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Felix JC, da Silva GR, Nagurniak GR, C Dias A, P Orenha R, Rêgo CRC, Parreira RLT, Guedes-Sobrinho D, Piotrowski MJ. Investigating Molecular Adsorption on Graphene-Supported Platinum Subnanoclusters: Insights from DFT + D3 Calculations. ACS OMEGA 2024; 9:41067-41083. [PMID: 39372006 PMCID: PMC11447868 DOI: 10.1021/acsomega.4c07017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 09/05/2024] [Accepted: 09/11/2024] [Indexed: 10/08/2024]
Abstract
Platinum (Pt) subnanoclusters have become pivotal in nanocatalysis, yet their molecular adsorption mechanisms, particularly on supported versus unsupported systems, remain poorly understood. Our study employs detailed density functional theory (DFT) calculations with D3 corrections to investigate molecular adsorption on Pt subnanoclusters, focusing on CO, NO, N2, and O2 species. Gas-phase and graphene-supported scenarios are systematically characterized to elucidate adsorption mechanisms and catalytic potential. Gas-phase Pt n clusters are first analyzed to identify stable configurations and assess size-dependent reactivity. Transitioning to graphene-supported Pt n clusters, both periodic and nonperiodic models are employed to study interactions with graphene substrates. Strong adsorbate interactions predominantly occur at single top sites, revealing distinct adsorption geometries and stabilization effects for specific molecules on Pt6 clusters. Energy decomposition analysis highlights the paramount role of graphene substrates in enhancing stability and modulating cluster-adsorbate interactions. The interaction energy emerges as a critical criterion within the Sabatier principle, crucial for distinguishing between physisorption and chemisorption. Hybridization indices and charge density flow tendencies establish direct relationships with stabilization processes, underscoring graphene's influence in stabilizing highly reactive subnanoclusters. This comprehensive investigation provides critical insights into molecular adsorption mechanisms and the catalytic potential of graphene-supported Pt nanoclusters. Our findings contribute to a deeper understanding of nanocatalysis, emphasizing the essential role of substrates in optimizing catalytic performance for industrial applications.
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Affiliation(s)
- João
Paulo Cerqueira Felix
- Institute
of Physics “Armando Dias Tavares”, Rio de Janeiro State University, 20550-900 Rio de Janeiro, RJ, Brazil
| | | | - Glaucio R. Nagurniak
- Department
of Exact Sciences and Education, Federal
University of Santa Catarina, 89036-004 Blumenau, SC, Brazil
| | - Alexandre C Dias
- Institute
of Physics and International Center of Physics, University of Brasília, 70919-970 Brasília, DF, Brazil
| | - Renato P Orenha
- Núcleo
de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600 Franca, SP, Brazil
| | - Celso R. C. Rêgo
- Institute
of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Renato L. T. Parreira
- Núcleo
de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600 Franca, SP, Brazil
| | | | - Maurício J. Piotrowski
- Department
of Physics, Federal University of Pelotas, PO Box 354, 96010-900 Pelotas, RS, Brazil
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2
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Felix JPCS, Batista KEA, Morais WO, Nagurniak GR, Orenha RP, Rêgo CRC, Guedes-Sobrinho D, Parreira RLT, Ferrer MM, Piotrowski MJ. Molecular adsorption on coinage metal subnanoclusters: A DFT+D3 investigation. J Comput Chem 2023; 44:1040-1051. [PMID: 36576316 DOI: 10.1002/jcc.27063] [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: 10/01/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/29/2022]
Abstract
Gold and silver subnanoclusters with few atoms are prominent candidates for catalysis-related applications, primarily because of the large fraction of lower-coordinated atoms exposed and ready to interact with external chemical species. However, an in-depth energetic analysis is necessary to characterize the relevant terms within the molecular adsorption process that can frame the interactions within the Sabatier principle. Herein, we investigate the interaction between Agn and Aun subnanoclusters (clu, n = 2-7) and N2 , NO, CO, and O2 molecules, using scalar-relativistic density functional theory calculations within van der Waals D3 corrections. The onefold top site is preferred for all chemisorption cases, with a predominance of linear (≈180°) and bent (≈120°) molecular geometries. A larger magnitude of adsorption energy is correlated with smaller distances between molecules and clusters and with the weakening of the adsorbates bond strength represented by the increase of the equilibrium distances and decrease of molecular stretching frequencies. From the energetic decomposition, the interaction energy term was established as an excellent descriptor to classify subnanoclusters in the adsorption/desorption process concomitant with the Sabatier principle. The limiting cases: (i) weak molecular adsorption on the subnanoclusters, which may compromise the reaction activation, where an interaction energy magnitude close to 0 eV is observed (e.g., physisorption in N2 /Ag6 ); and (ii) strong molecular interactions with the subnanoclusters, given the interaction energy magnitude is larger than at least one of the individual fragment binding energies (e.g., strong chemisorption in CO/Au4 and NO/Au4 ), conferring a decrease in the desorption rate and an increase in the possible poisoning rate. However, the intermediate cases are promising by involving interaction energy magnitudes between zero and fragment binding energies. Following the molecular closed-shell (open-shell) electronic configuration, we find a predominant electrostatic (covalent) nature of the physical interactions for N2 ⋯clu and CO ⋯clu (O2 ⋯clu and NO⋯clu), except in the physisorption case (N2 /Ag6 ) where dispersive interaction is dominant. Our results clarify questions about the molecular adsorption on subnanoclusters as a relevant mechanistic step present in nanocatalytic reactions.
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Affiliation(s)
- João P C S Felix
- Department of Physics, Federal University of Pelotas, Pelotas, Brazil
| | - Krys E A Batista
- Coordenadoria Regional de Ensino, Secretaria de Estado de Educação e Desporto, Tefé, Brazil
| | - Wesley O Morais
- Department of Physics, Federal University of Pelotas, Pelotas, Brazil
| | - Glaucio R Nagurniak
- Department of Chemistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Renato P Orenha
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, Florianópolis, Brazil.,Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, Brazil
| | - Celso R C Rêgo
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | | | - Renato L T Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, Brazil
| | - Mateus M Ferrer
- Center of Technological Development, Federal University of Pelotas, Pelotas, Brazil
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3
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Gedam SP, Chiriki S, Padmavathi D. Advanced machine learning based global optimizations for Pt nanoclusters. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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4
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Galindo-Uribe CD, Calaminici P, Solorza-Feria O. First-principle investigation of structures and energy properties of $$({\textbf {Pt}}_{3}{} {\textbf {Cu}})_{{\varvec{n}}}$$, n = 10–11 nanoclusters. Theor Chem Acc 2023. [DOI: 10.1007/s00214-023-02963-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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5
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de Mendonça JPA, Calderan FV, Lourenço TC, Quiles MG, Da Silva JLF. Theoretical Framework Based on Molecular Dynamics and Data Mining Analyses for the Study of Potential Energy Surfaces of Finite-Size Particles. J Chem Inf Model 2022; 62:5503-5512. [DOI: 10.1021/acs.jcim.2c00957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- João Paulo A. de Mendonça
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, São Paulo, Brazil
| | - Felipe V. Calderan
- Institute of Science and Technology, Federal University of São Paulo, 01016 020 São José dos Campos, São Paulo, Brazil
| | - Tuanan C. Lourenço
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, São Paulo, Brazil
| | - Marcos G. Quiles
- Institute of Science and Technology, Federal University of São Paulo, 01016 020 São José dos Campos, São Paulo, Brazil
| | - Juarez L. F. Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, São Paulo, Brazil
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Wan X, Zhang Z, Yu W, Niu H, Wang X, Guo Y. Machine-learning-assisted discovery of highly efficient high-entropy alloy catalysts for the oxygen reduction reaction. PATTERNS 2022; 3:100553. [PMID: 36124306 PMCID: PMC9481945 DOI: 10.1016/j.patter.2022.100553] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/16/2022] [Accepted: 06/23/2022] [Indexed: 11/01/2022]
Abstract
High-entropy alloys (HEAs) have recently been applied in the field of heterogeneous catalysis benefiting from vast chemical space. However, huge chemical space also brings extreme challenges for the comprehensive study of HEAs by traditional trial-and-error experiments. Therefore, the machine learning (ML) method is presented to investigate the oxygen reduction reaction (ORR) catalytic activity of millions of reactive sites on HEA surfaces. The well-performed ML model is constructed based on the gradient boosting regression (GBR) algorithm with high accuracy, generalizability, and simplicity. In-depth analysis of the results demonstrates that adsorption energy is a mixture of the individual contributions of coordinated metal atoms near the reactive site. An efficient strategy is proposed to further boost the ORR catalytic activity of promising HEA catalysts by optimizing the HEA surface structure, which recommends a highly efficient HEA catalyst of Ir48Pt74Ru30Rh30Ag74. Our work offers a guide to the rational design and nanostructure synthesis of HEA catalysts. The catalytic activity of six types of high-entropy alloys was studied theoretically Machine learning shows great potential to tackle the huge chemical space of HEAs The well-trained model can accurately predict catalytic performance of HEAs A strategy to improve catalytic activity by tuning HEA compositions was proposed
Benefiting from huge chemical space, high-entropy alloys (HEAs) show great potential as heterogeneous catalysts for different reactions. However, vast chemical space makes it extremely difficult to comprehensively study HEAs by traditional trial-and-error experiments. Therefore, a machine-learning-assisted theoretical method is proposed to investigate the oxygen reduction reaction (ORR) catalytic activity of millions of reactive sites on HEA surfaces. The well-performed gradient boosting regression (GBR) model with high accuracy, generalizability, and simplicity is constructed by reasonable data extraction and feature engineering, which can accurately predict the catalytic activities of millions of reactive sites on HEA surfaces. Finally, one strategy to engineer the HEA surface structure by tuning the metal element component ratio is proposed, which doubles the amount of high-activity sites.
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7
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Piotrowski MJ, Orenha RP, Parreira RLT, Guedes-Sobrinho D. Assessment of the van der Waals, Hubbard U parameter and spin-orbit coupling corrections on the 2D/3D structures from metal gold congeners clusters. J Comput Chem 2021; 43:230-243. [PMID: 34751955 DOI: 10.1002/jcc.26784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/17/2021] [Accepted: 10/25/2021] [Indexed: 11/07/2022]
Abstract
The coinage-metal clusters possess a natural complexity in their theoretical treatment that may be accompanied by inherent shortcomings in the methodological approach. Herein, we performed a scalar-relativistic density functional theory study, considering Perdew, Burke, and Ernzerhof (PBE) with (empirical and semi empirical) van der Waals (vdW), spin-orbit coupling (SOC), +U (Hubbard term), and their combinations, to treat the Cu 13 , Ag 13 , and Au 13 clusters in different structural motifs. The energetic scenario is given by the confirmation of the 3D lowest energy configurations for Cu 13 and Ag 13 within all approaches, while for Au 13 there is a 2D/3D competition, depending on the applied correction. The 2D geometry is 0.43 eV more stable with plain PBE than the 3D one, the SOC, +U, and/or vdW inclusion decreases the overestimated stability of the planar configurations, where the most surprising result is found by the D3 and D3BJ vdW corrections, for which the 3D configuration is 0.29 and 0.11 eV, respectively, more stable than the 2D geometry (with even higher values when SOC and/or +U are added). The D3 dispersion correction represents 7.9% (4.4%) of the total binding energy for the 3D (2D) configuration, (not) being enough to change the sd hybridization and the position of the occupied d -states. Our predictions are in agreement with experimental results and in line with the best results obtained for bulk systems, as well as with hybrid functionals within D3 corrections. The properties description undergoes small corrections with the different approaches, where general trends are maintained, that is, the average bond length is smaller (larger) for lower (higher)-coordinated structures, since a same number of electrons are shared by a smaller (larger) number of bonds, consequently, the bonds are stronger (weaker) and shorter (longer) and the sd hybridization index is larger (smaller). Thus, Au has a distinct behavior in relation to its lighter congeners, with a complex potential energy surface, where in addition to the relevant relativistic effects, correlation and dispersion effects must also be considered.
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Affiliation(s)
- Maurício J Piotrowski
- Department of Physics, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Renato P Orenha
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, São Paulo, Brazil
| | - Renato L T Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, São Paulo, Brazil
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8
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Baraiya BA, Tanna H, Mankad V, Jha PK. Dressing of Cu Atom over Nickel Cluster Stimulating the Poisoning-Free CO Oxidation: An Ab Initio Study. J Phys Chem A 2021; 125:5256-5272. [PMID: 34115503 DOI: 10.1021/acs.jpca.1c02354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In this work using first-principles calculations based on spin-polarized density functional theory (DFT), the role of the Cu atom in degrading the poisoning of carbon monoxide (CO) over NinCu clusters is unveiled. The search has been initiated with the examination of structural, magnetic, and electronic properties of Nin+1 and NinCu clusters (1 ≤ n ≤ 12). X-ray absorption near-edge structure (XANES) spectra of Ni K-edge are computed to extract the information on the oxidation states and coordination environment of metal sites of the clusters. This study is operated with the two forms of dispersion corrections, i.e., D2 and D3, with standard DFT (with LDA and GGA functionals) for the consideration of van der Waals interactions during CO adsorption. The PBE and PBE-D3 approaches are found to be capable of yielding the experimentally observed preferential site for CO adsorption. The effect of spin-polarization on the reactivity of transition metals (TMs) toward CO adsorption is crucially assessed by the electronic reactivity descriptors such as d-band center, d-band width, and fractional filling of d-band using a spin-polarized d-band center model. The effective charge transfer from Cu to Ni atoms makes Ni atoms more efficient of charge and is attributed to the degrading adsorption of CO over NinCu clusters. The Ni12Cu cluster stands out with good CO oxidation activity for the Langmuir-Hinshelwood (L-H) reaction pathway.
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Affiliation(s)
- Bhumi A Baraiya
- Department of Physics, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390002, Gujarat, India
| | - Hemang Tanna
- Department of Physics, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390002, Gujarat, India
| | - Venu Mankad
- Department of Physics, School of Sciences, GITAM University, Hyderabad Campus, Hyderabad 502329, Telangana, India
| | - Prafulla K Jha
- Department of Physics, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390002, Gujarat, India
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9
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Yonezawa AF, Nagurniak GR, Orenha RP, Silva EHD, Parreira RLT, Piotrowski MJ. Stability Changes in Iridium Nanoclusters via Monoxide Adsorption: A DFT Study within the van der Waals Corrections. J Phys Chem A 2021; 125:4805-4818. [PMID: 34048257 DOI: 10.1021/acs.jpca.1c02694] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Small iridium nanoclusters are prominent subnanometric systems for catalysis-related applications, mainly because of a large surface-to-volume ratio, noncoalescence feature, and tunable properties, which are completely influenced by the number of atoms, geometry, and molecular interaction with the chemical environment. Herein, we investigate the interaction between Irn nanoclusters (n = 2-7) and polluting molecules, CO, NO, and SO, using van der Waals D3 corrected density functional theory calculations. Starting from a representative structural set, we determine the growth pattern of the lowest energy unprotected Irn nanoclusters, which is based on open structural motifs, and from the adsorption of a XO (X = C, N, and S) molecule, the preferred high-symmetric adsorption sites were determined, dominated by the onefold top site. For protected systems, 4XO/Ir4 and 6XO/Ir6, we found a reduction in the total magnetic moment, while the equilibrium bonds of the nanoclusters expanded (contracted) due to mCO and mNO (mSO) adsorption, with exceptions for systems with large structural distortions (4SO/Ir4 and 6NO/Ir6). Meanwhile, the C-O and N-O (S-O) bond strength decreases (increases) following an increase (decrease) in the C-O and N-O (S-O) distances upon adsorption. We show, through energetic analysis, that for the different chemical environments, relative stability changes occur from the most stable unprotected nanoclusters, planar square (Ir4), and prism (Ir6) to higher energy isomers. The change in the stability order between the two competing protected systems is feasible if the balance between the interaction energy (additive term) and distortion energies (nonadditive terms) compensates for the relative total energies of the unprotected configurations. For all systems, the interaction energy is the main reason responsible for stability alterations, except for 4SO/Ir4, where the main contribution is from a small penalty due to Ir4 distortions upon adsorption, and for 4NO/Ir4, where the energetic effects from the adsorption do not overcome the difference between the binding energies of the unprotected nanoclusters. Finally, from energy decomposition and Hirshfeld charge analysis, we find a predominant covalent nature of the physical contributions in mOX···Irn interactions with a cationic core (Irn) and an anionic shell (XO coverage).
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Affiliation(s)
- Alex F Yonezawa
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900 Pelotas, RS, Brazil
| | - Glaucio R Nagurniak
- Department of Exact Sciences and Education, Federal University of Santa Catarina, 89036-004 Blumenau, SC, Brazil
| | - Renato P Orenha
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600 Franca, SP, Brazil
| | - Eder H da Silva
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600 Franca, SP, Brazil
| | - Renato L T Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600 Franca, SP, Brazil
| | - Maurício J Piotrowski
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900 Pelotas, RS, Brazil
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Batista KEA, Soares MD, Quiles MG, Piotrowski MJ, Da Silva JLF. Energy Decomposition to Access the Stability Changes Induced by CO Adsorption on Transition-Metal 13-Atom Clusters. J Chem Inf Model 2021; 61:2294-2301. [PMID: 33939914 DOI: 10.1021/acs.jcim.1c00097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Our atomistic understanding of the physical-chemical parameters that drives the changes in the relative stability of clusters induced by adsorbed molecules is far from satisfactory. In this work, we employed density functional theory calculations to address this problem using CO adsorption on 13-atom transition-metal clusters, TM13, namely, nCO/TM13, where TM = Ru, Rh, Pd, and Ag, and n = 1-6. Unexpectedly, changes in the relative stability take place for all systems at a lower coverage, namely, at n = 3 (Ru13), 4 (Rh13, Ag13), and 2 (Pd13). To address the effects that lead to changes in the stability, we proposed an energy decomposition scheme for the binding energy of the nCO/TM13 systems, which yields that the change in relative stability is dominated by the interaction energy and cluster distortion energy upon adsorption, where the interaction energy is higher for high-energy unprotected clusters. Furthermore, we characterized all adsorption parameters, which helps us to complement our atomistic understanding.
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Affiliation(s)
- Krys E A Batista
- Department of Physics, Federal University of Pelotas, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Marinalva D Soares
- Department of Science and Technology, Federal University of São Paulo, 12231-280 São José dos Campos, SP, Brazil
| | - Marcos G Quiles
- Department of Science and Technology, Federal University of São Paulo, 12231-280 São José dos Campos, SP, Brazil
| | - Maurício J Piotrowski
- Department of Physics, Federal University of Pelotas, P.O. Box 354, 96010-900 Pelotas, RS, Brazil
| | - Juarez L F Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, SP, Brazil
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Galindo-Uribe CD, Calaminici P, Cruz-Martínez H, Cruz-Olvera D, Solorza-Feria O. First-principle study of the structures, growth pattern, and properties of (Pt 3Cu) n, n = 1-9, clusters. J Chem Phys 2021; 154:154302. [PMID: 33887945 DOI: 10.1063/5.0045203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In this work, a first-principles systematic study of (Pt3Cu)n, n = 1-9, clusters was performed employing the linear combination of Gaussian-type orbital auxiliary density functional theory approach. The growth of the clusters has been achieved by increasing the previous cluster by one Pt3Cu unit at a time. To explore in detail the potential energy surface of these clusters, initial structures were obtained from Born-Oppenheimer molecular dynamics trajectories generated at different temperatures and spin multiplicities. For each cluster size, several dozens of structures were optimized without any constraints. The most stable structures were characterized by frequency analysis calculations. This study demonstrates that the obtained most stable structures prefer low spin multiplicities. To gain insight into the growing pattern of these systems, average bond lengths were calculated for the lowest stable structures. This work reveals that the Cu atoms prefer to be together and to localize inside the cluster structures. Moreover, these systems tend to form octahedra moieties in the size range of n going from 4 to 9 Pt3Cu units. Magnetic moment per atom and spin density plots were obtained for the neutral, cationic, and anionic ground state structures. Dissociation energies, ionization potential, and electron affinity were calculated, too. The dissociation energy and the electron affinity increase as the number of Pt3Cu units grows, whereas the ionization potential decreases.
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Affiliation(s)
- Carlos Daniel Galindo-Uribe
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Gustavo A. Madero, CP 07360 Mexico City, Mexico
| | - Patrizia Calaminici
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Gustavo A. Madero, CP 07360 Mexico City, Mexico
| | - Heriberto Cruz-Martínez
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Gustavo A. Madero, CP 07360 Mexico City, Mexico
| | - Domingo Cruz-Olvera
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Gustavo A. Madero, CP 07360 Mexico City, Mexico
| | - Omar Solorza-Feria
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, Gustavo A. Madero, CP 07360 Mexico City, Mexico
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12
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Felício-Sousa P, Andriani KF, Da Silva JLF. Ab initio investigation of the role of the d-states occupation on the adsorption properties of H 2, CO, CH 4 and CH 3OH on the Fe 13, Co 13, Ni 13 and Cu 13 clusters. Phys Chem Chem Phys 2021; 23:8739-8751. [PMID: 33876033 DOI: 10.1039/d0cp06091g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here, we report a theoretical investigation, based on density functional theory calculations, into the role of the occupation d-states on the adsorption properties of CH4, CO, H2 and CH3OH on 3d 13-atom transition-metal (TM13) clusters (TM = Fe, Co, Ni, Cu). Except for Cu13, a gradual increase in the occupation of the d-states, i.e., from Fe13 to Ni13, increases the magnitude of the adsorption energy almost linearly for the H2/TM13 and CO/TM13 systems, which can be explained by the enhancement of the sp-d hybridization due to the shift of the d-states towards the highest occupied molecular orbital (HOMO). For Cu13, the d-states are located well below the HOMO, which reduces the sp-d hybridization, and hence, a smaller adsorption energy is obtained. However, this picture does not hold for CH4/TM13 and CH3OH/TM13, where the adsorption energy has nearly the same value for all TM13 clusters, which can be explained by electrostatic effects such as local polarization of the molecules and nearby TM atoms, and hence, the basic features of physisorption systems. Based on the electron density difference, the polarization effects are slightly larger for systems with empty d-states.
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Affiliation(s)
- Priscilla Felício-Sousa
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
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13
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Mendes PCD, Verga LG, Da Silva JLF. Ab initio screening of Pt-based transition-metal nanoalloys using descriptors derived from the adsorption and activation of CO 2. Phys Chem Chem Phys 2021; 23:6029-6041. [PMID: 33683269 DOI: 10.1039/d1cp00570g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, we report an ab initio screening, based on density functional theory calculations, of Pt-based transition-metal nanoalloys using physicochemical descriptors derived from the adsorption and activation of CO2 on 55-atom nanoclusters, namely, PtnTM55-n, with n = 0, 13, 42, 55, TM = Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Os, Ir, Au. From the adsorption on the unary and binary nanoclusters, at the chemisorption regime (bent CO2), we identified a linear correlation between the interaction energy and charge transfer from the nanoclusters towards CO2 and the bent CO2 angle; moreover, the interaction energy is enhanced for larger values of the molecular charge and angle. The alloying of Cu55, Ag55, and Au55 with Pt provides a path to change the CO2 adsorption from physisorption (linear, non-activated) to chemisorption (enhanced interaction energies, bent, activated), while the strong interaction energy of CO2 with Os55, Ru55, and Fe55 can be decreased by alloying with Pt using different structural configurations, i.e., the trends are similar for core-shell and segregated structures. Thus, based on our results and analyses, we can select different combinations of PtnTM55-n nanoalloys to yield the desired interaction strength and magnitude of the charge transfer towards the activated anionic CO2, which can help in the design of nanocatalysts for CO2 activation or different chemical reactions in which charge transfer plays a crucial role.
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Affiliation(s)
- Paulo C D Mendes
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
| | - Lucas G Verga
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
| | - Juarez L F Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
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14
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Mucelini J, Quiles MG, Prati RC, Da Silva JLF. Correlation-Based Framework for Extraction of Insights from Quantum Chemistry Databases: Applications for Nanoclusters. J Chem Inf Model 2021; 61:1125-1135. [PMID: 33685128 DOI: 10.1021/acs.jcim.0c01267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The amount of quantum chemistry (QC) data is increasing year by year due to the continuous increase of computational power and development of new algorithms. However, in most cases, our atom-level knowledge of molecular systems has been obtained by manual data analyses based on selected descriptors. In this work, we introduce a data mining framework to accelerate the extraction of insights from QC datasets, which starts with a featurization process that converts atomic features into molecular properties (AtoMF). Then, it employs correlation coefficients (Pearson, Spearman, and Kendall) to investigate the AtoMF features relationship with a target property. We applied our framework to investigate three nanocluster systems, namely, PtnTM55-n, CenZr15-nO30, and (CHn + mH)/TM13. We found several interesting and consistent insights using Spearman and Kendall correlation coefficients, indicating that they are suitable for our approach; however, our results indicate that the Pearson coefficient is very sensitive to outliers and should not be used. Moreover, we highlight problems that can occur during this analysis and discuss how to handle them. Finally, we make available a new Python package that implements the proposed QC data mining framework, which can be used as is or modified to include new features.
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Affiliation(s)
- Johnatan Mucelini
- São Carlos Institute of Chemistry, University of São Paulo, P. O. Box 780, 13560-970 São Carlos, SP, Brazil
| | - Marcos G Quiles
- Department of Science and Technology, Federal University of São Paulo, 12247-014 São Jose dos Campos, SP, Brazil
| | - Ronaldo C Prati
- Center for Mathematics, Computation and Cognition, Federal University of ABC, 09210-580 Santo André, SP, Brazil
| | - Juarez L F Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, P. O. Box 780, 13560-970 São Carlos, SP, Brazil
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15
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Mendes PCD, Ocampo-Restrepo VK, Da Silva JLF. Ab initio investigation of quantum size effects on the adsorption of CO 2, CO, H 2O, and H 2 on transition-metal particles. Phys Chem Chem Phys 2020; 22:8998-9008. [PMID: 32293626 DOI: 10.1039/d0cp00880j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adsorption is a crucial preliminary step for the conversion of CO2 into higher-value chemicals, nonetheless, the atomistic understanding of how substrate particle size affects this step is still incomplete. In this study, we employed density functional theory to investigate the effects of particle size on the adsorption of model molecules involved in the CO2 transformations (CO2, CO, H2O and H2) on Con, Nin and Cun particles with different sizes (n = 13, 55, 147) and on the respective close-packed surfaces. We found significant size-dependence of the adsorption properties for physisorbed (linear) and chemisorbed (bent) CO2 on the substrates and distinct (symmetric or asymmetric) stretching of the C-O bonds, which can play a crucial role to understand the CO2 dissociation pathways. For CO and H2, some properties showed small oscillations, due to size effects that induced alternation of the adsorption site preference for different particle sizes; for H2O, the adsorption properties were almost independent of particle size. The presence of low-coordinated adsorption sites resulted in a trend for stronger adsorption and greater charge transfer for smaller clusters. Fixing the size-independent factors (e.g., type of metal), our results show that CO2 adsorption on transition-metal clusters is significantly affected by particle size, suggesting that substrate particle size could be a key factor to understand and control the catalytic transformations of CO2.
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Affiliation(s)
- Paulo C D Mendes
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
| | - Vivianne K Ocampo-Restrepo
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
| | - Juarez L F Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970, São Carlos, São Paulo, Brazil.
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16
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de Amorim RV, Batista KEA, Nagurniak GR, Orenha RP, Parreira RLT, Piotrowski MJ. CO, NO, and SO adsorption on Ni nanoclusters: a DFT investigation. Dalton Trans 2020; 49:6407-6417. [PMID: 32352455 DOI: 10.1039/d0dt00288g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nickel nanoclusters are very promising for catalysis-related applications, especially involving chemical reactions with polluting molecules, such as carbon, nitrogen, and sulfur monoxides, which are directly or indirectly involved in serious environmental pollution problems. Therefore, it is of utmost importance to improve the understanding of the interaction between Ni nanoclusters and diatomic molecules, such as CO, NO, and SO, to provide insights into real subnano catalysts. Thus, here, we report an ab initio investigation based on density functional theory calculations within van der Waals D3 corrections to investigate the adsorption properties of CO, NO, and SO on Ni nanoclusters. From energetic and electronic criteria applied to Nin nanoclusters (n = 2-15), we selected Ni6 (octahedron) and Ni10 (triangular pyramid) nanoclusters as supports. According to our analyses, the molecular adsorption increases the stability of Ni nanoclusters, especially for Ni6 systems. The interaction intensity is larger for SO than for NO and CO in adsorbed systems, and the strong OS-Ni interaction is responsible for the well-known sulfur poisoning on transition-metal systems. The lowest energy adsorption sites are onefold for CO/Ni6, NO/Ni6, and CO/Ni10; twofold for NO/Ni10; and threefold for SO/Ni6 and CO/Ni10, where CO and NO molecules sustain linear and perpendicular geometries, while SO geometry changes to a bent configuration resulting from a sideways adsorption. The equilibrium bond lengths of the molecules expand upon adsorption, from 0.9% (NO/Ni6/10) to 11.3% (SO/Ni6/10), consequently, the internal molecular bond strengths decrease, since there is a reduction in the molecular stretching frequencies. This result occurs most strongly for SO followed by NO and CO systems, which was confirmed by an estimation of the energetic contribution of the distortion after the adsorption process. Thus, the strong S-Ni interaction, given by SO chemisorption on hollow sites with a sideways interaction, implies an energetic decrease and, consequently, a part of the energy gained from the SO-Ni interaction is from the SO and nanocluster distortions. Ultimately, using the energy decomposition analysis (from SAPT0) for XO/Ni6 systems, we improved the understanding of the CO and NO (SO) singlet (doublet) spin multiplicities' interaction with Ni6 nanoclusters.
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Affiliation(s)
- Rairisson V de Amorim
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900, Pelotas, RS, Brazil
| | - Krys E A Batista
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900, Pelotas, RS, Brazil
| | - Glaucio R Nagurniak
- Department of Exact Sciences and Education, Federal University of Santa Catarina, 89036-004, Blumenau, SC, Brazil
| | - Renato P Orenha
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Renato L T Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Maurício J Piotrowski
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900, Pelotas, RS, Brazil.
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17
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Fernández E, Liu L, Boronat M, Arenal R, Concepcion P, Corma A. Low-Temperature Catalytic NO Reduction with CO by Subnanometric Pt Clusters. ACS Catal 2019; 9:11530-11541. [PMID: 31840009 PMCID: PMC6902616 DOI: 10.1021/acscatal.9b03207] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/08/2019] [Indexed: 11/28/2022]
Abstract
![]()
The catalytic subnanometric metal clusters with a few
atoms can
be regarded as an intermediate state between single atoms and metal
nanoparticles (>1 nm). Their molecule-like electronic structures
and
flexible geometric structures bring rich chemistry and also a different
catalytic behavior, in comparison with the single-atom or nanoparticulate
counterparts. In this work, by combination of operando IR spectroscopy
techniques and electronic structure calculations, we will show a comparative
study on Pt catalysts for CO + NO reaction at a very low temperature
range (140–200 K). It has been found that single Pt atoms immobilized
on MCM-22 zeolite are not stable under reaction conditions and agglomerate
into Pt nanoclusters and particles, which are the working active sites
for CO + NO reaction. In the case of the catalyst containing Pt nanoparticles
(∼2 nm), the oxidation of CO to CO2 occurs in a
much lower extension, and Pt nanoparticles become poisoned under reaction
conditions because of a strong interaction with CO and NO. Therefore,
only subnanometric Pt clusters allow NO dissociation at a low temperature
and CO oxidation to occur well on the surface, while CO interaction
is weak enough to avoid catalyst poisoning, resulting in a good balance
to achieve enhanced catalytic performance.
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Affiliation(s)
- Estefanía Fernández
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Lichen Liu
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Mercedes Boronat
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Raul Arenal
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragon, Universidad de Zaragoza, Mariano Esquillor Edificio I + D, 50018 Zaragoza, Spain
- ARAID Foundation, 50018 Zaragoza, Spain
- Instituto de Ciencias de Materiales de Aragon, CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Patricia Concepcion
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
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19
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On the way of understanding the behavior of nanometer-scale metallic particles toward the adsorption of CO and NO molecules. CR CHIM 2018. [DOI: 10.1016/j.crci.2017.07.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Al-Odail F, Mazher J, Abuelela AM. A density functional theory study of structural, electronic and magnetic properties of small PdnAg (n = 1–8) clusters. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.01.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Piotrowski MJ, Nagurniak GR, Silva EHD, Parreira RLT. Bareversusprotected tetrairidium clusters by density functional theory. Phys Chem Chem Phys 2018; 20:29480-29492. [DOI: 10.1039/c8cp05263h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The lowest energy configuration of the tetrairidium cluster is a square planar isomer in bare case, while the tetrahedral configuration is assumed in different chemical environments.
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Affiliation(s)
| | | | - Eder H. da Silva
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas
- Universidade de Franca
- Franca
- Brazil
| | - Renato L. T. Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas
- Universidade de Franca
- Franca
- Brazil
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22
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σ-Holes on Transition Metal Nanoclusters and Their Influence on the Local Lewis Acidity. CRYSTALS 2017. [DOI: 10.3390/cryst7070222] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Origin of high oxygen reduction reaction activity of Pt 12 and strategy to obtain better catalyst using sub-nanosized Pt-alloy clusters. Sci Rep 2017; 7:45381. [PMID: 28349985 PMCID: PMC5368974 DOI: 10.1038/srep45381] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 02/22/2017] [Indexed: 12/22/2022] Open
Abstract
In the present study, methods to enhance the oxygen reduction reaction (ORR) activity of sub-nanosized Pt clusters were investigated in a theoretical manner. Using ab initio molecular dynamics and Monte Carlo simulations based on density functional theory, we have succeeded in determining the origin of the superior ORR activity of Pt12 compared to that of Pt13. That is, it was clarified that the electronic structure of Pt12 fluctuates to a greater extent compared to that of Pt13, which leads to stronger resistance against catalyst poisoning by O/OH. Based on this conclusion, a set of sub-nanosized Pt-alloy clusters was also explored to find catalysts with better ORR activities and lower financial costs. It was suggested that Ga4Pt8, Ge4Pt8, and Sn4Pt8 would be good candidates for ORR catalysts.
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24
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Abstract
We report first principle calculations about the NO oxidation mechanism on Ptn/γ-Al2O3(110) with an aim to improve the understanding of the catalytic activity and the catalytic process.
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Affiliation(s)
- Hongwei Gao
- Key Laboratory of Plant Resources and Chemistry in Arid Regions
- Xinjiang Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Urumqi 830011
- China
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