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Dworzak A, Paciok P, Mahr C, Heggen M, Dosche C, Rosenauer A, Oezaslan M. Tuning the morphology and chemical distribution of Ag atoms in Au rich nanoparticles using electrochemical dealloying. Nanoscale 2024. [PMID: 38683029 DOI: 10.1039/d4nr00046c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Dealloying of Ag-Au alloy nanoparticles (NPs) strongly differs from the corresponding bulk alloy materials. Here, we have investigated the effects of potentiodynamic and potentiostatic dealloying on structure and distribution of residual Ag atoms for Au rich NPs. Two different sizes of Ag rich alloy NPs, 77 ± 26 nm Ag77Au23 and 12 ± 5 nm Ag86Au14, were prepared. 77 nm Ag77Au23 NPs form a homogeneous alloy, while 12 nm Ag86Au14 NPs show an Ag rich shell-Au rich core arrangement. The two groups of as-prepared NPs were dealloyed either under potentiodynamic (0.2-1.3 VRHE) or potentiostatic (0.9, 1.2, and 1.6 VRHE) conditions in 0.1 M HClO4. For the initial 77 nm Ag77Au23 NPs, both dealloying protocols lead to pore evolution. Interestingly, instead of homogenous Ag distribution, numerous Ag rich regions form and locate near the pores and particle edges. The critical dealloying potential also differs by ∼500 mV depending on the dealloying method. The initial 12 nm Ag86Au14 NPs remain dense and solid, but Ag distribution and thickness of the Au passivation layer vary between both dealloying protocols. When the Au passivation layer is very thin, the residual Ag atoms tend to segregate to the particle surface after dealloying. Due to the size effect, small NPs are less electrochemically stable and show a lower critical dealloying potential. In this systematic study, we demonstrate that the mobility of Au surface atoms and dealloying conditions control the structure and residual Ag distribution within dealloyed NPs.
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Affiliation(s)
- Alexandra Dworzak
- Technical Electrocatalysis Laboratory, Institute of Technical Chemistry, Technische Universität Braunschweig, Franz-Liszt-Str. 35a, 38106 Braunschweig, Germany.
- Institute of Chemistry, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany
| | - Paul Paciok
- Ernst Ruska-Center, Jülich Research Centre, 52425 Jülich, Germany
| | - Christoph Mahr
- Institute of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
| | - Marc Heggen
- Ernst Ruska-Center, Jülich Research Centre, 52425 Jülich, Germany
| | - Carsten Dosche
- Institute of Chemistry, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany
| | - Andreas Rosenauer
- Institute of Solid State Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, Bibliothekstr. 1, 28359 Bremen, Germany
| | - Mehtap Oezaslan
- Technical Electrocatalysis Laboratory, Institute of Technical Chemistry, Technische Universität Braunschweig, Franz-Liszt-Str. 35a, 38106 Braunschweig, Germany.
- Institute of Chemistry, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany
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2
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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3
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Koh ES, Geiger S, Gunnarson A, Imhof T, Meyer GM, Paciok P, Etzold BJM, Rose M, Schüth F, Ledendecker M. Influence of Support Material on the Structural Evolution of Copper during Electrochemical CO
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Reduction. ChemElectroChem 2023. [DOI: 10.1002/celc.202200924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ezra S. Koh
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Simon Geiger
- Department of Technical Thermodynamics Deutsches Zentrum für Luft-und Raumfahrt, Stuttgart Pfaffenwaldring 38–40 70569 Stuttgart
| | - Alexander Gunnarson
- Department of Heterogeneous Catalysis Max Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Timo Imhof
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Gregor M. Meyer
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Paul Paciok
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Bastian J. M. Etzold
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Marcus Rose
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Ferdi Schüth
- Department of Heterogeneous Catalysis Max Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Marc Ledendecker
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
- Current address: Technical University of Munich Department of Sustainable Energy Materials 94315 Straubing
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4
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Hornberger E, Klingenhof M, Polani S, Paciok P, Kormányos A, Chattot R, MacArthur KE, Wang X, Pan L, Drnec J, Cherevko S, Heggen M, Dunin-Borkowski RE, Strasser P. On the electrocatalytical oxygen reduction reaction activity and stability of quaternary RhMo-doped PtNi/C octahedral nanocrystals. Chem Sci 2022; 13:9295-9304. [PMID: 36093024 PMCID: PMC9384817 DOI: 10.1039/d2sc01585d] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 07/01/2022] [Indexed: 12/01/2022] Open
Abstract
Recently proposed bimetallic octahedral Pt–Ni electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cell (PEMFC) cathodes suffer from particle instabilities in the form of Ni corrosion and shape degradation. Advanced trimetallic Pt-based electrocatalysts have contributed to their catalytic performance and stability. In this work, we propose and analyse a novel quaternary octahedral (oh-)Pt nanoalloy concept with two distinct metals serving as stabilizing surface dopants. An efficient solvothermal one-pot strategy was developed for the preparation of shape-controlled oh-PtNi catalysts doped with Rh and Mo in its surface. The as-prepared quaternary octahedral PtNi(RhMo) catalysts showed exceptionally high ORR performance accompanied by improved activity and shape integrity after stability tests compared to previously reported bi- and tri-metallic systems. Synthesis, performance characteristics and degradation behaviour are investigated targeting deeper understanding for catalyst system improvement strategies. A number of different operando and on-line analysis techniques were employed to monitor the structural and elemental evolution, including identical location scanning transmission electron microscopy and energy dispersive X-ray analysis (IL-STEM-EDX), operando wide angle X-ray spectroscopy (WAXS), and on-line scanning flow cell inductively coupled plasma mass spectrometry (SFC-ICP-MS). Our studies show that doping PtNi octahedral catalysts with small amounts of Rh and Mo suppresses detrimental Pt diffusion and thus offers an attractive new family of shaped Pt alloy catalysts for deployment in PEMFC cathode layers. PtNi nano-octahedra with Rh and Mo dopants are highly active catalysts for the oxygen reduction reaction with excellent stability and shape integrity. We investigate the morphological, structural, and compositional evolution during stability testing.![]()
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Affiliation(s)
- Elisabeth Hornberger
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Malte Klingenhof
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Shlomi Polani
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Paul Paciok
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Attila Kormányos
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, 91058 Erlangen, Germany
| | - Raphaël Chattot
- ID 31 Beamline, BP 220, European Synchrotron Radiation Facility, 38043 Grenoble, France
| | - Katherine E. MacArthur
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Xingli Wang
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Lujin Pan
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Jakub Drnec
- ID 31 Beamline, BP 220, European Synchrotron Radiation Facility, 38043 Grenoble, France
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich GmbH, 91058 Erlangen, Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Rafal E. Dunin-Borkowski
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Peter Strasser
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
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5
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Polani S, MacArthur KE, Klingenhof M, Wang X, Paciok P, Pan L, Feng Q, Kormányos A, Cherevko S, Heggen M, Strasser P. Size and Composition Dependence of Oxygen Reduction Reaction Catalytic Activities of Mo-Doped PtNi/C Octahedral Nanocrystals. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01761] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shlomi Polani
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Katherine E. MacArthur
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Malte Klingenhof
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Xingli Wang
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Paul Paciok
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Lujin Pan
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Quanchen Feng
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Attila Kormányos
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
| | - Marc Heggen
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Peter Strasser
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
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6
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Köwitsch N, Thoni L, Klemmed B, Benad A, Paciok P, Heggen M, Köwitsch I, Mehring M, Eychmüller A, Armbrüster M. Proving a Paradigm in Methanol Steam Reforming: Catalytically Highly Selective InxPdy/In2O3 Interfaces. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04073] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicolas Köwitsch
- Faculty of Natural Sciences, Institute of Chemistry, Materials for Innovative Energy Concepts, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Lukas Thoni
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, Dresden 01062, Germany
| | - Benjamin Klemmed
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, Dresden 01062, Germany
| | - Albrecht Benad
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, Dresden 01062, Germany
| | - Paul Paciok
- Ernst Ruska-Centrum, Forschungszentrum Jülich, Jülich 52425, Germany
| | - Marc Heggen
- Ernst Ruska-Centrum, Forschungszentrum Jülich, Jülich 52425, Germany
| | - Isabel Köwitsch
- Faculty of Natural Sciences, Institute of Chemistry, Coordination Chemistry, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Michael Mehring
- Faculty of Natural Sciences, Institute of Chemistry, Coordination Chemistry, Technische Universität Chemnitz, Chemnitz 09107, Germany
| | - Alexander Eychmüller
- Physical Chemistry, Technische Universität Dresden, Bergstr. 66b, Dresden 01062, Germany
| | - Marc Armbrüster
- Faculty of Natural Sciences, Institute of Chemistry, Materials for Innovative Energy Concepts, Technische Universität Chemnitz, Chemnitz 09107, Germany
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7
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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. Nat Mater 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] [What about the content of this article? (0)] [Affiliation(s)] [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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8
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Leffler VB, Mayr L, Paciok P, Du H, Dunin-Borkowski RE, Dulle M, Förster S. Controlled Assembly of Block Copolymer Coated Nanoparticles in 2D Arrays. Angew Chem Int Ed Engl 2019; 58:8541-8545. [PMID: 31081290 DOI: 10.1002/anie.201901913] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Indexed: 11/12/2022]
Abstract
The defined assembly of nanoparticles (NPs) in polymer matrices is an important prerequisite for next-generation functional materials. A promising approach to control NP positions in polymer matrices at the nanometer scale is the use of block copolymers. It allows the selective deposition of NPs in nanodomains, but the final defined and ordered positioning of the NPs within the domains has not been possible. This can now be achieved by coating NPs with block copolymers. The self-assembly of block copolymer-coated NPs directly leads to ordered microdomains containing ordered NP arrays with exactly one NP per unit cell. By variation of the grafting density, the inter-nanoparticle distance can be controlled from direct NP surface contact to surface separations of several nanometers, determined by the thickness of the polymer shell. The method can be applied to a wide variety of block copolymers and NPs and is thus suitable for a broad range of applications.
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Affiliation(s)
- Vanessa B Leffler
- JCNS-1/ ICS-1, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Institute of Physical Chemistry, RWTH Aachen University, 52074, Aachen, Germany
| | - Lina Mayr
- Physikalische Chemie I, Universität Bayreuth, Universitätsstr. 30, 95440, Bayreuth, Germany
| | - Paul Paciok
- ER-C-1/ PGI-5, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Hongchu Du
- ER-C-2, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,GFE, RWTH Aachen University, 52074, Aachen, Germany
| | | | - Martin Dulle
- JCNS-1/ ICS-1, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Stephan Förster
- JCNS-1/ ICS-1, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Institute of Physical Chemistry, RWTH Aachen University, 52074, Aachen, Germany
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9
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Leffler VB, Mayr L, Paciok P, Du H, Dunin‐Borkowski RE, Dulle M, Förster S. Controlled Assembly of Block Copolymer Coated Nanoparticles in 2D Arrays. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vanessa B. Leffler
- JCNS-1/ ICS-1Forschungszentrum Jülich GmbH 52425 Jülich Germany
- Institute of Physical ChemistryRWTH Aachen University 52074 Aachen Germany
| | - Lina Mayr
- Physikalische Chemie IUniversität Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Paul Paciok
- ER-C-1/ PGI-5Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Hongchu Du
- ER-C-2Forschungszentrum Jülich GmbH 52425 Jülich Germany
- GFERWTH Aachen University 52074 Aachen Germany
| | | | - Martin Dulle
- JCNS-1/ ICS-1Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Stephan Förster
- JCNS-1/ ICS-1Forschungszentrum Jülich GmbH 52425 Jülich Germany
- Institute of Physical ChemistryRWTH Aachen University 52074 Aachen Germany
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10
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Glüsen A, Dionigi F, Paciok P, Heggen M, Müller M, Gan L, Strasser P, Dunin-Borkowski RE, Stolten D. Dealloyed PtNi-Core–Shell Nanocatalysts Enable Significant Lowering of Pt Electrode Content in Direct Methanol Fuel Cells. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04883] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andreas Glüsen
- Institute of Energy and Climate Research IEK-3: Electrochemical Process Engineering, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Fabio Dionigi
- The Electrochemical Energy, Catalysis and Materials Group, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Paul Paciok
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Marc Heggen
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Martin Müller
- Institute of Energy and Climate Research IEK-3: Electrochemical Process Engineering, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Lin Gan
- Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Peter Strasser
- The Electrochemical Energy, Catalysis and Materials Group, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Rafal E. Dunin-Borkowski
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Detlef Stolten
- Institute of Energy and Climate Research IEK-3: Electrochemical Process Engineering, Forschungszentrum Jülich, 52425 Jülich, Germany
- Chair for Fuel Cells, RWTH Aachen University, 52072 Aachen, Germany
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11
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Poidevin C, Paciok P, Heggen M, Auer AA. High resolution transmission electron microscopy and electronic structure theory investigation of platinum nanoparticles on carbon black. J Chem Phys 2019; 150:041705. [DOI: 10.1063/1.5047666] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Corentin Poidevin
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany
| | - Paul Paciok
- Ernst Ruska-Centre for Microscopy and Spectroscopy With Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy With Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Alexander A. Auer
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany
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12
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Görlin M, Chernev P, Paciok P, Tai CW, Ferreira de Araújo J, Reier T, Heggen M, Dunin-Borkowski R, Strasser P, Dau H. Formation of unexpectedly active Ni–Fe oxygen evolution electrocatalysts by physically mixing Ni and Fe oxyhydroxides. Chem Commun (Camb) 2019; 55:818-821. [DOI: 10.1039/c8cc06410e] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Physically mixing distinct Ni(OH)2and Fe(OOH) particles leads to formation of highly active “physically mixed” Ni + Fe catalysts with atomically intermixed Ni–(O)–Fe sites.
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Affiliation(s)
- Mikaela Görlin
- Department of Physics
- Free University of Berlin
- 14195 Berlin
- Germany
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory
| | - Petko Chernev
- Department of Physics
- Free University of Berlin
- 14195 Berlin
- Germany
| | - Paul Paciok
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons
- Forschungszentrum Jülich
- Jülich
- Germany
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry
- Stockholm University
- Sweden
| | - Jorge Ferreira de Araújo
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory
- Department of Chemistry
- Technical University of Berlin
- 10623 Berlin
- Germany
| | - Tobias Reier
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory
- Department of Chemistry
- Technical University of Berlin
- 10623 Berlin
- Germany
| | - Marc Heggen
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons
- Forschungszentrum Jülich
- Jülich
- Germany
| | - Rafal Dunin-Borkowski
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons
- Forschungszentrum Jülich
- Jülich
- Germany
| | - Peter Strasser
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory
- Department of Chemistry
- Technical University of Berlin
- 10623 Berlin
- Germany
| | - Holger Dau
- Department of Physics
- Free University of Berlin
- 14195 Berlin
- Germany
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13
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Knossalla J, Paciok P, Göhl D, Jalalpoor D, Pizzutilo E, Mingers AM, Heggen M, Dunin-Borkowski RE, Mayrhofer KJJ, Schüth F, Ledendecker M. Shape-Controlled Nanoparticles in Pore-Confined Space. J Am Chem Soc 2018; 140:15684-15689. [DOI: 10.1021/jacs.8b07868] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Johannes Knossalla
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Paul Paciok
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Daniel Göhl
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany
| | - Daniel Jalalpoor
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Enrico Pizzutilo
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany
| | - Andrea M. Mingers
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany
| | - Marc Heggen
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Rafal E. Dunin-Borkowski
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Karl J. J. Mayrhofer
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany
- Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Egerlandstr. 3, 91058 Erlangen, Germany
- Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany
| | - Ferdi Schüth
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Marc Ledendecker
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany
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