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Neog S, Dowerah D, Biswakarma N, Dutta P, Churi PP, Sarma PJ, Gour NK, Deka RC. Reaction Mechanism and Kinetics for the Selective Hydrogenation of Carbon Dioxide to Formic Acid and Methanol over the [Cu 2] 0,±1 Dimer. J Phys Chem A 2023; 127:8508-8529. [PMID: 37811794 DOI: 10.1021/acs.jpca.3c03609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
With the rapid growth of industrialization, deforestation, and burning of fossil fuels, undeniably there has been an incredible escalation of the CO2 concentration in the atmosphere. In order to mitigate the problem, the capture and utilization of CO2 in different value-added chemicals have thus remained topics of concerned research for more than a decade. Accordingly, we have performed molecular -level catalytic hydrogenation of CO2 to formic acid using bare [Cu2]0,±1 dimers as catalysts. The entire investigation has been performed using a density functional theory (DFT) method employing the Perdew-Burke-Ernzerhof (PBE) functional with the def2TZVPP basis set to explore the different possible routes and efficiency of the catalysts. Results reveal the feasibility of H2 dissociation on all three Cu2, Cu2+, and Cu2- dimers. The negatively charged hydride formed during H2 dissociation on Cu2 and Cu2+ dimers facilitates the formation of the HCOO* intermediate over COOH*, thereby providing product selectivity for HCOOH above CO. However, the reaction on the Cu2- dimer forms both HCOO* and COOH* intermediates, but HCOO*, being kinetically more favorable, results in HCOOH production. The free-energy change suggests that the complete reaction on Cu2 and Cu2+ dimers forms a stable product compared to the Cu2- dimer. Furthermore, H3COH production is studied using the title catalysts via the obtained HCOOH* intermediate from the reaction channel. Transition state theory (TST) has been considered to evaluate the rate constants for each step of the reaction. Overall results suggest Cu2 to be better compared to Cu2+ and Cu2- dimers for HCOOH formation and Cu2+ over Cu2 and Cu2- dimers to be more efficient for H3COH formation. This work opens the way for further investigation of the reaction mechanism and development of an efficient catalyst for CO2 hydrogenation.
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Affiliation(s)
- Shilpa Neog
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
| | - Dikshita Dowerah
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
| | - Nishant Biswakarma
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
| | - Priyanka Dutta
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
| | - Partha Pratim Churi
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
- Department of Chemistry, Dergaon Kamal Dowerah College, Dergaon-785614, Assam, India
| | - Plaban Jyoti Sarma
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
- Department of Chemistry, Gargaon College, Simaluguri-785686, Sivsagar, Assam, India
| | - Nand Kishor Gour
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
| | - Ramesh Chandra Deka
- CMML-Catalysis and Molecular Modelling Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, Napaam-784028, Assam, India
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Lushchikova OV, Reichegger J, Kollotzek S, Zappa F, Mahmoodi-Darian M, Bartolomei M, Campos-Martínez J, González-Lezana T, Pirani F, Scheier P. Solvation of cationic copper clusters in molecular hydrogen. Phys Chem Chem Phys 2023; 25:25251-25263. [PMID: 37700714 PMCID: PMC10528801 DOI: 10.1039/d3cp03452f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/05/2023] [Indexed: 09/14/2023]
Abstract
Multiply charged superfluid helium nanodroplets are utilized to facilitate the growth of cationic copper clusters (Cun+, where n = 1-8) that are subsequently solvated with up to 50 H2 molecules. Production of both pristine and protonated cationic Cu clusters are detected mass spectrometrically. A joint effort between experiment and theory allows us to understand the nature of the interactions determining the bonding between pristine and protonated Cu+ and Cu2+ cations and molecular hydrogen. The analysis reveals that in all investigated cationic clusters, the primary solvation shell predominantly exhibits a covalent bonding character, which gradually decreases in strength, while for the subsequent shells an exclusive non-covalent behaviour is found. Interestingly, the calculated evaporation energies associated with the first solvation shell markedly surpass thermal values, positioning them within the desirable range for hydrogen storage applications. This comprehensive study not only provides insights into the solvation of pristine and protonated cationic Cu clusters but also sheds light on their unique bonding properties.
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Affiliation(s)
- O V Lushchikova
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, Innsbruck 6020, Austria.
| | - J Reichegger
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, Innsbruck 6020, Austria.
| | - S Kollotzek
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, Innsbruck 6020, Austria.
| | - F Zappa
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, Innsbruck 6020, Austria.
| | - M Mahmoodi-Darian
- Department of Physics, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - M Bartolomei
- Instituto de Física Fundamental, IFF-CSIC, Serrano 123, Madrid 28006, Spain.
| | - J Campos-Martínez
- Instituto de Física Fundamental, IFF-CSIC, Serrano 123, Madrid 28006, Spain.
| | - T González-Lezana
- Instituto de Física Fundamental, IFF-CSIC, Serrano 123, Madrid 28006, Spain.
| | - F Pirani
- Dipartimento di Chimica, Biologia e Biotecnologie, Universita' di Perugia, 06123 Perugia, Italy
| | - P Scheier
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, Innsbruck 6020, Austria.
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Lan NT, Mai NT, Cuong NT, Van PTH, La DD, Tam NM, Ngo ST, Tung NT. Density Functional Study of Size-Dependent Hydrogen Adsorption on Ag n Cr ( n = 1-12) Clusters. ACS OMEGA 2022; 7:37379-37387. [PMID: 36312417 PMCID: PMC9607664 DOI: 10.1021/acsomega.2c04107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Increasing interest has been paid for hydrogen adsorption on atomically controlled nanoalloys due to their potential applications in catalytic processes and energy storage. In this work, we investigate the interaction of H2 with small-sized Ag n Cr (n = 1-12) using density functional theory calculations. It is found that the cluster structures are preserved during the adsorption of H2 either molecularly or dissociatively. Ag3Cr-H2, Ag6Cr-H2, and Ag9Cr-H2 clusters are identified to be relatively more stable from computed binding energies and second-order energy difference. The dissociation of adsorbed H2 on Ag2Cr, Ag3Cr, Ag6Cr, and Ag7Cr clusters is favored both thermodynamically and kinetically. The dissociative adsorption is unlikely to occur because of a considerable energy barrier before reaching the final state for Ag4Cr or due to energetic preferences for n = 1, 5, and 8-12 species. Comprehensive analysis shows that the geometric structure of clusters, the relative electronegativity, and the coordination number of the Cr impurity play a decisive role in determining the preferred adsorption configuration.
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Affiliation(s)
- Ngo Thi Lan
- Institute
of Materials Science and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi11307, Vietnam
- Institute
of Science and Technology, TNU-University
of Sciences, Tan Thinh Ward, Thai
Nguyen City250000, Vietnam
| | - Nguyen Thi Mai
- Institute
of Materials Science and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi11307, Vietnam
| | - Ngo Tuan Cuong
- Center
for Computational Science, Hanoi National
University of Education, Hanoi10000, Vietnam
| | - Phung Thi Hong Van
- Hanoi
University of Natural Resources and Environment, Hanoi10000, Vietnam
| | - Duong Duc La
- Institute
of Chemistry and Materials, Hanoi10000, Vietnam
| | - Nguyen Minh Tam
- Laboratory
of Theoretical and Computational Biophysics, Advanced Institute of
Materials Science, Ton Duc Thang University, Ho Chi Minh City72915, Vietnam
- Faculty
of Pharmacy, Ton Duc Thang University, Ho Chi Minh City72915, Vietnam
| | - Son Tung Ngo
- Laboratory
of Theoretical and Computational Biophysics, Advanced Institute of
Materials Science, Ton Duc Thang University, Ho Chi Minh City72915, Vietnam
- Faculty
of Pharmacy, Ton Duc Thang University, Ho Chi Minh City72915, Vietnam
| | - Nguyen Thanh Tung
- Institute
of Materials Science and Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi11307, Vietnam
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Electrocatalytic activity of metal encapsulated, doped, and engineered fullerene-based nanostructured materials towards hydrogen evolution reaction. Sci Rep 2022; 12:15608. [PMID: 36114360 PMCID: PMC9481569 DOI: 10.1038/s41598-022-20048-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/08/2022] [Indexed: 12/19/2022] Open
Abstract
The utilization of nanostructured materials as efficient catalyst for several processes has increased tremendously, and carbon-based nanostructured materials encompassing fullerene and its derivatives have been observed to possess enhanced catalytic activity when engineered with doping or decorated with metals, thus making them one of the most promising nanocage catalyst for hydrogen evolution reaction (HER) during electro-catalysis. Prompted by these, and the reported electrochemical, electronic and stability advantage, an attempt is put forward herein to inspect the metal encapsulated, doped, and decorated dependent HER activity of C24 engineered nanostructured materials as effective electro-catalyst for HER. Density functional theory (DFT) calculations have been utilized to evaluate the catalytic hydrogen evolution reaction activity of four proposed bare systems: fullerene (C24), calcium encapsulated fullerene (CaencC24), nickel-doped calcium encapsulated fullerene (NidopCaencC24), and silver decorated nickel-doped calcium encapsulated (AgdecNidopCaencC24) engineered nanostructured materials at the TPSSh/GenECP/6-311+G(d,p)/LanL2DZ level of theory. The obtained results divulged that, a potential decrease in energy gap (Egap) occurred in the bare systems, while a sparing increase was observed upon adsorption of hydrogen onto the surfaces, these surfaces where also observed to maintain the least EH–L gap while the AgdecNidopCaencC24 surface exhibited an increased electrocatalytic activity when compared to others. The results also showed that the electronic properties of the systems evinced a correspondent result with their electrochemical properties, the Ag-decorated surface also exhibited a proficient adsorption energy \documentclass[12pt]{minimal}
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\begin{document}$$({E}_{ads}^{H})$$\end{document}(EadsH) and Gibb’s free energy (ΔGH) value. The engineered Ag-decorated and Ni-doped systems were found to possess both good surface stability and excellent electro-catalytic property for HER activities.
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