1
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Álvarez-García A, Molina LM, Garzón IL. O 2 activation by subnanometer Re-Pt clusters supported on TiO 2(110): exploring adsorption sites. Phys Chem Chem Phys 2024; 26:15902-15915. [PMID: 38775219 DOI: 10.1039/d4cp01118j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Activation of O2 by subnanometer metal clusters is a fundamental step in the reactivity and oxidation processes of single-cluster catalysts. In this work, we examine the adsorption and dissociation of O2 on RenPtm (n + m = 5) clusters supported on rutile TiO2(110) using DFT calculations. The adhesion energies of RenPtm clusters on the support are high, indicating significant stability of the supported clusters. Furthermore, the bimetallic Re-Pt clusters attach to the surface through the Re atoms. The oxygen molecule was adsorbed on three sites of the supported systems: the metal cluster, the surface, and the interface. At the metal cluster site, the O2 molecule binds strongly to RenPtm clusters, especially on the Re-rich clusters. O2 activation occurs by charge transfer from the metal atoms to the molecule. The dissociation of O2 on the RenPtm clusters is an exothermic process with low barriers. As a result, sub-nanometer Re-Pt clusters can be susceptible to oxidation. Similar results are obtained at the metal-support interface, where both the surface and cluster transfer charge to O2. To surface sites, molecular oxygen is adsorbed onto the Ti5c atoms with moderate adsorption energies. The polarons, which are produced by the interaction between the metal cluster and the surface, participate in the activation of the molecule. However, dissociating O2 in these sites is challenging due to the endothermic nature of the process and the high energy barriers involved. Our findings provide novel insights into the reactivity of supported clusters, specifically regarding the O2 activation by Re-Pt clusters on rutile TiO2(110).
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Affiliation(s)
- Andrés Álvarez-García
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Ciudad de México 01000, Mexico.
| | - Luis M Molina
- Departamento de Física Teórica, Atómica y Optica, Universidad de Valladolid, E-47011 Valladolid, Spain
| | - Ignacio L Garzón
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Ciudad de México 01000, Mexico.
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2
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Zamora B, Nyulászi L, Höltzl T. CO 2 and H 2 Activation on Zinc-Doped Copper Clusters. Chemphyschem 2024; 25:e202300409. [PMID: 38057146 DOI: 10.1002/cphc.202300409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 10/25/2023] [Indexed: 12/08/2023]
Abstract
Here we systematically investigate the CO2 and H2 activation and dissociation on small Cun Zn0/+ (n=3-6) clusters using Density Functional Theory. We show that Cu6 Zn is a superatom, displaying an increased HOMO-LUMO gap and is inert towards CO2 or H2 activation or dissociation. While other neutral clusters weakly activate CO2 , the cationic clusters preferentially bind the CO2 in monodentate nonactivated way. Notably, Cu4 Zn allows for the dissociation of activated CO2 , whereas larger clusters destabilize all activated CO2 binding modes. Conversely, H2 dissociation is favored on all clusters examined, except for Cu6 Zn. Cu3 Zn+ and Cu4 Zn, favor the formation of formate through the H2 dissociation pathway rather than CO2 dissociation. These findings suggest the potential of these clusters as synthetic targets and underscore their significance in the realm of CO2 hydrogenation.
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Affiliation(s)
- Bárbara Zamora
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, 1111-, Budapest, Műegytem rkp 3, Hungary
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, 1111-, Budapest, Műegytem rkp 3, Hungary
- HUN-REN-BME Computation Driven Chemistry research group, 1111-, Budapest, Műegytem rkp. 3, Hungary
| | - Tibor Höltzl
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, 1111-, Budapest, Műegytem rkp 3, Hungary
- HUN-REN-BME Computation Driven Chemistry research group, 1111-, Budapest, Műegytem rkp. 3, Hungary
- Furukawa Electric Institute of Technology, Nanomaterials Science Group, 1158, Budapest, Késmárk utca 28/A, Hungary
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3
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Muthuperiyanayagam A, Nabi AG, Zhao Q, Di Tommaso D. Adsorption, activation, and conversion of carbon dioxide on small copper-tin nanoclusters. Phys Chem Chem Phys 2023; 25:13429-13441. [PMID: 37144396 DOI: 10.1039/d3cp00477e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Carbon dioxide (CO2) conversion to value-added chemicals is an attractive solution to reduce globally accelerating CO2 emissions. Among the non-precious and abundant metals tested so far, copper (Cu) is one of the best electrocatalysts to convert CO2 into more than thirty different hydrocarbons and alcohols. However, the selectivity for desired products is often too low. We present a computational investigation of the effects of nanostructuring, doping, and support on the activity and selectivity of Cu-Sn catalysts. Density functional theory calculations were conducted to explore the possibility of using small Cu-Sn clusters, Cu4-nSnn (n = 0-4), isolated or supported on graphene and γ-Al2O3, to activate CO2 and convert it to carbon monoxide (CO) and formic acid (HCOOH). First, a detailed analysis of the structure, stability, and electronic properties of Cu4-nSnn clusters and their ability to absorb and activate CO2 was considered. Then, the kinetics of the gas phase CO2 direct dissociation on Cu4-nSnn to generate CO was determined. Finally, the mechanism of electrocatalytic CO2 reduction to CO and HCOOH on Cu4-nSnn, Cu4-nSnn/graphene and Cu4-nSnn/γ-Al2O3 was computed. The selectivity towards the competitive electrochemical hydrogen evolution reaction on these catalysts was also considered. The Cu2Sn2 cluster suppresses the hydrogen evolution reaction and is highly selective towards CO, if unsupported, or HCOOH if supported on graphene. This study demonstrates that the Cu2Sn2 cluster is a potential candidate for the electrocatalytic conversion of the CO2 molecule. Moreover, it identifies insightful structure-property relationships in Cu-based nanocatalysts, highlighting the influence of composition and catalyst support on CO2 activation.
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Affiliation(s)
- Akshayini Muthuperiyanayagam
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK.
| | - Azeem Ghulam Nabi
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK.
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering & Applied Sciences, P.O. Nilore, Islamabad, 45650, Pakistan
- Department of Physics, University of Gujrat, Jalalpur Jattan Road, Gujrat, Pakistan
| | - Qi Zhao
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK.
| | - Devis Di Tommaso
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK.
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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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Mejía-López J, Velásquez EA, Mazo-Zuluaga J. Low-energy configurations of Pt 6Cu 6 clusters and their physical-chemical characterization: a high-accuracy DFT study. Phys Chem Chem Phys 2022; 24:16011-16020. [PMID: 35730739 DOI: 10.1039/d2cp01614a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on a combination of many-body potentials, an analysis of the inertia tensors and a Density Functional Theory framework, we use a method to harvest the lowest energy states of any set of cluster systems. Then, this methodology is applied to the Pt6Cu6 cluster case and the structural, chemical, electronic, anisotropy, magnetic and vibrational properties of the lowest energy isomers are studied. Unexpectedly, some tens of isomers with much lower energy than the precedent believed ground state [J. Chem. Phys., 131(4):044701] are found, which indicates the goodness of this methodology. Some of the isomers obtained present the point groups Cs, C2v according to Schoenflies notation, while others do not exhibit specific symmetry operations. The global chemical descriptors as the ionization potential, the electron affinity and the chemical hardness have oscillating behaviors with overall decreasing trends as the energy of the isomer grows up, indicating a higher rate of deactivation by sintering processes and a higher strength of the adsorption of small molecules on these systems. We present interesting results of the electronic, magnetic, anisotropy, vibrational and thermal properties of these clusters and discuss them; what can be useful information for future experiments and technical applications in varied fields as catalysis, spintronics, molecular magnetism or magnetic storage information.
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Affiliation(s)
- J Mejía-López
- Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Facultad de Física, Pontificia Universidad Católica de Chile, CEDENNA, Santiago, Chile.,Facultad de Ciencias, Escuela Superior Politécnica de Chimborazo, Riobamba, Ecuador
| | - E A Velásquez
- Grupo Matbiom, Facultad de Ciencias Básicas, Universidad de Medellín, Cra. 87 30-65, Medellín, Colombia.
| | - J Mazo-Zuluaga
- Grupo de Instrumentación Científica y Microelectrónica, Grupo de Estado Sólido, IF-FCEN, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
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6
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Buendía F, Araiza DG, López-Rodríguez L, Paz-Borbón LO, Díaz G. Methanol interaction over Cu-Pt clusters supported on CeO2: Towards an understanding of adsorption sites. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Prasetyo N, Wicaksono HR. Effect of Pt cluster size on CO 2 adsorption and activation on (110) and (100) γ-alumina surfaces: insights from DFT using a periodic boundary approach. J Mol Model 2022; 28:137. [PMID: 35513565 DOI: 10.1007/s00894-022-05126-7] [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: 11/10/2021] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Abstract
We performed a structural investigation on the adsorption and activation of CO2 molecules on different sized Pt clusters to study the effect of Pt cluster size on CO2 adsorption. Several Ptx clusters (x = 1-5 and 13) were analyzed to represent metal dispersion on surfaces and nanoscale metal clusters. For (110) γ-alumina surfaces, the Pt2 cluster site was the most stable. In addition, the Pt3 cluster site was the most stable for CO2 adsorption on Pt/Al2O3. Charge transfer from Pt clusters to CO2 was critical for CO2 activation.
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Affiliation(s)
- Niko Prasetyo
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta, 55281, Indonesia.
| | - Hanan Rizal Wicaksono
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta, 55281, Indonesia
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8
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Montejo-Alvaro F, González-Quijano D, Valmont-Pineda JA, Rojas-Chávez H, Juárez-García JM, Medina DI, Cruz-Martínez H. CO 2 Adsorption on PtCu Sub-Nanoclusters Deposited on Pyridinic N-Doped Graphene: A DFT Investigation. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7619. [PMID: 34947212 PMCID: PMC8708036 DOI: 10.3390/ma14247619] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 11/25/2021] [Accepted: 11/25/2021] [Indexed: 11/23/2022]
Abstract
To reduce the CO2 concentration in the atmosphere, its conversion to different value-added chemicals plays a very important role. Nevertheless, the stable nature of this molecule limits its conversion. Therefore, the design of highly efficient and selective catalysts for the conversion of CO2 to value-added chemicals is required. Hence, in this work, the CO2 adsorption on Pt4-xCux (x = 0-4) sub-nanoclusters deposited on pyridinic N-doped graphene (PNG) was studied using the density functional theory. First, the stability of Pt4-xCux (x = 0-4) sub-nanoclusters supported on PNG was analyzed. Subsequently, the CO2 adsorption on Pt4-xCux (x = 0-4) sub-nanoclusters deposited on PNG was computed. According to the binding energies of the Pt4-xCux (x = 0-4) sub-nanoclusters on PNG, it was observed that PNG is a good material to stabilize the Pt4-xCux (x = 0-4) sub-nanoclusters. In addition, charge transfer occurred from Pt4-xCux (x = 0-4) sub-nanoclusters to the PNG. When the CO2 molecule was adsorbed on the Pt4-xCux (x = 0-4) sub-nanoclusters supported on the PNG, the CO2 underwent a bond length elongation and variations in what bending angle is concerned. In addition, the charge transfer from Pt4-xCux (x = 0-4) sub-nanoclusters supported on PNG to the CO2 molecule was observed, which suggests the activation of the CO2 molecule. These results proved that Pt4-xCux (x = 0-4) sub-nanoclusters supported on PNG are adequate candidates for CO2 adsorption and activation.
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Affiliation(s)
- Fernando Montejo-Alvaro
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla, Abasolo S/N, Barrio del Agua Buena, Santiago Suchilquitongo, Oaxaca 68230, Mexico;
| | - Diego González-Quijano
- Centro de Ciencias de la Ingeniería, Universidad Autónoma de Aguascalientes Campus sur, Av. Prolongación Mahatma Ghandi 6601, Colonia el Gigante 20340, Aguascalientes, Mexico;
| | - Jorge A. Valmont-Pineda
- Tecnológico Nacional de México, Instituto Tecnológico del Istmo, Panamericana 821, 2da., Juchitán de Zaragoza, Oaxaca 70000, Mexico;
| | - Hugo Rojas-Chávez
- Tecnológico Nacional de México, Instituto Tecnológico de Tláhuac II, Camino Real 625, Tláhuac, Ciudad de México 13508, Mexico;
| | - José M. Juárez-García
- Universidad Tecnológica del Estado de Querétaro, Av. Pie de la Cuesta 2501, Nacional, Santiago de Querétaro, Querétaro 76148, Mexico;
| | - Dora I. Medina
- Tecnologico de Monterrey, School of Engineering and Sciences, Atizapan de Zaragoza 52926, Estado de Mexico, Mexico
| | - Heriberto Cruz-Martínez
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla, Abasolo S/N, Barrio del Agua Buena, Santiago Suchilquitongo, Oaxaca 68230, Mexico;
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9
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Szalay M, Buzsáki D, Barabás J, Faragó E, Janssens E, Nyulászi L, Höltzl T. Screening of transition metal doped copper clusters for CO 2 activation. Phys Chem Chem Phys 2021; 23:21738-21747. [PMID: 34549207 DOI: 10.1039/d1cp02220b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Activation of CO2 is the first step towards its reduction to more useful chemicals. Here we systematically investigate the CO2 activation mechanism on Cu3X (X is a first-row transition metal atom) using density functional theory computations. The CO2 adsorption energies and the activation mechanisms depend strongly on the selected dopant. The dopant electronegativity, the HOMO-LUMO gap and the overlap of the frontier molecular orbitals control the CO2 dissociation efficiency. Our calculations reveal that early transition metal-doped (Sc, Ti, V) clusters exhibit a high CO2 adsorption energy, a low activation barrier for its dissociation, and a facile regeneration of the clusters. Thus, early transition metal-doped copper clusters, particularly Cu3Sc, may be efficient catalysts for the carbon capture and utilization process.
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Affiliation(s)
- Máté Szalay
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary.
| | - Dániel Buzsáki
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary.
| | - Júlia Barabás
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary.
| | - Endre Faragó
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary.
| | - Ewald Janssens
- Quantum Solid-State Physics, KU Leuven, Celestijnenlaan 200D, BE-3001 Leuven, Belgium
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary. .,MTA-BME Computation Driven Research Group, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
| | - Tibor Höltzl
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary. .,MTA-BME Computation Driven Research Group, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary.,Furukawa Electric Institute of Technology, Nanomaterials Science Group, Késmárk utca 28/A, H-1158 Budapest, Hungary
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10
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Ha NN, Thi Thu Ha N, Cam LM. New insight into the mechanism of carbon dioxide activation on copper-based catalysts: A theoretical study. J Mol Graph Model 2021; 107:107979. [PMID: 34217023 DOI: 10.1016/j.jmgm.2021.107979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/16/2021] [Accepted: 06/24/2021] [Indexed: 11/18/2022]
Abstract
A combination of Artificial Bee Colony algorithm, eXtended Tight Binding and Density functional theory methods were performed to study the activation process of carbon dioxide (CO2) over copper (Cu4 cluster) based catalytic systems. The findings revealed that the activation of the C-O bond resulted from the electron transfer to σ*, π* - MO of CO2. The more the electrons are transferred to CO2, the more the C-O bond is activated and elongated. The suitability of several metal oxide supports (Fe2O3, Al2O3, MgO, ZnO) is estimated using calculated electronic parameters (global electrophilicity index, vertical ionization potential and vertical electron affinity). Aside from demonstrating the appropriateness of Al2O3 and ZnO, a thorough examination of MgO revealed that, due to the formation of stable carbonate products, this oxide is not really appropriate as a support for copper-based catalysts in CO2 conversion. Our studies have also shown that the electron enrichment of copper atoms plays a key role in the activation of C-O bonds. Alkali metal doping (Li, K, Cs) significantly improves the catalytic efficiency of the Cu4 cluster. Based on the results of electron transfer to the CO2 molecule, the effect of doping alkali metal atoms may be organized in the following order: Cs > K > Li. A new core/shell catalytic system with potassium atoms in the core and copper atoms in the shell has been proposed and has proven to be a promising, efficient catalytic system in the CO2 adsorption and activation.
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Affiliation(s)
- Nguyen Ngoc Ha
- Faculty of Chemistry, Hanoi National University of Education, 100000, 136 Xuan Thuy Str., Hanoi, Viet Nam.
| | - Nguyen Thi Thu Ha
- Faculty of Chemistry, Hanoi National University of Education, 100000, 136 Xuan Thuy Str., Hanoi, Viet Nam.
| | - Le Minh Cam
- Faculty of Chemistry, Hanoi National University of Education, 100000, 136 Xuan Thuy Str., Hanoi, Viet Nam.
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11
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Luna-Valenzuela A, Cabellos JL, Posada-Amarillas A. Effect of temperature on the structure of Pd8 and Pd7Au1 clusters: an Ab initio molecular dynamics approach. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02771-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Gálvez-González LE, Posada-Amarillas A, Paz-Borbón LO. Structure, Energetics, and Thermal Behavior of Bimetallic Re-Pt Clusters. J Phys Chem A 2021; 125:4294-4305. [PMID: 34008972 DOI: 10.1021/acs.jpca.0c11303] [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
Bimetallic Re-Pt is a widely used catalyst in petroleum reforming to obtain high-octane gasoline, but experimental and theoretical information of such systems at the subnanometer scale-namely, as cluster aggregates-is currently lacking. Thus, in this work, we performed a density functional theory-based global optimization study to determine the physicochemical properties of the most stable Re-Pt gas-phase clusters up to six atoms for all compositions. Our results indicate that in these putative global minima (GM) geometries, Re atoms tend to aggregate, while most Pt atoms remain separated from each other. This is even observed in Pt-rich clusters-an indication of the strength of the Re-Re and Re-Pt bonds over pure Pt-Pt ones-due to a strong, directional hybridization of the Re half-filled 5d and the nearly full Pt 5d states. We observe that doping monometallic Pt clusters even with a single Re atom increases their binding energy values and widens the bimetallic cluster highest occupied molecular orbital-lowest unoccupied molecular orbital gap. As catalysis occurs at elevated temperatures, we explore the concept of cluster fluxionality for Re-Pt minima in terms of the calculated isomer occupation probability, P(T). This allows us to quantify the abundance of GM and low-energy isomer configurations as a function of temperature. This is done at size 5 atoms due to the wide isomer observed variety. Our calculations indicate that for pure Re5, the P(T) of the GM configuration substantially decreases after 750 K. Especially, for Re4Pt1, the GM is the dominant structure up to nearly 700 K when the second-energy isomer becomes the stable one. Although no ordering changes are seen for Re3Pt2, Re2Pt3, and Re1Pt4, we do observe a structural transition-between the GM and the second isomer-for pure Pt5 above 1000 K. We expect this type of combined first-principles analysis to add to the overall, continuous understanding of the stability and energetics of ultrafine and highly-dispersed Re-Pt petroleum-reforming catalysts and the scarce available information on this particular bimetallic system.
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Affiliation(s)
- Luis E Gálvez-González
- Programa de Doctorado en Ciencias (Física), División de Ciencias Exactas y Naturales, Universidad de Sonora, Blvd. Luis Encinas y Rosales, Hermosillo, Sonora 83000, Mexico
| | - Alvaro Posada-Amarillas
- Departamento de Investigación en Física, Universidad de Sonora, Blvd. Luis Encinas y Rosales, Hermosillo, Sonora 83000, Mexico
| | - Lauro Oliver Paz-Borbón
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
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13
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Wang X, Pan J, Wei H, Li W, Zhao J, Hu Z. CO 2 activation and dissociation on In 2O 3(110) supported Pd nPt (4-n) ( n = 0-4) catalysts: a density functional theory study. Phys Chem Chem Phys 2021; 23:11557-11567. [PMID: 33978017 DOI: 10.1039/d1cp01015h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Converting CO2 into valuable chemicals via catalytic reactions can mitigate both the greenhouse effect and energy shortage problems, thus designing efficient catalysts have attracted considerable attention over the past decades. In this work, a density functional theory (DFT) calculation was carried out to investigate the CO2 activation and dissociation processes on various PdnPt(4-n)/In2O3 (n = 0-4) catalysts. The PdnPt(4-n)/In2O3 models were initially built, and the interface sites of PdnPt(4-n)/In2O3 for CO2 adsorption were confirmed among cluster sites and substrate sites. The CO2 adsorption geometries, charger transfer, and projected density of states (PDOS) were analyzed to study the CO2-PdnPt(4-n)/In2O3 interactions. From the adsorbed *CO2, the transition states (TSs) for CO2 dissociation to form *CO and *O were gained to reveal the characteristics of the activated CO2δ-. Overall, according to the adsorption energy Eads results, the bimetallic PdPt3/In2O3 and Pd3Pt/In2O3 catalysts showed the strongest and weakest CO2 adsorption stabilities, respectively, while the Pd element addition decreases the barriers for CO2 dissociation with the priority order of Pd4 > Pd3Pt > Pd2Pt2 > PdPt3 > Pt4. The Brønsted-Evans-Polanyi (BEP) relation between activation barriers (Eb) and reaction energies E was obtained for the CO2 dissociation mechanism on PdnPt(4-n)/In2O3 catalysts with the equation of E = 0.20Eb + 0.40. Finally, the optimal Pd2Pt2/In2O3 catalyst for CO2 activation and dissociation was proposed. This study provides useful information for CO2 activation and conversation procedures on bimetal-oxide catalysts, and helps to take the optimal design of PdPt/In2O3 catalysts for the CO2 reaction.
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Affiliation(s)
- Xiaowen Wang
- State Key Laboratory of Engines, Tianjin University, China.
| | - Jiaying Pan
- State Key Laboratory of Engines, Tianjin University, China.
| | - Haiqiao Wei
- State Key Laboratory of Engines, Tianjin University, China.
| | - Wenjia Li
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, China
| | - Jun Zhao
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, China
| | - Zhen Hu
- State Key Laboratory of Engines, Tianjin University, China.
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14
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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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15
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Megha, Mondal K, Ghanty TK, Banerjee A. Adsorption and Activation of CO 2 on Small-Sized Cu-Zr Bimetallic Clusters. J Phys Chem A 2021; 125:2558-2572. [PMID: 33728907 DOI: 10.1021/acs.jpca.1c00751] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Adsorption and activation of CO2 is a key step in any chemical reaction, which aims to convert it to other useful chemicals. Therefore, it is important to understand the factors that drive the activation process and also search for materials that promote the process. We employ the density functional theory to explore the possibility of using small-sized bimetallic Cu-Zr clusters, Cu4-nZrn, with n = 1-3 for the above-mentioned key step. Our results suggest that after adsorption, a CO2 molecule preferably resides on Zr atoms or at the bridge and triangular faces formed by Zr atoms in bimetallic Cu-Zr clusters accompanied with its high degree of activation. Importantly, maximum activation occurs when CO2 is adsorbed on the CuZr3 cluster. Interestingly, we find that the adsorption energy of CO2 can be tuned by varying the extent of the Zr atom in Cu-Zr clusters. We rationalize the high adsorption of CO2 with the increase in the number of Zr atoms using the d-band center model and the concept of chemical hardness. The strong chemisorption and high activation of CO2 are ascribed to charge migration between Cu-Zr clusters and the CO2 molecule. We find an additional band in the infrared vibrational spectra of CO2 chemisorbed on all of the clusters, which is absent in the case of free CO2. We also observe that the energy barriers for the direct dissociation of the CO2 molecule to CO and O decrease significantly on bimetallic Cu-Zr clusters as compared to that on pure Cu4. In particular, the barrier heights are considerably small for Cu3Zr and CuZr3 clusters. This study demonstrates that Cu3Zr and CuZr3 clusters may serve as good candidates for activation and dissociation of the CO2 molecule.
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Affiliation(s)
- Megha
- Human Resources Development Section, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.,Homi Bhabha National Institute, Training School Complex, Anushaktinagar 400094, Mumbai, India
| | - Krishnakanta Mondal
- Department of Physics, Central University of Punjab, Bathinda 151001, Punjab, India
| | - Tapan K Ghanty
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar 400094, Mumbai, India.,Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400085, India.,Bio-Science Group, Bhabha Atomic Research Centre, Anushaktinagar 400085, Mumbai, India
| | - Arup Banerjee
- Human Resources Development Section, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.,Homi Bhabha National Institute, Training School Complex, Anushaktinagar 400094, Mumbai, India
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16
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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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17
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Mubashir M, Jusoh N, Majeed Z, Rambabu K, Banat F, Tao Y. WITHDRAWN: Sustainable liquid membrane separation using interfacial engineering of deep eutectic solvent and cellulose acetate. JOURNAL OF HAZARDOUS MATERIALS 2020:124345. [PMID: 33153798 DOI: 10.1016/j.jhazmat.2020.124345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/09/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
This article has been withdrawn at the request of the editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Muhammad Mubashir
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB, Eindhoven, the Netherlands.
| | - Norwahyu Jusoh
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Perak, Malaysia
| | - Zahid Majeed
- Department of Biotechnology, University of Azad Jammu and Kashmir, State of Azad Jammu and Kashmir, Pakistan
| | - K Rambabu
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Yang Tao
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
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18
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Ahmed AA. Structural and electronic properties of the adsorption of nitric oxide molecule on copper clusters CuN(N = 1–7): A DFT study. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Jogender, Mandeep, Badhani B, Kakkar R. Adsorption of methyl isocyanate on M4 (M=Fe, Ni, and Cu) cluster-decorated graphene and vacancy graphene: a DFT-D2 study. Struct Chem 2020. [DOI: 10.1007/s11224-020-01552-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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21
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Buendía F, Anzaldo AT, Vital C, Beltrán MR. O 2 activation by AuAg clusters on a defective (100)MgO surface. J Chem Phys 2020; 152:024303. [PMID: 31941299 DOI: 10.1063/1.5129462] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In the present work, we discuss the electronic properties of supported dispersed bimetallic clusters with respect to their size, geometry, and Aun/Agm (n + m = 6) composition. We have studied with supercell-density functional theory calculations the role of the charge transfer from the MgO defective support toward the cluster in the activation of O2 by AunAgm clusters. We first considered gas-phase clusters with different atomic compositions; then, we deposited all of them on a pristine (100)MgO surface and finally on a more realistic (100)MgO F-center. We performed a global and unrestricted search of the (cluster + surface) geometry. The Mexican enhanced genetic algorithm has been used to exhaustively explore the potential energy surface. Our results show that O2 activation depends on the Aun/Agm ratio. It has been found that both metals involved play different and important roles toward (a) the actual O2 dissociation and (b) weakening of the oxygen-cluster bond, which, in turn, may promote the possibility of a catalytic process to take place, such as the oxidation process of CO and NOx among others.
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Affiliation(s)
- F Buendía
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico
| | - A T Anzaldo
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. 70-360, C. P. 04510, Coyoacán, Ciudad de México, Mexico
| | - Carlos Vital
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. 70-360, C. P. 04510, Coyoacán, Ciudad de México, Mexico
| | - M R Beltrán
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. 70-360, C. P. 04510, Coyoacán, Ciudad de México, Mexico
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22
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Batista KEA, Ocampo-Restrepo VK, Soares MD, Quiles MG, Piotrowski MJ, Da Silva JLF. Ab Initio Investigation of CO2 Adsorption on 13-Atom 4d Clusters. J Chem Inf Model 2020; 60:537-545. [DOI: 10.1021/acs.jcim.9b00792] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Krys E. A. Batista
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900 Pelotas, RS, Brazil
| | | | - Marinalva D. Soares
- Department of Science and Technology, Federal University of São Paulo, 12247-014 São José dos Campos, SP, Brazil
| | - Marcos G. Quiles
- Department of Science and Technology, Federal University of São Paulo, 12247-014 São José dos Campos, SP, Brazil
| | - Maurício J. Piotrowski
- Department of Physics, Federal University of Pelotas, PO Box 354, 96010-900 Pelotas, RS, Brazil
| | - Juarez L. F. Da Silva
- São Carlos Institute of Chemistry, University of São Paulo, PO Box 780, 13560-970 São Carlos, SP, Brazil
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23
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Ocampo-Restrepo VK, Zibordi-Besse L, Da Silva JLF. Ab initio investigation of the atomistic descriptors in the activation of small molecules on 3d transition-metal 13-atom clusters: The example of H 2, CO, H 2O, and CO 2. J Chem Phys 2019; 151:214301. [PMID: 31822101 DOI: 10.1063/1.5125769] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The identification of the most important descriptors that drive the activation CO2 on transition-metal (TM) catalysts is a crucial step toward the conversion of CO2 into value-added chemicals; however, our atomistic understanding is far from satisfactory. Thus, aiming at the potential use of TM clusters in the conversion of CO2, we report density functional theory calculations of CO2, CO, H2O, and H2 adsorption on TM13 clusters (TM = Fe, Co, Ni, and Cu). Among the descriptors to evaluate the activation of the studied molecules, we found that the bond lengths increase, angles decrease, and their energetic variations upon the adsorption are the most important ones. From the structural response in anionic gas-phase molecules, the charge transfer toward CO2 and CO is pointed as relevant in their activation, and our results and analyses suggest that the adsorption on 3d TM13 clusters promote this charge donation process, decreasing in the order Fe13 > Co13 > Ni13 > Cu13. For CO2 and CO on Cu13, the activation was observed for highest energy configurations, indicating that is necessarily an additional driving force to occur the molecular activation on this material. Also, energetic parameters, adsorption energy, and interaction energy indicated that the strength of the adsorption is not necessarily proportional to the activation; it is difficult to point out these parameters as descriptors. Our results also provide interesting insights about steps of the CO2 reduction mechanism within the context of the modified Fischer-Tropsch synthesis.
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Affiliation(s)
- Vivianne K Ocampo-Restrepo
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, SP, Brazil
| | - Larissa Zibordi-Besse
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, 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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24
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Paz-Borbón LO, Buendía F, Garzón IL, Posada-Amarillas A, Illas F, Li J. CeO 2(111) electronic reducibility tuned by ultra-small supported bimetallic Pt-Cu clusters. Phys Chem Chem Phys 2019; 21:15286-15296. [PMID: 31090767 DOI: 10.1039/c9cp01772k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Controlling Ce4+ to Ce3+ electronic reducibility in a rare-earth binary oxide such as CeO2 has enormous applications in heterogeneous catalysis, where a profound understanding of reactivity and selectivity at the atomic level is yet to be reached. Thus, in this work we report an extensive DFT-based Basin Hopping global optimization study to find the most stable bimetallic Pt-Cu clusters supported on the CeO2(111) oxide surface, involving up to 5 atoms in size for all compositions. Our PBE+U global optimization calculations indicate a preference for Pt-Cu clusters to adopt 2D planar geometries parallel to the oxide surface, due to the formation of strong metal bonds to oxygen surface sites and charge transfer effects. The calculated adsorption energy values (Eads) for both mono- and bimetallic systems are of the order of 1.79 up to 4.07 eV, implying a strong metal cluster interaction with the oxide surface. Our calculations indicate that at such sub-nanometer sizes, the number of Ce4+ surface atoms reduced to Ce3+ cations is mediated by the amount of Cu atoms within the cluster, reaching a maximum of three Ce3+ for a supported Cu5 cluster. Our computational results have critical implications on the continuous understanding of the strong metal-support interactions over reducible oxides such as CeO2, as well as the advancement of frontier research areas such as heterogeneous single-atom catalysts (SAC) and single-cluster catalysts (SCC).
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Affiliation(s)
- Lauro Oliver Paz-Borbón
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico.
| | - Fernando Buendía
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico.
| | - Ignacio L Garzón
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 CDMX, Mexico.
| | - Alvaro Posada-Amarillas
- Departamento de Investigación en Física, Universidad de Sonora, Blvd. Luis Encinas & Rosales, 83000 Hermosillo, Sonora, Mexico
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Quιmica Teòrica i Computacional (IQTCUB), de la Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jun Li
- Department of Chemistry, Tsinghua University, Haidian District, Beijing 100084, China and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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