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Sumer A, Jellinek J. Computational Studies of Structural, Energetic and Electronic Properties of Pure Pt and Mo and Mixed Pt/Mo Clusters: Comparative Analysis of Characteristics and Trends. J Chem Phys 2022; 157:034301. [DOI: 10.1063/5.0099760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The added technological potential of bimetallic clusters and nanoparticles, as compared to their pure counterparts, stems from the ability to further fine-tune their properties, and, consequently, functionalities, through a simultaneous use of the "knobs" of size and composition. The practical realization of this potential can be greatly advanced by the knowledge of the correlations and relationships between the various characteristics of bimetallic nanosystems and those of their pure counterparts and constituent components. Here we present results of a density functional theory study of pure Ptn and Mon clusters aimed at revisiting and exploring further their structural, electronic and energetic properties. These are then used as a basis for analysis and characterization of the results of calculations on two-component Ptn-mMom clusters. The analysis also includes establishing relationships between the properties of the Ptn-mMom clusters and those of their Ptn-m and Mom components. A particularly intriguing findings suggested by the calculations is a linear dependence of the average binding energy per atom in sets of Ptn-mMom clusters that have the same fixed number m of Mo atoms and different number n-m of Pt atoms on the fractional content (n-m)/n of Pt atoms. We derive an analytical model that establishes the fundamental basis for this linearity and expresses its parameters - the m-dependent slope and intercept - in terms of characteristic properties of the constituent components, such as the average binding energy per atom of Mom and the average per-atom adsorption energy of the Pt atoms on Mom.
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Affiliation(s)
| | - Julius Jellinek
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, United States of America
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Chattopadhyay P, Paul G. Relativistic quantum heat engine from uncertainty relation standpoint. Sci Rep 2019; 9:16967. [PMID: 31740692 PMCID: PMC6861512 DOI: 10.1038/s41598-019-53331-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/31/2019] [Indexed: 12/02/2022] Open
Abstract
Established heat engines in quantum regime can be modeled with various quantum systems as working substances. For example, in the non-relativistic case, we can model the heat engine using infinite potential well as a working substance to evaluate the efficiency and work done of the engine. Here, we propose quantum heat engine with a relativistic particle confined in the one-dimensional potential well as working substance. The cycle comprises of two isothermal processes and two potential well processes of equal width, which forms the quantum counterpart of the known isochoric process in classical nature. For a concrete interpretation about the relation between the quantum observables with the physically measurable parameters (like the efficiency and work done), we develop a link between the thermodynamic variables and the uncertainty relation. We have used this model to explore the work extraction and the efficiency of the heat engine for a relativistic case from the standpoint of uncertainty relation, where the incompatible observables are the position and the momentum operators. We are able to determine the bounds (the upper and the lower bounds) of the efficiency of the heat engine through the thermal uncertainty relation.
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Affiliation(s)
- Pritam Chattopadhyay
- Cryptology and Security Research Unit, R.C. Bose Center for Cryptology and Security, Indian Statistical Institute, Kolkata, 700108, India.
| | - Goutam Paul
- Cryptology and Security Research Unit, R.C. Bose Center for Cryptology and Security, Indian Statistical Institute, Kolkata, 700108, India.
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Wang F, Liu W. Comparison of Different Polarization Schemes in Open-shell Relativistic Density Functional Calculations. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200300087] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Adsorption of a single Pt atom on polyaromatic hydrocarbons from first-principle calculations. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.04.077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Błoński P, Hafner J. Geometric and magnetic properties of Pt clusters supported on graphene: Relativistic density-functional calculations. J Chem Phys 2011; 134:154705. [DOI: 10.1063/1.3577517] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Błoński P, Dennler S, Hafner J. Strong spin–orbit effects in small Pt clusters: Geometric structure,
magnetic isomers and anisotropy. J Chem Phys 2011; 134:034107. [DOI: 10.1063/1.3530799] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Affiliation(s)
- Piotr Błoński
- Fakultät für Physik and Center for Computational
Materials Science, Universität Wien, Sensengasse
8/12, A-1090 Wien, Austria
| | - Samuel Dennler
- Laboratoire des Colloïdes, Verres et Nanomatériaux,
Université de Montpellier II, F-34095
Montpellier, France
| | - Jürgen Hafner
- Fakultät für Physik and Center for Computational
Materials Science, Universität Wien, Sensengasse
8/12, A-1090 Wien, Austria
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Belpassi L, Storchi L, Quiney HM, Tarantelli F. Recent advances and perspectives in four-component Dirac–Kohn–Sham calculations. Phys Chem Chem Phys 2011; 13:12368-94. [DOI: 10.1039/c1cp20569b] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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8
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Rabilloud F, Harb M, Ndome H, Archirel P. UV−Visible Absorption Spectra of Small Platinum Carbonyl Complexes and Particles: A Density Functional Theory Study. J Phys Chem A 2010; 114:6451-62. [DOI: 10.1021/jp912117q] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Franck Rabilloud
- Université de Lyon, F-69622 Lyon, France; Université Lyon 1, Villeurbanne; CNRS; UMR 5579, LASIM, and Université Paris-Sud 11 CNRS, UMR 8000, Laboratoire de Chimie Physique, F-91405 Orsay France
| | - Moussab Harb
- Université de Lyon, F-69622 Lyon, France; Université Lyon 1, Villeurbanne; CNRS; UMR 5579, LASIM, and Université Paris-Sud 11 CNRS, UMR 8000, Laboratoire de Chimie Physique, F-91405 Orsay France
| | - Hameth Ndome
- Université de Lyon, F-69622 Lyon, France; Université Lyon 1, Villeurbanne; CNRS; UMR 5579, LASIM, and Université Paris-Sud 11 CNRS, UMR 8000, Laboratoire de Chimie Physique, F-91405 Orsay France
| | - Pierre Archirel
- Université de Lyon, F-69622 Lyon, France; Université Lyon 1, Villeurbanne; CNRS; UMR 5579, LASIM, and Université Paris-Sud 11 CNRS, UMR 8000, Laboratoire de Chimie Physique, F-91405 Orsay France
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Ončák M, Cao Y, Höckendorf R, Beyer M, Zahradník R, Schwarz H. Thermal NH Bond Activation on Anionic and Cationic Platinum Clusters: Non-Predetermined Reaction Pathways Indicate Transitions to a Bulk Surface Reactivity. Chemistry 2009; 15:8465-8474. [DOI: 10.1002/chem.200900677] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Spohn B, Goll E, Stoll H, Figgen D, Peterson KA. Energy-Consistent Pseudopotentials for the 5d Elements—Benchmark Calculations for Oxides, Nitrides, and Pt2. J Phys Chem A 2009; 113:12478-84. [DOI: 10.1021/jp903543f] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Benjamin Spohn
- Institut für Theoretische Chemie, Universität Stuttgart, D-70550 Stuttgart, Germany
| | - Erich Goll
- Institut für Theoretische Chemie, Universität Stuttgart, D-70550 Stuttgart, Germany
| | - Hermann Stoll
- Institut für Theoretische Chemie, Universität Stuttgart, D-70550 Stuttgart, Germany
| | - Detlev Figgen
- Centre for Theoretical Chemistry and Physics, New Zealand Institute for Advanced Study, Massey University Albany, Auckland 0745, New Zealand
| | - Kirk A. Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630
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Franzreb K, Diez RP, Alonso JA. Observation of Zr22+, Cd22+, Hf22+, W22+, and Pt22+ in the gas phase. J Chem Phys 2009; 130:144312. [DOI: 10.1063/1.3112013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Bast R, Heßelmann A, Sałek P, Helgaker T, Saue T. Static and Frequency-Dependent Dipole–Dipole Polarizabilities of All Closed-Shell Atoms up to Radium: A Four-Component Relativistic DFT Study. Chemphyschem 2008; 9:445-53. [DOI: 10.1002/cphc.200700504] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Gas-phase reactivities of charged platinum dimers with ammonia: A combined experimental/theoretical study. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2007.11.059] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Xu Y, Shelton WA, Schneider WF. Effect of particle size on the oxidizability of platinum clusters. J Phys Chem A 2007; 110:5839-46. [PMID: 16640379 DOI: 10.1021/jp0547111] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The catalytic properties of transition metal particles often depend crucially on their chemical environment, but so far, little is known about how the effects of the environment vary with particle size, especially for clusters consisting of only a few atoms. To gain insight into this topic, we have studied the oxygen affinity of free Pt(x) clusters as a function of cluster size (x = 1, 2, 3, 4, 5, and 10) using density functional theory (DFT) calculations (GGA-PW91). DFT-based Nosé-Hoover molecular dynamics has been used to explore the configuration space of the Pt(x)O(x) and Pt(x)O(2x) clusters, leading to the discovery of several novel Pt-oxide structures. The formation of small Pt-oxide clusters by oxidizing the corresponding Pt(x) clusters is found to be significantly more exothermic than the formation of bulk Pt-oxides from Pt metal. The exothermicity generally increases as cluster size decreases but exhibits strongly nonlinear dependence on the cluster size. The nanoclusters are also structurally distinct from the bulk oxides and prefer one- and two-dimensional chain and ringlike shapes. These findings help elucidate the oxidation behavior of Pt nanoclusters and lay the foundation for understanding the reactivity of Pt nanoclusters in oxidizing chemical environments.
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Affiliation(s)
- Ye Xu
- Computer Science and Mathematics Division, Oak Ridge National Laboratory, Tennessee 37831, USA
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Ren CY. Gradient-corrected density-functional potential with correct asymptotic behavior: Application to interconfigurational energies in transition-metal atoms. J Chem Phys 2005; 122:244109. [PMID: 16035748 DOI: 10.1063/1.1938188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Based upon the optimized effective potential with the self-interaction correction, we present in this paper an alternative gradient-corrected density-functional approximation with the proper long-range behavior of the effective potential. As applied to the study of the interconfigurational energies of the whole transition-metal atoms, the present combination of the gradient-corrected contribution and the modified optimized effective potential lead the s ionization to the excellent agreement with the experiment. The calculated d ionizations and s-d transition energies are also discussed.
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Affiliation(s)
- Chung-Yuan Ren
- Department of Science Education, Taipei Municipal Teachers College, Taiwan, Republic of China.
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Chen J, Chan KY. Size-dependent mobility of platinum cluster on a graphite surface. MOLECULAR SIMULATION 2005. [DOI: 10.1080/08927020500134292] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Anton J, Ishii T, Fricke B. An ab initio study of the magnetic ground states of organic molecules of di-resp. tetramethyl types as examples with a non-collinear density functional method. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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van Wüllen C. Relativistic Density Functional Calculations on Small Molecules. THEORETICAL AND COMPUTATIONAL CHEMISTRY 2004. [DOI: 10.1016/s1380-7323(04)80037-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Anton J, Hirata M, Fricke B, Pershina V. Improved density functional calculations including magnetic effects for RfCl4 and its homologues. Chem Phys Lett 2003. [DOI: 10.1016/j.cplett.2003.09.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Grönbeck H, Broqvist P. Pt and Pt2 on MgO(100) and BaO(100): structure, bonding, and chemical properties. J Chem Phys 2003. [DOI: 10.1063/1.1591736] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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