalytiques et conductimétriques." Electronic Thesis or Diss., Toulon, 2011. http://www.theses.fr/2011TOUL0007.

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Dans le cadre général des études de matériaux multifonctionnels, électrolytiques et catalytiques, susceptibles d’être utilisés au sein de dispositifs de détection de gaz, un système d’oxydes (1-x)CeO2. x/2Bi2O3 avec 0≤x≤1 a été élaboré par coprécipitation puis traitement thermique à 600°C. Le système ainsi obtenu correspondrait à un diagramme de phases original, constitué d’un domaine de solutions solides (Ce1-xBixO2-z pour x ≤ 0,20), d’un domaine multiphasé pour 0,3≤x≤0,7 comportant une phase de type quadratique b’-Bi2O3 et une phase cubique substituée limite (x=0,20), d’un autre domaine mult
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Salerno, Alicia. "Évaluation de l’efficacité de dégradation et de décontamination cutanée du CeO2 vis-à-vis d’un composé organophosphoré, le Paraoxon." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1145/document.

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Les neurotoxiques organophosphorés sont des agents chimiques qui font partie de la menace NRBC (nucléaire, radiologique, biologique, chimique). Ces agents peuvent pénétrer l'organisme par inhalation, ingestion ou absorption cutanée. La principale voie d'absorption des agents chimiques peu volatils (persistants), tels que le VX et l'ypérite, est la voie cutanée. La décontamination des surfaces cutanées non protégées est donc cruciale pour empêcher une absorption trop importante du toxique et une intoxication. Ce travail s'est attaché à évaluer la capacité de nanoparticules d'oxyde de cérium à a
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Koehle-Divo, Vanessa. "Effets de nanomatériaux chez deux espèces de bivalves le long d'un gradient de salinité : approches intégrées physiologiques et moléculaires." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0254.

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Les nanotechnologies sont en plein essor et mènent à l’incorporation de nanomatériaux manufacturés (NMM) dans les produits d’usage courant. La synthèse de NMM et l’utilisation des produits en contenant conduit au rejet dans l’environnement de NMM pour lesquels le risque n’est pas encore connu. Les propriétés physico-chimiques particulières des NMM rendent difficile l’évaluation de leur toxicité qui reste encore actuellement non complétement élucidée. Cette thèse est intégrée au projet ANR NanoSalt (2013 - 2017) et vise à évaluer le devenir et les effets de NMM de dioxyde de cérium et d’oxyde d
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Capítulos de libros sobre el tema "Cerium dioxide (CeO2)"

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Wang, Qun, Linyan Ye, Yi Yang, Xinglin Lv, and Jinfeng Lu. "Catalytic Ozonation of PA in Water in the Presence of Cerium Dioxide (CeO2)." In Advances in Intelligent and Soft Computing. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29455-6_25.

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Grygorova, G., V. Klochkov, Ye Mamotyuk, and Yu Malyukin. "Cerium Dioxide CeO2-x and Orthovanadate (Gd0.9Eu0.1VO4) Nanoparticles for Protection of Living Body from X-Ray Induced Damage." In Nanomaterials for Security. Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7593-9_23.

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Nawaz, Saba, Iqra Maqsood, Fatima Batool, et al. "Improvement of Abiotic Stress Tolerance in Plants with the Application of Nanoparticles." In Abiotic Stress in Plants - Adaptations to Climate Change [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.110201.

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Plants are under the threat of climatic changes and there is a reduction in productivity and deterioration in quality. The application of nanoparticles is one of the recent approaches to improve plant yield and quality traits. A number of nanoparticles, such as zinc nanoparticles (ZnO NPs), iron nanoparticles (Fe2O3 NPs), silicon nanoparticles (SiO2 NPs), cerium nanoparticles (CeO2 NPs), silver nanoparticles (Ag NPs), titanium dioxide nanoparticles (TiO2 NPs), and carbon nanoparticles (C NPs), have been reported in different plant species to play a role to improve the plant physiology and meta
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Aneggi, Eleonora, Carla de Leitenburg, Marta Boaro, Paolo Fornasiero, and Alessandro Trovarelli. "Catalytic applications of cerium dioxide." In Cerium Oxide (CeO₂): Synthesis, Properties and Applications. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-815661-2.00003-7.

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Actas de conferencias sobre el tema "Cerium dioxide (CeO2)"

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Krenzke, Peter, and Jane Davidson. "Thermodynamic Analysis of the Ceria Redox Cycle With Methane-Driven Reduction for Solar Fuel Production." In ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6332.

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The nonstoichiometric cerium oxide (ceria) redox cycle is an attractive pathway for storing energy from concentrated sunlight in chemical bonds by splitting water and carbon dioxide. The endothermic reduction reaction (R1)CeO2-δox→CeO2-δed+Δδ2O2 is favored thermodynamically at high temperatures and low oxygen partial pressures, while the CO2 and H2O splitting reactions (R2, R3) are exothermic and favored at lower temperatures and higher oxygen partial pressures. The produced hydrogen and carbon monoxide, referred to collectively as syngas, are important feedstocks used in the synthesis of ammo
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Kim, H. K., H. S. Choi, and C. H. Lee. "Failure Analysis of Plasma Sprayed ZrO2-CeO2-Y2O3 Thermal Barrier Coatings." In ITSC 1999, edited by E. Lugscheider and P. A. Kammer. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 1999. http://dx.doi.org/10.31399/asm.cp.itsc1999p0740.

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Abstract This paper aims to clarify the thermal and mechanical properties of zirconium dioxide-cerium(IV) oxide-yttrium oxide and zirconium dioxide-yttrium oxide plasma sprayed coatings. such as phase transformation, bond coat oxidation, and thermal expansion mismatch. Both coatings showed a 7 to 11% porosity fraction and typical lamellar structure, which formed due to continuous wetting by liquid droplets. It is observed that the zirconium dioxide-cerium(IV) oxide-yttrium oxide coating turned out to be better than the zirconium dioxide-yttrium oxide because there was no phase change from the
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Foral, Štěpán, David Salamon, Karel Katovský, Jan Varmuža, and Jakub Roleček. "Influence of Silicone Carbide on the Reactivity of Nuclear Fuels Using Cerium Dioxide as a Surrogate Material." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-31262.

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The most researched material in nuclear power industry is uranium dioxide however due to strict safety and sanitary restrictions this material can be researched only in specialized research institutes and universities which have sufficient technological background. For this reason it can be suitable to find material which would show physical properties similar to UO2 but would not suffer by the strict limitations in storage and handling. In this case much more workplaces could be incorporated in the material research and the list of investigated problems could be significantly enlarged. One of
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Vitorović-Todorović, Maja, Tamara Vujatović-Velimirov, Stevan Stupar, and Danica Bajić. "The design and preparation of cerium-dioxide and zirconium(IV)hydroxide-incorporated nanofibers for the degradation of chemical warfare agents." In 11th International Scientific Conference on Defensive Technologies - OTEX 2024. Military Technical Institute, Belgrade, 2024. http://dx.doi.org/10.5937/oteh24083v.

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Specifically designed nanofibers enriched with chemically active nanoparticles, capable of destruction of chemical warfare agents (CWA's) and other toxic chemicals are highly desirable for the incorporation in personal protective equipment and decontamination items. In this work, we prepared six types of nanofibrous materials, based on the two types of polymers, polyvinylchloride (PVC) and polyvinylbutyral (PVB). As carriers of active chemistry, nanoparticles of cerium-dioxide (CeO2) and zirconium(IV)hydroxide (Zr(OH)4) were used. The morphology of the samples obtained and their qualitative ch
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Wang, Qun, Xuedong Zhai, Jun Ma, and Yi Yang. "Catalytic Ozonation of MTBE in Water in the Presence of Iron Hydroxide (FeOOH) and Cerium Dioxide (CeO2)." In 2010 International Conference on Challenges in Environmental Science and Computer Engineering (CESCE 2010). IEEE, 2010. http://dx.doi.org/10.1109/cesce.2010.275.

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Sharma, Subodh Kumar, Arunesh Chandra, and K. V. Ojha. "Experimental Investigation on Emission Characteristics of Diesel-Neem Oil Biodiesel Blended with Nanoparticles in the Diesel-Powered Engine." In International Conference on Frontiers in Desalination, Energy, Environment and Material Sciences for Sustainable Development & Annual Congress of InDA. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.161.20.

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In the past two decades, the global energy demand has been troubled by uncertainty in two aspects. First, the price of conventional fossil fuels is very expensive, putting a further burden on the economies of importing countries. Second, the primary contributor to the increase in atmospheric carbon dioxide (CO2) as a result of global warming is the burning of fossil fuels. So, we must introduce an alternate fuel that reduces the burden on the economies of importing countries and reduces the emission of harmful gases which cause global warming. Biodiesel is the best alternative to conventional
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Siegel, Nathan P., Stephanie Livers, James E. Miller, and Richard B. Diver. "Cerium Oxide Materials for the Solar Thermochemical Decomposition of Carbon Dioxide." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90091.

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We have experimentally investigated the thermochemical decomposition of carbon dioxide using pure cerium oxide fibrous structures. Experiments were conducted on-sun with a solar furnace and include two reaction steps: the thermal reduction of CeOα to CeOβ between 1500°C and 1600°C, and the re-oxidation of CeOβ to produce carbon monoxide under flowing carbon dioxide at temperatures between 800°C and 1200°C. A ceria-based cycle offers some advantages over similar thermochemical cycles including the reduction of sintering and volatility issues during thermal reduction, a stable crystal structure
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Nedelkovski, Vladan, Dragana Medić, Aleksandar Cvetković, et al. "Anode nanomaterial recovered from spent batteries for peroxide-assisted crystal violet photocatalytic degradation." In Proceedings of XVI International Mineral Processing and Recycling Conference, Belgrade, 28-30.05.2025. University of Belgrade, Technical Faculty, Bor, 2024. https://doi.org/10.5937/imprc25119n.

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This study explores the photocatalytic degradation of Crystal Violet (CV) using anode nanomaterials recovered from spent nickel-metal hydride (NiMH) batteries, activated by hydrogen peroxide (H₂O₂). The research focuses on the potential application of recycled perovskite-based materials, such as Lanthanum Cobalt Oxide (LaCoO₃), Nickel Oxide (NiO), and Cerium Dioxide (CeO₂), for the efficient removal of organic dyes from textile industry wastewater. Structural characterization via X-ray diffraction (XRD) confirmed the presence of crystalline phases with high crystallinity, essential for photoca
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