1
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Schilling M, Eifert L, Köble K, Jaugstetter M, Bevilacqua N, Fahy KF, Tschulik K, Bazylak A, Zeis R. Investigating the Influence of Treatments on Carbon Felts for Vanadium Redox Flow Batteries. ChemSusChem 2024; 17:e202301063. [PMID: 37671901 DOI: 10.1002/cssc.202301063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/07/2023]
Abstract
Vanadium redox flow battery (VRFB) electrodes face challenges related to their long-term operation. We investigated different electrode treatments mimicking the aging processes during operation, including thermal activation, aging, soaking, and storing. Several characterization techniques were used to deepen the understanding of the treatment of carbon felts. Synchrotron X-ray imaging, electrochemical impedance spectroscopy (EIS) with the distribution of relaxation times analysis, and dynamic vapor sorption (DVS) revealed differences between the wettability of felts. The bulk saturation after electrolyte injection into the carbon felts significantly differed from 8 % to 96 %. DVS revealed differences in the sorption/desorption behavior of carbon felt ranging from a slight change of 0.8 wt % to over 100 wt %. Additionally, the interactions between the water vapor and the sample change from type V to type H2. After treatment, morphology changes were observed by atomic force microscopy and scanning electron microscopy. Cyclic voltammetry and EIS were used to probe the electrochemical performance, revealing different catalytic activities and transport-related impedances for the treated samples. These investigations are crucial for understanding the effects of treatments on the performance and optimizing materials for long-term operation.
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Affiliation(s)
- Monja Schilling
- Helmholtz Institute Ulm, Karlsruhe Institute of Technology, Helmholtzstraße 11, 89081, Ulm, Germany
| | - László Eifert
- Helmholtz Institute Ulm, Karlsruhe Institute of Technology, Helmholtzstraße 11, 89081, Ulm, Germany
| | - Kerstin Köble
- Helmholtz Institute Ulm, Karlsruhe Institute of Technology, Helmholtzstraße 11, 89081, Ulm, Germany
| | - Maximilian Jaugstetter
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Nico Bevilacqua
- Helmholtz Institute Ulm, Karlsruhe Institute of Technology, Helmholtzstraße 11, 89081, Ulm, Germany
| | - Kieran F Fahy
- Faculty of Applied Science & Engineering, Department of Mechanical & Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Aimy Bazylak
- Faculty of Applied Science & Engineering, Department of Mechanical & Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada
| | - Roswitha Zeis
- Faculty of Engineering, Department of Electrical, Electronics, Communication Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstraße 9, 91058, Erlangen, Germany
- Helmholtz Institute Ulm, Karlsruhe Institute of Technology, Helmholtzstraße 11, 89081, Ulm, Germany
- Faculty of Applied Science & Engineering, Department of Mechanical & Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada
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2
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Furthmann N, Bader V, Angersbach L, Blusch A, Goel S, Sánchez-Vicente A, Krause LJ, Chaban SA, Grover P, Trinkaus VA, van Well EM, Jaugstetter M, Tschulik K, Damgaard RB, Saft C, Ellrichmann G, Gold R, Koch A, Englert B, Westenberger A, Klein C, Jungbluth L, Sachse C, Behrends C, Glatzel M, Hartl FU, Nakamura K, Christine CW, Huang EJ, Tatzelt J, Winklhofer KF. NEMO reshapes the α-Synuclein aggregate interface and acts as an autophagy adapter by co-condensation with p62. Nat Commun 2023; 14:8368. [PMID: 38114471 PMCID: PMC10730909 DOI: 10.1038/s41467-023-44033-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 11/28/2023] [Indexed: 12/21/2023] Open
Abstract
NEMO is a ubiquitin-binding protein which regulates canonical NF-κB pathway activation in innate immune signaling, cell death regulation and host-pathogen interactions. Here we identify an NF-κB-independent function of NEMO in proteostasis regulation by promoting autophagosomal clearance of protein aggregates. NEMO-deficient cells accumulate misfolded proteins upon proteotoxic stress and are vulnerable to proteostasis challenges. Moreover, a patient with a mutation in the NEMO-encoding IKBKG gene resulting in defective binding of NEMO to linear ubiquitin chains, developed a widespread mixed brain proteinopathy, including α-synuclein, tau and TDP-43 pathology. NEMO amplifies linear ubiquitylation at α-synuclein aggregates and promotes the local concentration of p62 into foci. In vitro, NEMO lowers the threshold concentrations required for ubiquitin-dependent phase transition of p62. In summary, NEMO reshapes the aggregate surface for efficient autophagosomal clearance by providing a mobile phase at the aggregate interphase favoring co-condensation with p62.
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Affiliation(s)
- Nikolas Furthmann
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Verian Bader
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
- Department Biochemistry of Neurodegenerative Diseases, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Lena Angersbach
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Alina Blusch
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, 44791, Bochum, Germany
| | - Simran Goel
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Ana Sánchez-Vicente
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Laura J Krause
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
- Cluster of Excellence RESOLV, 44801, Bochum, Germany
| | - Sarah A Chaban
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Prerna Grover
- Department Biochemistry of Neurodegenerative Diseases, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Victoria A Trinkaus
- Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Eva M van Well
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Maximilian Jaugstetter
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Kristina Tschulik
- Cluster of Excellence RESOLV, 44801, Bochum, Germany
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801, Bochum, Germany
| | - Rune Busk Damgaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Carsten Saft
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, 44791, Bochum, Germany
| | - Gisa Ellrichmann
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, 44791, Bochum, Germany
- Department of Neurology, Klinikum Dortmund, University Witten/Herdecke, 44135, Dortmund, Germany
| | - Ralf Gold
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, 44791, Bochum, Germany
| | - Arend Koch
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neuropathology, Charitéplatz 1, 10117, Berlin, Germany
| | - Benjamin Englert
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neuropathology, Charitéplatz 1, 10117, Berlin, Germany
- Center for Neuropathology and Prion Research, Ludwig-Maximilians University, 81377, Munich, Germany
| | - Ana Westenberger
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Lisa Jungbluth
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons (ER-C-3/Structural Biology), Forschungszentrum Jülich, Jülich, Germany
- Institute for Biological Information Processing (IBI-6/Cellular Structural Biology), Forschungszentrum Jülich, Jülich, Germany
| | - Carsten Sachse
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons (ER-C-3/Structural Biology), Forschungszentrum Jülich, Jülich, Germany
- Institute for Biological Information Processing (IBI-6/Cellular Structural Biology), Forschungszentrum Jülich, Jülich, Germany
- Department of Biology, Heinrich Heine University, Düsseldorf, Germany
| | - Christian Behrends
- Munich Cluster for Systems Neurology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Markus Glatzel
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20251, Hamburg, Germany
| | - F Ulrich Hartl
- Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany
| | - Ken Nakamura
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA, USA
- Department of Neurology, University of California, San Francisco, CA, USA
| | - Chadwick W Christine
- Department of Neurology, University of California, San Francisco, CA, USA
- Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Eric J Huang
- Department of Neurology, University of California, San Francisco, CA, USA
- Department of Pathology, University of California, San Francisco, CA, USA
| | - Jörg Tatzelt
- Department Biochemistry of Neurodegenerative Diseases, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany
- Cluster of Excellence RESOLV, 44801, Bochum, Germany
| | - Konstanze F Winklhofer
- Department Molecular Cell Biology, Institute of Biochemistry and Pathobiochemistry, Ruhr University Bochum, 44801, Bochum, Germany.
- Cluster of Excellence RESOLV, 44801, Bochum, Germany.
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3
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Bondue CJ, Spallek M, Sobota L, Tschulik K. Electrochemical Aldehyde Oxidation at Gold Electrodes: gem-Diol, non-Hydrated Aldehyde, and Diolate as Electroactive Species. ChemSusChem 2023; 16:e202300685. [PMID: 37477393 DOI: 10.1002/cssc.202300685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/22/2023]
Abstract
To date the electroactive species of selective aldehyde oxidation to carboxylates at gold electrodes is usually assumed to be the diolate. It forms with high concentration only in very alkaline electrolytes, when OH- binds to the carbonyl carbon atom. Accordingly, the electrochemical upgrading of biomass-derived aldehydes to carboxylates is believed to be limited to very alkaline electrolytes at many electrode materials. However, OH- -induced aldehyde decomposition in these electrolytes prevents application of electrochemical aldehyde oxidation for the sustainable upgrading of biomass to value-added chemicals at industrial scale. Here, we demonstrate the successful oxidation of aliphatic aldehydes at a rotating gold electrode at pH 12, where only 1 % of the aldehyde resides as the diolate species. This concentration is too small to account for the observed current, which shows that also other aldehyde species (i. e., the geminal diol and the non-hydrated aldehyde) are electroactive. This insight allows developing strategies to omit aldehyde decomposition while achieving high current densities for the selective aldehyde oxidation, making its future industrial application viable.
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Affiliation(s)
- Christoph J Bondue
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, 44801, Germany
| | - Marius Spallek
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, 44801, Germany
| | - Lennart Sobota
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, 44801, Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, 44801, Germany
- Max-Planck-Institut für Eisenforschung GmbH, 40237, Düsseldorf, Germany
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4
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Ma C, Schrage CA, Gretz J, Akhtar A, Sistemich L, Schnitzler L, Li H, Tschulik K, Flavel BS, Kruss S. Stochastic Formation of Quantum Defects in Carbon Nanotubes. ACS Nano 2023; 17:15989-15998. [PMID: 37527201 DOI: 10.1021/acsnano.3c04314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Small perturbations in the structure of materials significantly affect their properties. One example is single wall carbon nanotubes (SWCNTs), which exhibit chirality-dependent near-infrared (NIR) fluorescence. They can be modified with quantum defects through the reaction with diazonium salts, and the number or distribution of these defects determines their photophysics. However, the presence of multiple chiralities in typical SWCNT samples complicates the identification of defect-related emission features. Here, we show that quantum defects do not affect aqueous two-phase extraction (ATPE) of different SWCNT chiralities into different phases, which suggests low numbers of defects. For bulk samples, the bandgap emission (E11) of monochiral (6,5)-SWCNTs decreases, and the defect-related emission feature (E11*) increases with diazonium salt concentration and represents a proxy for the defect number. The high purity of monochiral samples from ATPE allows us to image NIR fluorescence contributions (E11 = 986 nm and E11* = 1140 nm) on the single SWCNT level. Interestingly, we observe a stochastic (Poisson) distribution of quantum defects. SWCNTs have most likely one to three defects (for low to high (bulk) quantum defect densities). Additionally, we verify this number by following single reaction events that appear as discrete steps in the temporal fluorescence traces. We thereby count single reactions via NIR imaging and demonstrate that stochasticity plays a crucial role in the optical properties of SWCNTs. These results show that there can be a large discrepancy between ensemble and single particle experiments/properties of nanomaterials.
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Affiliation(s)
- Chen Ma
- Department of Chemistry, Ruhr-University Bochum, Bochum 44801, Germany
| | | | - Juliana Gretz
- Department of Chemistry, Ruhr-University Bochum, Bochum 44801, Germany
| | - Anas Akhtar
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Bochum 44801, Germany
| | - Linda Sistemich
- Department of Chemistry, Ruhr-University Bochum, Bochum 44801, Germany
| | - Lena Schnitzler
- Department of Chemistry, Ruhr-University Bochum, Bochum 44801, Germany
| | - Han Li
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Karlsruhe 76344, Germany
| | - Kristina Tschulik
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Bochum 44801, Germany
| | - Benjamin S Flavel
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Karlsruhe 76344, Germany
| | - Sebastian Kruss
- Department of Chemistry, Ruhr-University Bochum, Bochum 44801, Germany
- Fraunhofer Institute for Microelectronic Circuits and Systems, Duisburg 47057, Germany
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5
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Bondue C, Koper MTM, Tschulik K. A Versatile and Easy Method to Calibrate a Two-Compartment Flow Cell for Differential Electrochemical Mass Spectrometry Measurements. ACS Meas Sci Au 2023; 3:277-286. [PMID: 37600459 PMCID: PMC10436368 DOI: 10.1021/acsmeasuresciau.3c00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/08/2023] [Accepted: 05/08/2023] [Indexed: 08/22/2023]
Abstract
Online techniques for the quantitative analysis of reaction products have many advantages over offline methods. However, owing to the low product formation rates in electrochemical reactions, few of these techniques can be coupled to electrochemistry. An exception is differential electrochemical mass spectrometry (DEMS), which gains increasing popularity not least because of its high time resolution in the sub-second regime. DEMS is often combined with a dual thin-layer cell (a two-compartment flow cell), which helps to mitigate a number of problems that arise due to the existence of a vacuum|electrolyte interface. However, the efficiency with which this cell transfers volatile reaction products into the vacuum of the mass spectrometer is far below 100%. Therefore, a calibration constant that considers not only the sensitivity of the DEMS setup but also the transfer efficiency of the dual thin-layer cell is needed to translate the signals observed in the mass spectrometer into electrochemical product formation rates. However, it can be challenging or impossible to design an experiment that yields such a calibration constant. Here, we show that the transfer efficiency of the dual thin-layer cell depends on the diffusion coefficient of the analyte. Based on this observation, we suggest a two-point calibration method. That is, a plot of the logarithm of the transfer efficiencies determined for H2 and O2 versus the logarithm of their diffusion coefficients defines a straight line. Extrapolation of this line to the diffusion coefficient of another analyte yields a good estimate of its transfer efficiency. This is a versatile and easy calibration method, because the transfer efficiencies of H2 and O2 are readily accessible for a large range of electrode-electrolyte combinations.
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Affiliation(s)
- Christoph
J. Bondue
- Faculty
of Chemistry and Biochemistry, Laboratory of Electrochemistry &
Nanoscale Materials, Ruhr-University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
| | - Marc T. M. Koper
- Leiden
Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Kristina Tschulik
- Faculty
of Chemistry and Biochemistry, Laboratory of Electrochemistry &
Nanoscale Materials, Ruhr-University Bochum, Universitätsstraße 150, 44780 Bochum, Germany
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6
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Hill B, Abraham S, Akhtar A, Selvaggio G, Tschulik K, Kruss S. Surfactant assisted exfoliation of near infrared fluorescent silicate nanosheets. RSC Adv 2023; 13:20916-20925. [PMID: 37441047 PMCID: PMC10334366 DOI: 10.1039/d3ra04083f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Fluorophores that emit light in the near infrared (NIR) are advantageous in photonics and imaging due to minimal light scattering, absorption, phototoxicity and autofluorescence in this spectral region. The layered silicate Egyptian blue (CaCuSi4O10) emits as a bulk material bright and stable fluorescence in the NIR and is a promising NIR fluorescent material for (bio)photonics. Here, we demonstrate a surfactant-based (mild) exfoliation procedure to produce nanosheets (EB-NS) of high monodispersity, heights down to 1 nm and diameters <20 nm in large quantities. The approach combines planetary ball milling, surfactant assisted bath sonication and centrifugation steps. It avoids the impurities that are typical for the harsh conditions of tip-sonication. Several solvents and surfactants were tested and we found the highest yield for sodium dodecyl benzyl sulfate (SDBS) and water. The NIR fluorescence emission (λem ≈ 930-940 nm) is not affected by this procedure, is extremely stable and is not affected by quenchers. This enables the use of EB-NS for macroscopic patterning/barcoding of materials in the NIR. In summary, we present a simple and mild route to NIR fluorescent nanosheets that promise high potential as NIR fluorophores for optical applications.
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Affiliation(s)
- Bjoern Hill
- Department of Chemistry, Ruhr Universität Bochum 44801 Bochum Germany
| | - Smitha Abraham
- Department of Chemistry, Ruhr Universität Bochum 44801 Bochum Germany
| | - Anas Akhtar
- Analytical Chemistry II, Ruhr Universität Bochum 44801 Bochum
| | | | | | - Sebastian Kruss
- Department of Chemistry, Ruhr Universität Bochum 44801 Bochum Germany
- Fraunhofer Institute for Microelectronic Circuits and Systems 47057 Duisburg Germany
- Center for Nanointegration Duisburg-Essen (CENIDE) 47057 Duisburg Germany
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7
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Rabe A, Jaugstetter M, Hiege F, Cosanne N, Ortega KF, Linnemann J, Tschulik K, Behrens M. Tailoring Pore Size and Catalytic Activity in Cobalt Iron Layered Double Hydroxides and Spinels by Microemulsion-Assisted pH-Controlled Co-Precipitation. ChemSusChem 2023; 16:e202202015. [PMID: 36651237 DOI: 10.1002/cssc.202202015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/07/2023] [Accepted: 01/17/2023] [Indexed: 05/20/2023]
Abstract
Cobalt iron containing layered double hydroxides (LDHs) and spinels are promising catalysts for the electrochemical oxygen evolution reaction (OER). Towards development of better performing catalysts, the precise tuning of mesostructural features such as pore size is desirable, but often hard to achieve. Herein, a computer-controlled microemulsion-assisted co-precipitation (MACP) method at constant pH is established and compared to conventional co-precipitation. With MACP, the particle growth is limited and through variation of the constant pH during synthesis the pore size of the as-prepared catalysts is controlled, generating materials for the systematic investigation of confinement effects during OER. At a threshold pore size, overpotential increased significantly. Electrochemical impedance spectroscopy (EIS) indicated a change in OER mechanism, involving the oxygen release step. It is assumed that in smaller pores the critical radius for gas bubble formation is not met and therefore a smaller charge-transfer resistance is observed for medium frequencies.
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Affiliation(s)
- Anna Rabe
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141, Essen, Germany
- Institute for Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Maximilian Jaugstetter
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, 44801, Bochum, Germany
| | - Felix Hiege
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, 44801, Bochum, Germany
| | - Nicolas Cosanne
- Institute for Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Klaus Friedel Ortega
- Institute for Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Julia Linnemann
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, 44801, Bochum, Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, 44801, Bochum, Germany
| | - Malte Behrens
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141, Essen, Germany
- Institute for Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
- Ertl Center for Electrochemistry and Catalysis, Gwangju Institute of Science (GIST), 123 Cheomdan-gwagiro (Oryang-dong), Buk-gu, Gwangju, 500-712, South Korea
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8
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Luan C, Angona J, BalaKrishnan A, Corva M, Hosseini P, Heidelmann M, Hagemann U, Tetteh EB, Schuhmann W, Tschulik K, Li T. Linking Composition, Structure and Thickness of CoOOH to Oxygen Evolution Reaction Activity by Correlative Microscopy. Angew Chem Int Ed Engl 2023:e202305982. [PMID: 37178313 DOI: 10.1002/anie.202305982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/28/2023] [Revised: 05/12/2023] [Accepted: 05/12/2023] [Indexed: 05/15/2023]
Abstract
The role of β-CoOOH crystallographic orientations in catalytic activity for the oxygen evolution reaction (OER) remains elusive. We combine correlative electron backscatter diffraction/scanning electrochemical cell microscopy with X-ray photoelectron spectroscopy, transmission electron microscopy, and atom probe tomography to establish the structure-activity relationships of various faceted β-CoOOH formed on a Co microelectrode under OER conditions. We reveal that ~6 nm β-CoOOH(01 0), grown on [ 0]-oriented Co, exhibits higher OER activity than ~3 nm β-CoOOH(10 3) or ~6 nm β-CoOOH(0006) formed on [02 - and [0001]-oriented Co, respectively. This arises from higher amounts of incorporated hydroxyl ions and more easily reducible CoIII-O sites present in β-CoOOH(01 0) than those in the latter two oxyhydroxide facets. Our correlative multimodal approach shows great promise in linking local activity with atomic-scale details of structure, thickness and composition of active species, which opens opportunities to design pre-catalysts with preferred defects that promote the formation of the most active OER species.
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Affiliation(s)
- Chenglong Luan
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Institute for Materials, GERMANY
| | - Johanna Angona
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Arjun BalaKrishnan
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Institute for Materials, GERMANY
| | - Manuel Corva
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Pouya Hosseini
- Max-Planck-Institut für Eisenforschung GmbH: Max-Planck-Institut fur Eisenforschung GmbH, Max-Planck-Institut für Eisenforschung GmbH: Max-Planck-Institut fur Eisenforschung GmbH, GERMANY
| | - Markus Heidelmann
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen, Interdisciplinary Center for Analytics on the Nanoscale, GERMANY
| | - Ulrich Hagemann
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen, Interdisciplinary Center for Analytics on the Nanoscale, GERMANY
| | - Emmanuel Batsa Tetteh
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Wolfgang Schuhmann
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Kristina Tschulik
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum, Faculty of Chemistry and Biochemistry, GERMANY
| | - Tong Li
- Ruhr University Bochum: Ruhr-Universitat Bochum, Institute for Materials, Universitätsstr. 150, 44801, Bochum, GERMANY
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9
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Luan C, Corva M, Hagemann U, Wang H, Heidelmann M, Tschulik K, Li T. Atomic-Scale Insights into Morphological, Structural, and Compositional Evolution of CoOOH during Oxygen Evolution Reaction. ACS Catal 2023. [DOI: 10.1021/acscatal.2c03903] [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: 01/11/2023]
Affiliation(s)
- Chenglong Luan
- Institute for Materials, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Manuel Corva
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Ulrich Hagemann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN) and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Carl-Benz-Straße 199, 47057 Duisburg, Germany
| | - Hongcai Wang
- Institute for Materials, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Markus Heidelmann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN) and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Carl-Benz-Straße 199, 47057 Duisburg, Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany
| | - Tong Li
- Institute for Materials, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
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10
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Piontek S, Naujoks D, Tabassum T, DelloStritto MJ, Jaugstetter M, Hosseini P, Corva M, Ludwig A, Tschulik K, Klein ML, Petersen PB. Probing the Gold/Water Interface with Surface-Specific Spectroscopy. ACS Phys Chem Au 2023; 3:119-129. [PMID: 36718265 PMCID: PMC9881240 DOI: 10.1021/acsphyschemau.2c00044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/08/2022] [Accepted: 12/08/2022] [Indexed: 01/05/2023]
Abstract
Water is an integral component in electrochemistry, in the generation of the electric double layer, and in the propagation of the interfacial electric fields into the solution; however, probing the molecular-level structure of interfacial water near functioning electrode surfaces remains challenging. Due to the surface-specificity, sum-frequency-generation (SFG) spectroscopy offers an opportunity to investigate the structure of water near working electrochemical interfaces but probing the hydrogen-bonded structure of water at this buried electrode-electrolyte interface was thought to be impossible. Propagating the laser beams through the solvent leads to a large attenuation of the infrared light due to the absorption of water, and interrogating the interface by sending the laser beams through the electrode normally obscures the SFG spectra due to the large nonlinear response of conduction band electrons. Here, we show that the latter limitation is removed when the gold layer is thin. To demonstrate this, we prepared Au gradient films on CaF2 with a thickness between 0 and 8 nm. SFG spectra of the Au gradient films in contact with H2O and D2O demonstrate that resonant water SFG spectra can be obtained using Au films with a thickness of ∼2 nm or less. The measured spectra are distinctively different from the frequency-dependent Fresnel factors of the interface, suggesting that the features we observe in the OH stretching region indeed do not arise from the nonresonant response of the Au films. With the newfound ability to probe interfacial solvent structure at electrode/aqueous interfaces, we hope to provide insights into more efficient electrolyte composition and electrode design.
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Affiliation(s)
- Stefan
M. Piontek
- Faculty
of Chemistry and Biochemistry, Ruhr-Universität
Bochum, 44801 Bochum, Germany,Light
Conversion Inc., Vilnius City Municipality, Vilnius 10234, Lithuania
| | - Dennis Naujoks
- Faculty
of Mechanical Engineering, Institute for Materials and ZGH, Ruhr-Universität Bochum, 44801 Bochum, Germany
| | - Tadneem Tabassum
- Faculty
of Chemistry and Biochemistry, Ruhr-Universität
Bochum, 44801 Bochum, Germany
| | - Mark J. DelloStritto
- Institute
for Computational Molecular Science, Temple
University, Philadelphia, 19122 Pennsylvania, United States
| | | | - Pouya Hosseini
- Max-Planck-Institut
für Eisenforschung GmbH, 40237 Düsseldorf, Germany
| | - Manuel Corva
- Faculty
of Chemistry and Biochemistry, Ruhr-Universität
Bochum, 44801 Bochum, Germany
| | - Alfred Ludwig
- Faculty
of Mechanical Engineering, Institute for Materials and ZGH, Ruhr-Universität Bochum, 44801 Bochum, Germany
| | - Kristina Tschulik
- Faculty
of Chemistry and Biochemistry, Ruhr-Universität
Bochum, 44801 Bochum, Germany
| | - Michael L. Klein
- Institute
for Computational Molecular Science, Temple
University, Philadelphia, 19122 Pennsylvania, United States
| | - Poul B. Petersen
- Faculty
of Chemistry and Biochemistry, Ruhr-Universität
Bochum, 44801 Bochum, Germany,
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11
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Kanokkanchana K, Tschulik K. Electronic Circuit Simulations as a Tool to Understand Distorted Signals in Single-Entity Electrochemistry. J Phys Chem Lett 2022; 13:10120-10125. [PMID: 36269854 PMCID: PMC9639197 DOI: 10.1021/acs.jpclett.2c02720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Electrochemical analysis relies on precise measurement of electrical signals, yet the distortions caused by potentiostat circuitry and filtering are rarely addressed. Elucidation of these effects is essential for gaining insights behind sensitive low-current and short-duration electrochemical signals, e.g., in single-entity electrochemistry. We present a simulation approach utilizing the Electrical Simulation Program with Integrated Circuit Emphasis (SPICE), which is extensively used in electronic circuit simulations. As a proof-of-concept, we develop a universal electrical circuit model for single nanoparticle impact experiments, incorporating potentiostat and electronic filter circuitry. Considering these alterations, the experimentally observed transients of silver nanoparticle oxidation were consistently shorter and differently shaped than those predicted by established models. This reveals the existence of additional processes, e.g., migration, partial or asymmetric oxidation. These results highlight the SPICE approach's ability to provide valuable insights into processes occurring during single-entity electrochemistry, which can be applied to various electrochemical experiments, where signal distortions are inevitable.
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Affiliation(s)
- Kannasoot Kanokkanchana
- Chair
of Analytical Chemistry II, Faculty of Chemistry and Biochemistry,
ZEMOS 1.45, Ruhr University Bochum, Universitätsstraße 150, D-44780Bochum, Germany
| | - Kristina Tschulik
- Chair
of Analytical Chemistry II, Faculty of Chemistry and Biochemistry,
ZEMOS 1.45, Ruhr University Bochum, Universitätsstraße 150, D-44780Bochum, Germany
- Max-Planck-Institut
für Eisenforschung GmbH, Max-Planck-Straße 1, Düsseldorf40237, Germany
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12
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Corva M, Blanc N, Bondue CJ, Tschulik K. Differential Tafel Analysis: A Quick and Robust Tool to Inspect and Benchmark Charge Transfer in Electrocatalysis. ACS Catal 2022; 12:13805-13812. [DOI: 10.1021/acscatal.2c03581] [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] [Received: 07/22/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Manuel Corva
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum44780, Germany
| | - Niclas Blanc
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum44780, Germany
| | - Christoph J. Bondue
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum44780, Germany
| | - Kristina Tschulik
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum44780, Germany
- Max-Planck-Institut für Eisenforschung, Max-Planck-Straße 1, Düsseldorf40237, Germany
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13
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Rurainsky C, Nettler DR, Pahl T, Just A, Cignoni P, Kanokkanchana K, Tschulik K. Electrochemical Dealloying in a Magnetic Field – Tapping the Potential for Catalyst and Material Design. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Albrecht T, Cao XE, Chen D, Corva M, Edwards MA, Ewing A, Fornasaro S, Gooding JJ, Gundry L, Hirano-Iwata A, Jeffcoat G, Kamali AR, Kanoufi F, Lemay SG, Limani N, Linfield S, Liu X, Lu SM, Meloni GN, Tian Z, Tschulik K, Vakamulla Raghu SN, Wei H, Ying YL. Electrochemical data mining: from information to knowledge: general discussion. Faraday Discuss 2022; 233:58-76. [PMID: 35302149 DOI: 10.1039/d2fd90001g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Albrecht T, Bohn PW, Buckingham MA, Cao XE, Chen D, Chen Q, Corva M, Edwards MA, Kamali AR, Kanoufi F, Krause S, Linfield S, Liu X, Ma H, Mao BW, Pandey P, Tschulik K, Vakamulla Raghu SN, Walcarius A, Xiao L, Ying YL. State of the art energy conversion at the nanointerface: general discussion. Faraday Discuss 2022; 233:112-121. [PMID: 35302150 DOI: 10.1039/d2fd90002e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Abstract
Although the term 'confinement' regularly appears in electrochemical literature, elevated by continuous progression in the research of nanomaterials and nanostructures, up until today the various aspects of confinement considered in electrochemistry are rather scattered individual contributions outside the established disciplines in this field. Thanks to a number of highly original publications and the growing appreciation of confinement as an overarching link between different exciting new research strategies, 'electrochemistry under confinement' is the process of forming a research discipline of its own. To aid the development a coherent terminology and joint basic concepts, as crucial factors for this transformation, this review provides an overview on the different effects on electrochemical processes known to date that can be caused by confinement. It also suggests where boundaries to other effects, such as nano-effects could be drawn. To conceptualize the vast amount of research activities revolving around the main concepts of confinement, we define six types of confinement and select two of them to discuss the state of the art and anticipated future developments in more detail. The first type concerns nanochannel environments and their applications for electrodeposition and for electrochemical sensing. The second type covers the rather newly emerging field of colloidal single entity confinement in electrochemistry. In these contexts, we will for instance address the influence of confinement on the mass transport and electric field distributions and will link the associated changes in local species concentration or in the local driving force to altered reaction kinetics and product selectivity. Highlighting pioneering works and exciting recent developments, this educational review does not only aim at surveying and categorizing the state-of-the-art, but seeks to specifically point out future perspectives in the field of confinement-controlled electrochemistry.
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Affiliation(s)
- Maximilian Jaugstetter
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany.
| | - Niclas Blanc
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany.
| | - Markus Kratz
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany.
| | - Kristina Tschulik
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany.
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17
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Saw EN, Kanokkanchana K, Amin HMA, Tschulik K. Unravelling Anion Solvation in Water‐Alcohol Mixtures by Single Entity Electrochemistry. ChemElectroChem 2022. [DOI: 10.1002/celc.202200197] [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: 11/12/2022]
Affiliation(s)
- En Ning Saw
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Kannasoot Kanokkanchana
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Hatem M. A. Amin
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
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18
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Saw EN, Kanokkanchana K, Amin HMA, Tschulik K. Unravelling Anion Solvation in Water‐Alcohol Mixtures by Single Entity Electrochemistry. ChemElectroChem 2022. [DOI: 10.1002/celc.202200198] [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)
- En Ning Saw
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Kannasoot Kanokkanchana
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Hatem M. A. Amin
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
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19
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Azimzadeh Sani M, Pavlopoulos NG, Pezzotti S, Serva A, Cignoni P, Linnemann J, Salanne M, Gaigeot M, Tschulik K. Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular‐Level Insights into the Electrical Double Layer. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112679] [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: 11/09/2022]
Affiliation(s)
- Mahnaz Azimzadeh Sani
- Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum 44801 Bochum Germany
| | | | - Simone Pezzotti
- Physical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum 44780 Bochum Germany
| | - Alessandra Serva
- Sorbonne Université CNRS Physico-chimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX 75005 Paris France
| | - Paolo Cignoni
- Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum 44801 Bochum Germany
| | - Julia Linnemann
- Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum 44801 Bochum Germany
| | - Mathieu Salanne
- Sorbonne Université CNRS Physico-chimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX 75005 Paris France
- Institut Universitaire de France (IUF) 75231 Paris Cedex 05 France
| | | | - Kristina Tschulik
- Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum 44801 Bochum Germany
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20
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Sikes JC, Wonner K, Nicholson A, Cignoni P, Fritsch I, Tschulik K. Characterization of Nanoparticles in Diverse Mixtures Using Localized Surface Plasmon Resonance and Nanoparticle Tracking by Dark-Field Microscopy with Redox Magnetohydrodynamics Microfluidics. ACS Phys Chem Au 2022; 2:289-298. [PMID: 35915589 PMCID: PMC9335947 DOI: 10.1021/acsphyschemau.1c00046] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
![]()
Redox magnetohydrodynamics
(RMHD) microfluidics is coupled with
dark-field microscopy (DFM) to offer high-throughput single-nanoparticle
(NP) differentiation in situ and operando in a flowing mixture by localized surface plasmon resonance (LSPR)
and tracking of NPs. The color of the scattered light allows visualization
of the NPs below the diffraction limit. Their Brownian motion in 1-D
superimposed on and perpendicular to the RMHD trajectory yields their
diffusion coefficients. LSPR and diffusion coefficients provide two
orthogonal modalities for characterization where each depends on a
particle’s material composition, shape, size, and interactions
with the surrounding medium. RMHD coupled with DFM was demonstrated
on a mixture of 82 ± 9 nm silver and 140 ± 10 nm gold-coated
silica nanospheres. The two populations of NPs in the mixture were
identified by blue/green and orange/red LSPR and their scattering
intensity, respectively, and their sizes were further evaluated based
on their diffusion coefficients. RMHD microfluidics facilitates high-throughput
analysis by moving the sample solution across the wide field of view
absent of physical vibrations within the experimental cell. The well-controlled
pumping allows for a continuous, reversible, and uniform flow for
precise and simultaneous NP tracking of the Brownian motion. Additionally,
the amounts of nanomaterials required for the analysis are minimized
due to the elimination of an inlet and outlet. Several hundred individual
NPs were differentiated from each other in the mixture flowing in
forward and reverse directions. The ability to immediately reverse
the flow direction also facilitates re-analysis of the NPs, enabling
more precise sizing.
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Affiliation(s)
- Jazlynn C. Sikes
- University of Arkansas Department of Chemistry and Biochemistry, Fayetteville, Arkansas 72701, United States
| | - Kevin Wonner
- Ruhr University Bochum, Faculty of Chemistry and Biochemistry, Chair of Analytical Chemistry II, Bochum 44801, Germany
| | - Aaron Nicholson
- University of Arkansas Department of Chemistry and Biochemistry, Fayetteville, Arkansas 72701, United States
| | - Paolo Cignoni
- Ruhr University Bochum, Faculty of Chemistry and Biochemistry, Chair of Analytical Chemistry II, Bochum 44801, Germany
| | - Ingrid Fritsch
- University of Arkansas Department of Chemistry and Biochemistry, Fayetteville, Arkansas 72701, United States
| | - Kristina Tschulik
- Ruhr University Bochum, Faculty of Chemistry and Biochemistry, Chair of Analytical Chemistry II, Bochum 44801, Germany
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21
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Affiliation(s)
- En Ning Saw
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Kannasoot Kanokkanchana
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Hatem M. A. Amin
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry II Faculty of Chemistry and Biochemistry Ruhr University Bochum Bochum 44801 Germany
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22
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Caldara M, Lowdon JW, Rogosic R, Arreguin-Campos R, Jimenez-Monroy KL, Heidt B, Tschulik K, Cleij TJ, Diliën H, Eersels K, van Grinsven B. Thermal Detection of Glucose in Urine Using a Molecularly Imprinted Polymer as a Recognition Element. ACS Sens 2021; 6:4515-4525. [PMID: 34825565 PMCID: PMC8715537 DOI: 10.1021/acssensors.1c02223] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
Glucose bio-sensing
technologies have received increasing attention
in the last few decades, primarily due to the fundamental role that
glucose metabolism plays in diseases (e.g., diabetes). Molecularly
imprinted polymers (MIPs) could offer an alternative means of analysis
to a field that is traditionally dominated by enzyme-based devices,
posing superior chemical stability, cost-effectiveness, and ease of
fabrication. Their integration into sensing devices as recognition
elements has been extensively studied with different readout methods
such as quartz-crystal microbalance or impedance spectroscopy. In
this work, a dummy imprinting approach is introduced, describing the
synthesis
and optimization of a MIP toward the sensing of glucose. Integration
of this polymer into a thermally conductive receptor layer was achieved
by micro-contact deposition. In essence, the MIP particles are pressed
into a polyvinyl chloride adhesive layer using a polydimethylsiloxane
stamp. The prepared layer is then evaluated with the so-called heat-transfer
method, allowing the determination of the specificity and the sensitivity
of the receptor layer. Furthermore, the selectivity was assessed by
analyzing the thermal response after infusion with increasing concentrations
of different saccharide analogues in phosphate-buffered saline (PBS).
The obtained results show a linear range of the sensor of 0.0194–0.3300
mM for the detection of glucose in PBS. Finally, a potential application
of the sensor was demonstrated by exposing the receptor layer to increasing
concentrations of glucose in human urine samples, demonstrating a
linear range of 0.0444–0.3300 mM. The results obtained in this
paper highlight the applicability of the sensor both in terms of non-invasive
glucose monitoring and for the analysis of food samples.
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Affiliation(s)
- Manlio Caldara
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Joseph W. Lowdon
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Renato Rogosic
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Rocio Arreguin-Campos
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Kathia L. Jimenez-Monroy
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Benjamin Heidt
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, Universitätsstr. 150, ZEMOS, 44801 Bochum, Germany
| | - Thomas J. Cleij
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Hanne Diliën
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Kasper Eersels
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Bart van Grinsven
- Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
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23
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Najafishirtari S, Friedel Ortega K, Douthwaite M, Pattisson S, Hutchings GJ, Bondue CJ, Tschulik K, Waffel D, Peng B, Deitermann M, Busser GW, Muhler M, Behrens M. A Perspective on Heterogeneous Catalysts for the Selective Oxidation of Alcohols. Chemistry 2021; 27:16809-16833. [PMID: 34596294 PMCID: PMC9292687 DOI: 10.1002/chem.202102868] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Indexed: 01/15/2023]
Abstract
Selective oxidation of higher alcohols using heterogeneous catalysts is an important reaction in the synthesis of fine chemicals with added value. Though the process for primary alcohol oxidation is industrially established, there is still a lack of fundamental understanding considering the complexity of the catalysts and their dynamics under reaction conditions, especially when higher alcohols and liquid‐phase reaction media are involved. Additionally, new materials should be developed offering higher activity, selectivity, and stability. This can be achieved by unraveling the structure–performance correlations of these catalysts under reaction conditions. In this regard, researchers are encouraged to develop more advanced characterization techniques to address the complex interplay between the solid surface, the dissolved reactants, and the solvent. In this mini‐review, we report some of the most important approaches taken in the field and give a perspective on how to tackle the complex challenges for different approaches in alcohol oxidation while providing insight into the remaining challenges.
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Affiliation(s)
- Sharif Najafishirtari
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Carl-Benz-Straße 199, 47057, Duisburg, Germany
| | - Klaus Friedel Ortega
- Institute of Inorganic Chemistry, Kiel University, Max-Eyth-Straße 2, 24118, Kiel, Germany
| | - Mark Douthwaite
- Cardiff Catalysis Institute, Cardiff University, CF10 3AT, Cardiff, United Kingdom
| | - Samuel Pattisson
- Cardiff Catalysis Institute, Cardiff University, CF10 3AT, Cardiff, United Kingdom
| | - Graham J Hutchings
- Cardiff Catalysis Institute, Cardiff University, CF10 3AT, Cardiff, United Kingdom
| | - Christoph J Bondue
- Faculty of Chemistry and Biochemistry, Lab. of Electrochemistry & Nanoscale Materials, Ruhr-University Bochum, Universitätsstraße. 150, ZEMOS 1.41, 44780, Bochum, Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Lab. of Electrochemistry & Nanoscale Materials, Ruhr-University Bochum, Universitätsstraße. 150, ZEMOS 1.41, 44780, Bochum, Germany
| | - Daniel Waffel
- Faculty of Chemistry and Biochemistry, Lab. of Industrial Chemistry, Ruhr-University Bochum, Universitätsstraße 150, NBCF 04 / 690, 44780, Bochum, Germany
| | - Baoxiang Peng
- Faculty of Chemistry and Biochemistry, Lab. of Industrial Chemistry, Ruhr-University Bochum, Universitätsstraße 150, NBCF 04 / 690, 44780, Bochum, Germany
| | - Michel Deitermann
- Faculty of Chemistry and Biochemistry, Lab. of Industrial Chemistry, Ruhr-University Bochum, Universitätsstraße 150, NBCF 04 / 690, 44780, Bochum, Germany
| | - G Wilma Busser
- Faculty of Chemistry and Biochemistry, Lab. of Industrial Chemistry, Ruhr-University Bochum, Universitätsstraße 150, NBCF 04 / 690, 44780, Bochum, Germany
| | - Martin Muhler
- Faculty of Chemistry and Biochemistry, Lab. of Industrial Chemistry, Ruhr-University Bochum, Universitätsstraße 150, NBCF 04 / 690, 44780, Bochum, Germany
| | - Malte Behrens
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Carl-Benz-Straße 199, 47057, Duisburg, Germany.,Institute of Inorganic Chemistry, Kiel University, Max-Eyth-Straße 2, 24118, Kiel, Germany
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24
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Najafishirtari S, Friedel Ortega K, Douthwaite M, Pattisson S, Hutchings GJ, Bondue CJ, Tschulik K, Waffel D, Peng B, Deitermann M, Busser GW, Muhler M, Behrens M. Frontispiece: A Perspective on Heterogeneous Catalysts for the Selective Oxidation of Alcohols. Chemistry 2021. [DOI: 10.1002/chem.202186861] [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: 11/11/2022]
Affiliation(s)
- Sharif Najafishirtari
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
| | - Klaus Friedel Ortega
- Institute of Inorganic Chemistry Kiel University Max-Eyth-Straße 2 24118 Kiel Germany
| | - Mark Douthwaite
- Cardiff Catalysis Institute Cardiff University CF10 3AT Cardiff United Kingdom
| | - Samuel Pattisson
- Cardiff Catalysis Institute Cardiff University CF10 3AT Cardiff United Kingdom
| | - Graham J. Hutchings
- Cardiff Catalysis Institute Cardiff University CF10 3AT Cardiff United Kingdom
| | - Christoph J. Bondue
- Faculty of Chemistry and Biochemistry Lab. of Electrochemistry & Nanoscale Materials Ruhr-University Bochum Universitätsstraße. 150, ZEMOS 1.41 44780 Bochum Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry Lab. of Electrochemistry & Nanoscale Materials Ruhr-University Bochum Universitätsstraße. 150, ZEMOS 1.41 44780 Bochum Germany
| | - Daniel Waffel
- Faculty of Chemistry and Biochemistry Lab. of Industrial Chemistry Ruhr-University Bochum Universitätsstraße 150, NBCF 04 / 690 44780 Bochum Germany
| | - Baoxiang Peng
- Faculty of Chemistry and Biochemistry Lab. of Industrial Chemistry Ruhr-University Bochum Universitätsstraße 150, NBCF 04 / 690 44780 Bochum Germany
| | - Michel Deitermann
- Faculty of Chemistry and Biochemistry Lab. of Industrial Chemistry Ruhr-University Bochum Universitätsstraße 150, NBCF 04 / 690 44780 Bochum Germany
| | - G. Wilma Busser
- Faculty of Chemistry and Biochemistry Lab. of Industrial Chemistry Ruhr-University Bochum Universitätsstraße 150, NBCF 04 / 690 44780 Bochum Germany
| | - Martin Muhler
- Faculty of Chemistry and Biochemistry Lab. of Industrial Chemistry Ruhr-University Bochum Universitätsstraße 150, NBCF 04 / 690 44780 Bochum Germany
| | - Malte Behrens
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Straße 199 47057 Duisburg Germany
- Institute of Inorganic Chemistry Kiel University Max-Eyth-Straße 2 24118 Kiel Germany
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25
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Azimzadeh Sani M, Pavlopoulos NG, Pezzotti S, Serva A, Cignoni P, Linnemann J, Salanne M, Gaigeot M, Tschulik K. Unexpectedly High Capacitance of the Metal Nanoparticle/Water Interface: Molecular-Level Insights into the Electrical Double Layer. Angew Chem Int Ed Engl 2021; 61:e202112679. [PMID: 34796598 PMCID: PMC9300121 DOI: 10.1002/anie.202112679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Indexed: 11/29/2022]
Abstract
The electrical double‐layer plays a key role in important interfacial electrochemical processes from catalysis to energy storage and corrosion. Therefore, understanding its structure is crucial for the progress of sustainable technologies. We extract new physico‐chemical information on the capacitance and structure of the electrical double‐layer of platinum and gold nanoparticles at the molecular level, employing single nanoparticle electrochemistry. The charge storage ability of the solid/liquid interface is larger by one order‐of‐magnitude than predicted by the traditional mean‐field models of the double‐layer such as the Gouy–Chapman–Stern model. Performing molecular dynamics simulations, we investigate the possible relationship between the measured high capacitance and adsorption strength of the water adlayer formed at the metal surface. These insights may launch the active tuning of solid–solvent and solvent–solvent interactions as an innovative design strategy to transform energy technologies towards superior performance and sustainability.
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Affiliation(s)
- Mahnaz Azimzadeh Sani
- Analytical Chemistry II Faculty of Chemistry and BiochemistryRuhr University Bochum44801BochumGermany
| | | | - Simone Pezzotti
- Physical Chemistry II Faculty of Chemistry and BiochemistryRuhr University Bochum44780BochumGermany
| | - Alessandra Serva
- Sorbonne UniversitéCNRSPhysico-chimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX75005ParisFrance
| | - Paolo Cignoni
- Analytical Chemistry II Faculty of Chemistry and BiochemistryRuhr University Bochum44801BochumGermany
| | - Julia Linnemann
- Analytical Chemistry II Faculty of Chemistry and BiochemistryRuhr University Bochum44801BochumGermany
| | - Mathieu Salanne
- Sorbonne UniversitéCNRSPhysico-chimie des Electrolytes et Nanosystèmes Interfaciaux, PHENIX75005ParisFrance
- Institut Universitaire de France (IUF)75231Paris Cedex 05France
| | | | - Kristina Tschulik
- Analytical Chemistry II Faculty of Chemistry and BiochemistryRuhr University Bochum44801BochumGermany
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van Spronsen MA, Zhao X, Jaugstetter M, Escudero C, Duchoň T, Hunt A, Waluyo I, Yang P, Tschulik K, Salmeron MB. Interface Sensitivity in Electron/Ion Yield X-ray Absorption Spectroscopy: The TiO 2-H 2O Interface. J Phys Chem Lett 2021; 12:10212-10217. [PMID: 34647748 DOI: 10.1021/acs.jpclett.1c02115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
To understand corrosion, energy storage, (electro)catalysis, etc., obtaining chemical information on the solid-liquid interface is crucial but remains extremely challenging. Here, X-ray absorption spectroscopy (XAS) is used to study the solid-liquid interface between TiO2 and H2O. A thin film (6.7 nm) of TiO2 is deposited on an X-ray-transparent SiNx window, acting as the working electrode in a three-electrode flow cell. The spectra are collected based on the electron emission resulting from the decay of the X-ray-induced core-hole-excited atoms, which we show is sensitive to the solid-liquid interface within a few nm. The drain currents measured at the working and counter electrodes are identical but of opposite sign. With this method, we found that the water layer next to anatase is spectroscopically similar to ice. This result highlights the potential of electron-yield XAS to obtain chemical and structural information with a high sensitivity for the species at the electrode-electrolyte interface.
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Affiliation(s)
- Matthijs A van Spronsen
- Diamond Light Source Ltd., Didcot OX11 0DE, U.K
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Xiao Zhao
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Material Science & Engineering, University of California, Berkeley, California 94720, United States
| | | | - Carlos Escudero
- ALBA Synchrotron Light Source, 08290 Cerdanyola del Vallès, Spain
| | - Tomáš Duchoň
- Peter Grünberg Institute PGI-6, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Adrian Hunt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Peidong Yang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Kristina Tschulik
- Department of Chemistry and Biochemistry, Ruhr-University-Bochum, 44780 Bochum, Germany
| | - Miquel B Salmeron
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Material Science & Engineering, University of California, Berkeley, California 94720, United States
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27
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BalaKrishnan A, Blanc N, Hagemann U, Gemagami P, Wonner K, Tschulik K, Li T. Direct Detection of Surface Species Formed on Iridium Electrocatalysts during the Oxygen Evolution Reaction. Angew Chem Int Ed Engl 2021; 60:21396-21403. [PMID: 34343398 PMCID: PMC8518547 DOI: 10.1002/anie.202106790] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/23/2021] [Indexed: 11/14/2022]
Abstract
The effect of surface orientations on the formation of iridium oxide species during the oxygen evolution reaction (OER) remains yet unknown. Herein, we use a needle-shaped iridium atom probe specimen as a nanosized working electrode to ascertain the role of the surface orientations in the formation of oxide species during OER. At the beginning of electrolysis, the top 2-3 nm of (024), (026), (113), and (115) planes are covered by IrO-OH, which activates all surfaces towards OER. A thick subsurface oxide layer consisting of sub-stoichiometric Ir-O species is formed on the open (024) planes as OER proceeds. Such metastable Ir-O species are thought to provide an additional contribution to the OER activity. Overall, this study sheds light on the importance of the morphological effects of iridium electrocatalysts for OER. It also provides an innovative approach that can directly reveal surface species on electrocatalysts at atomic scale.
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Affiliation(s)
- Arjun BalaKrishnan
- Institute for MaterialsRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Niclas Blanc
- Faculty of Chemistry and Biochemistry, Analytical Chemistry IIRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Ulrich Hagemann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN) and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenCarl-Benz-Strasse 19947057DuisburgGermany
| | - Parham Gemagami
- Institute for MaterialsRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Kevin Wonner
- Faculty of Chemistry and Biochemistry, Analytical Chemistry IIRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry IIRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Tong Li
- Institute for MaterialsRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
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28
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BalaKrishnan A, Blanc N, Hagemann U, Gemagami P, Wonner K, Tschulik K, Li T. Direct Detection of Surface Species Formed on Iridium Electrocatalysts during the Oxygen Evolution Reaction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106790] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Arjun BalaKrishnan
- Institute for Materials Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Niclas Blanc
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Ulrich Hagemann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN) and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Carl-Benz-Strasse 199 47057 Duisburg Germany
| | - Parham Gemagami
- Institute for Materials Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Kevin Wonner
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
| | - Tong Li
- Institute for Materials Ruhr-Universität Bochum Universitätsstrasse 150 44801 Bochum Germany
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29
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Affiliation(s)
- Julia Linnemann
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, Universitätsstr. 150, ZEMOS, 44801 Bochum, Germany
| | - Kannasoot Kanokkanchana
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, Universitätsstr. 150, ZEMOS, 44801 Bochum, Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II, Ruhr University Bochum, Universitätsstr. 150, ZEMOS, 44801 Bochum, Germany
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30
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Liu Z, Li S, Yang J, Tan X, Yu C, Zhao C, Han X, Huang H, Wan G, Liu Y, Tschulik K, Qiu J. Ultrafast Construction of Oxygen-Containing Scaffold over Graphite for Trapping Ni 2+ into Single Atom Catalysts. ACS Nano 2020; 14:11662-11669. [PMID: 32816450 DOI: 10.1021/acsnano.0c04210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ultrafast construction of oxygen-containing scaffold over graphite for trapping Ni2+ into single atom catalysts (SACs) was developed and presented by a one-step electrochemical activation technique. The present method for Ni SACs starts with graphite foil and is capable of achieving ultrafast preparation (1.5 min) and mass production. The defective oxygen featuring the strong electronegativity enables primarily attracting Ni2+ ions and stabilizing Ni atoms via Ni-O6 coordination instead of conventional metal-C or metal-N. In addition, the oxygen defects for trapping are tunable through altering the applied voltage or electrolyte, further altering the loading of Ni atoms, indicative of enhanced oxygen evolution activity. This simple and ultrafast electrochemical synthesis is promising for the mass and controllable production of oxygen-coordinated Ni SACs, which exhibit good performance for oxygen evolution reaction.
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Affiliation(s)
- Zhibin Liu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, 44780, Germany
| | - Shaofeng Li
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, California, 94025, United States
| | - Juan Yang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xinyi Tan
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Chang Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Changtai Zhao
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xiaotong Han
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Huawei Huang
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Gang Wan
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, California, 94025, United States
| | - Yijin Liu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, California, 94025, United States
| | - Kristina Tschulik
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, 44780, Germany
| | - Jieshan Qiu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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31
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Blanc N, Rurainsky C, Tschulik K. Implications of resistance and mass transport limitations on the common Tafel approach at composite catalyst thin-film electrodes. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114345] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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32
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Siegmund D, Blanc N, Smialkowski M, Tschulik K, Apfel U. Metal‐Rich Chalcogenides for Electrocatalytic Hydrogen Evolution: Activity of Electrodes and Bulk Materials. ChemElectroChem 2020. [DOI: 10.1002/celc.201902125] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Daniel Siegmund
- Fraunhofer UMSICHT Osterfelder Str. 3 46047 Oberhausen Germany
| | - Niclas Blanc
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry Ruhr University Bochum Universitätsstr. 150 44780 Bochum Germany
| | - Mathias Smialkowski
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry Ruhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Kristina Tschulik
- Analytical Chemistry II, Faculty of Chemistry and Biochemistry Ruhr University Bochum Universitätsstr. 150 44780 Bochum Germany
| | - Ulf‐Peter Apfel
- Fraunhofer UMSICHT Osterfelder Str. 3 46047 Oberhausen Germany
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry Ruhr University Bochum Universitätsstr. 150 44801 Bochum Germany
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33
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Wonner K, Rurainsky C, Tschulik K. Operando Studies of the Electrochemical Dissolution of Silver Nanoparticles in Nitrate Solutions Observed With Hyperspectral Dark-Field Microscopy. Front Chem 2020; 7:912. [PMID: 32010665 PMCID: PMC6978802 DOI: 10.3389/fchem.2019.00912] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 12/16/2019] [Indexed: 11/20/2022] Open
Abstract
Since nanoparticles are frequently used in commercial applications, there is a huge demand to obtain deeper insights into processes at the nanoscale. Especially, catalysis, chemical and electrochemical reaction dynamics are still poorly understood. Thus, simultaneous and coupled opto-and spectro-electrochemical dark-field microscopy is used to study in situ and operando the electrochemically driven dissolution mechanism of single silver nanoparticles in the presence of nitrate ions as non-complexing counter-ions, herein. Hyperspectral imaging is used to probe the intrinsic localized surface plasmon resonance of individual silver nanospheres before, during and after their electrochemical oxidation on a transparent indium tin oxide (ITO) electrode. Furthermore, optical video imaging was performed for additional information. Based on the complete loss of spectral information and intensity, a dissolution of the particles during the reaction was concluded. This way it is revealed that the dissolution of individual particles proceeds over several seconds, indicating a hindrance by the nitrate ions. Only electrochemical analysis does not provide this insight as the measured current does not allow distinguishing between successive fast dissolution of one particle after another or slow dissolution of several particles in a concerted manner. For comparison, experiments were performed in the presence of chloride ions. It was observed that the silver chloride formation is an instantaneous process. Thus, it is possible to study and define the reaction dynamics on the single nanoparticle level in various electrochemical systems and electrolyte solutions. Accordingly, operando opto- and spectro-electrochemical studies allow us to conclude, that the oxidation of silver to solvated silver cations is a kinetically slow process, while the oxidation to silver chloride is fast. We propose this approach as a new method to study electrocatalyst materials, their transformation and degradation under operando conditions.
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Affiliation(s)
- Kevin Wonner
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Christian Rurainsky
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
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34
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Breisch M, Loza K, Pappert K, Rostek A, Rurainsky C, Tschulik K, Heggen M, Epple M, Tiller JC, Schildhauer TA, Köller M, Sengstock C. Enhanced dissolution of silver nanoparticles in a physical mixture with platinum nanoparticles based on the sacrificial anode effect. Nanotechnology 2020; 31:055703. [PMID: 31618711 DOI: 10.1088/1361-6528/ab4e48] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A strategy to reduce implant-related infections is the inhibition of the initial bacterial implant colonization by biomaterials containing silver (Ag). The antimicrobial efficacy of such biomaterials can be increased by surface enhancement (nanosilver) or by creating a sacrificial anode system for Ag. Such a system will lead to an electrochemically driven enhanced Ag ion release due to the presence of a more noble metal. Here we combined the enlarged surface of nanoparticles (NP) with a possible sacrificial anode effect for Ag induced by the presence of the electrochemically more noble platinum (Pt) in physical mixtures of Ag NP and Pt NP dispersions. These Ag NP/Pt NP mixtures were compared to the same amounts of pure Ag NP in terms of cell biological responses, i.e. the antimicrobial activity against Staphylococcus aureus and Escherichia coli as well as the viability of human mesenchymal stem cells (hMSC). In addition, Ag NP was analyzed by ultraviolet-visible (UV-vis) spectroscopy, cyclic voltammetry, and atomic absorption spectroscopy. It was found that the dissolution rate of Ag NP was enhanced in the presence of Pt NP within the physical mixture compared to a dispersion of pure Ag NP. Dissolution experiments revealed a fourfold increased Ag ion release from physical mixtures due to enhanced electrochemical activity, which resulted in a significantly increased toxicity towards both bacteria and hMSC. Thus, our results provide evidence for an underlying sacrificial anode mechanism induced by the presence of Pt NP within physical mixtures with Ag NP. Such physical mixtures have a high potential for various applications, for example as antimicrobial implant coatings in the biomedicine or as bactericidal systems for water and surface purification in the technical area.
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Affiliation(s)
- Marina Breisch
- BG University Hospital Bergmannsheil Bochum/Surgical Research, Ruhr University Bochum, Buerkle-de-la-Camp-Platz 1, D-44789 Bochum, Germany
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35
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Abuayyash A, Ziegler N, Meyer H, Meischein M, Sengstock C, Moellenhoff J, Rurainsky C, Heggen M, Garzón-Manjón A, Scheu C, Tschulik K, Ludwig A, Köller M. Enhanced antibacterial performance of ultrathin silver/platinum nanopatches by a sacrificial anode mechanism. Nanomedicine 2019; 24:102126. [PMID: 31734515 DOI: 10.1016/j.nano.2019.102126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 11/15/2022]
Abstract
The development of antibacterial implant surfaces is a challenging task in biomaterial research. We fabricated a highly antibacterial bimetallic platinum (Pt)/silver(Ag) nanopatch surface by short time sputtering of Pt and Ag on titanium. The sputter process led to a patch-like distribution with crystalline areas in the nanometer-size range (1.3-3.9 nm thickness, 3-60 nm extension). Structural analyses of Pt/Ag samples showed Ag- and Pt-rich areas containing nanoparticle-like Pt deposits of 1-2 nm. The adhesion and proliferation properties of S. aureus on the nanopatch samples were analyzed. Consecutively sputtered Ag/Pt nanopatches (Pt followed by Ag) induced enhanced antimicrobial activity compared to co-sputtered Pt/Ag samples or pure Ag patches of similar Ag amounts. The underlying sacrificial anode mechanism was proved by linear sweep voltammetry. The advantages of this nanopatch coating are the enhanced antimicrobial activity despite a reduced total amount of Ag/Pt and a self-limited effect due the rapid Ag dissolution.
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Affiliation(s)
- Adham Abuayyash
- BG University Hospital Bergmannsheil, Surgical Research, Bochum, Germany
| | - Nadine Ziegler
- Ruhr University Bochum, Institute for Materials, Faculty of Mechanical Engineering, Bochum, Germany
| | - Hajo Meyer
- Ruhr University Bochum, Institute for Materials, Faculty of Mechanical Engineering, Bochum, Germany
| | - Michael Meischein
- Ruhr University Bochum, Institute for Materials, Faculty of Mechanical Engineering, Bochum, Germany
| | | | - Julian Moellenhoff
- BG University Hospital Bergmannsheil, Surgical Research, Bochum, Germany
| | - Christian Rurainsky
- Ruhr University Bochum, Faculty for Chemistry and Biochemistry, Analytical Chemistry II, Bochum, Germany
| | - Marc Heggen
- Forschungszentrum Jülich, Ernst Ruska-Center for Microscopy and Spectroscopy with Electrons, Jülich, Germany
| | | | - Christina Scheu
- Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany
| | - Kristina Tschulik
- Ruhr University Bochum, Faculty for Chemistry and Biochemistry, Analytical Chemistry II, Bochum, Germany
| | - Alfred Ludwig
- Ruhr University Bochum, Institute for Materials, Faculty of Mechanical Engineering, Bochum, Germany
| | - Manfred Köller
- BG University Hospital Bergmannsheil, Surgical Research, Bochum, Germany.
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36
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El Arrassi A, Liu Z, Evers MV, Blanc N, Bendt G, Saddeler S, Tetzlaff D, Pohl D, Damm C, Schulz S, Tschulik K. Correction to “Intrinsic Activity of Oxygen Evolution Catalysts Probed at Single CoFe 2O 4 Nanoparticles”. J Am Chem Soc 2019; 141:10565. [DOI: 10.1021/jacs.9b06330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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El Arrassi A, Liu Z, Evers MV, Blanc N, Bendt G, Saddeler S, Tetzlaff D, Pohl D, Damm C, Schulz S, Tschulik K. Intrinsic Activity of Oxygen Evolution Catalysts Probed at Single CoFe 2O 4 Nanoparticles. J Am Chem Soc 2019; 141:9197-9201. [PMID: 31145608 DOI: 10.1021/jacs.9b04516] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Identifying the intrinsic electrocatalytic activity of nanomaterials is challenging, as their characterization usually requires additives and binders whose contributions are difficult to dissect. Herein, we use nano impact electrochemistry as an additive-free method to overcome this problem. Due to the efficient mass transport at individual catalyst nanoparticles, high current densities can be realized. High-resolution bright-field transmission electron microscopy and selected area diffraction studies of the catalyst particles before and after the experiments provide valuable insights in the transformation of the nanomaterials during harsh oxygen evolution reaction (OER) conditions. We demonstrate this for 4 nm sized CoFe2O4 spinel nanoparticles. It is revealed that these particles retain their size and crystal structure even after OER at current densities as high as several kA·m-2. The steady-state current scales with the particle size distribution and is limited by the diffusion of produced oxygen away from the particle. This versatilely applicable method provides new insights into intrinsic nanocatalyst activities, which is key to the efficient development of improved and precious metal-free catalysts for renewable energy technologies.
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Affiliation(s)
- Abdelilah El Arrassi
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II , Ruhr University Bochum , 44801 Bochum , Germany
| | - Zhibin Liu
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II , Ruhr University Bochum , 44801 Bochum , Germany
| | - Mathies V Evers
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II , Ruhr University Bochum , 44801 Bochum , Germany
| | - Niclas Blanc
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II , Ruhr University Bochum , 44801 Bochum , Germany
| | - Georg Bendt
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 7 , 45141 Essen , Germany
| | - Sascha Saddeler
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 7 , 45141 Essen , Germany
| | - David Tetzlaff
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II , Ruhr University Bochum , 44801 Bochum , Germany
| | - Darius Pohl
- IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany.,Dresden Center for Nanoanalysis , TU Dresden , D-01062 Dresden , Germany
| | - Christine Damm
- IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany
| | - Stephan Schulz
- Faculty of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 7 , 45141 Essen , Germany
| | - Kristina Tschulik
- Faculty of Chemistry and Biochemistry, Analytical Chemistry II , Ruhr University Bochum , 44801 Bochum , Germany
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Evers MV, Bernal M, Roldan Cuenya B, Tschulik K. Piece by Piece—Electrochemical Synthesis of Individual Nanoparticles and their Performance in ORR Electrocatalysis. Angew Chem Int Ed Engl 2019; 58:8221-8225. [DOI: 10.1002/anie.201813993] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 04/10/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Mathies V. Evers
- Ruhr University Bochum Faculty of Chemistry and Biochemistry Chair of Analytical Chemistry II 44801 Bochum Germany
| | - Miguel Bernal
- Ruhr University Bochum Faculty of Chemistry and Biochemistry Chair of Analytical Chemistry II 44801 Bochum Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science Fritz Haber Institute of the Max Planck Society 14195 Berlin Germany
| | - Kristina Tschulik
- Ruhr University Bochum Faculty of Chemistry and Biochemistry Chair of Analytical Chemistry II 44801 Bochum Germany
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Evers MV, Bernal M, Roldan Cuenya B, Tschulik K. Partikel für Partikel – elektrochemische Einschlagsexperimente zur Synthese oberflächenimmobilisierter Goldnanopartikel für die Elektrokatalyse. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mathies V. Evers
- Ruhr-Universität Bochum Fakultät für Chemie und Biochemie Lehrstuhl für Analytische Chemie II 44801 Bochum Deutschland
| | - Miguel Bernal
- Ruhr-Universität Bochum Fakultät für Chemie und Biochemie Lehrstuhl für Analytische Chemie II 44801 Bochum Deutschland
| | - Beatriz Roldan Cuenya
- Abteilung für Grenzflächenwissenschaft Fritz-Haber-Institut der Max-Planck-Gesellschaft 14195 Berlin Deutschland
| | - Kristina Tschulik
- Ruhr-Universität Bochum Fakultät für Chemie und Biochemie Lehrstuhl für Analytische Chemie II 44801 Bochum Deutschland
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40
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Wonner K, Evers MV, Tschulik K. The electrochemical dissolution of single silver nanoparticles enlightened by hyperspectral dark-field microscopy. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.129] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Kanokkanchana K, Saw EN, Tschulik K. Front Cover: Nano Impact Electrochemistry: Effects of Electronic Filtering on Peak Height, Duration and Area (ChemElectroChem 20/2018). ChemElectroChem 2018. [DOI: 10.1002/celc.201801202] [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: 11/07/2022]
Affiliation(s)
- Kannasoot Kanokkanchana
- Chair of Analytical Chemistry IIDepartment of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
| | - En N. Saw
- Chair of Analytical Chemistry IIDepartment of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry IIDepartment of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
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42
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Affiliation(s)
- Kannasoot Kanokkanchana
- Chair of Analytical Chemistry IIFaculty of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
| | - En N. Saw
- Chair of Analytical Chemistry IIFaculty of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry IIFaculty of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
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43
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Affiliation(s)
- Kannasoot Kanokkanchana
- Chair of Analytical Chemistry IIDepartment of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
| | - En N. Saw
- Chair of Analytical Chemistry IIDepartment of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry IIDepartment of Chemistry and BiochemistryRuhr University Bochum Bochum Germany
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44
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Brasiliense V, Noël J, Wonner K, Tschulik K, Combellas C, Kanoufi F. Single Nanoparticle Growth from Nanoparticle Tracking Analysis: From Monte Carlo Simulations to Nanoparticle Electrogeneration. ChemElectroChem 2018. [DOI: 10.1002/celc.201800742] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Vitor Brasiliense
- Université Sorbonne Paris Cité, Université Paris DiderotITODYS, CNRS UMR 7086 15 rue Jean-Antoine de Baïf F-75013 Paris France
- Northwestern University Department of Chemistry 2145 Sheridan Rd. 60208 Evanston IL USA
| | - Jean‐Marc Noël
- Université Sorbonne Paris Cité, Université Paris DiderotITODYS, CNRS UMR 7086 15 rue Jean-Antoine de Baïf F-75013 Paris France
| | - Kevin Wonner
- Ruhr-University BochumChair of Analytical Chemistry II and Centre for Electrochemical Sciences (CES), ZEMOS Bochum 44801 Germany
| | - Kristina Tschulik
- Ruhr-University BochumChair of Analytical Chemistry II and Centre for Electrochemical Sciences (CES), ZEMOS Bochum 44801 Germany
| | - Catherine Combellas
- Université Sorbonne Paris Cité, Université Paris DiderotITODYS, CNRS UMR 7086 15 rue Jean-Antoine de Baïf F-75013 Paris France
| | - Frédéric Kanoufi
- Université Sorbonne Paris Cité, Université Paris DiderotITODYS, CNRS UMR 7086 15 rue Jean-Antoine de Baïf F-75013 Paris France
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45
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Saw EN, Blanc N, Kanokkanchana K, Tschulik K. Time-resolved impact electrochemistry - A new method to determine diffusion coefficients of ions in solution. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Albrecht T, MacPherson J, Magnussen O, Fermin D, Crooks R, Gooding J, Hersbach T, Kanoufi F, Schuhmann W, Bentley C, Tao N, Mitra S, Krischer K, Tschulik K, Faez S, Nogala W, Unwin P, Long Y, Koper M, Tian Z, Alpuche-Aviles MA, White H, Brasiliense V, Kranz C, Schmickler W, Stevenson K, Jing C, Edwards M. Electrochemistry of single nanoparticles: general discussion. Faraday Discuss 2018; 193:387-413. [PMID: 27892971 DOI: 10.1039/c6fd90068b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Wonner K, Evers MV, Tschulik K. Simultaneous Opto- and Spectro-Electrochemistry: Reactions of Individual Nanoparticles Uncovered by Dark-Field Microscopy. J Am Chem Soc 2018; 140:12658-12661. [DOI: 10.1021/jacs.8b02367] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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)
- Kevin Wonner
- Chair of Analytical Chemistry II and Center for Electrochemical Sciences (CES), ZEMOS 1.45, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
| | - Mathies V. Evers
- Chair of Analytical Chemistry II and Center for Electrochemical Sciences (CES), ZEMOS 1.45, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
| | - Kristina Tschulik
- Chair of Analytical Chemistry II and Center for Electrochemical Sciences (CES), ZEMOS 1.45, Ruhr-University Bochum, Universitätsstraße 150, D-44801 Bochum, Germany
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48
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Hayrapetyan D, Rit RK, Kratz M, Tschulik K, Gooßen LJ. Electrochemical C−H Cyanation of Electron-Rich (Hetero)Arenes. Chemistry 2018; 24:11288-11291. [DOI: 10.1002/chem.201802247] [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] [Received: 05/04/2018] [Revised: 05/30/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Davit Hayrapetyan
- Evonik Chair of Organic Chemistry; Ruhr-Universität Bochum; Universitätsstrasse 150, ZEMOS 44801 Bochum Germany
| | - Raja K. Rit
- Evonik Chair of Organic Chemistry; Ruhr-Universität Bochum; Universitätsstrasse 150, ZEMOS 44801 Bochum Germany
| | - Markus Kratz
- Micro- & Nano-Electrochemistry, Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150, ZEMOS 44801 Bochum Germany
| | - Kristina Tschulik
- Micro- & Nano-Electrochemistry, Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150, ZEMOS 44801 Bochum Germany
| | - Lukas J. Gooßen
- Evonik Chair of Organic Chemistry; Ruhr-Universität Bochum; Universitätsstrasse 150, ZEMOS 44801 Bochum Germany
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Grasmik V, Rurainsky C, Loza K, Evers MV, Prymak O, Heggen M, Tschulik K, Epple M. Cover Feature: Deciphering the Surface Composition and the Internal Structure of Alloyed Silver-Gold Nanoparticles (Chem. Eur. J. 36/2018). Chemistry 2018. [DOI: 10.1002/chem.201801307] [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: 11/06/2022]
Affiliation(s)
- Viktoria Grasmik
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
| | - Christian Rurainsky
- Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), ZEMOS 1.45; Ruhr-University Bochum; 44801 Bochum Germany
| | - Kateryna Loza
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
| | - Mathies V. Evers
- Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), ZEMOS 1.45; Ruhr-University Bochum; 44801 Bochum Germany
| | - Oleg Prymak
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
| | - Marc Heggen
- Ernst Ruska-Centre and Peter Grünberg Institute; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
| | - Kristina Tschulik
- Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), ZEMOS 1.45; Ruhr-University Bochum; 44801 Bochum Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
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50
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Grasmik V, Rurainsky C, Loza K, Evers MV, Prymak O, Heggen M, Tschulik K, Epple M. Deciphering the Surface Composition and the Internal Structure of Alloyed Silver-Gold Nanoparticles. Chemistry 2018. [DOI: 10.1002/chem.201800579] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Viktoria Grasmik
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
| | - Christian Rurainsky
- Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), ZEMOS 1.45; Ruhr-University Bochum; 44801 Bochum Germany
| | - Kateryna Loza
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
| | - Mathies V. Evers
- Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), ZEMOS 1.45; Ruhr-University Bochum; 44801 Bochum Germany
| | - Oleg Prymak
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
| | - Marc Heggen
- Ernst Ruska-Centre and Peter Grünberg Institute; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
| | - Kristina Tschulik
- Micro- & Nano-Electrochemistry and Center for Electrochemical Sciences (CES), ZEMOS 1.45; Ruhr-University Bochum; 44801 Bochum Germany
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE); University of Duisburg-Essen; Universitätsstr. 5-7 45117 Essen Germany
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