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Mohandas N, Bawari S, Shibuya JJT, Ghosh S, Mondal J, Narayanan TN, Cuesta A. Understanding electrochemical interfaces through comparing experimental and computational charge density-potential curves. Chem Sci 2024; 15:6643-6660. [PMID: 38725490 PMCID: PMC11077530 DOI: 10.1039/d4sc00746h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/21/2024] [Indexed: 05/12/2024] Open
Abstract
Electrode-electrolyte interfaces play a decisive role in electrochemical charge accumulation and transfer processes. Theoretical modelling of these interfaces is critical to decipher the microscopic details of such phenomena. Different force field-based molecular dynamics protocols are compared here in a view to connect calculated and experimental charge density-potential relationships. Platinum-aqueous electrolyte interfaces are taken as a model. The potential of using experimental charge density-potential curves to transform cell voltage into electrode potential in force-field molecular dynamics simulations, and the need for that purpose of developing simulation protocols that can accurately calculate the double-layer capacitance, are discussed.
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Affiliation(s)
- Nandita Mohandas
- Tata Institute of Fundamental Research-Hyderabad Hyderabad 500046 India
- Advanced Centre for Energy and Sustainability (ACES), School of Natural and Computing Sciences, University of Aberdeen AB24 3UE Aberdeen Scotland UK
| | - Sumit Bawari
- Tata Institute of Fundamental Research-Hyderabad Hyderabad 500046 India
| | - Jani J T Shibuya
- Advanced Centre for Energy and Sustainability (ACES), School of Natural and Computing Sciences, University of Aberdeen AB24 3UE Aberdeen Scotland UK
| | - Soumya Ghosh
- Tata Institute of Fundamental Research-Hyderabad Hyderabad 500046 India
| | - Jagannath Mondal
- Tata Institute of Fundamental Research-Hyderabad Hyderabad 500046 India
| | | | - Angel Cuesta
- Advanced Centre for Energy and Sustainability (ACES), School of Natural and Computing Sciences, University of Aberdeen AB24 3UE Aberdeen Scotland UK
- Centre for Energy Transition, University of Aberdeen AB24 3FX Aberdeen Scotland UK
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2
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Gaudin LF, Kang M, Bentley CL. Facet-Dependent Electrocatalysis and Surface Electrochemical Processes on Polycrystalline Platinum. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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3
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Hu J, Wang P, Chen C. The Electrochemical Oxidation and Mass Transfer Mechanism of Formic Acid on the Catalyst Electrode Surface. Front Chem 2022; 10:914699. [PMID: 35769441 PMCID: PMC9234143 DOI: 10.3389/fchem.2022.914699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/02/2022] [Indexed: 12/02/2022] Open
Abstract
The organic small molecule fuel battery has attracted wild attention in recent years. Unfortunately, the inherent catalyst poisoning phenomenon hinders its commercialization. Exploring the anodic catalytic reaction mechanism is urgent. This article investigates the nucleation mechanism of HCOOH on the catalyst electrode surface. The electrochemical results indicate that the HCOOH oxidation conforms to the two-dimensional instantaneous nucleation process. The corresponding adsorption model of CO on the catalyst surface was finally established.
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Affiliation(s)
- Jie Hu
- Department of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing, China
- *Correspondence: Jie Hu, ; Changguo Chen,
| | - Panpan Wang
- China Merchants Testing Vehicle Technology Research Institute Co., Ltd., Chongqing, China
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Changguo Chen
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
- *Correspondence: Jie Hu, ; Changguo Chen,
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4
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Marcandalli G, Monteiro MCO, Koper MTM. Electrolyte buffering species as oxygen donor shuttles in CO electrooxidation. Phys Chem Chem Phys 2021; 24:2022-2031. [PMID: 34909813 DOI: 10.1039/d1cp05030c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrolyte buffering species have been shown to act as proton donors in the hydrogen evolution reaction (HER). Analogously, we study here whether these electrolyte species may participate in other reactions by investigating CO electrooxidation (COOR) on a gold rotating disk electrode. This model system, characterized by fast kinetics, exhibits a diffusion-limited regime, which helps in the identification of the species dictating the diffusion-limited current. Through a systematic concentration dependence study in a variety of buffers, we show that electrolyte buffering species act as oxygen donor shuttles in COOR, lowering the reaction overpotential. A similar correlation between electrolyte and electrocatalytic activity was observed for COOR on a different electrode material (Pt). Probing the electrode-electrolyte interface by attenuated total reflection infrared spectroscopy (ATR-FTIR) and modelling the surface speciation to include the effect of the solution reactions, we propose that the buffer conjugated base generates the oxygen donor (i.e. OH-) through its acid-base reaction with water.
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Affiliation(s)
- Giulia Marcandalli
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands.
| | - Mariana C O Monteiro
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands.
| | - Marc T M Koper
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands.
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5
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Boronat-González A, Herrero E, Feliu JM. Determination of the potential of zero charge of Pt/CO electrodes using an impinging jet system. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04654-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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Climent V, Feliu J. Single Crystal Electrochemistry as an In Situ Analytical Characterization Tool. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2020; 13:201-222. [PMID: 32243760 DOI: 10.1146/annurev-anchem-061318-115541] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The electrochemical behavior of platinum single crystal surfaces can be taken as a model response for the interpretation of the activity of heterogeneous electrodes. The cyclic voltammogram of a given platinum electrode can be considered a fingerprint characteristic of the distribution of sites on its surface. We start this review by providing some simple mathematical descriptions of the voltammetric response in the presence of adsorption processes. We then describe the voltammogram of platinum basal planes, followed by the response of stepped surfaces. The voltammogram of polycrystalline materials can be understood as a composition of the response of the different basal contributions. Further resolution in the discrimination of different surface sites can be achieved with the aid of surface modification using adatoms such as bismuth or germanium. The application of these ideas is exemplified with the consideration of real catalysts composed of platinum nanoparticles with preferential shapes.
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Affiliation(s)
- Víctor Climent
- Instituto Universitario de Electroquímica, Universidad de Alicante, E-03690, San Vicente del Raspeig, Alicante, Spain;
| | - Juan Feliu
- Instituto Universitario de Electroquímica, Universidad de Alicante, E-03690, San Vicente del Raspeig, Alicante, Spain;
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7
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Klein J, Chesnyak V, Löw M, Schilling M, Engstfeld AK, Behm RJ. Selective Modification and Probing of the Electrocatalytic Activity of Step Sites. J Am Chem Soc 2019; 142:1278-1286. [PMID: 31875391 DOI: 10.1021/jacs.9b10201] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jens Klein
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - Valeria Chesnyak
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - Mario Löw
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - Martin Schilling
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - Albert K. Engstfeld
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
| | - R. Jürgen Behm
- Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm, Germany
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8
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Electrode stimulation: Redox reactions induced by modulating the electrostatic potential in solution. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Zinola CF. Carbon monoxide oxidation assisted by interfacial oxygen-water layers. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-018-04190-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Martínez-Hincapié R, Climent V, Feliu JM. Peroxodisulfate reduction as a probe to interfacial charge. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.01.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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11
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Attard GA, Hunter K, Wright E, Sharman J, Martínez-Hincapié R, Feliu JM. The voltammetry of surfaces vicinal to Pt{110}: Structural complexity simplified by CO cooling. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.10.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Lee MJ, Kang JS, Kang YS, Chung DY, Shin H, Ahn CY, Park S, Kim MJ, Kim S, Lee KS, Sung YE. Understanding the Bifunctional Effect for Removal of CO Poisoning: Blend of a Platinum Nanocatalyst and Hydrous Ruthenium Oxide as a Model System. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02580] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Myeong Jae Lee
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jin Soo Kang
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Yun Sik Kang
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Dong Young Chung
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Heejong Shin
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Chi-Yeong Ahn
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Subin Park
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Mi-Ju Kim
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Sungjun Kim
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
| | - Kug-Seung Lee
- Beamline
Research Division, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Yung-Eun Sung
- Center
for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- School
of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea
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13
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ITAYA K. Recent Progresses of Electrochemical Surface Science ∼Importance of Surface Imaging with Atomic Scale∼. ELECTROCHEMISTRY 2015. [DOI: 10.5796/electrochemistry.83.670] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Kingo ITAYA
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University
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14
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Li JF, Rudnev A, Fu Y, Bodappa N, Wandlowski T. In situ SHINERS at electrochemical single-crystal electrode/electrolyte interfaces: tuning preparation strategies and selected applications. ACS NANO 2013; 7:8940-52. [PMID: 24007327 DOI: 10.1021/nn403444j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We have studied Au(55 nm)@SiO2 nanoparticles (NPs) on two low-index phases of gold and platinum single crystal electrodes in ClO4(-) and SO4(2-) ion-containing electrolytes by both electrochemical methods and in-situ shell-isolated nanoparticle enhanced Raman spectroscopy (SHINERS). We showed the blocking of the electrode with surfactants originating from the synthesis of as-prepared SHINERS NPs. We introduce an efficient procedure to overcome this problem, which provides a fundamental platform for the application of SHINERS in surface electrochemistry and beyond. Our method is based on a hydrogen evolution treatment of the SHINERS-NP-modified single-crystal surfaces. The reliability of our preparation strategy is demonstrated in electrochemical SHINERS experiments on the potential-controlled adsorption and phase formation of pyridine on Au(hkl) and Pt(hkl). We obtained high-quality Raman spectra on these well-defined and structurally carefully characterized single-crystal surfaces. The analysis of the characteristic A1 vibrational modes revealed perfect agreement with the interpretation of single-crystal voltammetric and chronoamperometric experiments. Our study demonstrates that the SHINERS protocol developed in this work qualifies this Raman method as a pioneering approach with unique opportunities for in situ structure and reactivity studies at well-defined electrochemical solid/liquid interfaces.
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Affiliation(s)
- Jian-Feng Li
- Department of Chemistry and Biochemistry, University of Bern , Freiestrasse 3, Bern, Bern CH-3012, Switzerland
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15
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Petrii OA. Zero charge potentials of platinum metals and electron work functions (Review). RUSS J ELECTROCHEM+ 2013. [DOI: 10.1134/s1023193513050145] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Yeh KY, Restaino NA, Esopi MR, Maranas JK, Janik MJ. The adsorption of bisulfate and sulfate anions over a Pt(111) electrode: A first principle study of adsorption configurations, vibrational frequencies and linear sweep voltammogram simulations. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.03.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Yoshimoto S, Itaya K. Adsorption and assembly of ions and organic molecules at electrochemical interfaces: nanoscale aspects. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2013; 6:213-235. [PMID: 23772658 DOI: 10.1146/annurev-anchem-062012-092559] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We describe the history of electrochemical scanning tunneling microscopy (STM) and advances made in this field during the past 20 years. In situ STM allows one to monitor various electrode processes, such as the underpotential deposition of copper and silver ions; the specific adsorption of iodine and sulfate/bisulfate ions; electrochemical dissolution processes of silicon and gold single-crystal surfaces in electrolyte solutions; and the molecular assembly of metalloporphyrins, metallophthalocyanines, and fullerenes, at atomic and/or molecular resolution. Furthermore, a laser confocal microscope, combined with a differential interference contrast microscope, enables investigation of the dynamics of electrochemical processes at atomic resolution.
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Affiliation(s)
- Soichiro Yoshimoto
- Priority Organization for Innovation and Excellence, Kumamoto University, Kumamoto 860-8555, Japan
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18
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19
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Bromberg L, Fayette M, Martens B, Luo ZP, Wang Y, Xu D, Zhang J, Fang J, Dimitrov N. Catalytic Performance Comparison of Shape-Dependent Nanocrystals and Oriented Ultrathin Films of Pt4Cu Alloy in the Formic Acid Oxidation Process. Electrocatalysis (N Y) 2012. [DOI: 10.1007/s12678-012-0109-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Korzeniewski C, Climent V, Feliu J. Electrochemistry at Platinum Single Crystal Electrodes. ELECTROANALYTICAL CHEMISTRY: A SERIES OF ADVANCES 2011. [DOI: 10.1201/b11480-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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García G, Koper MTM. Carbon Monoxide Oxidation on Pt Single Crystal Electrodes: Understanding the Catalysis for Low Temperature Fuel Cells. Chemphyschem 2011; 12:2064-72. [DOI: 10.1002/cphc.201100247] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Indexed: 11/10/2022]
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22
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Chen D, Tao Q, Liao LW, Liu SX, Chen YX, Ye S. Determining the Active Surface Area for Various Platinum Electrodes. Electrocatalysis (N Y) 2011. [DOI: 10.1007/s12678-011-0054-1] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Fayette M, Liu Y, Bertrand D, Nutariya J, Vasiljevic N, Dimitrov N. From Au to Pt via surface limited redox replacement of Pb UPD in one-cell configuration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5650-8. [PMID: 21476555 DOI: 10.1021/la200348s] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
This work is aimed at developing a protocol based on surface limited redox replacement (SLRR) of underpotentially deposited (UPD) Pb layers for the growth of epitaxial and continuous Pt thin films on polycrystalline and single crystalline Au surfaces. Different from previously reported papers using SLRR in multiple immersion or flow cell setups, this work explores the one-cell configuration setup as an alternative to improve the efficiency and quality of the growth. Open circuit chronopotentiometry and quartz-crystal microbalance experiments demonstrate steady displacement kinetics and a yield that is higher than the stoichiometric Pt(II)-Pb exchange ratio (1:1). This high yield is attributed to oxidative adsorption of OH(ad) taking place on Pt along with the displacement process. Also, ex situ scanning tunneling microscopy surface characterization reveals after the first replacement event the formation of a dense Pt cluster network that homogenously covers the Au surface. The Pt films grow homogenously with no significant changes in the cluster distribution and surface roughness observed up to 10 successive replacement events. X-ray diffraction analysis shows distinct (111) crystallographic orientation of thicker Pt films deposited on (111) textured Au thin films. Coarse energy dispersive spectroscopy measurements and finer X-ray photoelectron spectroscopy suggest at least 4 atom % Pb incorporating into the Pt layer compared to 13 atom % alloyed Cu when the growth is carried out by SLRR of Cu UPD.
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Affiliation(s)
- M Fayette
- Department of Chemistry, SUNY at Binghamton, Binghamton, New York 13902, United States
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25
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Kim J, Kim S, Rhee CK. Preoxidation of CO on Os-modified Pt(111): a comparison with Ru-modified Pt(111). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:2044-2051. [PMID: 21244079 DOI: 10.1021/la103256k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The variation in CO adsorption structures during the preoxidation of CO on Os-modified Pt(111) (Pt(111)/Os) was investigated using cyclic voltammetry and electrochemical scanning tunneling microscopy. The spontaneous deposition of Os on Pt(111) resulted in randomly scattered islands with a coverage range of 0.13-0.54. During preoxidation on Pt(111)/Os, a phase transition from (2 × 2)-α to (√19 × √19) via the transient structures of (2 × 2)-β and (1 × 1) took place as on unmodified Pt(111). As the amount of Os increased, however, the transient structures of (2 × 2)-β and (1 × 1) appeared at lower potentials with higher populations. When the population of the transient structures was greater than 50%, an oxidative CO stripping process took place to the structure of (√19 × √19), completing the preoxidation. These observations strongly support the idea that the presence of Os increases the mobility of adsorbed CO by electronic modification of the Pt(111) surface (electronic effect). In addition, the results obtained with Pt(111)/Os were compared with those of Pt(111)/Ru.
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Affiliation(s)
- Jandee Kim
- Department of Chemistry, Chungnam National University, Dajeon 305-764, South Korea
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26
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2 Surface Thermodynamics of Metal/Solution Interface: the Untapped Resources. MODERN ASPECTS OF ELECTROCHEMISTRY 2011. [DOI: 10.1007/978-1-4419-5580-7_2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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27
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Su Z, Climent V, Leitch J, Zamlynny V, Feliu JM, Lipkowski J. Quantitative SNIFTIRS studies of (bi)sulfate adsorption at the Pt(111) electrode surface. Phys Chem Chem Phys 2010; 12:15231-9. [PMID: 21046024 DOI: 10.1039/c0cp00860e] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Subtractively normalized interfacial Fourier transform infrared reflection spectroscopy (SNIFTIRS) was applied to study (bi)sulfate adsorption on a Pt(111) surface in solutions of variable pH while maintaining a constant total bisulfate/sulfate ((bi)sulfate) concentration without the addition of an inert supporting electrolyte. The spectra were recorded for both the p- and s-polarizations of the IR radiation in order to differentiate between the IR bands of the (bi)sulfate species adsorbed on the electrode surface from those species located in the thin layer of electrolyte. The spectra recorded with p-polarized light consist of the IR bands from both the species adsorbed at the electrode surface and those present in the thin layer of electrolyte between the electrode surface and ZnSe window whereas the s-polarized spectra contain only the IR bands from the species located in the thin layer of electrolyte. A new procedure was developed to calculate the angle of incidence and thickness of the electrolyte between the Pt(111) electrode surface and the ZnSe IR transparent window. By combining these values with the knowledge of the optical constants for Pt, H(2)O and ZnSe, the mean square electric field strength (MSEFS) at the Pt(111) electrode surface and for thin layer of solution were accurately calculated. The spectra recorded using s-polarization were multiplied by the ratio of the average MSEFS for p- and s-polarizations and subtracted from the spectra recorded using p-polarization in order to remove the IR bands that arise from the species present within the thin layer cavity. In this manner, the resulting IR spectra contain only the IR bands for the anions adsorbed on the Pt(111) electrode surface. The spectra of adsorbed anions show little change with respect to the pH ranging from 1 to 5.6. This behavior indicates that the same species is predominantly adsorbed on the metal surface for this broad range of pH values and the results suggest that sulfate is the most likely candidate for this adsorbate.
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Affiliation(s)
- Zhangfei Su
- Department of Chemistry, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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28
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Chen QS, Solla-Gullón J, Sun SG, Feliu JM. The potential of zero total charge of Pt nanoparticles and polycrystalline electrodes with different surface structure: The role of anion adsorption in fundamental electrocatalysis. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.03.050] [Citation(s) in RCA: 156] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Garcia-Araez N, Climent V, Rodriguez P, Feliu JM. Elucidation of the chemical nature of adsorbed species for Pt(111) in H2SO4 solutions by thermodynamic analysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:12408-12417. [PMID: 20524623 DOI: 10.1021/la101112b] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The nature of the adsorbed species for Pt(111) in sulfuric acid solutions has been elucidated by a careful thermodynamic analysis of the effect of pH on charge density data. This analysis takes advantage of the fact that, for solutions of constant total sulfate + bisulfate concentration, an increase of pH would increase the sulfate concentration, at the expense of decreasing the bisulfate concentration. As a result, sulfate adsorption would be shifted toward lower potentials, while bisulfate adsorption would follow the opposite trend. In the present work, coulostatic data for Pt(111) in (0.2 - x) M Me(2)SO(4) + x M H(2)SO(4) (Me: Li, Na; x: 10(-4) - 0.2) and (0.1 - x) M KClO(4) + x M HClO(4) + 10(-3) M K(2)SO(4) (x: 10(-4) - 0.1) solutions are carefully analyzed. It is concluded that sulfate rather than bisulfate adsorption takes place at potentials higher than the potential of zero charge. This result agrees with the fact that similar FTIRRAS bands for adsorbed sulfate species are observed for pH 0.8-3.5 in (0.2 - x) M K(2)SO(4) + x M H(2)SO(4) solutions.
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Affiliation(s)
- Nuria Garcia-Araez
- FOM Institute for Atomic and Molecular Physics (AMOLF), Postbus 41883, 1009 DB Amsterdam, The Netherlands.
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Garcia-Araez N, Climent V, Rodriguez P, Feliu JM. Thermodynamic evidence for K+–SO42− ion pair formation on Pt(111). New insight into cation specific adsorption. Phys Chem Chem Phys 2010; 12:12146-52. [DOI: 10.1039/c0cp00247j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Santana JA, Cabrera CR, Ishikawa Y. A density-functional theory study of electrochemical adsorption of sulfuric acid anions on Pt(111). Phys Chem Chem Phys 2010; 12:9526-34. [DOI: 10.1039/c000981d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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López-Cudero A, Vidal-Iglesias FJ, Solla-Gullón J, Herrero E, Aldaz A, Feliu JM. Formic acid electrooxidation on Bi-modified Pt(110) single crystal electrodes. J Electroanal Chem (Lausanne) 2009. [DOI: 10.1016/j.jelechem.2009.09.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Hanawa H, Kunimatsu K, Uchida H, Watanabe M. In situ ATR-FTIR study of bulk CO oxidation on a polycrystalline Pt electrode. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.05.061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Hydrogen Adsorption on Activated Platinum Electrodes – An Electrochemical Impedance Spectroscopy Study. Z PHYS CHEM 2009. [DOI: 10.1524/zpch.2007.221.9-10.1319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
On the way to prepare stable platinum electrodes for the characterization of the Hupd reaction by electrochemical impedance measurements, a novel, feather-like platinum surface modification was found and characterized. In addition, a precursor morphology was identified. Electrochemical impedance measurements at selected potentials in the Hupd potential region yield information on double layer capacity, adsorption capacity, and adsorption resistance of the Hupd reaction for these two electrode morphologies.
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The Nonlinear Optical Response of Pt(111) Electrodes in Perchloric Acid Solution: Implications for the Potential of Zero Charge. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zpch.217.5.527.20459] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Second harmomic and sum frequency generation (SHG, SFG) are used to investigate the second-order non-linear optical response of a Pt(111) single-crystal electrodes in perchloric acid solution. In the potential window between hydrogen evolution and surface oxidation the SHG signal shows a pronounced minimum at 760 mVRHE and rises linearly with decreasing electrode potential. The potential of the minimum as well as the magnitude of the signal in the potential range of hydrogen adsorption depend on the pH of the electrolyte. The dependence of the SHG signal on excitation frequency in the range of 9000–1200 0cm−1 shows a continuous SHG signal increase to higher frequencies without characteristic surface resonances. The SHG signal is assigned to the excitation of a continuum of electronic levels. The maximum of the signal intensity is observed at potentials close to 0 VRHE, where hydrogen evolution takes place and the surface has a maximum of negative charge. Sum-frequency spectra of CO adsorbed on Pt(111) exhibit the known vibrational signature of terminal and bridge-like coordination and an additional resonant signal. On the same surface, the SHG signal is characterized by a high signal intensity which remains constant up to the CO oxidation potential. The potential dependence of the nonlinear response of the Pt(111)/CO surface as well as of the neat surface in perchloric acid indicates a high sensitivity to the surface charge. As a consequence, a negatively charged surface up to a potential of 600 mVRHE is deduced. Our results are at variance with a value for the potential of zero charge of 0.34 VRHE which was derived from the CO charge displacement method, but in agreement with the value based on the immersion technique (U. W. Hamm et al. , J. Electroanal. Chem. 414 (1996) 85).
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36
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Preparation and electrochemical characterization of low-index rhodium single crystal electrodes in sulfuric acid. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.04.061] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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38
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Adsorption behavior of acetonitrile on platinum and gold electrodes of various structures in solution of 0.5M H2SO4. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.01.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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40
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Soliman KA, Simeone FC, Kibler LA. Electrochemical behaviour of nano-faceted Ir(210). Electrochem commun 2009. [DOI: 10.1016/j.elecom.2008.10.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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41
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Mateo JJ, Tryk DA, Cabrera CR, Ishikawa Y. Underpotential deposition of hydrogen on Pt(111): a combined direct molecular dynamics/density functional theory study. MOLECULAR SIMULATION 2008. [DOI: 10.1080/08927020802178591] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Juan J. Mateo
- a Department of Chemistry and the Chemical Physics Program , University of Puerto Rico , San Juan, PR, USA
| | - Donald A. Tryk
- a Department of Chemistry and the Chemical Physics Program , University of Puerto Rico , San Juan, PR, USA
| | - Carlos R. Cabrera
- a Department of Chemistry and the Chemical Physics Program , University of Puerto Rico , San Juan, PR, USA
| | - Yasuyuki Ishikawa
- a Department of Chemistry and the Chemical Physics Program , University of Puerto Rico , San Juan, PR, USA
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García G, Bruno MM, Planes GA, Rodriguez JL, Barbero CA, Pastor E. Probe beam deflection studies of nanostructured catalyst materials for fuel cells. Phys Chem Chem Phys 2008; 10:6677-85. [PMID: 18989480 DOI: 10.1039/b806938g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Probe beam deflection (PBD) techniques, both as cyclic voltadeflectometry (CVD) and chronodeflectometry (CD), were applied for the first time to the study of the electrochemistry of nanostructured Pt materials which are commonly used as electrocatalysts in fuel cells. The electrochemical surface reactions, including faradaic processes, double layer charging and specific anion adsorption were easily detected. Quantitative analysis of the chronodeflectometric data made possible to elucidate the dynamics of double layer charging in such materials and to determine the potential of zero charge (pzc) of the metal present either as a monolithic mesoporous material or as metal nanoparticles supported on carbon. The electro-oxidation of CO, adsorbed on nanostructured Pt, was also studied by CVD and CD being able to detect the formation of CO2 and H3O+ related with the nucleation and growth process which controls the rate of CO stripping. The interplay of Pt oxide formation and COad electrooxidation, both in potential and time, was detected indicating possible application of the technique to other electrocatalysts.
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Affiliation(s)
- G García
- Departamento de Química Física, Universidad de la Laguna, 38071, Tenerife, Spain
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Brimaud S, Pronier S, Coutanceau C, Léger JM. New findings on CO electrooxidation at platinum nanoparticle surfaces. Electrochem commun 2008. [DOI: 10.1016/j.elecom.2008.08.045] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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44
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El-Shafei AA, Taguchi S, Aramata A. Zinc underpotential deposition at Pt(111) and Pt(110) under the influence of boric acid and chloride anions. RUSS J ELECTROCHEM+ 2008. [DOI: 10.1134/s1023193508060098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Lu L, Yin G, Tong Y, Zhang Y, Gao Y, Osawa M, Ye S. Electrochemical behaviors of dimethyl ether on platinum single crystal electrodes. Part I: Pt(111). J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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46
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Inkaew P, Zhou W, Korzeniewski C. CO monolayer oxidation at Pt(100) probed by potential step measurements in comparison to Pt(111) and Pt nanoparticle catalyst. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2007.11.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Ishikawa Y, Mateo JJ, Tryk DA, Cabrera CR. Direct molecular dynamics and density-functional theoretical study of the electrochemical hydrogen oxidation reaction and underpotential deposition of H on Pt(111). J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2006.10.011] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Climent V, García-Araez N, Herrero E, Feliu J. Potential of zero total charge of platinum single crystals: A local approach to stepped surfaces vicinal to Pt(111). RUSS J ELECTROCHEM+ 2006. [DOI: 10.1134/s1023193506110012] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Climent V, García-Araez N, Feliu JM. Influence of alkali cations on the infrared spectra of adsorbed (bi)sulphate on Pt(111) electrodes. Electrochem commun 2006. [DOI: 10.1016/j.elecom.2006.07.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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50
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