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Jakub Z, Shahsavar A, Planer J, Hrůza D, Herich O, Procházka P, Čechal J. How the Support Defines Properties of 2D Metal-Organic Frameworks: Fe-TCNQ on Graphene versus Au(111). J Am Chem Soc 2024; 146:3471-3482. [PMID: 38253402 PMCID: PMC10859937 DOI: 10.1021/jacs.3c13212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
The functionality of 2D metal-organic frameworks (MOFs) is crucially dependent on the local environment of the embedded metal atoms. These atomic-scale details are best ascertained on MOFs supported on well-defined surfaces, but the interaction with the support often changes the MOF properties. We elucidate the extent of this effect by comparing the Fe-TCNQ 2D MOF on two weakly interacting supports: graphene and Au(111). We show that the Fe-TCNQ on graphene is nonplanar with iron in quasi-tetrahedral sites, but on Au(111) it is planarized by stronger van der Waals interaction. The differences in physical and electronic structures result in distinct properties of the supported 2D MOFs. The dz2 center position is shifted by 1.4 eV between Fe sites on the two supports, and dramatic differences in chemical reactivity are experimentally identified using a TCNQ probe molecule. These results outline the limitations of common on-surface approaches using metal supports and show that the intrinsic MOF properties can be partially retained on graphene.
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Affiliation(s)
- Zdeněk Jakub
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
| | - Azin Shahsavar
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
| | - Jakub Planer
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
| | - Dominik Hrůza
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
| | - Ondrej Herich
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
| | - Pavel Procházka
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
| | - Jan Čechal
- CEITEC−Central
European Institute of Technology, Brno University
of Technology, Purkyňova 123, Brno 61200, Czech Republic
- Institute
of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, Brno 61200,Czech Republic
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Li M, Li T, Jing Y. Nb 2S 2C Monolayers with Transition Metal Atoms Embedded at the S Vacancy Are Promising Single-Atom Catalysts for CO Oxidation. ACS OMEGA 2023; 8:31051-31059. [PMID: 37663518 PMCID: PMC10468833 DOI: 10.1021/acsomega.3c02984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 07/07/2023] [Indexed: 09/05/2023]
Abstract
Single atoms anchored on stable and robust two-dimensional (2D) materials are attractive catalysts for carbon monoxide (CO) oxidation. Here, 3d (Fe-Zn), 4d (Ru-Cd), and 5d (Os-Hg) transition metal-decorated Nb2S2C monolayers were systematically studied as potential single-atom catalysts for low-temperature CO oxidation reactions by performing first-principles calculations. Sulfur vacancies are essential for stabilizing the transition metals anchored on the surface of defective Nb2S2C. After estimating the structure stability, the aggregation trend of the embedded metal atoms, and adsorption strength of reactants and products, Zn-decorated defective Nb2S2C is predicted to be a promising catalyst to facilitate CO oxidation through the Langmuir-Hinshelwood (LH) mechanism with an energy barrier of only 0.25 eV. Our investigation indicates that defective carbosulfides can be promising substrates to generate efficient and low-cost single-atom catalysts for low-temperature CO oxidation.
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Affiliation(s)
- Manman Li
- Jiangsu Co-Innovation Centre
of Efficient Processing and Utilization of Forest Resources, College
of Chemical Engineering, Nanjing Forestry
University, Nanjing 210037, China
| | - Tianchun Li
- Jiangsu Co-Innovation Centre
of Efficient Processing and Utilization of Forest Resources, College
of Chemical Engineering, Nanjing Forestry
University, Nanjing 210037, China
| | - Yu Jing
- Jiangsu Co-Innovation Centre
of Efficient Processing and Utilization of Forest Resources, College
of Chemical Engineering, Nanjing Forestry
University, Nanjing 210037, China
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Rectangular Transition Metal-rTCNQ Organic Frameworks Enabling Polysulfide Anchoring and Fast Electrocatalytic Activity in Li-Sulfur Batteries: A Density Functional Theory Perspective. Molecules 2023; 28:molecules28052389. [PMID: 36903634 PMCID: PMC10005228 DOI: 10.3390/molecules28052389] [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: 01/26/2023] [Revised: 02/18/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Two-dimensional metal-organic frameworks (MOFs) have shown great development po-tential in the field of lithium-sulfur (Li-S) batteries. In this theoretical research work, we propose a novel 3d transition metals (TM)-embedded rectangular tetracyanoquinodimethane (TM-rTCNQ) as a potential high-performance sulfur host. The calculated results show that all TM-rTCNQ structures have excellent structural stability and metallic properties. Through exploring different adsorption patterns, we discovered that TM-rTCNQ (TM = V, Cr, Mn, Fe and Co) monolayers possess moderate adsorption strength for all polysulfide species, which is mainly due to the existence of the TM-N4 active center in these frame systems. Especially for the non-synthesized V-rCTNQ, the theoretical calculation fully predicts that the material has the most suitable adsorption strength for polysul-fides, excellent charging-discharging reaction and Li-ion diffusion performance. Additionally, Mn-rTCNQ, which has been synthesized experimentally, is also suitable for further experimental con-firmation. These findings not only provide novel MOFs for promoting the commercialization of Li-S batteries, but also provide unique insights for fully understanding their catalytic reaction mecha-nism.
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Jakub Z, Kurowská A, Herich O, Černá L, Kormoš L, Shahsavar A, Procházka P, Čechal J. Remarkably stable metal-organic frameworks on an inert substrate: M-TCNQ on graphene (M = Ni, Fe, Mn). NANOSCALE 2022; 14:9507-9515. [PMID: 35749122 DOI: 10.1039/d2nr02017c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Potential applications of 2D metal-organic frameworks (MOF) require the frameworks to be monophase and well-defined at the atomic scale, to be decoupled from the supporting substrate, and to remain stable at the application conditions. Here, we present three systems meeting this elusive set of requirements: M-TCNQ (M = Ni, Fe, Mn) on epitaxial graphene/Ir(111). We study the systems experimentally by scanning tunneling microscopy, low energy electron microscopy and X-ray photoelectron spectroscopy. When synthesized on graphene, the 2D M-TCNQ MOFs are monophase with M1(TCNQ)1 stoichiometry, no alternative structure was observed with slight variation of the preparation protocol. We further demonstrate a remarkable chemical and thermal stability of TCNQ-based 2D MOFs: all the studied systems survive exposure to ambient conditions, with Ni-TCNQ doing so without any significant changes to its atomic-scale structure or chemical state. Thermally, the most stable system is Fe-TCNQ which remains stable above 500 °C, while all the tested MOFs survive heating to 250 °C. Overall, the modular M-TCNQ/graphene system combines the atomic-scale definition required for fundamental studies with the robustness and stability needed for applications, thus we consider it an ideal model for research in single atom catalysis, spintronics or high-density storage media.
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Affiliation(s)
- Zdeněk Jakub
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Anna Kurowská
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Ondrej Herich
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Lenka Černá
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Lukáš Kormoš
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Azin Shahsavar
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Pavel Procházka
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
| | - Jan Čechal
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic.
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69, Brno, Czech Republic
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1D metal-dithiolene wires as a new class of bi-functional oxygen reduction and evolution single-atom electrocatalysts. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Xing Y, Guo Z, Su W, Wen W, Wang X, Zhang H. A review of the hot spot analysis and the research status of single-atom catalysis based on the bibliometric analysis. NEW J CHEM 2021. [DOI: 10.1039/d0nj05673a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The bibliometric method was used to analyze the development trend and research hotspots in past 10 years since the concept of single-atom catalysis was proposed in 2011. This article can provide some guidance for future research of SACs.
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Affiliation(s)
- Yi Xing
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
- Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants
| | - Zefeng Guo
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Wei Su
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
- Key Laboratory of Knowledge Automation for Industrial Processes
| | - Wei Wen
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Xiaona Wang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Hui Zhang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
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Xu XY, Lin S, Xu H, Guo H, Zhao C. AlN 4-Graphene as an efficient catalyst for CO oxidation: a DFT study. NEW J CHEM 2020. [DOI: 10.1039/d0nj03566a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT investigations suggest that AlN4-Gr shows high stability and superior catalytic performance towards CO oxidation without CO poisoning.
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Affiliation(s)
- Xian-Yan Xu
- College of Chemistry and Civil Engineering
- Shaoguan University
- Shaoguan 512005
- China
| | - Sina Lin
- College of Chemistry and Civil Engineering
- Shaoguan University
- Shaoguan 512005
- China
| | - Huiying Xu
- School of Pharmaceutical Sciences
- Guangzhou Medical University
- Guangzhou 511436
- China
| | - Huishi Guo
- College of Chemistry and Civil Engineering
- Shaoguan University
- Shaoguan 512005
- China
| | - Cunyuan Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
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Liu Z, Wu E, Li J, Liu S. Energy storage properties of a two-dimensional TiB 4 monolayer. Phys Chem Chem Phys 2019; 21:13151-13156. [PMID: 31172145 DOI: 10.1039/c9cp01864f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, the energy storage properties of TiB4 monolayers were studied within the density functional theory framework. Both CH4 and H2 were chosen as adsorption molecules, and their interactions with a TiB4 sheet were investigated. TiB4 attracted gas molecules via open Ti sites, and each Ti atom could adsorb a maximum of two molecules. Via the electronic density of the states and atomic charge analysis, we found that the mechanism for gas adsorption was mainly electrostatic. For H2 adsorption cases, orbital interactions also made contributions. As the combustion energy of one CH4 molecule is three times that of one H2, the TiB4-2CH4 compound can achieve the best equivalent gravimetric hydrogen density of 10.14 wt% with the average adsorption energy of 0.38 eV. Ab initio molecular dynamics calculations on this compound showed that there was no kinetic barrier during CH4 desorption. Moreover, the stacking of the TiB4 monolayers could weaken the energy storage capacity. Therefore, it should be avoided in practial usage. Based on the abovementioned results, the TiB4 monolayer was suggested to be a promising candidate for onboard energy storage.
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Affiliation(s)
- Zhiyang Liu
- Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China.
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Deng Q, Zhao J, Wu T, Chen G, Hansen HA, Vegge T. 2D transition metal–TCNQ sheets as bifunctional single-atom catalysts for oxygen reduction and evolution reaction (ORR/OER). J Catal 2019. [DOI: 10.1016/j.jcat.2018.12.012] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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