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Guba M, Höltzl T. Stability and Electronic Structure of Nitrogen-Doped Graphene-Supported Cu n ( n = 1-5) Clusters in Vacuum and under Electrochemical Conditions: Toward Sensor and Catalyst Design. J Phys Chem C Nanomater Interfaces 2024; 128:4677-4686. [PMID: 38533239 PMCID: PMC10961840 DOI: 10.1021/acs.jpcc.3c06475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 03/28/2024]
Abstract
Here, we present a detailed computational study of the stability and the electronic structure of nitrogen-doped graphene (N4V2) supported Cun (n = 1-5) clusters, which are promising carbon-dioxide electroreduction catalysts. The binding of the clusters to the nitrogen-doped graphene and the electronic structure of these systems were investigated under vacuum and electrochemical conditions. The stability analysis showed that among the systems, the nitrogen-doped graphene bound Cu4 is the most stable in vacuum, while in an electrolyte, and at a negative potential, the N4V2-Cu3 is energetically more favorable. The ground state electronic structure of the nitrogen-doped graphene substrate undergoes topological phase transition, from a semimetallic state, and we observed a metallic and topologically trivial state after the clusters are deposited. The electrode potential adjusts the type and density of the charge carriers in the semimetallic models, while the structures containing copper exhibit bands which are deformed and relaxed by the modified number of electrons.
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Affiliation(s)
- Márton Guba
- Department
of Inorganic and Analytical Chemistry and HUN-REN-BME Computation
Driven Chemistry Research Group, Budapest
University of Technology and Economics, Szent Gellért tér 4, Budapest H-1111, Hungary
| | - Tibor Höltzl
- Department
of Inorganic and Analytical Chemistry and HUN-REN-BME Computation
Driven Chemistry Research Group, Budapest
University of Technology and Economics, Szent Gellért tér 4, Budapest H-1111, Hungary
- Nanomaterials
Science Group, Furukawa Electric Institute
of Technology, Késmárk
utca 28/A, Budapest H-1158, Hungary
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Zhu Y, Mu Y, Sun L, Zeng Z, Liu Z. Mechanistic study on the formation of the alkyl acrylates from CO 2, ethylene and alkyl iodides over nickel-based catalyst. Phys Chem Chem Phys 2023; 25:24733-24744. [PMID: 37670665 DOI: 10.1039/d3cp02943c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
The catalytic conversion of carbon dioxide (CO2) and olefins into acrylates has been a long standing target, because society attempts to synthesize commodity chemicals in a more economical and sustainable fashion. In this work, two alkylation reaction pathways were investigated to explore the role of methylene linkage (-CH2-) on the formation of alkyl acrylate from coupling of CO2 and ethylene, catalyzed by a nickel catalyst in the presence of different alkyl iodides. The energy barrier of Ni-O bond cleavage decreases with increasing methylene linkage of alkyl iodides, which may be due to NPA charge transfer of alkyl iodides. Meanwhile, the O1 (ester sp3 O atom) attack route leading to the formation of alkyl acrylate competes with the O2 (carboxylic sp2 O atom) attack route in terms of energy barriers. Further studies on the fluoro-substituted alkyl acrylates show that neither CF3I nor CF3CH2I is effective in releasing trifluoroalkyl acrylates from the nickellacycle, which explains why only negligible amounts of the desired product were detected in the experiment. In addition, we investigated the non-productive pathways leading to byproducts, such as propionic acid, propionates and ion pair complexes, etc. By comparing the results obtained with CH3I, the use of C2H5I as an electrophilic reagent may stabilize the non-productive intermediates. The methylene linkage has little effect on the main productive pathway. However, it has a significant influence on the side reactions, which is detrimental to the formation of alkyl acrylate in competing with the main productive pathway.
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Affiliation(s)
- Youcai Zhu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yue Mu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Li Sun
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Zuoxiang Zeng
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Zhen Liu
- School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
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Salzburger M, Saragi RT, Wensink FJ, Cunningham EM, Beyer MK, Bakker JM, Ončák M, van der Linde C. Carbon Dioxide and Water Activation by Niobium Trioxide Anions in the Gas Phase. J Phys Chem A 2023; 127:3402-3411. [PMID: 37040467 PMCID: PMC10123662 DOI: 10.1021/acs.jpca.3c01394] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Transition metals are important in various industrial applications including catalysis. Due to the current concentration of CO2 in the atmosphere, various ways for its capture and utilization are investigated. Here, we study the activation of CO2 and H2O at [NbO3]- in the gas phase using a combination of infrared multiple photon dissociation spectroscopy and density functional theory calculations. In the experiments, Fourier-transform ion cyclotron resonance mass spectrometry is combined with tunable IR laser light provided by the intracavity free-electron laser FELICE or optical parametric oscillator-based table-top laser systems. We present spectra of [NbO3]-, [NbO2(OH)2]-, [NbO2(OH)2]-(H2O) and [NbO(OH)2(CO3)]- in the 240-4000 cm-1 range. The measured spectra and observed dissociation channels together with quantum chemical calculations confirm that upon interaction with a water molecule, [NbO3]- is transformed to [NbO2(OH)2]- via a barrierless reaction. Reaction of this product with CO2 leads to [NbO(OH)2(CO3)]- with the formation of a [CO3] moiety.
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Affiliation(s)
- Magdalena Salzburger
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Rizalina T Saragi
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Frank J Wensink
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Ethan M Cunningham
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Martin K Beyer
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Joost M Bakker
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - Milan Ončák
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Christian van der Linde
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
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Boulbazine M, Boudjahem AG. Electronic properties and adsorption mechanism of Ru-doped copper clusters towards CH 3OH molecule: A DFT investigation. J Mol Graph Model 2023; 121:108442. [PMID: 36841203 DOI: 10.1016/j.jmgm.2023.108442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/23/2023]
Abstract
In this study, we have investigated the stability and electronic properties of the CunRu (n = 2-10) nanoclusters and their interaction with the CH3OH molecule without and with the presence of O2 molecule by using DFT calculations with TPSS/SDD/6-311g(d,p) level of theory. Based on the second energy difference (Δ2E), the results reveal that the CunRu (n = 4, 6 and 8) clusters are relatively more stable than their neighboring clusters. The values obtained for the Fukui function (f-) proves that the Ru atom in the CunRu clusters is an excellent adsorption site for the molecules. The interaction of the CunRu clusters with CH3OH molecule exhibits that the Ru atom is the preferred adsorption site for the CH3OH molecule, where the O atom of the CH3OH molecule is strongly chemisorbed onto the Ru site of the clusters, forming a strong bond between the Ru and O atoms. The copper sites of the clusters were found less preferred for the adsorption of CH3OH, and the complexes formed between both species are less stable than those obtained from the CH3OH chemisorption over the Ru site of the clusters. The interaction of CH3OH with the clusters was also evaluated in an oxidizing environment, and the results obtained reveal that the molecule is greatly chemisorbed over the ruthenium site with adsorption energies which vary from - 1.18 to - 2.05 eV. In the presence of the oxygen, the gap energy of the clusters was sharply changed after their interactions with the CH3OH molecule, suggesting that these clusters can easily detect the above molecule with great sensitivity. Therefore, the presence of the oxygen not only does not prevent the adsorption process, but it considerably promotes the CH3OH chemisorption onto the ruthenium site of the clusters and therefore significantly rises their sensitivity performance. In conclusion, the CunRu clusters could be employed as effective nanosensors for the CH3OH molecule detection.
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Affiliation(s)
- Mouhssin Boulbazine
- The Division of Research in Educational Technologies, National Institute for Research in Education, BP 193, Industrial Zone, Oued Romane, El Achour, Algeria; Computational Catalysis Group, Laboratory of Applied Chemistry, University of Guelma, Box 401, 24000, Guelma, Algeria.
| | - Abdel-Ghani Boudjahem
- Computational Catalysis Group, Laboratory of Applied Chemistry, University of Guelma, Box 401, 24000, Guelma, Algeria.
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Zou R, Sun K, Shen C, Liu CJ. Density functional theoretical study of the tungsten-doped In 2O 3 catalyst for CO 2 hydrogenation to methanol. Phys Chem Chem Phys 2022; 24:25522-25529. [DOI: 10.1039/d2cp03842k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
W doping makes CO2 hydrogenation to methanol on In2O3 kinetically more favorable based on DFT calculations.
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Affiliation(s)
- Rui Zou
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Kaihang Sun
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Chenyang Shen
- Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin, 300072, China
| | - Chang-Jun Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- Collaborative Innovation Center of Chemical Science & Engineering, Tianjin University, Tianjin, 300072, China
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