1
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Jin N, Sun Y, Shi W, Wang P, Nagaoka Y, Cai T, Wu R, Dube L, Nyiera HN, Liu Y, Mani T, Wang X, Zhao J, Chen O. Type-I CdS/ZnS Core/Shell Quantum Dot-Gold Heterostructural Nanocrystals for Enhanced Photocatalytic Hydrogen Generation. J Am Chem Soc 2023; 145:21886-21896. [PMID: 37768875 DOI: 10.1021/jacs.3c06065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Developing Type-I core/shell quantum dots is of great importance toward fabricating stable and sustainable photocatalysts. However, the application of Type-I systems has been limited due to the strongly confined photogenerated charges by the energy barrier originating from the wide-bandgap shell material. In this project, we found that through the decoration of Au satellite-type domains on the surface of Type-I CdS/ZnS core/shell quantum dots, such an energy barrier can be effectively overcome and an over 400-fold enhancement of photocatalytic H2 evolution rate was achieved compared to bare CdS/ZnS quantum dots. Transient absorption spectroscopic studies indicated that the charges can be effectively extracted and subsequently transferred to surrounding molecular substrates in a subpicosecond time scale in such hybrid nanocrystals. Based on density functional theory calculations, the ultrafast charge separation rates were ascribed to the formation of intermediate Au2S layer at the semiconductor-metal interface, which can successfully offset the energy confinement introduced by the ZnS shell. Our findings not only provide insightful understandings on charge carrier dynamics in semiconductor-metal heterostructural materials but also pave the way for the future design of quantum dot-based hybrid photocatalytic systems.
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Affiliation(s)
- Na Jin
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Yonglei Sun
- Institute of Materials Science, University of Connecticut, Storrs Mansfield, Connecticut 06269, United States
| | - Wenwu Shi
- School of Physical Science and Technology, Southwest University, Chongqing 400715, People's Republic of China
- Institute of Information Technology, Shenzhen Institute of Information Technology, Shenzhen 518172, China
| | - Ping Wang
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials of the Ministry of Education, College of Chemistry, Jilin Normal University, Changchun 130103, China
| | - Yasutaka Nagaoka
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Tong Cai
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Rongzhen Wu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Lacie Dube
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Hawi N Nyiera
- Department of Chemistry, University of Connecticut, Storrs Mansfield, Connecticut 06269, United States
| | - Yuzi Liu
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Tomoyasu Mani
- Department of Chemistry, University of Connecticut, Storrs Mansfield, Connecticut 06269, United States
| | - Xinzhong Wang
- Institute of Information Technology, Shenzhen Institute of Information Technology, Shenzhen 518172, China
| | - Jing Zhao
- Institute of Materials Science, University of Connecticut, Storrs Mansfield, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs Mansfield, Connecticut 06269, United States
| | - Ou Chen
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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2
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Jiang K, Li Z, Zhang Z, Li J, Qi X, Zhou J, Wang X, Wei H, Chu H. Stable and Active Au Catalyst Supported on CeMnO 3 Perovskite for Selective Oxidation of Glycerol. Inorg Chem 2023; 62:8145-8157. [PMID: 37186870 DOI: 10.1021/acs.inorgchem.3c00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The selective oxidation of glycerol holds promise to transform glycerol into value-added chemicals. However, it remains a big challenge to achieve satisfactory selectivity toward the specific product at high conversion due to the multiple reaction pathways. Here, we prepare a hybrid catalyst via supporting Au nanoparticles on CeMnO3 perovskite with a modest surface area, achieving promoted conversion of glycerol (90.1%) and selectivity of glyceric acid (78.5%), which are much higher than those of CeMnOx solid-solution-supported Au catalysts with larger surface area and other Ce-based or Mn-based Au catalysts. The strong interaction between Au and CeMnO3 perovskite facilitates the electron transfer from the B-site metal (Mn) in the CeMnO3 perovskite to Au and stabilizes Au nanoparticles, which results in the enhanced catalytic activity and stability for glycerol oxidation. Valence band photoemission spectral analysis reveals that the uplifted d-band center of Au/CeMnO3 promotes the adsorption of the glyceraldehyde intermediate on the catalyst surface, which benefits further oxidation of glyceraldehyde into glyceric acid. The flexibility of the perovskite support provides a promising strategy for the rational design of high-performance glycerol oxidation catalysts.
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Affiliation(s)
- Kunhong Jiang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Zhenyu Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zehao Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Jiefei Li
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Xingyue Qi
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Jian Zhou
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Xiaojing Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Hang Wei
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
| | - Haibin Chu
- College of Chemistry and Chemical Engineering, Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules, Inner Mongolia University, Hohhot 010021, China
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3
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Göhl D, Paciok P, Wang Z, Kang JS, Heggen M, Mayrhofer KJJ, Román‐Leshkov Y, Ledendecker M. Core‐passivation: A concept for stable core‐shell nanoparticles in aqueous electrocatalysis. NANO SELECT 2023. [DOI: 10.1002/nano.202200240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Affiliation(s)
- Daniel Göhl
- Department of Chemistry Ernst‐Berl‐Institut für Technische und Makromolekulare Chemie Technical University of Darmstadt Darmstadt Germany
| | - Paul Paciok
- Ernst Ruska‐Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute Forschungszentrum Jülich GmbH Jülich Germany
| | - Zhenshu Wang
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Jin Soo Kang
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Marc Heggen
- Ernst Ruska‐Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute Forschungszentrum Jülich GmbH Jülich Germany
| | - Karl J. J. Mayrhofer
- Helmholtz‐Institute Erlangen‐Nürnberg for Renewable Energy Forschungszentrum Jülich GmbH Erlangen Germany
- Department of Chemical and Biological Engineering Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Erlangen Germany
| | - Yuriy Román‐Leshkov
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA
| | - Marc Ledendecker
- Department of Chemistry Ernst‐Berl‐Institut für Technische und Makromolekulare Chemie Technical University of Darmstadt Darmstadt Germany
- Professorship Sustainable Energy Materials Technical University Munich Straubing Germany
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4
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Qi X, Fu J, Jiang K, Chen T, He Y, Li J, Cao J, Wei H, Huang L, Chu H. Suppressing catalyst deactivation on Pd/CeO2 for selective oxidation of glucose into gluconic acid. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Le Berre C, Falqui A, Casu A, Debela TT, Barreau M, Hendon CH, Serp P. Tuning CO 2 hydrogenation selectivity on Ni/TiO 2 catalysts via sulfur addition. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01280d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although sulfur has long been identified as a poison for Ni catalysts in CO-methanation, its association with Ni on a reducible support allows the selective formation of CO in CO2 hydrogenation.
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Affiliation(s)
- Carole Le Berre
- LCC-CNRS, INPT, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
| | - Andrea Falqui
- Department of Physics “Aldo Pontremoli”, University of Milan, Via Celoria 16, 20133, Milan, Italy
| | - Alberto Casu
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental Sciences and Engineering (BESE) Division, 23955-6900 Thuwal, Saudi Arabia
| | - Tekalign T. Debela
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR, USA
| | - Mathias Barreau
- ICPEES-UMR 7515 CNRS-ECPM-Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France
| | | | - Philippe Serp
- LCC-CNRS, INPT, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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6
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Nie Y, Li L, Wei Z. Achievements in Pt nanoalloy oxygen reduction reaction catalysts: strain engineering, stability and atom utilization efficiency. Chem Commun (Camb) 2021; 57:12898-12913. [PMID: 34797362 DOI: 10.1039/d1cc05534h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Pt nanoalloy surfaces often show unique electronic and physicochemical properties that are distinct from those of their parent metals, which provide significant room for manipulating their oxygen reduction reaction (ORR) behaviour. In this Feature Article, we present the progress of our recent research and that of other groups in Pt nanoalloy catalysts for ORR from three aspects, namely, strain engineering, stability and atom utilization efficiency. Some new insights into Pt surface strain engineering will be firstly introduced, with a focus on discussing the effect of compressive and tensile strain on the chemisorption properties. Secondly, the design concepts and synthetic methodologies to intensify the inherent stability of Pt nanoalloys will be summarized. Then, the exciting research push in developing nanostructured alloys with high atom utilization efficiency of Pt will be presented. Finally, a brief illumination of challenges and future developing perspectives of Pt nanoalloy catalysts will be provided.
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Affiliation(s)
- Yao Nie
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China
| | - Li Li
- The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing 400044, China.
| | - Zidong Wei
- The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Chemistry and Chemical Engineering, Chongqing University, Shapingba 174, Chongqing 400044, China.
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7
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Gong S, Zhang YX, Niu Z. Recent Advances in Earth-Abundant Core/Noble-Metal Shell Nanoparticles for Electrocatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02587] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shuyan Gong
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu-Xiao Zhang
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Zhiqiang Niu
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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8
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Yin X, Yang L, Gao Q. Core-shell nanostructured electrocatalysts for water splitting. NANOSCALE 2020; 12:15944-15969. [PMID: 32761000 DOI: 10.1039/d0nr03719b] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
As the cornerstone of the hydrogen economy, water electrolysis consisting of the hydrogen and oxygen evolution reactions (HER and OER) greatly needs cost-efficient electrocatalysts that can decrease the dynamic overpotential and save on energy consumption. Over past years, observable progress has been made by constructing core-shell structures free from or with few noble-metals. They afford particular merits, e.g., a highly-exposed active surface, modulated electronic configurations, strain effects, interfacial synergy, or reinforced stability, to promote the kinetics and electrocatalytic performance of the HER, OER and overall water splitting. So far, a large variety of inorganics (carbon and transition-metal related components) have been introduced into core-shell electrocatalysts. Herein, representative efforts and progress are summarized with a clear classification of core and shell components, to access comprehensive insights into electrochemical processes that proceed on surfaces or interfaces. Finally, a perspective on the future development of core-shell electrocatalysts is offered. The overall aim is to shed some light on the exploration of emerging materials for energy conversion and storage.
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Affiliation(s)
- Xing Yin
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China.
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9
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Göhl D, Rueß H, Schlicht S, Vogel A, Rohwerder M, Mayrhofer KJJ, Bachmann J, Román‐Leshkov Y, Schneider JM, Ledendecker M. Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation. ChemElectroChem 2020. [DOI: 10.1002/celc.202000278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Daniel Göhl
- Department of Interface Chemistry and Surface EngineeringMax-Planck-Institut für Eisenforschung GmbH 40237 Düsseldorf Germany
| | - Holger Rueß
- Materials ChemistryRWTH Aachen University 52074 Aachen Germany
| | - Stefanie Schlicht
- Department of Chemistry and PharmacyFriedrich-Alexander University Erlangen-Nürnberg 91058 Erlangen Germany
| | - Alexandra Vogel
- Department of Interface Chemistry and Surface EngineeringMax-Planck-Institut für Eisenforschung GmbH 40237 Düsseldorf Germany
| | - Michael Rohwerder
- Department of Interface Chemistry and Surface EngineeringMax-Planck-Institut für Eisenforschung GmbH 40237 Düsseldorf Germany
| | - Karl J. J. Mayrhofer
- Helmholtz-Institute Erlangen-Nürnberg for Renewable EnergyForschungszentrum Jülich GmbH 91058 Erlangen Germany
- Department of Chemical and Biological EngineeringFriedrich-Alexander-Universität Erlangen-Nürnberg 91058 Erlangen Germany
| | - Julien Bachmann
- Department of Chemistry and PharmacyFriedrich-Alexander University Erlangen-Nürnberg 91058 Erlangen Germany
- Institute of ChemistrySaint Petersburg State University Saint Petersburg 198504 Russian Federation
| | - Yuriy Román‐Leshkov
- Department of Chemical EngineeringMassachusetts Institute of Technology Cambridge MA 02139 USA
| | | | - Marc Ledendecker
- Department of Interface Chemistry and Surface EngineeringMax-Planck-Institut für Eisenforschung GmbH 40237 Düsseldorf Germany
- Department of Technical ChemistryTechnical University Darmstadt 64287 Darmstadt Germany
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10
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Wang Z, Garg A, Wang L, He H, Dasgupta A, Zanchet D, Janik MJ, Rioux RM, Román-Leshkov Y. Enhancement of Alkyne Semi-Hydrogenation Selectivity by Electronic Modification of Platinum. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04070] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhenshu Wang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Aaron Garg
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Linxi Wang
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Haoran He
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Anish Dasgupta
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Daniela Zanchet
- Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Michael J. Janik
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Robert M. Rioux
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Yuriy Román-Leshkov
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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11
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Göhl D, Garg A, Paciok P, Mayrhofer KJJ, Heggen M, Shao-Horn Y, Dunin-Borkowski RE, Román-Leshkov Y, Ledendecker M. Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells. NATURE MATERIALS 2020; 19:287-291. [PMID: 31844277 DOI: 10.1038/s41563-019-0555-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 11/07/2019] [Indexed: 05/21/2023]
Abstract
Core-shell particles with earth-abundant cores represent an effective design strategy for improving the performance of noble metal catalysts, while simultaneously reducing the content of expensive noble metals1-4. However, the structural and catalytic stabilities of these materials often suffer during the harsh conditions encountered in important reactions, such as the oxygen reduction reaction (ORR)3-5. Here, we demonstrate that atomically thin Pt shells stabilize titanium tungsten carbide cores, even at highly oxidizing potentials. In situ, time-resolved experiments showed how the Pt coating protects the normally labile core against oxidation and dissolution, and detailed microscopy studies revealed the dynamics of partially and fully coated core-shell nanoparticles during potential cycling. Particles with complete Pt coverage precisely maintained their core-shell structure and atomic composition during accelerated electrochemical ageing studies consisting of over 10,000 potential cycles. The exceptional durability of fully coated materials highlights the potential of core-shell architectures using earth-abundant transition metal carbide (TMC) and nitride (TMN) cores for future catalytic applications.
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Affiliation(s)
- Daniel Göhl
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany
- Faculty of Chemistry and Biochemistry, Ruhr-Universität Bochum, Bochum, Germany
| | - Aaron Garg
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Paul Paciok
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Karl J J Mayrhofer
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany
- Helmholtz Institute Erlangen-Nürnberg for Renewable Energy, Forschungszentrum Jülich GmbH, Erlangen, Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Yang Shao-Horn
- Department of Mechanical Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Rafal E Dunin-Borkowski
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Yuriy Román-Leshkov
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Marc Ledendecker
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany.
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12
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Garg A, Gonçalves DS, Liu Y, Wang Z, Wang L, Yoo JS, Kolpak A, Rioux RM, Zanchet D, Román-Leshkov Y. Impact of Transition Metal Carbide and Nitride Supports on the Electronic Structure of Thin Platinum Overlayers. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01272] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Daniela Zanchet
- Institute of Chemistry, University of Campinas, Campinas, SP 13083-970, Brazil
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13
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Hunt ST, Román-Leshkov Y. Principles and Methods for the Rational Design of Core-Shell Nanoparticle Catalysts with Ultralow Noble Metal Loadings. Acc Chem Res 2018; 51:1054-1062. [PMID: 29510023 DOI: 10.1021/acs.accounts.7b00510] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Conspecuts Commercial and emerging renewable energy technologies are underpinned by precious metal catalysts, which enable the transformation of reactants into useful products. However, the noble metals (NMs) comprise the least abundant elements in the lithosphere, making them prohibitively scarce and expensive for future global-scale technologies. As such, intense research efforts have been devoted to eliminating or substantially reducing the loadings of NMs in various catalytic applications. These efforts have resulted in a plethora of heterogeneous NM catalyst morphologies beyond the traditional supported spherical nanoparticle. In many of these new architectures, such as shaped, high index, and bimetallic particles, less than 20% of the loaded NMs are available to perform catalytic turnovers. The majority of NM atoms are subsurface, providing only a secondary catalytic role through geometric and ligand effects with the active surface NM atoms. A handful of architectures can approach 100% NM utilization, but severe drawbacks limit general applicability. For example, in addition to problems with stability and leaching, single atom and ultrasmall cluster catalysts have extreme metal-support interactions, discretized d-bands, and a lack of adjacent NM surface sites. While monolayer thin films do not possess these features, they exhibit such low surface areas that they are not commercially relevant, serving predominantly as model catalysts. This Account champions core-shell nanoparticles (CS NPs) as a vehicle to design highly active, stable, and low-cost materials with high NM utilization for both thermo- and electrocatalysis. The unique benefits of the many emerging NM architectures could be preserved while their fundamental limitations could be overcome through reformulation via a core-shell morphology. However, the commercial realization of CS NPs remains challenging, requiring concerted advances in theory and manufacturing. We begin by formulating seven constraints governing proper core material design, which naturally point to early transition metal ceramics as suitable core candidates. Two constraints prove extremely challenging. The first relates to the core modifying the shell work function and d-band. To properly investigate materials that could satisfy this constraint, we discuss our development of a new heat, quench, and exfoliation (HQE) density functional theory (DFT) technique to model heterometallic interfaces. This technique is used to predict how transition metal carbides can favorably tune the catalytic properties of various NM monolayer shell configurations. The second challenging constraint relates to the scalable manufacturing of CS NP architectures with independent synthetic control of the thickness and composition of the shell and the size and composition of the core. We discuss our development of a synthetic method that enables high temperature self-assembly of tunable CS NP configurations. Finally, we discuss how these principles and methods were used to design catalysts for a variety of applications. These include the design of a thermally stable sub-monolayer CS catalyst, a highly active methanol electrooxidation catalyst, CO-tolerant Pt catalysts, and a hydrogen evolution catalyst that is less expensive than state-of-the-art NM-free catalysts. Such core-shell architectures offer the promise of ultralow precious metal loadings while ceramic cores hold the promise of thermodynamic stability and access to unique catalytic activity/tunability.
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Affiliation(s)
- Sean T. Hunt
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yuriy Román-Leshkov
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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14
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Jain A, Ramasubramaniam A. Tuning core–shell interactions in tungsten carbide–Pt nanoparticles for the hydrogen evolution reaction. Phys Chem Chem Phys 2018; 20:23262-23271. [DOI: 10.1039/c8cp04113j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Titanium doping enhances the stability and activity of tungsten carbide core–platinum shell nanoparticles for hydrogen evolution
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Affiliation(s)
- Akash Jain
- Department of Chemical Engineering
- University of Massachusetts
- Amherst
- USA
| | - Ashwin Ramasubramaniam
- Department of Mechanical and Industrial Engineering
- University of Massachusetts
- Amherst
- USA
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15
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Garg A, Milina M, Ball M, Zanchet D, Hunt ST, Dumesic JA, Román‐Leshkov Y. Transition‐Metal Nitride Core@Noble‐Metal Shell Nanoparticles as Highly CO Tolerant Catalysts. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Aaron Garg
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Maria Milina
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Madelyn Ball
- Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - Daniela Zanchet
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
- Institute of Chemistry University of Campinas Campinas SP 13083-970 Brazil
| | - Sean T. Hunt
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - James A. Dumesic
- Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - Yuriy Román‐Leshkov
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
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16
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Garg A, Milina M, Ball M, Zanchet D, Hunt ST, Dumesic JA, Román‐Leshkov Y. Transition‐Metal Nitride Core@Noble‐Metal Shell Nanoparticles as Highly CO Tolerant Catalysts. Angew Chem Int Ed Engl 2017; 56:8828-8833. [DOI: 10.1002/anie.201704632] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Aaron Garg
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Maria Milina
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Madelyn Ball
- Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - Daniela Zanchet
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
- Institute of Chemistry University of Campinas Campinas SP 13083-970 Brazil
| | - Sean T. Hunt
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - James A. Dumesic
- Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - Yuriy Román‐Leshkov
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
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Butler KT, Hendon CH, Walsh A. Designing porous electronic thin-film devices: band offsets and heteroepitaxy. Faraday Discuss 2017. [DOI: 10.1039/c7fd00019g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Increasing numbers of electrically active porous framework materials are being reported, with conductivities that make them attractive for technological applications. As design strategies for efficient carrier transport emerge, the next challenge is to incorporate the materials into a functioning device. In thin-film devices interface effects are of critical importance to overall function. In this article we present a method to identify compatible materials combinations to achieve mechanically robust, electronically optimal pairings. The computational screening is based on a two-step procedure: (i) matching of lattice constants to ensure interfaces with minimal epitaxial strain and therefore maximal mechanical and chemical stability; (ii) matching of absolute electron energies to construct energy-band-alignment diagrams, which can be used to screen for particular electronic applications. We apply the methodology to search for zeolitic imidazolate framework (ZIF) type materials that are compatible with native metal electrodes. The procedure allows us to predict simple routes for electrochemical deposition of ZIFs for application as conductive porous electrodes.
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Affiliation(s)
| | | | - Aron Walsh
- Department of Materials
- Imperial College London
- London
- UK
- Department of Materials Science and Engineering
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