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Atomically dispersed Ru3 site catalysts for electrochemical sensing of small molecules. Biosens Bioelectron 2022; 216:114609. [DOI: 10.1016/j.bios.2022.114609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/12/2022] [Accepted: 07/28/2022] [Indexed: 11/19/2022]
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2
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Achieving complete electrooxidation of ethanol by single atomic Rh decoration of Pt nanocubes. Proc Natl Acad Sci U S A 2022; 119:e2112109119. [PMID: 35263231 PMCID: PMC8931248 DOI: 10.1073/pnas.2112109119] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Direct ethanol fuel cells are attracting growing attention as portable power sources due to their advantages such as higher mass-energy density than hydrogen and less toxicity than methanol. However, it is challenging to achieve the complete electrooxidation to generate 12 electrons per ethanol, resulting in a low fuel utilization efficiency. This manuscript reports the complete ethanol electrooxidation by engineering efficient catalysts via single-atom modification. The combined electrochemical measurements, in situ characterization, and density functional theory calculations unravel synergistic effects of single Rh atoms and Pt nanocubes and identify reaction pathways leading to the selective C–C bond cleavage to oxidize ethanol to CO2. This study provides a unique single-atom approach to tune the activity and selectivity toward complicated electrocatalytic reactions. The development of single site electrocatalysts such as single-atom catalyst (SAC) has demonstrated the advantages of high precious metal utilization and tunable metal-support interfacial properties. However, the fundamental understanding of unalloyed single metal atom decorated on a metallic substrate is still lacking. Herein, we report unalloyed single atomic, partially oxidized Rh on the Pt nanocube surface as the electrocatalyst to completely oxidize ethanol to CO2 at a record-low potential of 0.35 V. In situ X-ray absorption fine structure measurements and density functional theory calculations reveal that the single-atom Rh sites facilitate the C–C bond cleavage and the removal of the *CO intermediates. This work not only reveals the fundamental role of unalloyed, partially oxidized SAC in ethanol oxidation reaction but also offers a unique single-atom approach using low-coordination active sites on shape-controlled nanocatalysts to tune the activity and selectivity toward complicated catalytic reactions.
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Yang J, He D, Chen W, Zhu W, Zhang H, Ren S, Wang X, Yang Q, Wu Y, Li Y. Bimetallic Ru-Co Clusters Derived from a Confined Alloying Process within Zeolite-Imidazolate Frameworks for Efficient NH 3 Decomposition and Synthesis. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39450-39455. [PMID: 29052973 DOI: 10.1021/acsami.7b14134] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, a series of carbocatalysts containing Ru-based clusters have been prepared by the assistance of zeolite-imidazolate frameworks (ZIFs). The introduction of Ru is based on the adsorption of well-defined Ru3(CO)12 within the cavity of ZIFs following decomposition at 900 °C. Moreover, without breaking the skeleton and porosity of ZIFs, the as-generated Ru species would bond with the Co nodes in situ to form bimetallic Ru-Co clusters if the Co-bearing metal-organic frameworks were utilized as the host. Within the confined space of ZIFs, the assembly of Ru and Co could be rationally designed, and their structures could be sophisticatedly controlled at the atomic scale. Among these Ru-based compositions, the Ru-Co clusters@N-C exhibited remarkable catalytic activity for the NH3 decomposition to H2 and NH3 synthesis versus Ru-Co NPs@N-C, Ru clusters@N-C, and Ru NPs@N-C. This study may open up a new routine to synthesize metallic clusters or other subnano structures by the confinement of ZIFs.
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Affiliation(s)
- Jian Yang
- Center of Advanced Nanocatalysis (CAN-USTC), University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Dongsheng He
- Materials Characterization and Preparation Center (MCPC), Southern University of Science and Technology of China , Shenzhen, Guangdong 518055, China
| | - Wenxing Chen
- Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Wei Zhu
- Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Hui Zhang
- Key Laboratory of Oil and Gas Field Applied Chemistry of Sichuan Province, the Center of New Energy Materials and Technology, College of Chemistry and Chemical Engineering, Southwest Petroleum University , Chengdu 610500, China
| | - Shan Ren
- Key Laboratory of Oil and Gas Field Applied Chemistry of Sichuan Province, the Center of New Energy Materials and Technology, College of Chemistry and Chemical Engineering, Southwest Petroleum University , Chengdu 610500, China
| | - Xin Wang
- Center of Advanced Nanocatalysis (CAN-USTC), University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Qinghua Yang
- Center of Advanced Nanocatalysis (CAN-USTC), University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Yuen Wu
- Center of Advanced Nanocatalysis (CAN-USTC), University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Yadong Li
- Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University , Beijing 100084, China
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Thompson PBJ, Nguyen BN, Nicholls R, Bourne RA, Brazier JB, Lovelock KRJ, Brown SD, Wermeille D, Bikondoa O, Lucas CA, Hase TPA, Newton MA. X-ray spectroscopy for chemistry in the 2-4 keV energy regime at the XMaS beamline: ionic liquids, Rh and Pd catalysts in gas and liquid environments, and Cl contamination in γ-Al2O3. JOURNAL OF SYNCHROTRON RADIATION 2015; 22:1426-1439. [PMID: 26524308 DOI: 10.1107/s1600577515016148] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 08/28/2015] [Indexed: 06/05/2023]
Abstract
The 2-4 keV energy range provides a rich window into many facets of materials science and chemistry. Within this window, P, S, Cl, K and Ca K-edges may be found along with the L-edges of industrially important elements from Y through to Sn. Yet, compared with those that cater for energies above ca. 4-5 keV, there are relatively few resources available for X-ray spectroscopy below these energies. In addition, in situ or operando studies become to varying degrees more challenging than at higher X-ray energies due to restrictions imposed by the lower energies of the X-rays upon the design and construction of appropriate sample environments. The XMaS beamline at the ESRF has recently made efforts to extend its operational energy range to include this softer end of the X-ray spectrum. In this report the resulting performance of this resource for X-ray spectroscopy is detailed with specific attention drawn to: understanding electrostatic and charge transfer effects at the S K-edge in ionic liquids; quantification of dilution limits at the Cl K- and Rh L3-edges and structural equilibria in solution; in vacuum deposition and reduction of [Rh(I)(CO)2Cl]2 to γ-Al2O3; contamination of γ-Al2O3 by Cl and its potential role in determining the chemical character of supported Rh catalysts; and the development of chlorinated Pd catalysts in `green' solvent systems. Sample environments thus far developed are also presented, characterized and their overall performance evaluated.
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Affiliation(s)
| | - Bao N Nguyen
- School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
| | | | | | - John B Brazier
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Kevin R J Lovelock
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Simon D Brown
- XMaS, UK CRG, ESRF, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Didier Wermeille
- XMaS, UK CRG, ESRF, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Oier Bikondoa
- XMaS, UK CRG, ESRF, 71 Avenue des Martyrs, 38043 Grenoble, France
| | - Christopher A Lucas
- Department of Physics, University of Liverpool, Oliver Lodge Laboratory, Liverpool L69 7ZE, UK
| | - Thomas P A Hase
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Mark A Newton
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
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Fierro-Gonzalez JC, Kuba S, Hao Y, Gates BC. Oxide- and Zeolite-Supported Molecular Metal Complexes and Clusters: Physical Characterization and Determination of Structure, Bonding, and Metal Oxidation State. J Phys Chem B 2006; 110:13326-51. [PMID: 16821852 DOI: 10.1021/jp0571123] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article is a review of the physical characterization of well-defined site-isolated molecular metal complexes and metal clusters supported on metal oxides and zeolites. These surface species are of interest primarily as catalysts; as a consequence of their relatively uniform structures, they can be characterized much more precisely than traditional supported catalysts. The properties discussed in this review include metal nuclearity, oxidation state, and ligand environment, as well as metal-support interactions. These properties are determined by complementary techniques, including transmission electron microscopy; X-ray absorption, infrared, Raman, and NMR spectroscopies; and density functional theory. The strengths and limitations of these techniques are assessed in the context of results characterizing samples that have been investigated thoroughly and with multiple techniques. The depth of understanding of well-defined metal complexes and metal clusters on supports is approaching that attainable for molecular analogues in solution. The results provide a foundation for understanding the more complex materials that are typical of industrial catalysts.
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Affiliation(s)
- Juan C Fierro-Gonzalez
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, USA
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Hydrogenation and isomerization of 1-hexene with Ru3(CO)9(PPh2CH2CH2Si(OMe)3)3 immobilized in silica matrices via the sol–gel method. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1169(02)00022-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Goellner JF, Gates BC, Vayssilov GN, Rösch N. Structure and Bonding of a Site-Isolated Transition Metal Complex: Rhodium Dicarbonyl in Highly Dealuminated Zeolite Y. J Am Chem Soc 2000. [DOI: 10.1021/ja001209f] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jesse F. Goellner
- Contribution from the Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische und Theoretische Chemie, Technische Universität München, 85747 Garching, Germany
| | - Bruce C. Gates
- Contribution from the Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische und Theoretische Chemie, Technische Universität München, 85747 Garching, Germany
| | - Georgi N. Vayssilov
- Contribution from the Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische und Theoretische Chemie, Technische Universität München, 85747 Garching, Germany
| | - Notker Rösch
- Contribution from the Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische und Theoretische Chemie, Technische Universität München, 85747 Garching, Germany
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Osman JR, Crayston JA, Richens DT. Structure of Tetrameric Aqua Ruthenium(IV): an Investigation by Ruthenium K Edge EXAFS. Inorg Chem 1998. [DOI: 10.1021/ic9711271] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julian R. Osman
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, KY16 9ST, Scotland, UK
| | - Joe A. Crayston
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, KY16 9ST, Scotland, UK
| | - David T. Richens
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, KY16 9ST, Scotland, UK
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Nagata T, Pohl M, Weiner H, Finke RG. Polyoxoanion-Supported Organometallic Complexes: Carbonyls of Rhenium(I), Iridium(I), and Rhodium(I) That Are Soluble Analogs of Solid-Oxide-Supported M(CO)(n)()(+) and That Exhibit Novel M(CO)(n)()(+) Mobility. Inorg Chem 1997; 36:1366-1377. [PMID: 11669714 DOI: 10.1021/ic960910a] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Dawson-type P(2)W(15)Nb(3)O(62)(9)(-) polyoxoanion-supported Re(CO)(3)(+) complex, [Re(CO)(3).P(2)W(15)Nb(3)O(62)](8)(-) (1), has been synthesized and characterized in two different counter-cation compositions. The [(n-C(4)H(9))(4)N](8)(8+) complex provides a highly soluble compound which exists as a single isomer in solution. The carbonyl stretching infrared frequencies suggest that the P(2)W(15)Nb(3)O(62)(9)(-) ligand serves as a strong electron donor to the Re(CO)(3)(+) fragment. The P(2)W(15)Nb(3)O(62)(9)(-) polyoxoanion-supported Ir(CO)(2)(+) complex [Ir(CO)(2).P(2)W(15)Nb(3)O(62)](8)(-) (2) has also been synthesized and characterized as its octakis(tetrabutylammonium), [(n-C(4)H(9))(4)N](8)(8+), salt. This compound was characterized by NMR and IR, results which demonstrate that 2 also exists as a single isomer in solution. The [Ir(CO)(2).P(2)W(15)Nb(3)O(62)](8)(-) complex is stable in the absence of water, but decomposes quickly in the presence of even 1 equiv of water. Attempted preparation of the analogous P(2)W(15)Nb(3)O(62)(9)(-) -supported Rh(CO)(2)(+) complex (3), while monitoring by (31)P NMR, revealed that this compound is unstable in solution at room temperature. In addition, we have discovered that added Na(+) can induce the formation of non-C(3)(v)() symmetry isomers of supported Re(CO)(3)(+) and Ir(CO)(2)(+) and, by inference, supported Ir(1,5-COD)(+). When Na(+) is removed from these systems by addition of Kryptofix[2.2.2], the non-C(3)(v)() isomers convert back to the single, C(3)(v)() isomer with heating, thereby providing a model system for the little studied mobility of M(CO)(n)()(+) cations across a soluble-oxide surface. When [Rh(CO)(2).P(2)W(15)Nb(3)O(62)](8)(-) is irradiated in the presence of hydrogen and cyclohexene a novel polyoxoanion-stabilized Rh(0)(n)() nanocluster is formed, results that bear a strong analogy to Yates' work studying atomically-dispersed Rh(CO)(2)(+) on solid Al(2)O(3).(10e) Yates and co-workers observe that Rh(CO)(+).Al(2)O(3) loses a CO upon photolysis, and that the resultant Rh(CO)(1)(+).Al(2)O(3) is reduced under H(2) to form Rh(0), which in turn yields Rh(0)(n)() clusters on Al(2)O(3)-a process that, intriguingly, is largely reversible if CO is readded. Also briefly discussed is other relevant literature of solid-oxide-supported Re(CO)(3)(+) and M(CO)(2)(+) (M = Ir, Rh), literature that makes apparent the potential significance of these complexes as EXAFS and other spectroscopic models of solid-oxide-supported M(CO)(n)()(+).
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Affiliation(s)
- Toshi Nagata
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523
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Deutsch SE, Mestl G, Knözinger H, Gates BC. MgO-Supported Tetrairidium Clusters: Evidence of the Metal−Support Interface Structure from X-ray Absorption Spectroscopy. J Phys Chem B 1997. [DOI: 10.1021/jp9625725] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. E. Deutsch
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische Chemie, Ludwig-Maximillians Universität München, Sophienstrasse 11, 80333 München, Germany
| | - G. Mestl
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische Chemie, Ludwig-Maximillians Universität München, Sophienstrasse 11, 80333 München, Germany
| | - H. Knözinger
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische Chemie, Ludwig-Maximillians Universität München, Sophienstrasse 11, 80333 München, Germany
| | - B. C. Gates
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, and Institut für Physikalische Chemie, Ludwig-Maximillians Universität München, Sophienstrasse 11, 80333 München, Germany
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Bruce LA, Hoang M, Hughes AE, Turney TW. Reaction of triruthenium dodecacarbonyl with high-area rare earth oxides. Inorganica Chim Acta 1997. [DOI: 10.1016/s0020-1693(96)05132-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Extraction methods and surface reactions as a convenient methodology for the characterization of surface organometallic species. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/1381-1169(96)00114-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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FT-IR studies on the catalyst Ru3(CO)12/2,2′-bipyridine/SiO2 and related ruthenium-bipyridine surface complexes. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(95)05826-b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Scott SL, Basset JM. Stoichiometric and catalytic reactivity of organometallic fragments supported on inorganic oxides. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0304-5102(93)e0163-b] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Zecchina A, Aréan CO. Structure and Reactivity of Surface Species Obtained by Interaction of Organometallic Compounds with Oxidic Surfaces: IR Studies. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 1993. [DOI: 10.1080/01614949308014607] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Koningsberger DC, Gates BC. Nature of the metal-support interface in supported metal catalysts: Results from X-ray absorption spectroscopy. Catal Letters 1992. [DOI: 10.1007/bf00769664] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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