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Li Y, Wang F, Liang M, Sun M, Xia L, Qu F. Fabrication of a two-dimensional bi-lanthanide metal-organic framework as a ratiometric fluorescent sensor based on energy competition. Talanta 2024; 278:126456. [PMID: 38917551 DOI: 10.1016/j.talanta.2024.126456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/09/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024]
Abstract
Bimetallic lanthanide metal-organic frameworks (bi-Ln-MOFs) exhibit great appeal for ratiometric luminescent sensors due to their unique advantages. Specially, the low-lying energy of the empty 4f band of Ce4+ ions benefits Ce-MOFs with robust and broad fluorescent emission. Therefore, constructing ratiometric sensors based on Ce-MOFs is of significance but remains a challenge. Here, a two-dimensional (2D) bi-Ln-MOF is fabricated using Eu3+/Ce4+ and 5-boronoisophthalic acid (5-bop) via a crystal phase transformation strategy to construct a ratiometric luminescent Hg2+ sensor. Due to the lower energy gap of Ce4+ compared to Eu3+ and the corresponding stronger energy-absorption ability, the Ce4+ in bi-Ln-MOF shows a stronger and broader fluorescent emission than that of Eu3+. The substitution of the boric acid group in the bi-Ln-MOF by Hg2+ amplifies the difference between the two lanthanide ions. Therefore, the fluorescence intensity of Ce4+ increases whereas that of Eu3+ decreases accordingly, a behavior distinct from individual Eu-MOF or Ce-MOF performance. This novel bi-Ln-MOF sensor not only achieves a wide linear response range from 0.5 to 120 μM with a low detection limit of 167 nM for Hg2+, but also demonstrates exceptional selectivity and stability. The intriguing sensing mechanism of energy competition and the novel synthesis approach for 2D bi-Ln-MOF are anticipated to broaden the application possibilities of bi-Ln-MOFs for designing ratiometric sensors.
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Affiliation(s)
- Yingying Li
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Fang Wang
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Maosheng Liang
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Mengyu Sun
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Lian Xia
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Fengli Qu
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China; Department of Pathology, Cancer Hospital of Zhejiang Province, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
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2
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Purktimatanont K, Mohdee V, Pancharoen U, Maneeintr K, Punyain W, Lothongkum AW. Synergistic effect of arsenic removal from petroleum condensate via liquid-liquid extraction: Thermodynamics, kinetics, DFT and McCabe-Thiele method. Heliyon 2023; 9:e23143. [PMID: 38205073 PMCID: PMC10777394 DOI: 10.1016/j.heliyon.2023.e23143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 11/08/2023] [Accepted: 11/27/2023] [Indexed: 01/12/2024] Open
Abstract
This work presents the purification of petroleum condensate by removing arsenic ions via liquid-liquid extraction (LLE). Influence of pure and synergistic extractants is investigated. In terms of the practicability, following parameters are examined: the type of extractant, operating time, and temperature. Response surface methodology is used to design parameters such as organic-aqueous ratio and extractant concentration. Under optimal conditions; a mixture of 1 mol/L HCl and 0.02 mol/L thiourea with an organic/aqueous ratio of 1:4 at 323.15 K for 60 min, the extraction of arsenic reached 78.2 %. Further, batch simulation via two-stage counter-current extraction, and estimation by McCabe-Thiele diagram proved to be enhanced arsenic extraction to 95.3 %. Analysis by FTIR show that arsenic ions in petroleum condensate are formed as triphenylarsine compound ((C6H5)3As). The process of arsenic removal proved to be zero-order endothermic, irreversible and spontaneous reaction. The results obtained from the density functional theory (DFT) confirm that arsenic ions react with the synergistic extractant: effectively forming a covalent bond (As-S).
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Affiliation(s)
- Kittamuk Purktimatanont
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Vanee Mohdee
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ura Pancharoen
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kreangkrai Maneeintr
- Carbon Capture, Storage and Utilization Research Group, Department of Mining and, Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wikorn Punyain
- Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Anchaleeporn W. Lothongkum
- Department of Chemical Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Ladkrabang, Bangkok, 10520, Thailand
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3
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Deason TK, Morrison G, Mofrad A, Tisdale HB, Amoroso J, DiPrete D, Was G, Sun K, Besmann TM, Zur Loye HC. Developing Waste Forms for Transuranic Elements: Quaternary Neptunium Fluorides of the Type Na xMNp 6F 30 (M = Ti, V, Cr, Mn, Fe, Co, Ni, Al, Ga). J Am Chem Soc 2023; 145:465-475. [PMID: 36534937 DOI: 10.1021/jacs.2c10669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A series of quaternary Np(IV) fluorides was synthesized using a mild hydrothermal synthesis approach. The compositions are all of the type NaxMNp6F30, where M = Ti(III), V(III), Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Al(III), and Ga(III) and x = 4 for divalent metals, x = 3 for trivalent metals. The compounds all crystallize in the P-3c1 space group and are isotypic with actinide analogues NaxMAn6F30 (An = Ce, U, Th, Pu). Structure data from the neptunium crystals were combined with data from the other actinide analogues to establish the tetravalent, nine-coordinated ionic radii of neptunium (1.030(2) Å), plutonium (1.014(1) Å), and cerium (1.012(2) Å). Radiation damage studies were also carried out on a surrogate material, the cerium analogue Na3AlCe6F30, which indicates that the structure type has low resistance to amorphization. Density functional theory calculations were carried out to compute the band gaps and enthalpies of formation variations among the isotypic cerium and actinide structures to compare the stability of the structures.
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Affiliation(s)
- Travis K Deason
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina29208, United States.,Savannah River National Laboratory, Aiken, South Carolina29803, United States
| | - Gregory Morrison
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina29208, United States
| | - Amir Mofrad
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Mechanical Engineering, University of South Carolina, Columbia, South Carolina29208, United States
| | - Hunter B Tisdale
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina29208, United States
| | - Jake Amoroso
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Savannah River National Laboratory, Aiken, South Carolina29803, United States
| | - David DiPrete
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Savannah River National Laboratory, Aiken, South Carolina29803, United States
| | - Gary Was
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2301 Bonisteel Blvd., Ann Arbor, Michigan48109, United States
| | - Kai Sun
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Materials Science and Engineering, University of Michigan, 3062 H.H. Dow, Ann Arbor, Michigan48109, United States
| | - Theodore M Besmann
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Mechanical Engineering, University of South Carolina, Columbia, South Carolina29208, United States
| | - Hans-Conrad Zur Loye
- Center for Hierarchical Waste Form Materials, University of South Carolina, Columbia, South Carolina29208, United States.,Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina29208, United States.,Savannah River National Laboratory, Aiken, South Carolina29803, United States
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4
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Brugnoli L, Urata S, Pedone A. H 2O 2adsorption and dissociation on various CeO 2(111) surface models: a first-principles study. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:164006. [PMID: 35130519 DOI: 10.1088/1361-648x/ac5278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Periodic density functional theory (DFT) calculations using the hybrid PBE0 functional and atom-centered Gaussian functions as basis sets were carried out to investigate the absorption and the first steps involved in the decomposition of hydrogen peroxide (H2O2) on three different models of the ceria (111) surface. One of the models is a clean surface, and the others are defective and partially hydroxylated ceria surfaces. On the clean surface, we found that the minimum energy path of hydrogen peroxide decomposition involves a three-step process, i.e., adsorption, deprotonation, and formation of the peroxide anion, stabilized through its interaction with the surface at a Ce (IV) site, with activation barriers of less than about 0.5 eV. The subsequent formation of superoxide anions and molecular oxygen species is attributed to electron transfer from the reactants to the Ce (IV) ions underneath. On the defective surface, H2O2dissociation is an energetically downhill reaction thermodynamically driven by the healing of the O vacancies, after the reduction and decomposition of H2O2into oxygen and water. On the hydroxylated surface, H2O2is first adsorbed by forming a favorable H-bond and then undergoes heterolytic dissociation, forming two hydroxyl groups at two vicinal Ce sites.
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Affiliation(s)
- Luca Brugnoli
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125 Modena, Italy
| | - Shingo Urata
- Planning Division, AGC Inc., Yokohama, Kanagawa 230-0045, Japan
| | - Alfonso Pedone
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125 Modena, Italy
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5
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Bjerregaard JD, Mikkelsen KV, Johnson MS. Hybrid DFT small-cluster model of CO oxidation on CeO2/(110). Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Fifere N, Airinei A, Dobromir M, Sacarescu L, Dunca SI. Revealing the Effect of Synthesis Conditions on the Structural, Optical, and Antibacterial Properties of Cerium Oxide Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2596. [PMID: 34685037 PMCID: PMC8539529 DOI: 10.3390/nano11102596] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 12/20/2022]
Abstract
Cerium oxide nanoparticles were prepared by a precipitation method using Ce(IV) sulphate as precursor dispersed in glycerol with varying synthesis parameters such as temperature or precipitating agent. The structural and morphological characteristics of the obtained nanoparticles were investigated by X-ray diffraction, transmission electron microscopy, and diffuse reflectance spectroscopy. The crystallite size of the nanoparticles varied between 13 and 17 nm. The presence of Ce3+ and Ce4+ was proved by XPS data in the CeO2 samples and the conservation of the fluorite structure was evinced by X-ray diffractograms with a contraction of the lattice parameter, regardless of the size of the nanoparticle. From diffuse reflectance spectra, two band gap energy values for the direct transition were observed. Depending on the synthesis condition, the red shift of gap energy and the blue shift of Urbach energy with increasing content of Ce3+ were ascertained. The antibacterial tests revealed that the cerium oxide nanoparticles show good antimicrobial activity towards the common pathogens Escherichia coli and Staphylococcus aureus.
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Affiliation(s)
- Nicusor Fifere
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.A.); (L.S.)
| | - Anton Airinei
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.A.); (L.S.)
| | - Marius Dobromir
- Department of Exact and Natural Sciences, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania;
| | - Liviu Sacarescu
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (A.A.); (L.S.)
| | - Simona I. Dunca
- Department of Microbiology, Biology Faculty, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506 Iasi, Romania;
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7
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Brugnoli L, Menziani MC, Urata S, Pedone A. Development and Application of a ReaxFF Reactive Force Field for Cerium Oxide/Water Interfaces. J Phys Chem A 2021; 125:5693-5708. [PMID: 34152149 DOI: 10.1021/acs.jpca.1c04078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ceria (CeO2) is a well-known catalytic oxide with many environmental, energy production, and industrial applications, most of them involving water as a reactant, byproduct, solvent, or simple spectator. In this work, we parameterized a Ce/O/H ReaxFF for the study of ceria and ceria/water interfaces. The parameters were fitted to an ab initio training set obtained at the DFT/PBE0 level, including the structures, cohesive energies, and elastic properties of the crystalline phases Ce, CeO2, and Ce2O3; the O-defective structures and energies of vacancy formation on CeO2 bulk and CeO2 (111) surface, as well as the absorption and reaction energies of H2 and H2O molecules on CeO2 (111). The new potential reproduced reasonably well all the fitted properties as well as the relative stabilities of the different ceria surfaces, the oxygen vacancies formation, and the energies and structures of associative and dissociative water molecules on them. Molecular dynamics simulations of the liquid water on the CeO2 (111) and CeO2 (100) surfaces were carried out to study the coverage and the mechanism of water dissociation. After equilibration, on average, 35% of surface sites of CeO2 (111) are hydroxylated whereas 15% of them are saturated with molecular water associatively adsorbed. As for the CeO2 (100) surface, we observed that water preferentially dissociates covering 90% of the available surface sites in excellent agreement with recent experimental findings.
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Affiliation(s)
- Luca Brugnoli
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, Modena 41125, , Italy
| | - Maria Cristina Menziani
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, Modena 41125, , Italy
| | - Shingo Urata
- Innovative Technology Laboratories, AGC Inc., Yokohama, Kanagawa 230-0045, Japan
| | - Alfonso Pedone
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, Modena 41125, , Italy
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8
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Sergentu DC, Booth CH, Autschbach J. Probing Multiconfigurational States by Spectroscopy: The Cerium XAS L 3 -edge Puzzle. Chemistry 2021; 27:7239-7251. [PMID: 33566372 DOI: 10.1002/chem.202100145] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Indexed: 11/11/2022]
Abstract
The Ce L3 edge XAS spectra of CeO2 and cerocene [Ce(C8 H8 )2 ] were calculated with relativistic ab-initio multireference wavefunction approaches capable of reproducing the observed spectra accurately. The study aims to resolve the decades-long puzzle regarding the relationship between the number and relative intensities of the XAS peaks and the 4f electron occupation in the ground state (GS) versus the core-excited states (ESs). CeO2 and cerocene exemplify the different roles of covalent bonding and wavefunction configurational composition in the observed intensity patterns. Good agreement is found between the calculated GS 4f-shell occupations and the value derived from XAS measurements using peak areas (nf ). The identity of the two-peaked Ce L3 edge is fully rationalized from the perspective of the relaxed wavefunctions for the GS and core ESs. The states underlying the different peaks differ from each other in a surprisingly simple way that can be associated with 4f1 vs. 4f0 sub-configurations. Furthermore, part of one of the cerocene spectral peaks is associated with 4f2 sub-configurations. The pattern therefore reveals excited states that can be interpreted in terms of Ce IV and III oxidation numbers, as long assumed, with Ce II states additionally appearing in the cerocene spectrum. While this work demonstrates the rough accuracy of the conventional approach to determining nf from Ce L3 -edge XAS, limitations are highlighted in terms of the ultimate accuracy of this approach and the potential of observing new types of excited states. The need to determine the sources of nf by calculations, is stressed.
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Affiliation(s)
- Dumitru-Claudiu Sergentu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260-3000, USA
| | - Corwin H Booth
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260-3000, USA
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9
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Efficient Separation of Photoexcited Charge at Interface between Pure CeO 2 and Y 3+-Doped CeO 2 with Heterogonous Doping Structure for Photocatalytic Overall Water Splitting. MATERIALS 2021; 14:ma14020350. [PMID: 33445720 PMCID: PMC7828182 DOI: 10.3390/ma14020350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 12/28/2020] [Accepted: 12/30/2020] [Indexed: 11/17/2022]
Abstract
Enhancement of photoexcited charge separation in semiconductor photocatalysts is one of the important subjects to improve the efficiency of energy conversion for photocatalytic overall water splitting into H2 and O2. In this study, we report an efficient separation of photoexcited charge at the interface between non-doped pure CeO2 and Y3+-doped CeO2 phases on particle surfaces with heterogeneous doping structure. Neither non-doped pure CeO2 and homogeneously Y3+-doped CeO2 gave activities for photocatalytic H2 and O2 production under ultraviolet light irradiation, meaning that both single phases showed little activity. On the other hand, Y3+-heterogeneously doped CeO2 of which the surface was composed of non-doped pure CeO2, and Y3+-doped CeO2 phases exhibited remarkable photocatalytic activities, indicating that the interfacial heterostructure between non-doped pure CeO2 and Y3+-doped CeO2 phases plays an important role for the activation process. The role of the interface between two different phases for activated expression was investigated by selective photo-reduction and oxidation deposition techniques of metal ion, resulting that the interface between two phases become an efficient separation site of photoexcited charge. Electronic band structures of both phases were investigated by the spectroscopic method, and then a mechanism of charge separation is discussed.
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10
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1H NMR of paramagnetic Dy3+ complex with DTPA-amide p-xylylene-cyclophane; possible probing action toward d-histidine and histamine. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Brugnoli L, Ferrari AM, Civalleri B, Pedone A, Menziani MC. Assessment of Density Functional Approximations for Highly Correlated Oxides: The Case of CeO 2 and Ce 2O 3. J Chem Theory Comput 2018; 14:4914-4927. [PMID: 30096235 DOI: 10.1021/acs.jctc.8b00600] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
CeO2 based materials are very attractive as catalytic components for industrial processes and environmentally friendly technologies; therefore, a reliable and computationally affordable theoretical description of the main properties of ceria is needed. In particular, the description of the interconversion between the Ce(IV) and Ce(III) oxidation states, on which lies the main chemical features of the cerium oxide, results in quite a challenge at the Density Functional Theory level. Here, we tested several density functional approximations, spanning from GGA to hybrid (Global, Meta-Global, and Range Separated Corrected) functionals, on the structural, vibrational, electronic, and thermochemical properties of bulk CeO2 and Ce2O3. GGA and Meta-GGA xc best predict the thermochemical data, while the discrepancies increase with the introduction of the exact exchange in hybrid functionals. Overall, the Short Range Corrected and Global Hybrid functionals with a percentage of Exact Exchange between 16 and 25 give the best description of the crystal properties. Then, a group of the best performing functionals has been tested on the formation energy of an oxygen vacancy at the (111) CeO2 surface. In general, increasing the amount of exact exchange in the hybrid functionals leads to a better description of the localized Ce 4 f states, while the energy of formation of the O vacancy decreases, worsening compared to the experiment.
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Affiliation(s)
- Luca Brugnoli
- Dipartimento di Scienze Chimiche e Geologiche , Università di Modena e Reggio Emilia , Via G. Campi 103 , I-41125 Modena , Italia
| | - Anna Maria Ferrari
- Dipartimento di Chimica , Università di Torino and NIS Centre of Excellence , Via P. Giuria 7 , I-10129 Torino , Italia
| | - Bartolomeo Civalleri
- Dipartimento di Chimica , Università di Torino and NIS Centre of Excellence , Via P. Giuria 7 , I-10129 Torino , Italia
| | - Alfonso Pedone
- Dipartimento di Scienze Chimiche e Geologiche , Università di Modena e Reggio Emilia , Via G. Campi 103 , I-41125 Modena , Italia
| | - Maria Cristina Menziani
- Dipartimento di Scienze Chimiche e Geologiche , Università di Modena e Reggio Emilia , Via G. Campi 103 , I-41125 Modena , Italia
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13
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Wu XP, Gagliardi L, Truhlar DG. Cerium Metal–Organic Framework for Photocatalysis. J Am Chem Soc 2018; 140:7904-7912. [DOI: 10.1021/jacs.8b03613] [Citation(s) in RCA: 198] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xin-Ping Wu
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Laura Gagliardi
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Donald G. Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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14
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Pham TA, Altman AB, Stieber SCE, Booth CH, Kozimor SA, Lukens WW, Olive DT, Tyliszczak T, Wang J, Minasian SG, Raymond KN. A Macrocyclic Chelator That Selectively Binds Ln4+ over Ln3+ by a Factor of 1029. Inorg Chem 2016; 55:9989-10002. [DOI: 10.1021/acs.inorgchem.6b00684] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tiffany A. Pham
- University of California, Berkeley, California 94720, United States
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Alison B. Altman
- University of California, Berkeley, California 94720, United States
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - S. Chantal E. Stieber
- Los Alamos National Laboratory (LANL), Los
Alamos, New Mexico 87545, United States
- California State Polytechnic University, Pomona, California 91768, United States
| | - Corwin H. Booth
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Stosh A. Kozimor
- Los Alamos National Laboratory (LANL), Los
Alamos, New Mexico 87545, United States
| | - Wayne W. Lukens
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Daniel T. Olive
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Tolek Tyliszczak
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Jian Wang
- Canadian Light Source (CLS), Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Stefan G. Minasian
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
| | - Kenneth N. Raymond
- University of California, Berkeley, California 94720, United States
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720, United States
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15
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Zhao J, Wang Y, Li Y, Yue X, Wang C. Phase-dependent enhancement for CO2 photocatalytic reduction over CeO2/TiO2 catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c6cy01365a] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of CeO2 can increase the activity of rutile for CO2 photoreduction under simulated sunlight irradiation because of the presence of Ti defects at the CeO2–rutile interfaces, and this is beneficial to the interfacial separation of photogenerated charge carriers.
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Affiliation(s)
- Jie Zhao
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Xinjiang 830011
| | - Yun Wang
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Xinjiang 830011
| | - Yingxuan Li
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Xinjiang 830011
| | - Xiu Yue
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Xinjiang 830011
| | - Chuanyi Wang
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Xinjiang 830011
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16
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Weck PF, Kim E. Assessing Hubbard-corrected AM05+U and PBEsol+U density functionals for strongly correlated oxides CeO2 and Ce2O3. Phys Chem Chem Phys 2016; 18:26816-26826. [DOI: 10.1039/c6cp05479j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure–property relationships of bulk CeO2 and Ce2O3 have been investigated within the DFT+U framework. AM05+U and PBEsol+U reproduce experimental crystalline parameters and properties with superior accuracy compared to conventional Hubbard-corrected exchange–correlation functionals.
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Affiliation(s)
| | - Eunja Kim
- Department of Physics and Astronomy
- University of Nevada Las Vegas
- Las Vegas
- USA
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17
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Chang MW, Sheu WS. The charge states of Au on gold-substituted Ce1−xO2(111) surfaces with multiple oxygen vacancies. Phys Chem Chem Phys 2016; 18:15884-93. [DOI: 10.1039/c6cp02647h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Not only does the Au charge have a trend of decreasing when the number of oxygen vacancies increases, but this charge also can be significantly changed by the oxygen vacancy configuration.
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Affiliation(s)
- Ming-Wen Chang
- Department of Chemistry
- Fu-Jen Catholic University
- New Taipei City 24205
- Republic of China
| | - Wen-Shyan Sheu
- Department of Chemistry
- Fu-Jen Catholic University
- New Taipei City 24205
- Republic of China
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18
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Altman AB, Pacold JI, Wang J, Lukens WW, Minasian SG. Evidence for 5d-σ and 5d-π covalency in lanthanide sesquioxides from oxygen K-edge X-ray absorption spectroscopy. Dalton Trans 2016; 45:9948-61. [DOI: 10.1039/c6dt00358c] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structure in the complete series of stable lanthanide sesquioxides, Ln2O3 (Ln = La to Lu, except radioactive Pm), has been evaluated using oxygen K-edge X-ray absorption spectroscopy with a scanning transmission X-ray microscope (STXM).
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Affiliation(s)
- Alison B. Altman
- Department of Chemistry
- University of California
- Berkeley CA 94720
- USA
- Chemical Sciences Division
| | - Joseph I. Pacold
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley CA 94720
- USA
| | - Jian Wang
- Canadian Light Source
- Saskatoon
- Canada
| | - Wayne W. Lukens
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley CA 94720
- USA
| | - Stefan G. Minasian
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley CA 94720
- USA
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19
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Yu SW, Carpenter MH, Ponce F, Friedrich S, Lee JS, Olalde-Velasco P, Yang WL, Åberg D. Energy levels of the Ce activator relative to the YAP(Ce) scintillator host. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:185501. [PMID: 25894617 DOI: 10.1088/0953-8984/27/18/185501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The electronic structure of the cerium-activated yttrium aluminum perovskite [YAP(Ce)] scintillator has been studied by core level x-ray spectroscopy and first-principles calculations. X-ray absorption and emission spectra at the oxygen K-edge of YAP(Ce) and CeO2 have been measured and compared with the calculated partial density of states. With the known band gap of CeO2, the measured oxygen K-edge absorption and emission spectra are used to construct a fixed relation between the valence and conduction bands of YAP and CeO2. This allows us to determine the fundamental band gap of YAP to be 8.1 ± 0.3 eV. A comparison between the cerium M4,5-edges x-ray absorption spectra of the YAP(Ce) and Ce model compounds (CeO2, CeF3, and Ce foils) then shows that the Ce activator is in the desired Ce(3+), with a small fraction of Ce(4+) due to oxidization at the surface. Finally, we determine that the ground state 4f(1) energy level of the Ce(3+) activator lies 1.8 ± 0.5 eV above the top of the valence band of the host YAP.
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Affiliation(s)
- S-W Yu
- Lawrence Livermore National Laboratory, Livermore, CA 94550,USA
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20
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Castleton CWM, Lee AL, Kullgren J, Hermansson K. Description of polarons in ceria using Density Functional Theory. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/526/1/012002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Paier J, Penschke C, Sauer J. Oxygen Defects and Surface Chemistry of Ceria: Quantum Chemical Studies Compared to Experiment. Chem Rev 2013; 113:3949-85. [DOI: 10.1021/cr3004949] [Citation(s) in RCA: 722] [Impact Index Per Article: 65.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Joachim Paier
- Institut
für Chemie, Humboldt Universität, 10099 Berlin, Germany
| | | | - Joachim Sauer
- Institut
für Chemie, Humboldt Universität, 10099 Berlin, Germany
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22
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Triple Click to Tripodal Triazole-Based Ligands - Synthesis and Characterization of Blue-Emitting Ce3+Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201361] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Affiliation(s)
- Eric W. McFarland
- Department
of Chemical Engineering, and ‡Department of Chemistry and Biochemistry, University of California, Santa Barbara,
California 93106, United States
| | - Horia Metiu
- Department
of Chemical Engineering, and ‡Department of Chemistry and Biochemistry, University of California, Santa Barbara,
California 93106, United States
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24
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Wang HF, Li HY, Gong XQ, Guo YL, Lu GZ, Hu P. Oxygen vacancy formation in CeO2 and Ce(1-x)Zr(x)O2 solid solutions: electron localization, electrostatic potential and structural relaxation. Phys Chem Chem Phys 2012; 14:16521-35. [PMID: 23080297 DOI: 10.1039/c2cp42220d] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ceria (CeO(2)) and ceria-based composite materials, especially Ce(1-x)Zr(x)O(2) solid solutions, possess a wide range of applications in many important catalytic processes, such as three-way catalysts, owing to their excellent oxygen storage capacity (OSC) through the oxygen vacancy formation and refilling. Much of this activity has focused on the understanding of the electronic and structural properties of defective CeO(2) with and without doping, and comprehending the determining factor for oxygen vacancy formation and the rule to tune the formation energy by doping has constituted a central issue in material chemistry related to ceria. However, the calculation on electronic structures and the corresponding relaxation patterns in defective CeO(2-x) oxides remains at present a challenge in the DFT framework. A pragmatic approach based on density functional theory with the inclusion of on-site Coulomb correction, i.e. the so-called DFT + U technique, has been extensively applied in the majority of recent theoretical investigations. Firstly, we review briefly the latest electronic structure calculations of defective CeO(2)(111), focusing on the phenomenon of multiple configurations of the localized 4f electrons, as well as the discussions of its formation mechanism and the catalytic role in activating the O(2) molecule. Secondly, aiming at shedding light on the doping effect on tuning the oxygen vacancy formation in ceria-based solid solutions, we summarize the recent theoretical results of Ce(1-x)Zr(x)O(2) solid solutions in terms of the effect of dopant concentrations and crystal phases. A general model on O vacancy formation is also discussed; it consists of electrostatic and structural relaxation terms, and the vital role of the later is emphasized. Particularly, we discuss the crucial role of the localized structural relaxation patterns in determining the superb oxygen storage capacity in kappa-phase Ce(1-x)Zr(1-x)O(2). Thirdly, we briefly discuss some interesting findings for the oxygen vacancy formation in pure ceria nanoparticles (NPs) uncovered by DFT calculations and compare those with the bulk or extended surfaces of ceria as well as different particle sizes, emphasizing the role of the electrostatic field in determining the O vacancy formation.
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Affiliation(s)
- Hai-Feng Wang
- Labs for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
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25
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Lutfalla S, Shapovalov V, Bell AT. Calibration of the DFT/GGA+U Method for Determination of Reduction Energies for Transition and Rare Earth Metal Oxides of Ti, V, Mo, and Ce. J Chem Theory Comput 2011; 7:2218-23. [DOI: 10.1021/ct200202g] [Citation(s) in RCA: 188] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suzanne Lutfalla
- Department of Chemical and Biomolecular Engineering, University of California-Berkeley, Berkeley, California 94720-1462, United States
| | - Vladimir Shapovalov
- Department of Chemical and Biomolecular Engineering, University of California-Berkeley, Berkeley, California 94720-1462, United States
| | - Alexis T. Bell
- Department of Chemical and Biomolecular Engineering, University of California-Berkeley, Berkeley, California 94720-1462, United States
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27
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Burow AM, Wende T, Sierka M, Włodarczyk R, Sauer J, Claes P, Jiang L, Meijer G, Lievens P, Asmis KR. Structures and vibrational spectroscopy of partially reduced gas-phase cerium oxide clusters. Phys Chem Chem Phys 2011; 13:19393-400. [DOI: 10.1039/c1cp22129a] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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28
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Graciani J, Márquez AM, Plata JJ, Ortega Y, Hernández NC, Meyer A, Zicovich-Wilson CM, Sanz JF. Comparative Study on the Performance of Hybrid DFT Functionals in Highly Correlated Oxides: The Case of CeO2 and Ce2O3. J Chem Theory Comput 2010; 7:56-65. [PMID: 26606218 DOI: 10.1021/ct100430q] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The outstanding catalytic properties of cerium oxides rely on the easy Ce(3+) ↔ Ce(4+) redox conversion, which however constitutes a challenge in density functional based theoretical chemistry due to the strongly correlated nature of the 4f electrons present in the reduced materials. In this work, we report an analysis of the performance of five exchange-correlation functionals (HH, HHLYP, PBE0, B3LYP, and B1-WC) implemented in the CRYSTAL06 code to describe three properties of ceria: crystal structure, band gaps, and reaction energies of the CeO2 → Ce2O3 process. All five functionals give values for cell parameters that are in fairly good agreement with experiment, although the PBE0 hybrid functional is found to be the most accurate. Band gaps, 2p-4f-5d in the case of CeO2 and 4f-5d in the case of Ce2O3, are found to be, in general, overestimated and drop off when the amount of Hartree-Fock exchange in the exchange-correlation functional decreases. In contrast, the reaction energies are found to be underestimated, and increase when the amount of HF exchange lowers. Overall, at its standard formulation, the B1-WC functional seems to be the best choice as it provides good band gaps and reaction energies, and very reasonable crystal parameters.
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Affiliation(s)
- Jesús Graciani
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - Antonio M Márquez
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - José J Plata
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - Yanaris Ortega
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - Norge C Hernández
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - Alessio Meyer
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - Claudio M Zicovich-Wilson
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
| | - Javier Fdez Sanz
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain; Departamento de Física Aplicada I, Universidad de Sevilla, 41011 Sevilla, Spain; Dipartimento IFM, Università di Torino, Via P. Giuria, 7, I-10125 Torino, Italy and Unitá INFM di Torino, Sezione F, via Giuria 5, I-10125 Torino, Italy; and Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, México
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29
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Tsipis AC, Stalikas AV. Structural, electronic, and magnetoresponsive properties of triangular lanthanide clusters and their free-standing nitrides. J Comput Chem 2010; 32:620-38. [DOI: 10.1002/jcc.21648] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Revised: 06/24/2010] [Accepted: 07/09/2010] [Indexed: 12/25/2022]
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30
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Migani A, Vayssilov GN, Bromley ST, Illas F, Neyman KM. Dramatic reduction of the oxygen vacancy formation energy in ceria particles: a possible key to their remarkable reactivity at the nanoscale. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01908a] [Citation(s) in RCA: 171] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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