1
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Bayani A, Gebhardt J, Elsässer C. Electronic Bulk and Surface Properties of Titanium Dioxide Studied by DFT-1/2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14922-14934. [PMID: 37830187 DOI: 10.1021/acs.langmuir.3c01698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Transparent conductive oxides, such as TiO2, are important functional materials for optoelectronic and photovoltaic devices. We investigate the electronic bulk properties of the TiO2 phases rutile and anatase with the DFT-1/2 method and obtain a quantitatively good description of their electronic band structures. We then applied this method to the (001) surfaces of rutile and anatase and calculated their ionization potentials (IPs) and work functions (WF). To relate these calculated surface properties with values from experiments, we evaluated the effect of varying the oxygen stoichiometry at the surface on both IP and WF.
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Affiliation(s)
- Amirhossein Bayani
- Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstraße 11, 79108 Freiburg, Germany
| | - Julian Gebhardt
- Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstraße 11, 79108 Freiburg, Germany
- Cluster of Excellence livMatS at FIT, Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Christian Elsässer
- Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstraße 11, 79108 Freiburg, Germany
- Cluster of Excellence livMatS at FIT, Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
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2
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Richard A, Corà F. Influence of Dispersion Interactions on the Polymorphic Stability of Crystalline Oxides. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:10766-10776. [PMID: 37313119 PMCID: PMC10259254 DOI: 10.1021/acs.jpcc.3c01013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/11/2023] [Indexed: 06/15/2023]
Abstract
The accurate determination of relative phase stabilities using DFT methods is a significant challenge when some of these can vary by only a few kJ/mol. Here, we demonstrate that for a selection of oxides (TiO2, MnO2, and ZnO) the inclusion of dispersion interactions, accomplished using the DFT-D3 correction scheme, allows for the correct ordering and an improved calculation of the energy differences between polymorphic phases. The energetic correction provided is of the same order of magnitude as the energy difference between phases. D3-corrected hybrid functionals systematically yield results closest to experiment. We propose that the inclusion of dispersion interactions makes a significant contribution to the relative energetics of polymorphic phases, especially those with different densities, and should therefore be included for calculations of relative energies using DFT methods.
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3
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Hellier A, Chizallet C, Raybaud P. PtO x Cl y (OH) z (H 2 O) n Complexes under Oxidative and Reductive Conditions: Impact of the Level of Theory on Thermodynamic Stabilities. Chemphyschem 2023; 24:e202200711. [PMID: 36216780 PMCID: PMC10100086 DOI: 10.1002/cphc.202200711] [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: 09/22/2022] [Revised: 10/07/2022] [Indexed: 02/03/2023]
Abstract
Platinum-based catalysts with Cl- , OH- , O2- and H2 O ligands, are involved in many industrial processes. Their final chemical properties are impacted by calcination and reduction applied during the preparation and activation steps. We investigate their stability under these reactive conditions with density functional theory (DFT). We benchmark various functionals (PBE-dDsC, optPBE, B3LYP, HSE06, PBE0, TPSS, RTPSS and SCAN) against ACFDT-RPA. PBE-dDsC is well adapted, although hybrid functionals are more accurate for redox reactions. Thermodynamic phase diagrams are determined by computing the chemical potential of the species as a function of temperature and partial pressures of H2 O, HCl, O2 and H2 . The stability and nature of the Pt species are highly sensitive to the activation conditions. Under O2 , high temperatures favour PtO2 while under H2 , platinum is easily reduced to Pt(0). Chlorine modifies the coordination sphere of platinum during calcination by stabilizing PtCl4 and shifts the reduction of platinum to higher temperatures under H2 .
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Affiliation(s)
- Adrien Hellier
- IFP Energies Nouvelles, Rond-point de l'échangeur de Solaize, BP 3-69360, Solaize, France
| | - Céline Chizallet
- IFP Energies Nouvelles, Rond-point de l'échangeur de Solaize, BP 3-69360, Solaize, France
| | - Pascal Raybaud
- IFP Energies Nouvelles, Rond-point de l'échangeur de Solaize, BP 3-69360, Solaize, France.,Univ Lyon, ENS de Lyon, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie UMR 5182, 69342, Lyon, France
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4
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Musial J, Belet A, Mlynarczyk DT, Kryjewski M, Goslinski T, Lambert SD, Poelman D, Stanisz BJ. Nanocomposites of Titanium Dioxide and Peripherally Substituted Phthalocyanines for the Photocatalytic Degradation of Sulfamethoxazole. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193279. [PMID: 36234406 PMCID: PMC9565719 DOI: 10.3390/nano12193279] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 06/01/2023]
Abstract
Phthalocyanines (Pcs) are often used in photosensitization of titanium(IV) oxide, a commonly employed photocatalyst, as such an approach holds the promise of obtaining highly stable and efficient visible light-harvesting materials. Herein, we report on the preparation, characterization and photoactivity of a series of composites based on TiO2 and peripherally modified metallophthalocyanines: either tetrasulfonated or 4,4',4'',4'''-tetraazaphthalocyanines, with either copper(II), nickel(II) or zinc(II) as the central metal ion. Physicochemical characterization was performed using UV-Vis diffuse reflectance spectroscopy, hydrodynamic particle-size analysis, surface-area analysis using N2 adsorption-desorption measurements and thermogravimetry combined with differential scanning calorimetry. The band-gap energy values were lower for the composites with peripherally modified phthalocyanines than for the commercial TiO2 P25 or the unsubstituted zinc(II) phthalocyanine-grafted TiO2. TG-DSC results confirmed that the chemical deposition, used for the preparation of Pc/TiO2 composites, is a simple and efficient method for TiO2 surface modification, as all the Pc load was successfully grafted on TiO2. The photocatalytic potential of the Pc/TiO2 materials was assessed in the photocatalytic removal of sulfamethoxazole-a commonly used antibacterial drug of emerging ecological concern. To compare the activity of the materials in different conditions, photodegradation tests were conducted both in water and in an organic medium.
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Affiliation(s)
- Joanna Musial
- Chair and Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Artium Belet
- Department of Chemical Engineering–Nanomaterials, Catalysis, Electrochemistry, University of Liege, Building B6a, Allée du 6 Août 11, B-4000 Liège, Belgium
| | - Dariusz T. Mlynarczyk
- Chair and Department of Chemical Technology of Drugs, Faculty of Pharmacy, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Michal Kryjewski
- Chair and Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznań, Poland
| | - Tomasz Goslinski
- Chair and Department of Chemical Technology of Drugs, Faculty of Pharmacy, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Stéphanie D. Lambert
- Department of Chemical Engineering–Nanomaterials, Catalysis, Electrochemistry, University of Liege, Building B6a, Allée du 6 Août 11, B-4000 Liège, Belgium
| | - Dirk Poelman
- LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281 S1, B-9000 Ghent, Belgium
| | - Beata J. Stanisz
- Chair and Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
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5
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Jana S, Constantin LA, Smiga S, Samal P. Solid-state performance of a meta-GGA screened hybrid density functional constructed from Pauli kinetic enhancement factor dependent semilocal exchange hole. J Chem Phys 2022; 157:024102. [DOI: 10.1063/5.0096674] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The semilocal form of the exchange hole is highly useful in developing non-local range-separated hybrid density functionals for finite and extended systems. The way to construct the conventional exact exchange hole model is based on either the Taylor series expansion or the reverse engineering technique from the corresponding exchange energy functional. Although the latter technique is quite popular in context of generalized gradient approximation (GGA) functionals, the same for the meta-GGA functionals is not so much explored. Thus, in this study, we propose a reverse-engineered semilocal exchange hole of a meta-GGA functional, that depends only on the meta-GGA ingredient α (also known as the Pauli kinetic energy enhancement factor). The model is used subsequently to design the short-range-separated meta-GGA hybrid density functional. We show that the present method can be successfully applied for several challenging problems in the context of solids, especially for which the GGA based hybrid fails drastically. This assessment proves that the present functional is quite useful for materials sciences. Finally, we also use this method for several molecular test cases, where the results are also as comparative as its base semilocal functional.
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Affiliation(s)
- Subrata Jana
- Department of Chemistry and Biochemistry, The Ohio State University, United States of America
| | - Lucian A. Constantin
- Istituto di Nanoscienze, Consiglio Nazionale delle Ricerche CNR-NANO, 41125 Modena, Italy, Italy
| | - Szymon Smiga
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University Institute of Physics, Poland
| | - Prasanjit Samal
- School of Physical Sciences, National Institute of Science Education and Research, India
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6
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Shang Z, Liu X, Liu J, Liu B, Yu Q, Lai Z, Ding N, Zhong S, Li X. Double core-shell structure stabilized porous Si@graphene@TiO2 microsphere anode with excellent cyclability and high coulombic efficiency. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.139893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Ament S, Amsler M, Sutherland DR, Chang MC, Guevarra D, Connolly AB, Gregoire JM, Thompson MO, Gomes CP, van Dover RB. Autonomous materials synthesis via hierarchical active learning of nonequilibrium phase diagrams. SCIENCE ADVANCES 2021; 7:eabg4930. [PMID: 34919429 PMCID: PMC8682983 DOI: 10.1126/sciadv.abg4930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Autonomous experimentation enabled by artificial intelligence offers a new paradigm for accelerating scientific discovery. Nonequilibrium materials synthesis is emblematic of complex, resource-intensive experimentation whose acceleration would be a watershed for materials discovery. We demonstrate accelerated exploration of metastable materials through hierarchical autonomous experimentation governed by the Scientific Autonomous Reasoning Agent (SARA). SARA integrates robotic materials synthesis using lateral gradient laser spike annealing and optical characterization along with a hierarchy of AI methods to map out processing phase diagrams. Efficient exploration of the multidimensional parameter space is achieved with nested active learning cycles built upon advanced machine learning models that incorporate the underlying physics of the experiments and end-to-end uncertainty quantification. We demonstrate SARA’s performance by autonomously mapping synthesis phase boundaries for the Bi2O3 system, leading to orders-of-magnitude acceleration in the establishment of a synthesis phase diagram that includes conditions for stabilizing δ-Bi2O3 at room temperature, a critical development for electrochemical technologies.
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Affiliation(s)
- Sebastian Ament
- Department of Computer Science, Cornell University, Ithaca, NY 14853, USA
| | - Maximilian Amsler
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
- Corresponding author. (M.A.); (C.P.G.)
| | - Duncan R. Sutherland
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Ming-Chiang Chang
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Dan Guevarra
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA
| | - Aine B. Connolly
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
| | - John M. Gregoire
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA
| | - Michael O. Thompson
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Carla P. Gomes
- Department of Computer Science, Cornell University, Ithaca, NY 14853, USA
- Corresponding author. (M.A.); (C.P.G.)
| | - R. Bruce van Dover
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
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8
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Zhang MY, Jiang H. Accurate Prediction of Band Structure of FeS 2: A Hard Quest of Advanced First-Principles Approaches. Front Chem 2021; 9:747972. [PMID: 34650959 PMCID: PMC8506039 DOI: 10.3389/fchem.2021.747972] [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: 07/27/2021] [Accepted: 09/14/2021] [Indexed: 11/13/2022] Open
Abstract
The pyrite and marcasite polymorphs of FeS2 have attracted considerable interests for their potential applications in optoelectronic devices because of their appropriate electronic and optical properties. Controversies regarding their fundamental band gaps remain in both experimental and theoretical materials research of FeS2. In this work, we present a systematic theoretical investigation into the electronic band structures of the two polymorphs by using many-body perturbation theory with the GW approximation implemented in the full-potential linearized augmented plane waves (FP-LAPW) framework. By comparing the quasi-particle (QP) band structures computed with the conventional LAPW basis and the one extended by high-energy local orbitals (HLOs), denoted as LAPW + HLOs, we find that one-shot or partially self-consistent GW (G 0 W 0 and GW 0, respectively) on top of the Perdew-Burke-Ernzerhof (PBE) generalized gradient approximation with a converged LAPW + HLOs basis is able to remedy the artifact reported in the previous GW calculations, and leads to overall good agreement with experiment for the fundamental band gaps of the two polymorphs. Density of states calculated from G 0 W 0@PBE with the converged LAPW + HLOs basis agrees well with the energy distribution curves from photo-electron spectroscopy for pyrite. We have also investigated the performances of several hybrid functionals, which were previously shown to be able to predict band gaps of many insulating systems with accuracy close or comparable to GW. It is shown that the hybrid functionals considered in general fail badly to describe the band structures of FeS2 polymorphs. This work indicates that accurate prediction of electronic band structure of FeS2 poses a stringent test on state-of-the-art first-principles approaches, and the G 0 W 0 method based on semi-local approximation performs well for this difficult system if it is practiced with well-converged numerical accuracy.
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Affiliation(s)
| | - Hong Jiang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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9
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Shoko E, Dang Y, Han G, Duff BB, Dyer MS, Daniels LM, Chen R, Blanc F, Claridge JB, Rosseinsky MJ. Polymorph of LiAlP 2O 7: Combined Computational, Synthetic, Crystallographic, and Ionic Conductivity Study. Inorg Chem 2021; 60:14083-14095. [PMID: 34463491 DOI: 10.1021/acs.inorgchem.1c01396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a new polymorph of lithium aluminum pyrophosphate, LiAlP2O7, discovered through a computationally guided synthetic exploration of the Li-Mg-Al-P-O phase field. The new polymorph formed at 973 K, and the crystal structure, solved by single-crystal X-ray diffraction, adopts the orthorhombic space group Cmcm with a = 5.1140(9) Å, b = 8.2042(13) Å, c = 11.565(3) Å, and V = 485.22(17) Å3. It has a three-dimensional framework structure that is different from that found in other LiMIIIP2O7 materials. It transforms to the known monoclinic form (space group P21) above ∼1023 K. Density functional theory (DFT) calculations show that the new polymorph is the most stable low-temperature structure for this composition among the seven known structure types in the AIMIIIP2O7 (A = alkali metal) families. Although the bulk Li-ion conductivity is low, as determined from alternating-current impedance spectroscopy and variable-temperature static 7Li NMR spectra, a detailed analysis of the topologies of all seven structure types through bond-valence-sum mapping suggests a potential avenue for enhancing the conductivity. The new polymorph exhibits long (>4 Å) Li-Li distances, no Li vacancies, and an absence of Li pathways in the c direction, features that could contribute to the observed low Li-ion conductivity. In contrast, we found favorable Li-site topologies that could support long-range Li migration for two structure types with modest DFT total energies relative to the new polymorph. These promising structure types could possibly be accessed from innovative doping of the new polymorph.
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Affiliation(s)
- Elvis Shoko
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Yun Dang
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Guopeng Han
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Benjamin B Duff
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.,Stephenson Institute for Renewable Energy, University of Liverpool, Peach Street, Liverpool L69 7ZF, U.K
| | - Matthew S Dyer
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Luke M Daniels
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Ruiyong Chen
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Frédéric Blanc
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.,Stephenson Institute for Renewable Energy, University of Liverpool, Peach Street, Liverpool L69 7ZF, U.K
| | - John B Claridge
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Matthew J Rosseinsky
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
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10
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McNeary WW, Tacey SA, Lahti GD, Conklin DR, Unocic KA, Tan ECD, Wegener EC, Erden TE, Moulton S, Gump C, Burger J, Griffin MB, Farberow CA, Watson MJ, Tuxworth L, Van Allsburg KM, Dameron AA, Buechler K, Vardon DR. Atomic Layer Deposition with TiO 2 for Enhanced Reactivity and Stability of Aromatic Hydrogenation Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02101] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- W. Wilson McNeary
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Sean A. Tacey
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Gabriella D. Lahti
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Davis R. Conklin
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Kinga A. Unocic
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Eric C. D. Tan
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Evan C. Wegener
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | | | - Staci Moulton
- Forge Nano Inc, Thornton, Colorado 80241, United States
| | - Chris Gump
- Forge Nano Inc, Thornton, Colorado 80241, United States
| | | | - Michael B. Griffin
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Carrie A. Farberow
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | | | - Luke Tuxworth
- Johnson Matthey Technology Centre, Billingham TS23 1LB U.K
| | - Kurt M. Van Allsburg
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | | | | | - Derek R. Vardon
- Catalytic Carbon Transformation & Scale-Up Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
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11
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Wang Y, Li Y, Chen J, Zhang IY, Xu X. Doubly Hybrid Functionals Close to Chemical Accuracy for Both Finite and Extended Systems: Implementation and Test of XYG3 and XYGJ-OS. JACS AU 2021; 1:543-549. [PMID: 34467317 PMCID: PMC8395692 DOI: 10.1021/jacsau.1c00011] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
While being widely used to understand the chemical reactions in heterogeneous catalysis or other multidisciplinary systems, a great challenge that semilocal and hybrid density functional approximations (DFAs) are facing is to deliver a uniformly accurate description for both finite and extended systems. Herein, we perform reliable and well-converged periodic calculations of two doubly hybrid approximations (DHAs), XYG3 and XYGJ-OS, and demonstrate that the good accuracy of DHAs achieved for molecules is transferable to the semiconductors and insulators. Such an accuracy is not only for energetic properties but also for the first- and second-order response properties, which is general for different kinds of chemical environments, including simple cubic bulks, perovskite-type transition metal oxides like TiO2, and heterogeneous systems like CO adsorption on the NaCl(100) surface. The present finding has strengthened the predictive power of DFT, which not only will inspire the future development of the top-rung DFAs but also will boost their applications in multidisciplinary studies with high accuracy and efficiency.
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Affiliation(s)
- Yizhen Wang
- Collaborative
Innovation Center of Chemistry for Energy Materials, Shanghai, Key
Laboratory of Molecular Catalysis and Innovative Materials, MOE Key
Laboratory of Computational Physical Sciences, Shanghai Key Laboratory
of Bioactive Small Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Yajing Li
- Collaborative
Innovation Center of Chemistry for Energy Materials, Shanghai, Key
Laboratory of Molecular Catalysis and Innovative Materials, MOE Key
Laboratory of Computational Physical Sciences, Shanghai Key Laboratory
of Bioactive Small Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Jun Chen
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese
Academy of Sciences, Fuzhou 350002, People’s Republic
of China
| | - Igor Ying Zhang
- Collaborative
Innovation Center of Chemistry for Energy Materials, Shanghai, Key
Laboratory of Molecular Catalysis and Innovative Materials, MOE Key
Laboratory of Computational Physical Sciences, Shanghai Key Laboratory
of Bioactive Small Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
| | - Xin Xu
- Collaborative
Innovation Center of Chemistry for Energy Materials, Shanghai, Key
Laboratory of Molecular Catalysis and Innovative Materials, MOE Key
Laboratory of Computational Physical Sciences, Shanghai Key Laboratory
of Bioactive Small Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
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12
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Khan A, Goepel M, Kubas A, Łomot D, Lisowski W, Lisovytskiy D, Nowicka A, Colmenares JC, Gläser R. Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Diformylfuran by Visible Light-Driven Photocatalysis over In Situ Substrate-Sensitized Titania. CHEMSUSCHEM 2021; 14:1351-1362. [PMID: 33453092 PMCID: PMC7986172 DOI: 10.1002/cssc.202002687] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Solar energy-driven processes for biomass valorization are priority for the growing industrialized society. To address this challenge, efficient visible light-active photocatalyst for the selective oxidation of biomass-derived platform chemical is highly desirable. Herein, selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) was achieved by visible light-driven photocatalysis over titania. Pristine titania is photocatalytically inactive under visible light, so an unconventional approach was employed for the visible light (λ=515 nm) sensitization of titania via a formation of a visible light-absorbing complex of HMF (substrate) on the titania surface. Surface-complexation of HMF on titania mediated ligand-to-metal charge transfer (LMCT) under visible light, which efficiently catalyzed the oxidation of HMF to DFF. A high DFF selectivity of 87 % was achieved with 59 % HMF conversion after 4 h of illumination. The apparent quantum yield obtained for DFF production was calculated to be 6.3 %. It was proposed that the dissociative interaction of hydroxyl groups of HMF and the titania surface is responsible for the surface-complex formation. When the hydroxyl groups of titania were modified via surface-fluorination or calcination the oxidation of HMF was inhibited under visible light, signifying that hydroxyl groups are decisive for photocatalytic activity.
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Affiliation(s)
- Ayesha Khan
- Institute of Physical ChemistryPolish Academy of SciencesWarsaw01-224Poland
| | - Michael Goepel
- Institute of Chemical TechnologyLeipzig UniversityLeipzig04103Germany
| | - Adam Kubas
- Institute of Physical ChemistryPolish Academy of SciencesWarsaw01-224Poland
| | - Dariusz Łomot
- Institute of Physical ChemistryPolish Academy of SciencesWarsaw01-224Poland
| | - Wojciech Lisowski
- Institute of Physical ChemistryPolish Academy of SciencesWarsaw01-224Poland
| | - Dmytro Lisovytskiy
- Institute of Physical ChemistryPolish Academy of SciencesWarsaw01-224Poland
| | - Ariadna Nowicka
- Institute of Physical ChemistryPolish Academy of SciencesWarsaw01-224Poland
| | | | - Roger Gläser
- Institute of Chemical TechnologyLeipzig UniversityLeipzig04103Germany
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13
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Xu J, Peng S, Li Z, Jiang S, Xie ZH, Munroe P. The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating. ULTRASONICS SONOCHEMISTRY 2021; 71:105406. [PMID: 33310652 PMCID: PMC7786559 DOI: 10.1016/j.ultsonch.2020.105406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/20/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
To alleviate the cavitation damage of metallic engineering components in hydrodynamic systems operating in marine environments, a NbN nanoceramic coating was synthesized on to a Ti-6Al-4V substrate via a double cathode glow discharge technique. The microstructure of the coating consisted of a ~13 μm thick deposition layer of a hexagonal δ'-NbN phase and a diffusion layer ~2 μm in thickness composed of face-centered cubic (fcc) B1-NaCl-structured (Ti,Nb)N. The NbN coating not only exhibited higher values of H/E and H2/E than those measured from NbN coatings deposited by other techniques, but also possessed good adhesion to the substrate. The cavitation erosion resistance of the NbN coating in a 3.5 wt% NaCl solution was investigated using an ultrasonic cavitation-induced apparatus combined with a range of electrochemical test methods. Potentiodynamic polarization measurements demonstrated that the NbN coated specimens demonstrated both a higher corrosion potential (Ecorr) and lower corrosion current density (icorr) than the uncoated substrate. Mott-Schottky analysis, combined with the point defect model (PDM), revealed that, for a given cavitation time, the donor density (ND) of the passive film on the NbN coating was reduced by 1 ~ 2 orders of magnitude relative to the uncoated Ti-6Al-4V, and the diffusivity of the point defects (D0) in the passive film grown on the NbN coating was nearly one order of magnitude lower than that on the uncoated substrate. In order to better understand the experimental observations obtained from Mott-Schottky analysis and double-charge layer capacitance measurements, first-principles density-functional theory was employed to calculate the energy of vacancy formation and the adsorption energy for chloride ions for the passive films present on both the NbN coating and bare Ti-6Al-4V.
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Affiliation(s)
- Jiang Xu
- Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, PR China.
| | - Shuang Peng
- Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, PR China
| | - Zhengyang Li
- Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shuyun Jiang
- Department of Mechanical Engineering, Southeast University, 2 Si Pai Lou, Nanjing 210096, PR China
| | - Zong-Han Xie
- School of Mechanical Engineering, University of Adelaide, SA 5005, Australia
| | - Paul Munroe
- School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia
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14
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Wojtaszek K, Błachucki W, Tyrała K, Nowakowski M, Zaja C M, Stȩpień J, Jagodziński P, Banaś D, Stańczyk W, Czapla-Masztafiak J, Kwiatek WM, Szlachetko J, Wach A. Determination of Crystal-Field Splitting Induced by Thermal Oxidation of Titanium. J Phys Chem A 2021; 125:50-56. [PMID: 33395294 DOI: 10.1021/acs.jpca.0c07955] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electronic structure of transition-metal oxides is a key component responsible for material's optical and chemical properties. Specifically for metal-oxide structures, the crystal-field interaction determines the shape, strength, and occupancy of electronic orbitals. Consequently, the crystal-field splitting and resulting unoccupied state populations can be foreseen as modeling factors of the photochemical activity. Herein, we study the formation of crystal-field effects during thermal oxidation of titanium in an ambient atmosphere and range of temperatures. The X-ray absorption spectroscopy is employed for quantitative analysis of average t2g-eg crystal-field splitting (Δoct) and relative t2g/eg bands occupancy. The obtained result shows that Δoct changes as a function of temperature from 1.97 eV for a passive oxide layer created on a Ti metal surface at room temperature to 2.41 eV at 600 °C when the material changes into the TiO2 rutile phase. On the basis of XAS data analysis, we show that the Δoct values determined from L2 and L3 absorption edges are equal, indicating that the 2p1/2 and 2p3/2 core holes screen the t2g and eg electronic states in a similar manner.
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Affiliation(s)
- Klaudia Wojtaszek
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
| | - Wojciech Błachucki
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
| | - Krzysztof Tyrała
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
| | - Michał Nowakowski
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland.,Department Chemie, Universität Paderborn, Warburger Str. 100, Paderborn 33098, Germany
| | - Marcin Zaja C
- National Synchrotron Radiation Centre Solaris, Jagiellonian University, Krakow 30-392, Poland
| | - Joanna Stȩpień
- AGH Academic Centre for Materials and Nanotechnology, Krakow 30-059, Poland
| | - Paweł Jagodziński
- Institute of Physics, Jan Kochanowski University, Kielce 25-406, Poland
| | - Dariusz Banaś
- Institute of Physics, Jan Kochanowski University, Kielce 25-406, Poland
| | - Wiktoria Stańczyk
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
| | | | - Wojciech M Kwiatek
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
| | - Jakub Szlachetko
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
| | - Anna Wach
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow 31-342, Poland
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15
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Moreira AJ, Campos LO, Maldi CP, Dias JA, Paris EC, Giraldi TR, Freschi GPG. Photocatalytic degradation of Prozac® mediated by TiO 2 nanoparticles obtained via three synthesis methods: sonochemical, microwave hydrothermal, and polymeric precursor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:27032-27047. [PMID: 32388756 DOI: 10.1007/s11356-020-08798-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/06/2020] [Indexed: 05/20/2023]
Abstract
Three different synthesis methods were applied to obtain TiO2 nanoparticles: microwave-assisted hydrothermal (TiO2-MW), sonochemical (TiO2-US), and polymeric precursor (TiO2-PP). The nanoparticles thus obtained presented 93% (TiO2-MW) and 92% (TiO2-US) anatase phase, and TiO2-PP 93% rutile phase. The TiO2-US sample performed best during the Prozac® photodegradation assays because of its lipophilic surface, attributable to the C-H groups therein. Additionally, adsorption rate and photodegradation were optimized by adjusting Prozac® solution to pH ~ 8. Following Prozac® photodegradation, quantitative monitoring of its by-products (PPMA, MAEB, and TFMP) was done using HPLC. This quantitative approach led us to conclude that semiconductor photoactivity cannot be discussed solely in terms of the main compound. Lastly, it was seen that these by-products compete with each other in the degradation mechanisms and are influenced by different materials. Graphical abstract.
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Affiliation(s)
- Ailton J Moreira
- Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil.
- Universidade Federal de São Carlos, Rod. Washington Luiz, km 110, cidade Universitária, São Carlos, SP, Brazil.
| | - Lilian O Campos
- Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil
| | - Caroline P Maldi
- Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil
| | - Jeferson A Dias
- Universidade Federal de São Carlos, Rod. Washington Luiz, km 110, cidade Universitária, São Carlos, SP, Brazil
| | - Elaine C Paris
- Embrapa Instrumentação Agropecuária, Rua XV de Novembro, São Carlos, SP, CEP: 13560-970, Brazil
| | - Tania R Giraldi
- Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil
| | - Gian P G Freschi
- Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil
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16
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Zhang M, Cui Z, Wang Y, Jiang H. Hybrid functionals with system‐dependent parameters: Conceptual foundations and methodological developments. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2020. [DOI: 10.1002/wcms.1476] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Min‐Ye Zhang
- Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering, Peking University Beijing China
| | - Zhi‐Hao Cui
- Division of Chemistry and Chemical Engineering California Institute of Technology Pasadena California USA
| | - Yue‐Chao Wang
- Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering, Peking University Beijing China
| | - Hong Jiang
- Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering, Peking University Beijing China
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17
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Singh A, Salminen T, Honkanen M, Nikkanen JP, Vuorinen T, Kari R, Vihinen J, Levänen E. Carbon coated TiO 2 nanoparticles prepared by pulsed laser ablation in liquid, gaseous and supercritical CO 2. NANOTECHNOLOGY 2019; 31:085602. [PMID: 31675742 DOI: 10.1088/1361-6528/ab53ba] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report on the synthesis of TiO2 nanoparticles using nanosecond pulse laser ablation of titanium in liquid, gaseous and supercritical CO2. The produced particles were observed to be mainly anatase-TiO2 with some rutile-TiO2. In addition, the particles were covered by a carbon layer. Raman and x-ray diffraction data suggested that the rutile content increases with CO2 pressure. The nanoparticle size decreased and size distribution became narrower with the increase in CO2 pressure and temperature, however the variation trend was different for CO2 pressure compared to temperature. Pulsed laser ablation in pressurized CO2 is demonstrated as a single step method for making anatase-TiO2/carbon nanoparticles throughout the pressure and temperature ranges 5-40 MPa and 30 °C-50 °C, respectively.
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Affiliation(s)
- Amandeep Singh
- Materials Science and Environmental Engineering Unit, Faculty of Engineering and Natural Sciences, PO Box 527 FI-33014, Tampere University, Tampere, Finland
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18
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Mahlberg D, Sakong S, Forster-Tonigold K, Groß A. Improved DFT Adsorption Energies with Semiempirical Dispersion Corrections. J Chem Theory Comput 2019; 15:3250-3259. [DOI: 10.1021/acs.jctc.9b00035] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- David Mahlberg
- Institute of Theoretical Chemistry, Ulm University, 89069 Ulm, Germany
| | - Sung Sakong
- Institute of Theoretical Chemistry, Ulm University, 89069 Ulm, Germany
| | - Katrin Forster-Tonigold
- Helmholtz Institute Ulm (HIU) for Electrochemical Energy Storage, 89069 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), P.O. Box
3640, 76021 Karlsruhe, Germany
| | - Axel Groß
- Institute of Theoretical Chemistry, Ulm University, 89069 Ulm, Germany
- Helmholtz Institute Ulm (HIU) for Electrochemical Energy Storage, 89069 Ulm, Germany
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19
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Zhang Y, Furness JW, Xiao B, Sun J. Subtlety of TiO2 phase stability: Reliability of the density functional theory predictions and persistence of the self-interaction error. J Chem Phys 2019; 150:014105. [PMID: 30621425 DOI: 10.1063/1.5055623] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yubo Zhang
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
| | - James W. Furness
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
| | - Bing Xiao
- State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
| | - Jianwei Sun
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
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20
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Bates JE, Sengupta N, Sensenig J, Ruzsinszky A. Adiabatic Connection without Coupling Constant Integration. J Chem Theory Comput 2018; 14:2979-2990. [DOI: 10.1021/acs.jctc.8b00067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jefferson E. Bates
- Department of Chemistry, Appalachian State University, Boone, North Carolina 28607, United States
| | - Niladri Sengupta
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Jonathon Sensenig
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Adrienn Ruzsinszky
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, United States
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21
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Affiliation(s)
- Elisa Jimenez-Izal
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
- Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), 20080 Donostia, Euskadi, Spain
| | - Anastassia N. Alexandrova
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
- California NanoSystems Institute, Los Angeles, California 90095, USA
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22
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Sun C, Xue D. Crystal growth: an anisotropic mass transfer process at the interface. Phys Chem Chem Phys 2017; 19:12407-12413. [DOI: 10.1039/c7cp01112a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mass transfer of growth units towards the interface promotes crystal growth, and the driving force essentially depends on anisotropic chemical bonding architectures.
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Affiliation(s)
- Congting Sun
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Dongfeng Xue
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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