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1
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da Silva KN, Sitta E. Oscillatory dynamics during the methanol electrooxidation reaction on Pt(111). Phys Chem Chem Phys 2021; 23:22263-22272. [PMID: 34644370 DOI: 10.1039/d1cp02490f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite several papers describing the oscillatory methanol electrooxidation reaction (OMOR) catalyzed by polycrystalline Pt, these dynamic instabilities are less explored on single crystalline surfaces. Herein, we observed and mapped for the first time the OMOR on Pt(111) in non-adsorbing anion solutions as well as in the presence of small amounts of sulfate anions. Period 1 oscillations with oscillation frequencies from 1.2 to 2.0 Hz were observed for methanol concentrations higher than 1.0 M, with no evolution to more complex patterns. These oscillations occur in the potential range in which PtOH is partially covering the surface without irreversible oxidation processes. Small changes in both the mean potential (Em) and the poisoning rate along the time-series were observed, the so-called drift, and were explained in terms of the accumulation of intermediates at the interface. The presence of sulfate strongly inhibits the OMOR, and the results are discussed in terms of sulfate adlayer formation on {111} domains.
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Affiliation(s)
- Kaline Nascimento da Silva
- Chemistry Department, Federal University of Sao Carlos, Rod. Washington Luis, km 235, Sao Carlos, 13565-905, Brazil.
| | - Elton Sitta
- Chemistry Department, Federal University of Sao Carlos, Rod. Washington Luis, km 235, Sao Carlos, 13565-905, Brazil. .,Center for Innovation on New Energies, Campinas, 13083-841, Brazil
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2
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Yang Y, Xiong Y, Zeng R, Lu X, Krumov M, Huang X, Xu W, Wang H, DiSalvo FJ, Brock JD, Muller DA, Abruña HD. Operando Methods in Electrocatalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04789] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yao Yang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Yin Xiong
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Rui Zeng
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Xinyao Lu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Mihail Krumov
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Xin Huang
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, United States
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - Weixuan Xu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Hongsen Wang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Francis J. DiSalvo
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Joel. D. Brock
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, United States
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - David A. Muller
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, United States
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, United States
| | - Héctor D. Abruña
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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3
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Lozeman JJA, Führer P, Olthuis W, Odijk M. Spectroelectrochemistry, the future of visualizing electrode processes by hyphenating electrochemistry with spectroscopic techniques. Analyst 2020; 145:2482-2509. [DOI: 10.1039/c9an02105a] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reviewing the future of electrochemistry combined with infrared, Raman, and nuclear magnetic resonance spectroscopy as well as mass spectrometry.
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Affiliation(s)
- Jasper J. A. Lozeman
- BIOS Lab-on-a-Chip Group
- MESA+ Institute
- University of Twente
- 7522 NB Enschede
- The Netherlands
| | - Pascal Führer
- BIOS Lab-on-a-Chip Group
- MESA+ Institute
- University of Twente
- 7522 NB Enschede
- The Netherlands
| | - Wouter Olthuis
- BIOS Lab-on-a-Chip Group
- MESA+ Institute
- University of Twente
- 7522 NB Enschede
- The Netherlands
| | - Mathieu Odijk
- BIOS Lab-on-a-Chip Group
- MESA+ Institute
- University of Twente
- 7522 NB Enschede
- The Netherlands
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Petrii OA. The Progress in Understanding the Mechanisms of Methanol and Formic Acid Electrooxidation on Platinum Group Metals (a Review). RUSS J ELECTROCHEM+ 2019. [DOI: 10.1134/s1023193519010129] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Methanol Oxidation on Pt(111) from First-Principles in Heterogeneous and Electrocatalysis. Electrocatalysis (N Y) 2017. [DOI: 10.1007/s12678-017-0370-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Sakong S, Groß A. The Importance of the Electrochemical Environment in the Electro-Oxidation of Methanol on Pt(111). ACS Catal 2016. [DOI: 10.1021/acscatal.6b00931] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sung Sakong
- Institute
of Theoretical Chemistry, Ulm University, 89069 Ulm, Germany
| | - Axel Groß
- Institute
of Theoretical Chemistry, Ulm University, 89069 Ulm, Germany
- Electrochemical
Energy Storage, Helmholtz Institute Ulm (HIU), 89069 Ulm, Germany
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7
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Nagao R, Freitas RG, Silva CD, Varela H, Pereira EC. Oscillatory Electro-oxidation of Methanol on Nanoarchitectured Ptpc/Rh/Pt Metallic Multilayer. ACS Catal 2015. [DOI: 10.1021/cs501652u] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Raphael Nagao
- Department
of Chemistry, Federal University of São Carlos, P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
- Institute
of Chemistry of São Carlos, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, São Paulo, Brazil
| | - Renato G. Freitas
- Department
of Chemistry, Federal University of São Carlos, P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
- Department
of Chemistry, Federal University of Mato Grosso, 78060-900 Cuiaba, Mato Grosso, Brazil
| | - Camila D. Silva
- Department
of Chemistry, Federal University of São Carlos, P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Hamilton Varela
- Institute
of Chemistry of São Carlos, University of São Paulo, P.O. Box 780, 13560-970 São Carlos, São Paulo, Brazil
- Ertl
Center for Electrochemistry and Catalysis, GIST, Cheomdan-gwagiro
261, Buk-gu, Gwangju 500-712, South Korea
| | - Ernesto C. Pereira
- Department
of Chemistry, Federal University of São Carlos, P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
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Jusys Z, Behm RJ. Adsorption and oxidation of formaldehyde on a polycrystalline Pt film electrode: An in situ IR spectroscopy search for adsorbed reaction intermediates. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:747-59. [PMID: 24991512 PMCID: PMC4077456 DOI: 10.3762/bjnano.5.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 04/30/2014] [Indexed: 05/07/2023]
Abstract
As part of a mechanistic study of the electrooxidation of C1 molecules we have systematically investigated the dissociative adsorption/oxidation of formaldehyde on a polycrystalline Pt film electrode under experimental conditions optimizing the chance for detecting weakly adsorbed reaction intermediates. Employing in situ IR spectroscopy in an attenuated total reflection configuration (ATR-FTIRS) with p-polarized IR radiation to further improve the signal-to-noise ratio, and using low reaction temperatures (3 °C) and deuterium substitution to slow down the reaction kinetics and to stabilize weakly adsorbed reaction intermediates, we could detect an IR absorption band at 1660 cm(-1) characteristic for adsorbed formyl intermediates. This assignment is supported by an isotope shift in wave number. Effects of temperature, potential and deuterium substitution on the formation and disappearance of different adsorbed species (COad, adsorbed formate, adsorbed formyl), are monitored and quantified. Consequences on the mechanism for dissociative adsorption and oxidation of formaldehyde are discussed.
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Affiliation(s)
- Zenonas Jusys
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - R Jürgen Behm
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
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Reichert R, Schnaidt J, Jusys Z, Behm RJ. The influence of reactive side products on the electrooxidation of methanol – a combined in situ infrared spectroscopy and online mass spectrometry study. Phys Chem Chem Phys 2014; 16:13780-99. [DOI: 10.1039/c4cp01229a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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