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Nguyen DTH, Salek S, Shultz-Johnson LR, Bélanger-Bouliga M, Jurca T, Byers JC, Nazemi A. Poly(N-Heterocyclic Carbene)-Capped Alloy and Core-Shell AuAg Bimetallic Nanoparticles. Angew Chem Int Ed Engl 2024; 63:e202409800. [PMID: 38887177 DOI: 10.1002/anie.202409800] [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: 05/24/2024] [Accepted: 06/17/2024] [Indexed: 06/20/2024]
Abstract
N-Heterocyclic carbene (NHC)-stabilized metal nanoparticles (NPs) have recently attracted considerable attention. While most efforts in the field have been devoted to the development of NHC-tethered monometallic NPs and enhancing their stabilities under various conditions, their bimetallic counterparts are rare in the literature. Herein, we demonstrate that the covalent immobilization of Au and Ag atoms on polymerized NHCs is a powerful method to access bimetallic AuAg NPs. In addition, we show that while AuAg alloy NPs are often obtained via this method, the use of bimetallic polymeric substrates with lower Ag content, relative to Au, results in the formation of core-shell NPs with Au core and Ag shell. Application of these nanomaterials for oxygen reduction reaction is demonstrated with all materials exhibiting electrocatalytic activity. This work demonstrates for the first time that while bimetallic poly(NHC-metal)s are viable substrates to access NHC-stabilized bimetallic NPs, careful adjustment of metal content in the polymeric substrates can finetune the microstructure of the resulting NPs, i.e. alloy vs. core-shell.
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Affiliation(s)
- Diep T H Nguyen
- Department of Chemistry, Université du Québec à Montréal, NanoQAM, Quebec Center for Advanced Materials (QCAM), C.P.8888, Succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada
| | - Samaneh Salek
- Department of Chemistry, Université du Québec à Montréal, NanoQAM, Quebec Center for Advanced Materials (QCAM), C.P.8888, Succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada
| | - Lorianne R Shultz-Johnson
- Department of Chemistry, Renewable Energy and Chemical Transformation Faculty Cluster, University of Central Florida, Orlando, Florida, 32816, USA
| | - Marilyne Bélanger-Bouliga
- Department of Chemistry, Université du Québec à Montréal, NanoQAM, Quebec Center for Advanced Materials (QCAM), C.P.8888, Succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada
| | - Titel Jurca
- Department of Chemistry, Renewable Energy and Chemical Transformation Faculty Cluster, University of Central Florida, Orlando, Florida, 32816, USA
| | - Joshua C Byers
- Department of Chemistry, Université du Québec à Montréal, NanoQAM, Quebec Center for Advanced Materials (QCAM), C.P.8888, Succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada
| | - Ali Nazemi
- Department of Chemistry, Université du Québec à Montréal, NanoQAM, Quebec Center for Advanced Materials (QCAM), C.P.8888, Succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada
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2
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Lu Y, Lin F, Zhang Z, Thompson C, Zhu Y, Doudin N, Kovarik L, García Vargas CE, Jiang D, Fulton JL, Wu Y, Gao F, Dohnálek Z, Karim AM, Wang H, Wang Y. Enhancing Activity and Stability of Pd-on-TiO 2 Single-Atom Catalyst for Low-Temperature CO Oxidation through in Situ Local Environment Tailoring. J Am Chem Soc 2024. [PMID: 39344102 DOI: 10.1021/jacs.4c07861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
The development of efficient Pd single-atom catalysts for CO oxidation, crucial for environmental protection and fundamental studies, has been hindered by their limited reactivity and thermal stability. Here, we report a thermally stable TiO2-supported Pd single-atom catalyst that exhibits enhanced intrinsic CO oxidation activity by tunning the local coordination of Pd atoms via H2 treatment. Our comprehensive characterization reveals that H2-treated Pd single atoms have reduced nearest Pd-O coordination and form short-distanced Pd-Ti coordination, effectively stabilizing Pd as isolated atoms even at high temperatures. During CO oxidation, partial replacement of the Pd-Ti coordination by O or CO occurs. This unique Pd local environment facilitates CO adsorption and promotes the activity of the surrounding oxygen species, leading to superior catalytic performance. Remarkably, the turnover frequency of the H2-treated Pd single-atom catalyst at 120 °C surpasses that of the O2-treated Pd single-atom catalyst and the most effective Pd/Pt single-atom catalysts by an order of magnitude. These findings open up new possibilities for the design of high-performance single-atom catalysts for crucial industrial and environmental applications.
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Affiliation(s)
- Yubing Lu
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Fan Lin
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Zihao Zhang
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Coogan Thompson
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Yifeng Zhu
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Nassar Doudin
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Libor Kovarik
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Carlos E García Vargas
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Dong Jiang
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - John L Fulton
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yiqing Wu
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Feng Gao
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Zdenek Dohnálek
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Ayman M Karim
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Huamin Wang
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Yong Wang
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
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3
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Li WQ, Xu M, Chen JS, Ye TN. Enabling Sustainable Ammonia Synthesis: From Nitrogen Activation Strategies to Emerging Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2408434. [PMID: 39194397 DOI: 10.1002/adma.202408434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 08/07/2024] [Indexed: 08/29/2024]
Abstract
Ammonia (NH3) is one of the most important precursors of various chemicals and fertilizers. Given that ammonia synthesis via the traditional Haber-Bosch process requires high temperatures and pressures, it is critical to explore effective strategies and catalysts for ammonia synthesis under mild reaction conditions. Although electrocatalysis and photocatalysis can convert N2 to NH3 under mild conditions, their efficiencies and production scales are still far from the requirements for industrialization. Thermal catalysis has been proven to be the most direct and effective approach for ammonia synthesis. Over the past few decades, significant efforts have been made to develop novel catalysts capable of nitrogen fixation and ammonia generation via thermal catalytic processes. In parallel with catalyst exploration, new strategies such as self-electron donation, hydride fixation, hydridic hydrogen reduction, and anionic vacancy promotion have also been explored to moderate the operating conditions and improve the catalytic efficiency of ammonia synthesis. In this review, the emergence of new materials and strategies for promoting N2 activation and NH3 formation during thermal catalysis is briefly summarized. Moreover, challenges and prospects are proposed for the future development of thermal catalytic ammonia synthesis.
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Affiliation(s)
- Wen-Qian Li
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Miao Xu
- State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources, Shanghai, 200245, China
| | - Jie-Sheng Chen
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tian-Nan Ye
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, China
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4
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Shultz-Johnson LR, Rahmani A, Frisch J, Hsieh TE, Hu L, Sosa J, Davy M, Xie S, Beazley MJ, Gao Z, Golvari P, Wang TH, Ong TG, Rudawski NG, Liu F, Banerjee P, Feng X, Bär M, Jurca T. Modifying the Substrate-Dependent Pd/Fe 2O 3 Catalyst-Support Synergism with ZnO Atomic Layer Deposition. ACS APPLIED MATERIALS & INTERFACES 2024; 16:39387-39398. [PMID: 39031912 DOI: 10.1021/acsami.4c01528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/22/2024]
Abstract
Low-loading Pd supported on Fe2O3 nanoparticles was synthesized. A common nanocatalyst system with previously reported synergistic enhancement of reactivity that is attributed to the electronic interactions between Pd and the Fe2O3 support. Fe2O3-selective precoalescence overcoating with ZnO atomic layer deposition (ALD), using Zn(CH2CH3)2 and H2O as precursors, dampens competitive hydrogenation reactivity at Fe2O3-based sites. The result is enhanced efficiency at the low-loading but high reactivity Pd sites. While this increases catalyst efficiency toward most aqueous redox reactions tested, it suppresses reactivity toward polyaromatic core substrates. X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) show minimal electronic impacts for the ZnO overcoat on the Pd particles, implying a predominantly physical site blocking effect as the reason for the modified reactivity. This serves as a proof-of-concept of not only stabilizing supported nanocatalysts but also altering reactivity with ultrathin ALD overcoats. The results point to a facile ALD route for selective enhancement of reactivity for low-loading Pd-based supported nanocatalysts.
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Affiliation(s)
- Lorianne R Shultz-Johnson
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
- Renewable Energy and Chemical Transformations Cluster (REACT), UCF, Orlando 32816, Florida, United States
| | - Azina Rahmani
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
- Renewable Energy and Chemical Transformations Cluster (REACT), UCF, Orlando 32816, Florida, United States
| | - Johannes Frisch
- Department Interface Design, Helmholtz-Zentrum Berlin Für Materialien und Energie GmbH (HZB), 12489 Berlin, Germany
- Energy Materials In-Situ Laboratory Berlin (EMIL), HZB, 12489 Berlin, Germany
| | - Tzung-En Hsieh
- Department Interface Design, Helmholtz-Zentrum Berlin Für Materialien und Energie GmbH (HZB), 12489 Berlin, Germany
- Energy Materials In-Situ Laboratory Berlin (EMIL), HZB, 12489 Berlin, Germany
| | - Lin Hu
- Department of Materials Science and Engineering, UCF, Orlando 32816, Florida, United States
| | - Jaynlynn Sosa
- NanoScience and Technology Center (NSTC), UCF, Orlando 32816, Florida, United States
| | - Marie Davy
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
| | - Shaohua Xie
- Department of Civil, Environmental, and Construction Engineering, UCF, Orlando 32816, Florida, United States
| | - Melanie J Beazley
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
| | - Zhengning Gao
- Department of Materials Science and Engineering, UCF, Orlando 32816, Florida, United States
| | - Pooria Golvari
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
| | - Ting-Hsuan Wang
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan, Republic of China
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, Guangdong, P. R. China
| | - Tiow-Gan Ong
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan, Republic of China
| | - Nicholas G Rudawski
- Herbert Wertheim College of Engineering Research Service Centers, University of Florida, Gainesville 32611, Florida, United States
| | - Fudong Liu
- Renewable Energy and Chemical Transformations Cluster (REACT), UCF, Orlando 32816, Florida, United States
- NanoScience and Technology Center (NSTC), UCF, Orlando 32816, Florida, United States
- Department of Civil, Environmental, and Construction Engineering, UCF, Orlando 32816, Florida, United States
- Department of Chemical and Environmental Engineering, University of California, Riverside 92521, California, United States
| | - Parag Banerjee
- Renewable Energy and Chemical Transformations Cluster (REACT), UCF, Orlando 32816, Florida, United States
- Department of Materials Science and Engineering, UCF, Orlando 32816, Florida, United States
- NanoScience and Technology Center (NSTC), UCF, Orlando 32816, Florida, United States
| | - Xiaofeng Feng
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
- Renewable Energy and Chemical Transformations Cluster (REACT), UCF, Orlando 32816, Florida, United States
- Department of Materials Science and Engineering, UCF, Orlando 32816, Florida, United States
- NanoScience and Technology Center (NSTC), UCF, Orlando 32816, Florida, United States
- Department of Physics, UCF, Orlando 32816, Florida, United States
| | - Marcus Bär
- Department Interface Design, Helmholtz-Zentrum Berlin Für Materialien und Energie GmbH (HZB), 12489 Berlin, Germany
- Energy Materials In-Situ Laboratory Berlin (EMIL), HZB, 12489 Berlin, Germany
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI ERN), Albert-Einstein-Str. 15, 12489 Berlin, Germany
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstr. 3, 91058 Erlangen, Germany
| | - Titel Jurca
- Department of Chemistry, University of Central Florida (UCF), Orlando 32816, Florida, United States
- Renewable Energy and Chemical Transformations Cluster (REACT), UCF, Orlando 32816, Florida, United States
- NanoScience and Technology Center (NSTC), UCF, Orlando 32816, Florida, United States
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5
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Breitwieser K, Bevilacqua M, Mullassery S, Dankert F, Morgenstern B, Grandthyll S, Müller F, Biffis A, Hering‐Junghans C, Munz D. Pd 8(PDip) 6: Cubic, Unsaturated, Zerovalent. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400699. [PMID: 38634573 PMCID: PMC11220702 DOI: 10.1002/advs.202400699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/22/2024] [Indexed: 04/19/2024]
Abstract
Atomically precise nanoclusters hold promise for supramolecular assembly and (opto)electronic- as well as magnetic materials. Herein, this work reports that treating palladium(0) precursors with a triphosphirane affords strongly colored Pd8(PDip)6 that is fully characterized by mass spectrometry, heteronuclear and Cross-Polarization Magic-Angle Spinning (CP-MAS) NMR-, infrared (IR), UV-vis, and X-ray photoelectron (XP) spectroscopies, single-crystal X-Ray diffraction (sc-XRD), mass spectrometry, and cyclovoltammetry (CV). This coordinatively unsaturated 104-electron Pd(0) cluster features a cubic Pd8-core, µ4-capping phosphinidene ligands, and is air-stable. Quantum chemical calculations provide insight to the cluster's electronic structure and suggest 5s/4d orbital mixing as well as minor Pd─P covalency. Trapping experiments reveal that cluster growth proceeds via insertion of Pd(0) into the triphosphirane. The unsaturated cluster senses ethylene and binds isocyanides, which triggers the rearrangement to a tetrahedral structure with a reduced frontier orbital energy gap. These experiments demonstrate facile cluster manipulation and highlight non-destructive cluster rearrangement as is required for supramolecular assembly.
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Affiliation(s)
- Kevin Breitwieser
- Coordination Chemistry Saarland UniversityCampus C4.1D‐66123SaarbrückenGermany
| | - Matteo Bevilacqua
- Coordination Chemistry Saarland UniversityCampus C4.1D‐66123SaarbrückenGermany
- Dipartimento di Scienze ChimicheUniversità degli Studi di Padovavia Marzolo 1PadovaI‐35131Italy
| | - Sneha Mullassery
- Coordination Chemistry Saarland UniversityCampus C4.1D‐66123SaarbrückenGermany
| | - Fabian Dankert
- Coordination Chemistry Saarland UniversityCampus C4.1D‐66123SaarbrückenGermany
| | - Bernd Morgenstern
- Coordination Chemistry Saarland UniversityCampus C4.1D‐66123SaarbrückenGermany
| | - Samuel Grandthyll
- Experimental Physics and Center for BiophysicsSaarland UniversityCampus E2.9D‐66123SaarbrückenGermany
| | - Frank Müller
- Experimental Physics and Center for BiophysicsSaarland UniversityCampus E2.9D‐66123SaarbrückenGermany
| | - Andrea Biffis
- Dipartimento di Scienze ChimicheUniversità degli Studi di Padovavia Marzolo 1PadovaI‐35131Italy
| | - Christian Hering‐Junghans
- Katalyse mit phosphorhaltigen MaterialienLeibniz Institut für Katalyse e.VAlbert‐Einstein‐Straße 29aD‐18059RostockGermany
| | - Dominik Munz
- Coordination Chemistry Saarland UniversityCampus C4.1D‐66123SaarbrückenGermany
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6
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Shi J, Yang F, Zhao X, Ren X, Tang Y, Li S. Spin-polarized p-block antimony/bismuth single-atom catalysts on defect-free rutile TiO 2(110) substrate for highly efficient CO oxidation. Phys Chem Chem Phys 2024; 26:16459-16465. [PMID: 38832399 DOI: 10.1039/d4cp00352g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Developing high-loading spin-polarized p-block-element-based single-atom catalysts (p-SACs) upon defect-free substrates for various chemical reactions wherein spin selection matters is generally considered a formidable challenge because of the difficulty of creating high densities of underpinning stable defects and the delocalized electronic features of p-block elements. Here our first-principles calculations establish that the defect-free rutile TiO2(110) wide-bandgap semiconducting anchoring support can stabilize and localize the wavefunctions of p-block metal elements (Sb and Bi) via strong ionic bonding, forming spin-polarized p-SACs. Cooperated by the underlying d-block Ti atoms via a delicate spin donation-back-donation mechanism, the p-block single-atom reactive center Sb(Bi) exhibits excellent catalysis for spin-triplet O2 activation and CO oxidation in alignment with Wigner's spin selection rule, with a low rate-limiting reaction barrier of ∼0.6 eV. This work is crucial in establishing high-loading reactive centers of high-performance p-SACs for various important physical processes and chemical reactions, especially wherein the spin degree of freedom matters, i.e., spin catalysis.
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Affiliation(s)
- Jinlei Shi
- College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou 450044, China.
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Fengyuan Yang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Xingju Zhao
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Xiaoyan Ren
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Yanan Tang
- College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou 450044, China.
| | - Shunfang Li
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China.
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7
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Sitja G, Henry CR. A molecular beam study of CO oxidation on Pd clusters supported on alumina: the effect of cluster size. Phys Chem Chem Phys 2024; 26:15338-15343. [PMID: 38753220 DOI: 10.1039/d4cp01030b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The activity in CO oxidation of regular arrays of Pd clusters, in the size range of 5-180 atoms, supported on alumina has been studied by using a molecular beam method. The Pd clusters are grown on a nanostructured ultrathin alumina film on Ni3Al(111) providing a hexagonal array of clusters with a narrow size distribution. The steady state turnover frequency (TOF) is measured as a function of the mean cluster size. On average the TOF increases with size. Below about 20 atoms, the TOF increases rapidly and for larger clusters it grows slowly and reaches a value close to those obtained on bulk single crystals at 180 atoms. The size effect is explained by the smaller activity of Pd atoms in contact with the alumina support.
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Affiliation(s)
- Georges Sitja
- CNRS, CINaM, Aix-Marseille Univsersité, F-13288 Marseille, France.
| | - Claude R Henry
- CNRS, CINaM, Aix-Marseille Univsersité, F-13288 Marseille, France.
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8
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Luo Z, Shehzad A. Advances in Naked Metal Clusters for Catalysis. Chemphyschem 2024; 25:e202300715. [PMID: 38450926 DOI: 10.1002/cphc.202300715] [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: 09/30/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/08/2024]
Abstract
The properties of sub-nano metal clusters are governed by quantum confinement and their large surface-to-bulk ratios, atomically precise compositions and geometric/electronic structures. Advances in metal clusters lead to new opportunities in diverse aspects of sciences including chemo-sensing, bio-imaging, photochemistry, and catalysis. Naked metal clusters having synergic multiple active sites and coordinative unsaturation and tunable stability/activity enable researchers to design atomically precise metal catalysts with tailored catalysis for different reactions. Here we summarize the progress of ligand-free naked metal clusters for catalytic applications. It is anticipated that this review helps to better understand the chemistry of small metal clusters and facilitates the design and development of new catalysts for potential applications.
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Affiliation(s)
- Zhixun Luo
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Aamir Shehzad
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, China
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9
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Ye Z, Lu P, Chen Y, Xu Z, Huang H, Zhi M, Chen ZA, Yan B. Synthesis and photocatalytic property of Au-TiO 2 nanocomposites with controlled morphologies in microfluidic chips. LAB ON A CHIP 2024; 24:2253-2261. [PMID: 38483182 DOI: 10.1039/d3lc01053h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
We present an efficient approach for the consecutive synthesis of Au-TiO2 nanocomposites with controlled morphologies in a microfluidic chip. The seed-mediated growth method was employed to synthesize Au nanorods as the core, and TiO2 layers of varying thicknesses were deposited on the surface or tip of the Au nanorods. Au-TiO2 nanocomposites with core-shell, dumbbell, and dandelion-like structures can be precisely synthesized in a one-step manner within the microfluidic chip by finely tuning the flow rate of NaHCO3 and the amount of hexadecyl trimethyl ammonium bromide. Furthermore, we have investigated the photocatalytic activity of the synthesized nanocomposites, and it was found that Au NR-TiO2 core-shell nanostructure with a thin TiO2 shell exhibits superior catalytic performance. This work provides an effective and controlled method for the microscale preparation and photocatalytic application of various Au-TiO2 nanocomposite structures.
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Affiliation(s)
- Ziran Ye
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou, China.
- Center for Optics & Optoelectronics Research (COOR), Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou, China
| | - Ping Lu
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou, China.
| | - Yiben Chen
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou, China.
| | - Zhixian Xu
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou, China.
| | - Haixia Huang
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou, China.
| | - Mingjia Zhi
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Zi Ang Chen
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, China
| | - Bo Yan
- Department of Applied Physics, College of Science, Zhejiang University of Technology, Hangzhou, China.
- Center for Optics & Optoelectronics Research (COOR), Collaborative Innovation Center for Information Technology in Biological and Medical Physics, College of Science, Zhejiang University of Technology, Hangzhou, China
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10
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Li Z, Lu X, Guo C, Ji S, Liu H, Guo C, Lu X, Wang C, Yan W, Liu B, Wu W, Horton JH, Xin S, Wang Y. Solvent-free selective hydrogenation of nitroaromatics to azoxy compounds over Co single atoms decorated on Nb 2O 5 nanomeshes. Nat Commun 2024; 15:3195. [PMID: 38609380 PMCID: PMC11015025 DOI: 10.1038/s41467-024-47402-5] [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: 08/05/2023] [Accepted: 04/01/2024] [Indexed: 04/14/2024] Open
Abstract
The solvent-free selective hydrogenation of nitroaromatics to azoxy compounds is highly important, yet challenging. Herein, we report an efficient strategy to construct individually dispersed Co atoms decorated on niobium pentaoxide nanomeshes with unique geometric and electronic properties. The use of this supported Co single atom catalysts in the selective hydrogenation of nitrobenzene to azoxybenzene results in high catalytic activity and selectivity, with 99% selectivity and 99% conversion within 0.5 h. Remarkably, it delivers an exceptionally high turnover frequency of 40377 h-1, which is amongst similar state-of-the-art catalysts. In addition, it demonstrates remarkable recyclability, reaction scalability, and wide substrate scope. Density functional theory calculations reveal that the catalytic activity and selectivity are significantly promoted by the unique electronic properties and strong electronic metal-support interaction in Co1/Nb2O5. The absence of precious metals, toxic solvents, and reagents makes this catalyst more appealing for synthesizing azoxy compounds from nitroaromatics. Our findings suggest the great potential of this strategy to access single atom catalysts with boosted activity and selectivity, thus offering blueprints for the design of nanomaterials for organocatalysis.
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Affiliation(s)
- Zhijun Li
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China.
| | - Xiaowen Lu
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
| | - Cong Guo
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, PR China
| | - Siqi Ji
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
| | - Hongxue Liu
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
| | - Chunmin Guo
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
| | - Xue Lu
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
| | - Chao Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, PR China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, PR China
| | - Bingyu Liu
- National Center for International Research on Catalytic Technology, School of Chemistry and Material Sciences, Heilongjiang University, Harbin, PR China
| | - Wei Wu
- National Center for International Research on Catalytic Technology, School of Chemistry and Material Sciences, Heilongjiang University, Harbin, PR China
| | - J Hugh Horton
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
- Department of Chemistry, Queen's University, Kingston, Canada
| | - Shixuan Xin
- National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China
| | - Yu Wang
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, PR China.
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Pei C, Chen S, Fu D, Zhao ZJ, Gong J. Structured Catalysts and Catalytic Processes: Transport and Reaction Perspectives. Chem Rev 2024; 124:2955-3012. [PMID: 38478971 DOI: 10.1021/acs.chemrev.3c00081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
The structure of catalysts determines the performance of catalytic processes. Intrinsically, the electronic and geometric structures influence the interaction between active species and the surface of the catalyst, which subsequently regulates the adsorption, reaction, and desorption behaviors. In recent decades, the development of catalysts with complex structures, including bulk, interfacial, encapsulated, and atomically dispersed structures, can potentially affect the electronic and geometric structures of catalysts and lead to further control of the transport and reaction of molecules. This review describes comprehensive understandings on the influence of electronic and geometric properties and complex catalyst structures on the performance of relevant heterogeneous catalytic processes, especially for the transport and reaction over structured catalysts for the conversions of light alkanes and small molecules. The recent research progress of the electronic and geometric properties over the active sites, specifically for theoretical descriptors developed in the recent decades, is discussed at the atomic level. The designs and properties of catalysts with specific structures are summarized. The transport phenomena and reactions over structured catalysts for the conversions of light alkanes and small molecules are analyzed. At the end of this review, we present our perspectives on the challenges for the further development of structured catalysts and heterogeneous catalytic processes.
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Affiliation(s)
- Chunlei Pei
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Sai Chen
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Donglong Fu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Zhi-Jian Zhao
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Jinlong Gong
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- National Industry-Education Platform of Energy Storage, Tianjin University, 135 Yaguan Road, Tianjin 300350, China
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12
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Liang S, Dong C, Zhou C, Wang R, Huang F. Ion-Sieve-Confined Synthesis of Size-Tunable Ru for Electrochemical Hydrogen Evolution. NANO LETTERS 2024; 24:757-763. [PMID: 38166149 DOI: 10.1021/acs.nanolett.3c04419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The controllable and low-cost synthesis of nanometal particles is highly desired in scientific and industrial research. Herein, size-tunable Ru nanoparticles were synthesized by using a novel ion-sieve-confined reduction method. The H2TiO3 ion-sieve was used to adsorb Ru3+ into the hydroxyl-enriched porous [TiO3]2- layers. The confined environment of the interlayer space facilitates Ru-Ru collision and bonding during annealing, achieving a precise reduction from Ru3+ to Ru0 without additional reductants. Owing to the confinement effect, Ru0 nanoparticles are uniformly embedded in the pores on the surface of the postannealed TiO2 matrix (Ru@TiO2). Ru@TiO2 exhibited a lower overpotential than Pt/C (57 vs 87 mV at 10 mA cm-2) for the HER in 0.1 M KOH solution. The confinement-induced reduction of metal ions was also preliminarily proved in ion-exchanged zeolites, which provides facile and abundant approaches for the size-controllable synthesis of nanometal catalysts with high catalytic activity.
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Affiliation(s)
- Song Liang
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Chenlong Dong
- Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Ce Zhou
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Ruiqi Wang
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
| | - Fuqiang Huang
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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13
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Wu W, Pavloudis T, Palmer RE. Core atoms escape from the shell: reverse segregation of Pb-Al core-shell nanoclusters via nanoscale melting. DISCOVER NANO 2023; 18:143. [PMID: 37975964 PMCID: PMC10656412 DOI: 10.1186/s11671-023-03924-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/13/2023] [Indexed: 11/19/2023]
Abstract
Melting is a phase transition that profoundly affects the fabrication and diverse applications of metal nanoclusters. Core-shell clusters offer distinctive properties and thus opportunities compared with other classes of nano-alloys. Molecular dynamics simulations have been employed to investigate the melting behaviour of Pb-Al core-shell clusters containing a fixed Pb147 core and varying shell thickness. Our results show that the core and shell melt separately. Surprisingly, core melting always drives the core Pb atoms to break out the shell and coat the nanoclusters in a reversed segregation process at the nanoscale. The melting point of the core increases with the shell thickness to exceed that of the bare core cluster, but the thinnest shell always supresses the core melting point. These results can be a reference for the future fabrication, manipulation, and exploitation of the core-shell nanoalloys chosen. The system chosen is ideally suited for experimental observations.
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Affiliation(s)
- Wenkai Wu
- Nanomaterials Lab, Mechanical Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, UK
| | - Theodoros Pavloudis
- Nanomaterials Lab, Mechanical Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, UK
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Richard E Palmer
- Nanomaterials Lab, Mechanical Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, UK.
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14
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Li X, Mitchell S, Fang Y, Li J, Perez-Ramirez J, Lu J. Advances in heterogeneous single-cluster catalysis. Nat Rev Chem 2023; 7:754-767. [PMID: 37814032 DOI: 10.1038/s41570-023-00540-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2023] [Indexed: 10/11/2023]
Abstract
Heterogeneous single-cluster catalysts (SCCs) comprising atomically precise and isolated metal clusters stabilized on appropriately chosen supports offer exciting prospects for enabling novel chemical reactions owing to their broad structural diversity with unparalled opportunities for engineering their properties. Although the pioneering work revealed intriguing performance trends of size-selected metal clusters deposited on supports, synthetic and analytical challenges hindered a thorough understanding of surface chemistry under realistic conditions. This Review underscores the importance of considering the cluster environment in SCCs, encompassing the development of robust metal-support interactions, precise control over the ligand sphere, the influence of reaction media and dynamic behaviour, to uncover new reactivities. Through examples, we illustrate the criticality of tailoring the entire catalytic ensemble in SCCs to achieve stable and selective performance with practically relevant metal coverages. This expansion in application scope transcends from model reactions to complex and technically relevant reactions. Furthermore, we provide a perspective on the opportunities and future directions for SCC design within this rapidly evolving field.
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Affiliation(s)
- Xinzhe Li
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Sharon Mitchell
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Yiyun Fang
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Jun Li
- Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing, China.
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, China.
| | - Javier Perez-Ramirez
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.
| | - Jiong Lu
- Department of Chemistry, National University of Singapore, Singapore, Singapore.
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15
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Yan J, Xiao W, Zeng R, Zhao Z, Li X, Wang L. Local environmental engineering for highly stable single-atom Pt 1/CeO 2catalysts: first-principles insights. NANOTECHNOLOGY 2023; 34:505403. [PMID: 37789667 DOI: 10.1088/1361-6528/acf3f2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/25/2023] [Indexed: 10/05/2023]
Abstract
Single-atom Pt1/CeO2catalysts may cope with the high cost and durability issues of fuel cell electrocatalysts. In the present study, the stability and underlying interaction mechanisms of the Pt1/CeO2system are systematically investigated using first-principles calculations. The Pt adsorption energy on CeO2surfaces can be divided into chemical interaction and surface deformation parts. The interaction energy, mainly associated with the local chemical environment, i.e. the number of Pt-O bonds, plays a major role in Pt1/CeO2stability. When forming a Pt-4O configuration, the catalytic system has the highest stability and Pt is oxidized to Pt2+. An electronic metal-support interaction mechanism is proposed for understanding Pt1/CeO2stability. In addition, our calculations show that the Pt1/CeO2(100) system is dynamically stable, and the external O environment can promote the further oxidation of Pt to Ptn+(2 ≤n< 4). The present study provides useful guidance for the experimental development of highly stable and efficient electrocatalysts for fuel cell applications.
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Affiliation(s)
- Jiasi Yan
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Wei Xiao
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
| | - Rong Zeng
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
| | - Zheng Zhao
- National Engineering Research Center for Rare Earth, GRINM Group Corporation Limited, Beijing 100088, People's Republic of China
| | - Xiaowu Li
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, People's Republic of China
| | - Ligen Wang
- State Key Laboratory of Nonferrous Metals and Processes & National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, China GRINM Group Co., Ltd, Beijing 100088, People's Republic of China
- GRIMAT Engineering Institute Co., Ltd, Beijing 101407, People's Republic of China
- General Research Institute for Nonferrous Metals, Beijing 100088, People's Republic of China
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16
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Pan J, Li XE, Zhu Y, Zhou J, Zhu Z, Li C, Liu X, Liang X, Yang Z, Chen Q, Ren P, Wen XD, Zhou X, Wu K. Clustering-Evolved Frontier Orbital for Low-Temperature CO 2 Dissociation. J Am Chem Soc 2023; 145:18748-18752. [PMID: 37606281 DOI: 10.1021/jacs.3c06845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
In this study, single Ni2 clusters (two Ni atoms bridged by a lattice oxygen) are successfully synthesized on monolayered CuO. They exhibit a remarkable activity toward low-temperature CO2 thermal dissociation, in contrast to cationic Ni atoms that nondissociatively adsorb CO2 and metallic Ni ones that are chemically inert for CO2 adsorption. Density functional theory calculations reveal that the Ni2 clusters can significantly alter the spatial symmetry of their unoccupied frontier orbitals to match the occupied counterpart of the CO2 molecule and enable its low-temperature dissociation. This study may help advance single-cluster catalysis and exploit the unexcavated mechanism for low-temperature CO2 activation.
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Affiliation(s)
- Jinliang Pan
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiu-E Li
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Beijing 101400, China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Yifan Zhu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Junyi Zhou
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhen Zhu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Changlin Li
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xianzheng Liu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaoyang Liang
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zengxu Yang
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qiwei Chen
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Pengju Ren
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Beijing 101400, China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Xiao-Dong Wen
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Beijing 101400, China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Xiong Zhou
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Kai Wu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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17
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Wang Y, Qin S, Denisov N, Kim H, Bad'ura Z, Sarma BB, Schmuki P. Reactive Deposition Versus Strong Electrostatic Adsorption (SEA): A Key to Highly Active Single Atom Co-Catalysts in Photocatalytic H 2 Generation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211814. [PMID: 37256585 DOI: 10.1002/adma.202211814] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 05/05/2023] [Indexed: 06/01/2023]
Abstract
In recent years, the use of single atoms (SAs) has become of a rapidly increasing significance in photocatalytic H2 generation; here SA noble metals (mainly Pt SAs) can act as highly effective co-catalysts. The classic strategy to decorate oxide semiconductor surfaces with maximally dispersed SAs relies on "strong electrostatic adsorption" (SEA) of suitable noble metal complexes. In the case of TiO2 - the classic benchmark photocatalyst - SEA calls for adsorption of cationic Pt complexes such as [(NH3 )4 Pt]2+ which then are thermally reacted to surface-bound SAs. While SEA is widely used in literature, in the present work it is shown by a direct comparison that reactive attachment based on the reductive anchoring of SAs, e.g., from hexachloroplatinic(IV) acid (H2 PtCl6 ) leads directly to SAs in a configuration with a significantly higher specific activity than SAs deposited with SEA - and this at a significantly lower Pt loading and without any thermal post-deposition treatments. Overall, the work demonstrates that the reactive deposition strategy is superior to the classic SEA concept as it provides a direct electronically well-connected SA-anchoring and thus leads to highly active single-atom sites in photocatalysis.
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Affiliation(s)
- Yue Wang
- Department of Materials Science and Engineering, Chair for Surface Science and Corrosion (WW4-LKO), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Shanshan Qin
- Department of Materials Science and Engineering, Chair for Surface Science and Corrosion (WW4-LKO), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Nikita Denisov
- Department of Materials Science and Engineering, Chair for Surface Science and Corrosion (WW4-LKO), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Hyesung Kim
- Department of Materials Science and Engineering, Chair for Surface Science and Corrosion (WW4-LKO), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Zdeněk Bad'ura
- Regional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc, 78371, Czech Republic
| | - Bidyut Bikash Sarma
- Institute of Catalysis Research and Technology and Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, 76131, Karlsruhe, Germany
| | - Patrik Schmuki
- Department of Materials Science and Engineering, Chair for Surface Science and Corrosion (WW4-LKO), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, 91058, Erlangen, Germany
- Regional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc, 78371, Czech Republic
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18
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Liu C, Lin L, Wu H, Liu Y, Mu R, Fu Q. Activating lattice oxygen of single-layer ZnO for the catalytic oxidation reaction. Phys Chem Chem Phys 2023; 25:20121-20127. [PMID: 37462941 DOI: 10.1039/d3cp02580b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Tuning an oxide/metal interface is of critical importance for the performance enhancement of many heterogeneous catalytic reactions. However, catalytic oxidation occurring at the interface between non-reducible oxide and metal has been challenging, since non-reducible oxides hardly lose their lattice oxygen (OL) or dissociate O2 from the gas phase. In this work, a ZnO monolayer film on Au(111) is used as an inverse catalyst to investigate CO oxidation occurring at the ZnO/Au(111) interface via high pressure scanning tunneling microscopy. Surface science experiments indicate that oxygen intercalation under the ZnO monolayer film, termed ZnO/O/Au(111), can be achieved via a surface reaction with 1 × 10-6 mbar O3. Subsequent exposure of the formed ZnO/O/Au(111) surface to mbar CO at room temperature leads to the recovery of the pristine ZnO/Au(111) surface. Theoretical calculations reveal that OL adjacent to intercalated oxygen (Oint) is activated due to the OL-Zn-Oint bonding and surface corrugation, which can be directly involved in CO oxidation. Subsequently, Oint migrates to the formed oxygen vacancy from the subsurface resuming the pristine ZnO structure. These results thus reveal that oxygen intercalation underneath single-layer ZnO will strongly boost the oxidation reaction via activating adjacent lattice oxygen atoms.
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Affiliation(s)
- Changping Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Le Lin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Hao Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Yijing Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rentao Mu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Qiang Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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19
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Muravev V, Parastaev A, van den Bosch Y, Ligt B, Claes N, Bals S, Kosinov N, Hensen EJM. Size of cerium dioxide support nanocrystals dictates reactivity of highly dispersed palladium catalysts. Science 2023; 380:1174-1179. [PMID: 37319196 DOI: 10.1126/science.adf9082] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 05/15/2023] [Indexed: 06/17/2023]
Abstract
The catalytic performance of heterogeneous catalysts can be tuned by modulation of the size and structure of supported transition metals, which are typically regarded as the active sites. In single-atom metal catalysts, the support itself can strongly affect the catalytic properties. Here, we demonstrate that the size of cerium dioxide (CeO2) support governs the reactivity of atomically dispersed palladium (Pd) in carbon monoxide (CO) oxidation. Catalysts with small CeO2 nanocrystals (~4 nanometers) exhibit unusually high activity in a CO-rich reaction feed, whereas catalysts with medium-size CeO2 (~8 nanometers) are preferred for lean conditions. Detailed spectroscopic investigations reveal support size-dependent redox properties of the Pd-CeO2 interface.
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Affiliation(s)
- Valery Muravev
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
| | - Alexander Parastaev
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
| | - Yannis van den Bosch
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
| | - Bianca Ligt
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
| | - Nathalie Claes
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium
| | - Sara Bals
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium
| | - Nikolay Kosinov
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
| | - Emiel J M Hensen
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands
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20
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Chen J, Xiong S, Liu H, Shi J, Mi J, Liu H, Gong Z, Oliviero L, Maugé F, Li J. Reverse oxygen spillover triggered by CO adsorption on Sn-doped Pt/TiO 2 for low-temperature CO oxidation. Nat Commun 2023; 14:3477. [PMID: 37311800 DOI: 10.1038/s41467-023-39226-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/02/2023] [Indexed: 06/15/2023] Open
Abstract
The spillover of oxygen species is fundamentally important in redox reactions, but the spillover mechanism has been less understood compared to that of hydrogen spillover. Herein Sn is doped into TiO2 to activate low-temperature (<100 °C) reverse oxygen spillover in Pt/TiO2 catalyst, leading to CO oxidation activity much higher than that of most oxide-supported Pt catalysts. A combination of near-ambient-pressure X-ray photoelectron spectroscopy, in situ Raman/Infrared spectroscopies, and ab initio molecular dynamics simulations reveal that the reverse oxygen spillover is triggered by CO adsorption at Pt2+ sites, followed by bond cleavage of Ti-O-Sn moieties nearby and the appearance of Pt4+ species. The O in the catalytically indispensable Pt-O species is energetically more favourable to be originated from Ti-O-Sn. This work clearly depicts the interfacial chemistry of reverse oxygen spillover that is triggered by CO adsorption, and the understanding is helpful for the design of platinum/titania catalysts suitable for reactions of various reactants.
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Affiliation(s)
- Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Shangchao Xiong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China.
| | - Haiyan Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Jianqiang Shi
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Jinxing Mi
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Hao Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China
| | - Laetitia Oliviero
- Laboratoire Catalyse et Spectrochimie, ENSICAEN, Université de Caen, CNRS, 6 bd du Maréchal Juin, 14050, Caen, France
| | - Françoise Maugé
- Laboratoire Catalyse et Spectrochimie, ENSICAEN, Université de Caen, CNRS, 6 bd du Maréchal Juin, 14050, Caen, France
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China.
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21
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Zhao Z, Wu Y, Ran W, Zhao H, Yu X, Sun JF, He G, Liu J, Liu R, Jiang G. AuFe 3@Pd/γ-Fe 2O 3 Nanosheets as an In Situ Regenerable and Highly Efficient Hydrogenation Catalyst. ACS NANO 2023; 17:8499-8510. [PMID: 37074122 DOI: 10.1021/acsnano.3c00745] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Heterogenous Pd catalysts play a pivotal role in the chemical industry; however, it is plagued by S2- or other strong adsorbates inducing surface poisoning long term. Herein, we report the development of AuFe3@Pd/γ-Fe2O3 nanosheets (NSs) as an in situ regenerable and highly active hydrogenation catalyst. Upon poisoning, the Pd monolayer sites could be fully and oxidatively regenerated under ambient conditions, which is initiated by •OH radicals from surface defect/FeTetra vacancy-rich γ-Fe2O3 NSs via the Fenton-like pathway. Both experimental and theoretical analyses demonstrate that for the electronic and geometric effect, the 2-3 nm AuFe3 intermetallic nanocluster core promotes the adsorption of reactant onto Pd sites; in addition, it lowers Pd's affinity for •OH radicals to enhance their stability during oxidative regeneration. When packed into a quartz sand fixed-bed catalyst column, the AuFe3@Pd/γ-Fe2O3 NSs are highly active in hydrogenating the carbon-halogen bond, which comprises a crucial step for the removal of micropollutants in drinking water and recovery of resources from heavily polluted wastewater, and withstand ten rounds of regeneration. By maximizing the use of ultrathin metal oxide NSs and intermetallic nanocluster and monolayer Pd, the current study demonstrates a comprehensive strategy for developing sustainable Pd catalysts for liquid catalysis.
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Affiliation(s)
- Zongshan Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yanhen Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Wei Ran
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Huachao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaotian Yu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
| | - Jie-Fang Sun
- Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Guangzhi He
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
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22
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Xu L, Papanikolaou KG, Lechner BAJ, Je L, Somorjai GA, Salmeron M, Mavrikakis M. Formation of active sites on transition metals through reaction-driven migration of surface atoms. Science 2023; 380:70-76. [PMID: 37023183 DOI: 10.1126/science.add0089] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Adopting low-index single-crystal surfaces as models for metal nanoparticle catalysts has been questioned by the experimental findings of adsorbate-induced formation of subnanometer clusters on several single-crystal surfaces. We used density functional theory calculations to elucidate the conditions that lead to cluster formation and show how adatom formation energies enable efficient screening of the conditions required for adsorbate-induced cluster formation. We studied a combination of eight face-centered cubic transition metals and 18 common surface intermediates and identified systems relevant to catalytic reactions, such as carbon monoxide (CO) oxidation and ammonia (NH3) oxidation. We used kinetic Monte Carlo simulations to elucidate the CO-induced cluster formation process on a copper surface. Scanning tunneling microscopy of CO on a nickel (111) surface that contains steps and dislocations points to the structure sensitivity of this phenomenon. Metal-metal bond breaking that leads to the evolution of catalyst structures under realistic reaction conditions occurs much more broadly than previously thought.
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Affiliation(s)
- Lang Xu
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | | | - Barbara A J Lechner
- Department of Chemistry and Catalysis Research Center, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany
- Division of Materials Science, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Lisa Je
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Gabor A Somorjai
- Division of Materials Science, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Miquel Salmeron
- Division of Materials Science, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
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23
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Perco D, Loi F, Bignardi L, Sbuelz L, Lacovig P, Tosi E, Lizzit S, Kartouzian A, Heiz U, Baraldi A. The highest oxidation state observed in graphene-supported sub-nanometer iron oxide clusters. Commun Chem 2023; 6:61. [PMID: 37012362 PMCID: PMC10070315 DOI: 10.1038/s42004-023-00865-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 03/24/2023] [Indexed: 04/05/2023] Open
Abstract
Size-selected iron oxide nanoclusters are outstanding candidates for technological-oriented applications due to their high efficiency-to-cost ratio. However, despite many theoretical studies, experimental works on their oxidation mechanism are still limited to gas-phase clusters. Herein we investigate the oxidation of graphene-supported size-selected Fen clusters by means of high-resolution X-ray Photoelectron Spectroscopy. We show a dependency of the core electron Fe 2p3/2 binding energy of metallic and oxidized clusters on the cluster size. Binding energies are also linked to chemical reactivity through the asymmetry parameter which is related to electron density of states at the Fermi energy. Upon oxidation, iron atoms in clusters reach the oxidation state Fe(II) and the absence of other oxidation states indicates a Fe-to-O ratio close to 1:1, in agreement with previous theoretical calculations and gas-phase experiments. Such knowledge can provide a basis for a better understanding of the behavior of iron oxide nanoclusters as supported catalysts.
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Affiliation(s)
- Deborah Perco
- Department of Physics, University of Trieste, Via Valerio 2, 34127, Trieste, Italy
| | - Federico Loi
- Department of Physics, University of Trieste, Via Valerio 2, 34127, Trieste, Italy
| | - Luca Bignardi
- Department of Physics, University of Trieste, Via Valerio 2, 34127, Trieste, Italy
| | - Luca Sbuelz
- Department of Physics, University of Trieste, Via Valerio 2, 34127, Trieste, Italy
| | - Paolo Lacovig
- Elettra - Sincrotrone Trieste, AREA Science Park, 34149, Trieste, Italy
| | - Ezequiel Tosi
- Elettra - Sincrotrone Trieste, AREA Science Park, 34149, Trieste, Italy
| | - Silvano Lizzit
- Elettra - Sincrotrone Trieste, AREA Science Park, 34149, Trieste, Italy
| | - Aras Kartouzian
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Ueli Heiz
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Alessandro Baraldi
- Department of Physics, University of Trieste, Via Valerio 2, 34127, Trieste, Italy.
- Elettra - Sincrotrone Trieste, AREA Science Park, 34149, Trieste, Italy.
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24
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Mass spectrometry in materials synthesis. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.117010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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25
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Din NU, Le D, Rahman TS. Computational screening of chemically active metal center in coordinated dipyridyl tetrazine network. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:154001. [PMID: 36799354 DOI: 10.1088/1361-648x/acb8f3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Creation, stabilization, characterization, and control of single transition metal (TM) atoms may lead to significant advancement of the next-generation catalyst. Metal organic network (MON) in which single TM atoms are coordinated and separated by organic ligands is a promising class of material that may serve as a single atom catalyst. Our density functional theory-based calculations of MONs in which dipyridyl tetrazine (DPTZ) ligands coordinate with a TM atom to form linear chains leads to two types of geometries of the chains. Those with V, Cr, Mo, Fe, Co, Pt, or Pd atoms at the coordination center are planar while those with Au, Ag, Cu, or Ni are non-planar. The formation energies of the chains are high (∼2.0-7.9 eV), suggesting that these MON can be stabilized. Moreover, the calculated adsorption energies of CO and O2on the metal atom at center of the chains with the planar configuration lie in the range 1.0-3.0 eV for V, Cr, Mo, Fe, and Co at the coordination center, paving the way for future studies of CO oxidation on TM-DPTZ chains with the above five atoms at the coordination center.
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Affiliation(s)
- Naseem Ud Din
- Department of Physics, University of Central Florida, Orlando, FL, 32816, United States of America
| | - Duy Le
- Department of Physics, University of Central Florida, Orlando, FL, 32816, United States of America
| | - Talat S Rahman
- Department of Physics, University of Central Florida, Orlando, FL, 32816, United States of America
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26
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Jašík J, Valtera S, Vaidulych M, Bunian M, Lei Y, Halder A, Tarábková H, Jindra M, Kavan L, Frank O, Bartling S, Vajda Š. Oxidative dehydrogenation of cyclohexene on atomically precise subnanometer Cu 4-nPd n (0 ≤ n ≤ 4) tetramer clusters: the effect of cluster composition and support on performance. Faraday Discuss 2023; 242:70-93. [PMID: 36214279 DOI: 10.1039/d2fd00108j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The pronounced effects of the composition of four-atom monometallic Cu and Pd and bimetallic CuPd clusters and the support on the catalytic activity and selectivity in the oxidative dehydrogenation of cyclohexene are reported. The ultra-nanocrystalline diamond supported clusters are highly active and dominantly produce benzene; some of the mixed clusters also produce cyclohexadiene, which are all clusters with a much suppressed combustion channel. The also highly active TiO2-supported tetramers solely produce benzene, without any combustion to CO2. The selectivity of the zirconia-supported mixed CuPd clusters and the monometallic Cu cluster is entirely different; though they are less active in comparison to clusters with other supports, these clusters produce significant fractions of cyclohexadiene, with their selectivity towards cyclohexadiene gradually increasing with the increasing number of copper atoms in the cluster, reaching about 50% for Cu3Pd1. The zirconia-supported copper tetramer stands out from among all the other tetramers in this reaction, with a selectivity towards cyclohexadiene of 70%, which far exceeds those of all the other cluster-support combinations. The findings from this study indicate a positive effect of copper on the stability of the mixed tetramers and potential new ways of fine-tuning catalyst performance by controlling the composition of the active site and via cluster-support interactions in complex oxidative reactions under the suppression of the undesired combustion of the feed.
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Affiliation(s)
- Juraj Jašík
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Stanislav Valtera
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Mykhailo Vaidulych
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
| | - Muntaseer Bunian
- Department of Chemical and Materials Engineering, The University of Alabama in Huntsville, Huntsville, Alabama 35899, USA
| | - Yu Lei
- Department of Chemical and Materials Engineering, The University of Alabama in Huntsville, Huntsville, Alabama 35899, USA
| | - Avik Halder
- Materials Science Division, Argonne National Laboratory, 9600 South Cass Avenue, Lemont, Illinois 60439, USA
| | - Hana Tarábková
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Martin Jindra
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.,Department of Physical Chemistry, University of Chemistry and Technology in Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Ladislav Kavan
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Otakar Frank
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Stephan Bartling
- Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Štefan Vajda
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic.
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27
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Tang R, Wang H, Dong X, Zhang S, Zhang L, Dong F. A ball milling method for highly dispersed Ni atoms on g-C3N4 to boost CO2 photoreduction. J Colloid Interface Sci 2023; 630:290-300. [DOI: 10.1016/j.jcis.2022.10.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
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28
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Atom hybridization of metallic elements: Emergence of subnano metallurgy for the post-nanotechnology. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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29
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Jing W, Shen H, Qin R, Wu Q, Liu K, Zheng N. Surface and Interface Coordination Chemistry Learned from Model Heterogeneous Metal Nanocatalysts: From Atomically Dispersed Catalysts to Atomically Precise Clusters. Chem Rev 2022; 123:5948-6002. [PMID: 36574336 DOI: 10.1021/acs.chemrev.2c00569] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The surface and interface coordination structures of heterogeneous metal catalysts are crucial to their catalytic performance. However, the complicated surface and interface structures of heterogeneous catalysts make it challenging to identify the molecular-level structure of their active sites and thus precisely control their performance. To address this challenge, atomically dispersed metal catalysts (ADMCs) and ligand-protected atomically precise metal clusters (APMCs) have been emerging as two important classes of model heterogeneous catalysts in recent years, helping to build bridge between homogeneous and heterogeneous catalysis. This review illustrates how the surface and interface coordination chemistry of these two types of model catalysts determines the catalytic performance from multiple dimensions. The section of ADMCs starts with the local coordination structure of metal sites at the metal-support interface, and then focuses on the effects of coordinating atoms, including their basicity and hardness/softness. Studies are also summarized to discuss the cooperativity achieved by dual metal sites and remote effects. In the section of APMCs, the roles of surface ligands and supports in determining the catalytic activity, selectivity, and stability of APMCs are illustrated. Finally, some personal perspectives on the further development of surface coordination and interface chemistry for model heterogeneous metal catalysts are presented.
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Affiliation(s)
- Wentong Jing
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hui Shen
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ruixuan Qin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qingyuan Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
| | - Kunlong Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361102, China
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30
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Ye YL, Wang WL, Sun WM, Yang J. Polymeric tungsten carbide nanoclusters as potential non-noble metal catalysts for CO oxidation. NANOSCALE 2022; 14:18231-18240. [PMID: 36468662 DOI: 10.1039/d2nr06097c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The discovery of tungsten carbide (WC) as an analog of the noble metal Pt atom is of great significance toward designing novel highly-active catalysts from the viewpoint of the superatom concept. The potential of such a superatom to serve as building blocks of replacement catalysts for Pt has been evaluated in this work. The electronic properties, adsorption behaviors, and catalytic mechanisms towards the CO oxidation of (WC)n and Ptn (n = 1, 2, 4, and 6) were compared. Counterintuitively, these studied (WC)n clusters exhibit quite different electronic properties and adsorption behaviours from the corresponding Ptn species. For instance, (WC)n preferentially adsorbs O2, whereas Ptn tends to first combine with CO. Even so, it is interesting to find that the catalytic performances of (WC)n are always superior to the corresponding Ptn, and especially, the largest (WC)6 cluster exhibits the best catalytic ability towards CO oxidation. Therefore, assembling superatomic WC clusters into larger polymeric clusters can be regarded as a novel strategy to develop efficient superatom-assembled catalysts for CO oxidation. It is highly expected to see the realization of non-noble metal catalysts for various reactions in the near future experiments by using superatoms as building blocks.
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Affiliation(s)
- Ya-Ling Ye
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou 350108, People's Republic of China.
| | - Wen-Lu Wang
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou 350108, People's Republic of China.
| | - Wei-Ming Sun
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou 350108, People's Republic of China.
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
| | - Jinlong Yang
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
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31
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Song Z, Jiang W, Jian X, Hu F. Advanced Nanostructured Materials for Electrocatalysis in Lithium-Sulfur Batteries. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4341. [PMID: 36500964 PMCID: PMC9736453 DOI: 10.3390/nano12234341] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/25/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Lithium-sulfur (Li-S) batteries are considered as among the most promising electrochemical energy storage devices due to their high theoretical energy density and low cost. However, the inherently complex electrochemical mechanism in Li-S batteries leads to problems such as slow internal reaction kinetics and a severe shuttle effect, which seriously affect the practical application of batteries. Therefore, accelerating the internal electrochemical reactions of Li-S batteries is the key to realize their large-scale applications. This article reviews significant efforts to address the above problems, mainly the catalysis of electrochemical reactions by specific nanostructured materials. Through the rational design of homogeneous and heterogeneous catalysts (including but not limited to strategies such as single atoms, heterostructures, metal compounds, and small-molecule solvents), the chemical reactivity of Li-S batteries has been effectively improved. Here, the application of nanomaterials in the field of electrocatalysis for Li-S batteries is introduced in detail, and the advancement of nanostructures in Li-S batteries is emphasized.
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Affiliation(s)
- Zihui Song
- School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province), Key Laboratory of Energy Materials and Devices (Liaoning Province), Dalian University of Technology, Dalian 116024, China
| | - Wanyuan Jiang
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province), Key Laboratory of Energy Materials and Devices (Liaoning Province), Dalian University of Technology, Dalian 116024, China
| | - Xigao Jian
- School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province), Key Laboratory of Energy Materials and Devices (Liaoning Province), Dalian University of Technology, Dalian 116024, China
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province), Key Laboratory of Energy Materials and Devices (Liaoning Province), Dalian University of Technology, Dalian 116024, China
| | - Fangyuan Hu
- School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province), Key Laboratory of Energy Materials and Devices (Liaoning Province), Dalian University of Technology, Dalian 116024, China
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32
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Poths P, Hong Z, Li G, Anderson SL, Alexandrova AN. "Magic" Sinter-Resistant Cluster Sizes of Pt n Supported on Alumina. J Phys Chem Lett 2022; 13:11044-11050. [PMID: 36413781 DOI: 10.1021/acs.jpclett.2c03114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Subnano cluster catalysts, while highly promising due to unique activity, selectivity, and atom-efficiency, are limited in wider applications, as they are prone to deactivation via sintering. Even size-selection, which was previously shown to reduce sintering of nanoparticles, cannot reduce the sintering of highly fluxional subnano clusters due to their inherent isomeric diversity. Here, we use a combination of theory and experiment to show that Pt clusters on Al2O3 exhibit size-dependent sintering resistance. We furthermore show that Pt4/Al2O3 and Pt7/Al2O3 are "magic" sinter-resistant cluster sizes. Their stability is attributed to the greater degree of bulk-like crystallinity of the dominant isomers. In addition, we identify different spatial signatures characteristic of the sintering of clusters with differing sintering stabilities.
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Affiliation(s)
- Patricia Poths
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Zixiang Hong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Guangjing Li
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Scott L Anderson
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Anastassia N Alexandrova
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, Los Angeles, California 90095, United States
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33
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Swain S, Altaee A, Saxena M, Samal AK. A comprehensive study on heterogeneous single atom catalysis: Current progress, and challenges☆. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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34
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Progress and challenges in full spectrum photocatalysts: Mechanism and photocatalytic applications. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.11.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Wang L, Liu H, Zhuang J, Wang D. Small‐Scale Big Science: From Nano‐ to Atomically Dispersed Catalytic Materials. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202200036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Ligang Wang
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Huan Liu
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Jiahao Zhuang
- Department of Chemistry Tsinghua University Beijing 100084 China
| | - Dingsheng Wang
- Department of Chemistry Tsinghua University Beijing 100084 China
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36
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Matthews T, Mashola TA, Adegoke KA, Mugadza K, Fakude CT, Adegoke OR, Adekunle AS, Ndungu P, Maxakato NW. Electrocatalytic activity on single atoms catalysts: Synthesis strategies, characterization, classification, and energy conversion applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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37
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Single-Atom-Based Catalysts for Photocatalytic Water Splitting on TiO2 Nanostructures. Catalysts 2022. [DOI: 10.3390/catal12080905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
H2 generation from photocatalytic water splitting is one of the most promising approaches to producing cost-effective and sustainable fuel. Nanostructured TiO2 is a highly stable and efficient semiconductor photocatalyst for this purpose. The main drawback of TiO2 as a photocatalyst is the sluggish charge transfer on the surface of TiO2 that can be tackled to a great extent by the use of platinum group materials (PGM) as co-catalysts. However, the scarcity and high cost of the PGMs is one of the issues that prevent the widespread use of TiO2/PGM systems for photocatalytic H2 generation. Single-atom catalysts which are currently the frontline in the catalysis field can be a favorable path to overcome the scarcity and further advance the use of noble metals. More importantly, single-atom (SA) catalysts simultaneously have the advantage of homogenous and heterogeneous catalysts. This mini-review specifically focuses on the single atom decoration of TiO2 nanostructures for photocatalytic water splitting. The latest progress in fabrication, characterization, and application of single-atoms in photocatalytic H2 generation on TiO2 is reviewed.
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38
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Fan R, Wang H, Zheng X, Chen J, Ou Y, Wang Y, Mao S. Fe 2 Dimers for Non-Polar Diatomic O 2 Electroreduction. CHEMSUSCHEM 2022; 15:e202200532. [PMID: 35604289 DOI: 10.1002/cssc.202200532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/26/2022] [Indexed: 06/15/2023]
Abstract
Non-polar diatomic molecule activation is of great significance for catalysis. Despite the high atomic efficiency, the catalytic performance of single-atom catalysts is limited by insufficient receiving sites for diatomic molecule adsorption. Here, Fe2 dimers were successfully synthesized through precisely regulating the metal loading on metal-organic frameworks. The unique role of metal dimers in activating diatomic O2 molecules was explored. In alkaline electrolytes, the specific oxygen reduction reaction activity of Fe2 dimers was 7 times higher than that of Fe1 counterparts. The hydrogen atom transfer probes indicated a different activation mode for O2 on Fe1 and Fe2 dimers, respectively. Theoretical calculation results revealed that Fe2 dimers opened up a new reaction pathway by promoting the direct breaking of O=O bonds, thus avoiding the usual formation of *OOH intermediates, which helped explain the lower H2 O2 yield and higher specific activity.
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Affiliation(s)
- Ruxue Fan
- Advanced Materials and Catalysis Group, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Haiyan Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, P. R. China
| | - Xiaozhong Zheng
- Advanced Materials and Catalysis Group, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Jiadong Chen
- Advanced Materials and Catalysis Group, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Yang Ou
- Center of Electron Microscopy and State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China
| | - Yong Wang
- Advanced Materials and Catalysis Group, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
- Center of Chemistry for Frontier Technologies, Zhejiang University, Hangzhou, 310028, P. R. China
| | - Shanjun Mao
- Advanced Materials and Catalysis Group, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou, 310028, P. R. China
- Center of Chemistry for Frontier Technologies, Zhejiang University, Hangzhou, 310028, P. R. China
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39
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Wang Y, Ren X, Jiang B, Deng M, Zhao X, Pang R, Li SF. Synergetic Catalysis of Magnetic Single-Atom Catalysts Confined in Graphitic-C 3N 4/CeO 2(111) Heterojunction for CO Oxidization. J Phys Chem Lett 2022; 13:6367-6375. [PMID: 35796604 DOI: 10.1021/acs.jpclett.2c01605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Magnetic single-atom catalysts (MSAC), due to the intrinsic spin degree of freedom, are of particular importance relative to other conventional SAC for applications in various catalytic processes, especially in those cases that involve spin-triplet O2. However, the bottleneck issue in this field is the clustering of the SAC during the processes. Here using first-principles calculations we predict that Mn atoms can be readily confined in the interface of the porous g-C3N4/CeO2(111) heterostructure, forming high-performance MSAC for O2 activation via a delicate synergetic mechanism of charge transfer, mainly provided by the p-block g-C3N4 overlayer mediated by the d-block Mn active site, and spin selection, preserved mainly through active participation of the f-block Ce atoms and/or g-C3N4, which effectively promotes the CO oxidization. Such a recipe is also demonstrated to be valid for V- and Nb-MSACs, which may shed new light on the design of highly efficient MSACs for various important chemical processes wherein spin-selection matters.
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Affiliation(s)
- Yueyang Wang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaoyan Ren
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Bojie Jiang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Meng Deng
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Xingju Zhao
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Rui Pang
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - S F Li
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
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40
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Walz A, Stoiber K, Huettig A, Schlichting H, Barth JV. Navigate Flying Molecular Elephants Safely to the Ground: Mass-Selective Soft Landing up to the Mega-Dalton Range by Electrospray Controlled Ion-Beam Deposition. Anal Chem 2022; 94:7767-7778. [PMID: 35609119 PMCID: PMC9178560 DOI: 10.1021/acs.analchem.1c04495] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The prototype of a highly versatile and efficient preparative mass spectrometry system used for the deposition of molecules in ultrahigh vacuum (UHV) is presented, along with encouraging performance data obtained using four model species that are thermolabile or not sublimable. The test panel comprises two small organic compounds, a small and very large protein, and a large DNA species covering a 4-log mass range up to 1.7 MDa as part of a broad spectrum of analyte species evaluated to date. Three designs of innovative ion guides, a novel digital mass-selective quadrupole (dQMF), and a standard electrospray ionization (ESI) source are combined to an integrated device, abbreviated electrospray controlled ion-beam deposition (ES-CIBD). Full control is achieved by (i) the square-wave-driven radiofrequency (RF) ion guides with steadily tunable frequencies, including a dQMF allowing for investigation, purification, and deposition of a virtually unlimited m/z range, (ii) the adjustable landing energy of ions down to ∼2 eV/z enabling integrity-preserving soft landing, (iii) the deposition in UHV with high ion beam intensity (up to 3 nA) limiting contaminations and deposition time, and (iv) direct coverage control via the deposited charge. The maximum resolution of R = 650 and overall efficiency up to Ttotal = 4.4% calculated from the solution to UHV deposition are advantageous, whereby the latter can be further enhanced by optimizing ionization performance. In the setup presented, a scanning tunneling microscope (STM) is attached for in situ UHV investigations of deposited species, demonstrating a selective, structure-preserving process and atomically clean layers.
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Affiliation(s)
- Andreas Walz
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | - Karolina Stoiber
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | - Annette Huettig
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | - Hartmut Schlichting
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | - Johannes V Barth
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
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41
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Ishikawa R, Ueno Y, Ikuhara Y, Shibata N. Direct Observation of Atomistic Reaction Process between Pt Nanoparticles and TiO 2 (110). NANO LETTERS 2022; 22:4161-4167. [PMID: 35533402 DOI: 10.1021/acs.nanolett.2c00929] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The catalytic activity and selectivity of heterogeneous catalysts are governed by atomic and electronic structures at the heterointerface between noble metal nanoparticles (NPs) and oxide substrates. In specific chemical reactions, it is well-known that the catalytic activity is strongly suppressed by annealing in a reducing atmosphere, so-called strong metal-support interaction (SMSI). However, it is still unclear the formation process and atomistic origin of the SMSI. By preparing well-defined platinum (Pt) NPs supported on atomically flat TiO2 (110) substrate, we directly show the formation of chemically ordered Pt-Ti intermetallic NPs and impregnation of NPs into TiO2 substrate at high temperatures by using atomic-resolution scanning transmission electron microscopy combined with electron energy-loss spectroscopy. Furthermore, we observed negative charge transfer from the Pt-Ti intermetallic NPs to the TiO2 surface, which would strongly affect the catalytic activities.
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Affiliation(s)
- Ryo Ishikawa
- Institute of Engineering Innovation, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
| | - Yujiro Ueno
- Institute of Engineering Innovation, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - Yuichi Ikuhara
- Institute of Engineering Innovation, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, Aichi 456-8587, Japan
| | - Naoya Shibata
- Institute of Engineering Innovation, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
- Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, Aichi 456-8587, Japan
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42
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Feng C, Zhang Z, Wang D, Kong Y, Wei J, Wang R, Ma P, Li H, Geng Z, Zuo M, Bao J, Zhou S, Zeng J. Tuning the Electronic and Steric Interaction at the Atomic Interface for Enhanced Oxygen Evolution. J Am Chem Soc 2022; 144:9271-9279. [PMID: 35549330 DOI: 10.1021/jacs.2c00533] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The two-dimensional surface or one-dimensional interface of heterogeneous catalysts is essential to determine the adsorption strengths and configurations of the reaction intermediates for desired activities. Recently, the development of single-atom catalysts has enabled an atomic-level understanding of catalytic processes. However, it remains obscure whether the conventional concept and mechanism of one-dimensional interface are applicable to zero-dimensional single atoms. In this work, we arranged the locations of single atoms to explore their interfacial interactions for improved oxygen evolution. When iridium single atoms were confined into the lattice of CoOOH, efficient electron transfer between Ir and Co tuned the adsorption strength of oxygenated intermediates. In contrast, atomic iridium species anchored on the surface of CoOOH induced inappreciable modification in electronic structures, whereas steric interactions with key intermediates at its Ir-OH-Co interface played a primary role in reducing its energy barrier toward oxygen evolution.
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Affiliation(s)
- Chen Feng
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Zhirong Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Dongdi Wang
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Yuan Kong
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Jie Wei
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Ruyang Wang
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Peiyu Ma
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Hongliang Li
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Zhigang Geng
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Ming Zuo
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Jun Bao
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Shiming Zhou
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Jie Zeng
- Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
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43
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Weissenberger T, Kapil N, Trogadas P, Coppens MO. One‐pot synthesis of hierarchical, micro‐macroporous zeolites with encapsulated metal particles as sinter‐resistant, bifunctional catalysts. ChemCatChem 2022. [DOI: 10.1002/cctc.202200268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tobias Weissenberger
- Friedrich-Alexander-Universitat Erlangen-Nurnberg Institute of Chemical Reaction Engineering Egerlandstr. 3 91058 Erlangen GERMANY
| | - Nidhi Kapil
- University College London Department of Chemical Engineering Torrington Place WC1E 7JE London UNITED KINGDOM
| | - Panagiotis Trogadas
- University College London Department of Chemical Engineering Torrington Place WC1E 7JE London UNITED KINGDOM
| | - Marc-Olivier Coppens
- University College London Department of Chemical Engineering Torrington Place WC1E 7JE London GERMANY
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44
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de Lara-Castells MP. First-principles modelling of the new generation of subnanometric metal clusters: Recent case studies. J Colloid Interface Sci 2022; 612:737-759. [PMID: 35033919 DOI: 10.1016/j.jcis.2021.12.186] [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: 11/11/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 10/19/2022]
Abstract
The very recent development of highly selective techniques making possible the synthesis and experimental characterization of subnanometric (subnanometer-sized) metal clusters (even single atoms) is pushing our understanding far beyond the present knowledge in materials science, driving these clusters as a new generation of quantum materials at the lower bounds of nanotechnology. When the size of the metal cluster is reduced to a small number of atoms, the d-band of the metal splits into a subnanometric d-type molecular orbitals network in which all metal atoms are inter-connected, with the inter-connections having the length of a chemical bond (1-2 Å). These molecular characteristics are at the very core of the high stability and novel properties of the smallest metal clusters, with their integration into colloidal materials interacting with the environment having the potential to further boost their performance in applications such as luminescence, sensing, bioimaging, theranostics, energy conversion, catalysis, and photocatalysis. Through the presentation of very recent case studies, this Feature Article is aimed to illustrate how first-principles modelling, including methods beyond the state-of-the-art and an interplay with cutting-edge experiments, is helping to understand the special properties of these clusters at the most fundamental level. Moreover, it will be discussed how superfluid helium droplets can act both as nano-reactors and carriers to achieve the synthesis and surface deposition of metal clusters. This concept will be illustrated with the quantum simulation of the helium droplet-assisted soft-landing of a single Au atom onto a titanium dioxide (TiO2) surface. Next, it will be shown how the application of first-principles methods have disclosed the fundamental reasons why subnanometric Cu5 clusters are resistant to irreversible oxidation, and capable of increasing and extending into the visible region the solar absorption of TiO2, of augmenting its efficiency for photo-catalysis beyond a factor of four, also considering the decomposition and photo-activation of CO2 as a prototypical (photo-) catalytic reaction. Finally, I will discuss how the modification of the same material with subnanometric Ag5 clusters has converted it into a "reporter" of a surface polaron property as well as a novel two-dimensional polaronic material.
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45
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Revealing the catalytic kinetics and dynamics of individual Pt atoms at the single-molecule level. Proc Natl Acad Sci U S A 2022; 119:e2114639119. [PMID: 35349346 PMCID: PMC9168457 DOI: 10.1073/pnas.2114639119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here, with single-molecule fluorescence microscopy, we study the catalytic behavior of individual Pt atoms at single-turnover resolution, and then reveal the unique catalytic properties of Pt single-atom catalyst and the difference in catalytic properties between individual Pt atoms and Pt nanoparticles. Further density functional theory calculation indicates that unique catalytic properties of Pt single-atom catalyst could be attributed intrinsically to the unique surface properties of Pt1-based active sites. Due to the importance of single-atom catalysts (SAC), here, the catalysis of Pt SAC was studied at the single-molecule single-atom level. Both static and dynamic activity heterogeneity are observed in Pt SAC. It reveals that the intrinsic catalytic activity of Pt SAC is higher than that of Pt nanoparticles (NPs), although they follow the same bimolecular competition mechanism. Significantly, Pt SAC presents no catalysis-induced surface restructuring, meaning that the dynamic activity fluctuation of Pt SAC can only be attributed to the spontaneous surface restructuring, and the catalysis process does not affect much of the structure of Pt1-based active sites, all different from Pt NP catalysis, in which the surface restructuring and the catalysis can affect each other. Further, density functional theory (DFT) calculation indicates that the unique catalytic properties of Pt SAC or the different catalytic properties between Pt SAC and NPs could be attributed to the strong adsorptions of both reactant and product on Pt SAC, large surface energy of Pt SAC, and strong binding of Pt1 on support. Knowledge revealed here provides fundamental insights into the catalysis of atomically dispersed catalyst.
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46
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Guo X, Liu B, Gao X, He F, Ma Q, Fan S, Zhao TS, Tian J, Reubroycharoen P, Zhang J. Improved olefin selectivity during CO hydrogenation on hydrophilic Fe/HAP catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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47
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Meier M, Hulva J, Jakub Z, Kraushofer F, Bobić M, Bliem R, Setvin M, Schmid M, Diebold U, Franchini C, Parkinson GS. CO oxidation by Pt 2/Fe 3O 4: Metastable dimer and support configurations facilitate lattice oxygen extraction. SCIENCE ADVANCES 2022; 8:eabn4580. [PMID: 35363523 PMCID: PMC10938578 DOI: 10.1126/sciadv.abn4580] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
Heterogeneous catalysts based on subnanometer metal clusters often exhibit strongly size-dependent properties, and the addition or removal of a single atom can make all the difference. Identifying the most active species and deciphering the reaction mechanism is extremely difficult, however, because it is often not clear how the catalyst evolves in operando. Here, we use a combination of atomically resolved scanning probe microscopies, spectroscopic techniques, and density functional theory (DFT)-based calculations to study CO oxidation by a model Pt/Fe3O4(001) "single-atom" catalyst. We demonstrate that (PtCO)2 dimers, formed dynamically through the agglomeration of mobile Pt-carbonyl species, catalyze a reaction involving the oxide support to form CO2. Pt2 dimers produce one CO2 molecule before falling apart into two adatoms, releasing the second CO. Olattice extraction only becomes facile when both the Pt-dimer and the Fe3O4 support can access metastable configurations, suggesting that substantial, concerted rearrangements of both cluster and support must be considered for reactions occurring at elevated temperature.
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Affiliation(s)
- Matthias Meier
- Institute of Applied Physics, TU Wien, Vienna, Austria
- Computational Materials Physics, University of Vienna, Vienna, Austria
| | - Jan Hulva
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | - Zdenek Jakub
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | | | - Mislav Bobić
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | - Roland Bliem
- Institute of Applied Physics, TU Wien, Vienna, Austria
| | - Martin Setvin
- Institute of Applied Physics, TU Wien, Vienna, Austria
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | | | | | - Cesare Franchini
- Computational Materials Physics, University of Vienna, Vienna, Austria
- Alma Mater Studiorum – Università di Bologna, Bologna, Italy
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48
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Iemhoff A, Vennewald M, Artz J, Mebrahtu C, Meledin A, Weirich TE, Hartmann H, Besmehn A, Aramini M, Venturini F, Mosselmans F, Held G, Arrigo R, Palkovits R. On the stability of isolated iridium sites in N‐rich frameworks against agglomeration under reducing conditions. ChemCatChem 2022. [DOI: 10.1002/cctc.202200179] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andree Iemhoff
- RWTH: Rheinisch-Westfalische Technische Hochschule Aachen ITMC 52074 Aachen GERMANY
| | - Maurice Vennewald
- RWTH: Rheinisch-Westfalische Technische Hochschule Aachen ITMC 52074 Aachen GERMANY
| | - Jens Artz
- RWTH: Rheinisch-Westfalische Technische Hochschule Aachen ITMC 52074 Aachen GERMANY
| | - Chalachew Mebrahtu
- RWTH: Rheinisch-Westfalische Technische Hochschule Aachen ITMC 52074 Aachen GERMANY
| | - Alexander Meledin
- RWTH: Rheinisch-Westfalische Technische Hochschule Aachen GFE GERMANY
| | - Thomas E. Weirich
- RWTH: Rheinisch-Westfalische Technische Hochschule Aachen GFE GERMANY
| | - Heinrich Hartmann
- Forschungszentrum Jülich GmbH: Forschungszentrum Julich GmbH ZEA-3 GERMANY
| | - Astrid Besmehn
- Forschungszentrum Jülich: Forschungszentrum Julich GmbH ZEA-3 GERMANY
| | - Matteo Aramini
- Diamond Light Source Ltd Harwell Science and Innovation Campus UNITED KINGDOM
| | - Federica Venturini
- Diamond Light Source Ltd Harwell Science and Innovation Campus UNITED KINGDOM
| | - Fred Mosselmans
- Diamond Light Source Ltd Harwell Science and Innovation Campus UNITED KINGDOM
| | - Georg Held
- Diamond Light Source Ltd Harwell Science and Innovation Campus UNITED KINGDOM
| | - Rosa Arrigo
- Diamond Light Source Ltd Harwell Science and Innovation Campus UNITED KINGDOM
| | - Regina Palkovits
- RWTH Aachen University Institut für Technische und Makromolekulare Chemie Worringerweg 1 52074 Aachen GERMANY
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49
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Valtera S, Jašík J, Vaidulych M, Olszówka JE, Zlámalová M, Tarábková H, Kavan L, Vajda Š. Atom by atom built subnanometer copper cluster catalyst for the highly selective oxidative dehydrogenation of cyclohexene. J Chem Phys 2022; 156:114302. [DOI: 10.1063/5.0065350] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The effect of particle size and support on the catalytic performance of supported subnanometer copper clusters was investigated in the oxidative dehydrogenation of cyclohexene. From among the investigated seven size-selected subnanometer copper particles between a single atom and clusters containing 2–7 atoms, the highest activity was observed for the titania-supported copper tetramer with 100% selectivity toward benzene production and being about an order of magnitude more active than not only all the other investigated cluster sizes on the same support but also the same tetramer on the other supports, Al2O3, SiO2, and SnO2. In addition to the profound effect of cluster size on activity and with Cu4 outstanding from the studied series, Cu4 clusters supported on SiO2 provide an example of tuning selectivity through support effects when this particular catalyst also produces cyclohexadiene with about 30% selectivity. Titania-supported Cu5 and Cu7 clusters supported on TiO2 produce a high fraction of cyclohexadiene in contrast to their neighbors, while Cu4 and Cu6 solely produce benzene without any combustion, thus representing odd–even oscillation of selectivity with the number of atoms in the cluster.
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Affiliation(s)
- Stanislav Valtera
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
| | - Juraj Jašík
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
| | - Mykhailo Vaidulych
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
| | - Joanna Elżbieta Olszówka
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
| | - Magda Zlámalová
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, CZ-128 40 Prague, Czech Republic
| | - Hana Tarábková
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
| | - Ladislav Kavan
- Department of Electrochemical Materials, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
| | - Štefan Vajda
- Department of Nanocatalysis, J. Heyrovský Institute of Physical Chemistry, v.v.i., Czech Academy of Sciences, Dolejškova 2155/3, CZ-182 23 Prague 8, Czech Republic
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Wang Z, Wu F. Emerging Single-Atom Catalysts/Nanozymes for Catalytic Biomedical Applications. Adv Healthc Mater 2022; 11:e2101682. [PMID: 34729955 DOI: 10.1002/adhm.202101682] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/10/2021] [Indexed: 12/29/2022]
Abstract
Single-atom catalysts (SACs) are a type of atomically dispersed nanozymes with the highest atom utilization, which employ low-coordinated single atoms as the catalytically active sites. SACs not only inherit the merits of traditional nanozymes, but also hold high catalytic activity and superb catalytic selectivity, which ensure their tremendous application potential in environmental remediation, energy storage and conversion, chemical industry, nanomedicine, etc. Nevertheless, undesired aggregation effect of single atoms during preactivation and reaction processes is significantly enhanced owing to the high surface free energy of single atoms. In this case, appropriate substrates are requisite to prevent the aggregation event through the powerful interactions between the single atoms and the substrates, thereby stabilizing the high catalytic activity of the catalysts. In this review, the synthetic methods and characterization approaches of SACs are first described. Then the application cases of SACs in nanomedicine are summarized. Finally, the current challenges and future opportunities of the SACs in nanomedicine are outlined. It is hoped that this review may have implications for furthering the development of new SACs with improved biophysicochemical properties and broadened biomedical applications.
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Affiliation(s)
- Zihao Wang
- State Key Laboratory of Bioelectronics School of Biological Science and Medical Engineering Southeast University 2 Sipailou Road Nanjing 210096 P. R. China
| | - Fu‐Gen Wu
- State Key Laboratory of Bioelectronics School of Biological Science and Medical Engineering Southeast University 2 Sipailou Road Nanjing 210096 P. R. China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor (Guangxi Medical University) Ministry of Education 22 Shuangyong Road Nanning 530022 P. R. China
- Guangxi Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor 22 Shuangyong Road Nanning 530022 P. R. China
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