1
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Nacys A, Simkunaitė D, Balciunaite A, Zabielaite A, Upskuviene D, Levinas R, Jasulaitiene V, Kovalevskij V, Simkunaite-Stanyniene B, Tamasauskaite-Tamasiunaite L, Norkus E. Pt-Coated Ni Layer Supported on Ni Foam for Enhanced Electro-Oxidation of Formic Acid. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6427. [PMID: 37834564 PMCID: PMC10573893 DOI: 10.3390/ma16196427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/18/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023]
Abstract
A Pt-coated Ni layer supported on a Ni foam catalyst (denoted PtNi/Nifoam) was investigated for the electro-oxidation of the formic acid (FAO) in acidic media. The prepared PtNi/Nifoam catalyst was studied as a function of the formic acid (FA) concentration at bare Pt and PtNi/Nifoam catalysts. The catalytic activity of the PtNi/Nifoam catalysts, studied on the basis of the ratio of the direct and indirect current peaks (jd)/(jnd) for the FAO reaction, showed values approximately 10 times higher compared to those on bare Pt, particularly at low FA concentrations, reflecting the superiority of the former catalysts for the electro-oxidation of FA to CO2. Ni foams provide a large surface area for the FAO, while synergistic effects between Pt nanoparticles and Ni-oxy species layer on Ni foams contribute significantly to the enhanced electro-oxidation of FA via the direct pathway, making it almost equal to the indirect pathway, particularly at low FA concentrations.
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Affiliation(s)
- Antanas Nacys
- Center for Physical Sciences and Technology (FTMC), LT-10257 Vilnius, Lithuania; (D.S.); (A.B.); (A.Z.); (D.U.); (R.L.); (V.J.); (V.K.); (B.S.-S.); (L.T.-T.)
| | | | | | | | | | | | | | | | | | | | - Eugenijus Norkus
- Center for Physical Sciences and Technology (FTMC), LT-10257 Vilnius, Lithuania; (D.S.); (A.B.); (A.Z.); (D.U.); (R.L.); (V.J.); (V.K.); (B.S.-S.); (L.T.-T.)
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2
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Zhu X, Huang J, Eikerling M. pH Effects in a Model Electrocatalytic Reaction Disentangled. JACS AU 2023; 3:1052-1064. [PMID: 37124300 PMCID: PMC10131201 DOI: 10.1021/jacsau.2c00662] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/09/2023] [Accepted: 02/15/2023] [Indexed: 05/03/2023]
Abstract
Varying the solution pH not only changes the reactant concentrations in bulk solution but also the local reaction environment (LRE) that is shaped furthermore by macroscopic mass transport and microscopic electric double layer (EDL) effects. Understanding ubiquitous pH effects in electrocatalysis requires disentangling these interwoven factors, which is a difficult, if not impossible, task without physical modeling. Herein, we demonstrate how a hierarchical model that integrates microkinetics, double-layer charging, and macroscopic mass transport can help understand pH effects of the formic acid oxidation reaction (FAOR). In terms of the relation between the peak activity and the solution pH, intrinsic pH effects without consideration of changes in the LRE would lead to a bell-shaped curve with a peak at pH = 6. Adding only macroscopic mass transport, we can already reproduce qualitatively the experimentally observed trapezoidal shape with a plateau between pH 5 and 10 in perchlorate and sulfate solutions. A quantitative agreement with experimental data requires consideration of EDL effects beyond Frumkin correlations. Specifically, the peculiar nonmonotonic surface charging relation affects the free energies of adsorbed intermediates. We further discuss pH effects of FAOR in phosphate and chloride-containing solutions, for which anion adsorption becomes important. This study underpins the importance of a full consideration of multiple interrelated factors for the interpretation of pH effects in electrocatalysis.
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Affiliation(s)
- Xinwei Zhu
- Theory
and Computation of Energy Materials (IEK-13), Institute of Energy
and Climate Research, Forschungszentrum
Jülich GmbH, 52425 Jülich, Germany
- Chair
of Theory and Computation of Energy Materials, Faculty of Georesources
and Materials Engineering, RWTH Aachen University, 52062 Aachen, Germany
| | - Jun Huang
- Theory
and Computation of Energy Materials (IEK-13), Institute of Energy
and Climate Research, Forschungszentrum
Jülich GmbH, 52425 Jülich, Germany
| | - Michael Eikerling
- Theory
and Computation of Energy Materials (IEK-13), Institute of Energy
and Climate Research, Forschungszentrum
Jülich GmbH, 52425 Jülich, Germany
- Chair
of Theory and Computation of Energy Materials, Faculty of Georesources
and Materials Engineering, RWTH Aachen University, 52062 Aachen, Germany
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3
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Chen W, Zhang LL, Wei Z, Zhang MK, Cai J, Chen YX. The electrostatic effect and its role in promoting electrocatalytic reactions by specifically adsorbed anions. Phys Chem Chem Phys 2023; 25:8317-8330. [PMID: 36892566 DOI: 10.1039/d2cp04547h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The adsorption of anions and its impact on electrocatalytic reactions are fundamental topics in electrocatalysis. Previous studies revealed that adsorbed anions display an overall poisoning effect in most cases. However, for a few reactions such as the hydrogen evolution reaction (HER), oxidation of small organic molecules (SOMs), and reduction of CO2 and O2, some specifically adsorbed anions can promote their reaction kinetics under certain conditions. The promotion effect is frequently attributed to the adsorbate induced modification of the nature of the active sites, the change of the adsorption configuration and free energy of the key reactive intermediate which consequently change the activation energy, the pre-exponential factor of the rate determining step etc. In this paper, we will give a mini review of the indispensable role of the classical double layer effect in enhancing the kinetics of electrocatalytic reactions by anion adsorption. The ubiquitous electrostatic interactions change both the potential distribution and the concentration distribution of ionic species across the electric double layer (EDL), which alters the electrochemical driving force and effective concentration of the reactants. The contribution to the overall kinetics is highlighted by taking HER, oxidation of SOMs, reduction of CO2 and O2, as examples.
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Affiliation(s)
- Wei Chen
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
| | - Lu-Lu Zhang
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
| | - Zhen Wei
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
| | - Meng-Ke Zhang
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
| | - Jun Cai
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
| | - Yan-Xia Chen
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
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4
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Pérez-Martínez L, Herrero E, Cuesta A. Kinetics of formic acid dehydration on Pt electrodes by time-resolved ATR-SEIRAS. J Chem Phys 2023; 158:094705. [PMID: 36889977 DOI: 10.1063/5.0138791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
The potential dependence of the rate of dehydration of formic acid to adsorbed CO (COad) on Pt at pH 1 has been studied on a polycrystalline Pt surface by time-resolved surface-enhanced infrared absorption spectroscopy in the attenuated total reflection mode (ATR-SEIRAS) with simultaneous recording of current transients after a potential step. A range of formic acid concentrations has been used to obtain a deeper insight into the mechanism of the reaction. The experiments have allowed us to confirm that the potential dependence of the rate of dehydration has a bell shape, going through a maximum around the potential of zero total charge (pztc) of the most active site. The analysis of the integrated intensity and frequency of the bands corresponding to COL and COB/M shows a progressive population of the active sites on the surface. The observed potential dependence of the rate of formation of COad is consistent with a mechanism in which the reversible electroadsorption of HCOOad is followed by its rate-determining reduction to COad.
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Affiliation(s)
- Laura Pérez-Martínez
- School of Natural and Computing Sciences, University of Aberdeen, Aberdeen AB24 3UE Scotland, United Kingdom
| | - Enrique Herrero
- Instituto de Electroquímica, Universidad de Alicante, E-03080 Alicante, Spain
| | - Angel Cuesta
- School of Natural and Computing Sciences, University of Aberdeen, Aberdeen AB24 3UE Scotland, United Kingdom
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5
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Salamon MJ, Briega-Martos V, Cuesta A, Herrero E. Insight into the role of adsorbed formate in the oxidation of formic acid from pH-dependent experiments with Pt single-crystal electrodes. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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6
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Huang K, Crooks RM. Enhanced electrocatalytic activity of Cu-modified, high-index single Pt NPs for formic acid oxidation. Chem Sci 2022; 13:12479-12490. [PMID: 36349269 PMCID: PMC9628932 DOI: 10.1039/d2sc03433f] [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: 06/19/2022] [Accepted: 10/10/2022] [Indexed: 11/28/2022] Open
Abstract
A key goal of nanoparticle-based catalysis research is to correlate the structure of nanoparticles (NPs) to their catalytic function. The most common approach for achieving this goal is to synthesize ensembles of NPs, characterize the ensemble, and then evaluate its catalytic properties. This approach is effective, but it excludes the certainty of structural heterogeneity in the NP ensemble. One means of addressing this shortcoming is to carry out analyses on individual NPs. This approach makes it possible to establish direct correlations between structures of single NPs and, in the case reported here, their electrocatalytic properties. Accordingly, we report on enhanced electrocatalytic formic acid oxidation (FAO) activity using individual Cu-modified, high-indexed Pt NPs. The results show that the Cu-modified Pt NPs exhibit significantly higher currents for FAO than the Pt-only analogs. The increased activity is enabled by the Cu submonolayer on the highly stepped Pt surface, which enhances the direct FAO pathway but not the indirect pathway which proceeds via surface-absorbed CO*. Single-crystal Pt nanoparticles with a diameter of ∼200 nm were electrosynthesized, covered with a single monolayer of Cu, and then fully characterized. The resulting materials exhibit excellent electrocatalytic properties for formic acid oxidation.![]()
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Affiliation(s)
- Ke Huang
- Department of Chemistry, Texas Materials Institute, The University of Texas at Austin, 100 E. 24th St., Stop A1590, Austin, Texas, 78712, USA
| | - Richard M. Crooks
- Department of Chemistry, Texas Materials Institute, The University of Texas at Austin, 100 E. 24th St., Stop A1590, Austin, Texas, 78712, USA
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7
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8
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Hermann JM, Abdelrahman A, Jacob T, Kibler LA. The Effect of pH and Anion Adsorption on Formic Acid Oxidation on Au(111) Electrodes. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138279] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Zhang MK, Chen W, Wei Z, Xu ML, He Z, Cai J, Chen YX, Santos E. Mechanistic Implication of the pH Effect and H/D Kinetic Isotope Effect on HCOOH/HCOO – Oxidation at Pt Electrodes: A Study by Computer Simulation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01035] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meng-Ke Zhang
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Wei Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Zhen Wei
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Mian-Le Xu
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - ZhengDa He
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Jun Cai
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yan-Xia Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Elizabeth Santos
- Institute of Theoretical Chemistry, Ulm University, Ulm 89069, Germany
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10
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Zhang MK, Chen W, Xu ML, Wei Z, Zhou D, Cai J, Chen YX. How Buffers Resist Electrochemical Reaction-Induced pH Shift under a Rotating Disk Electrode Configuration. Anal Chem 2021; 93:1976-1983. [PMID: 33395265 DOI: 10.1021/acs.analchem.0c03033] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In mild acidic or alkaline solutions with limited buffer capacity, the pH at the electrode/electrolyte interface (pHs) may change significantly when the supply of H+ (or OH-) is slower than its consumption or production by the electrode reaction. Buffer pairs are usually applied to resist the change of pHs during the electrochemical reaction. In this work, by taking H2X ⇄ 2H+ + X + 2e- under a rotating disk electrode configuration as a model reaction, numerical simulations are carried out to figure out how pHs changes with the reaction rate in solutions of different bulk pHs (pHb in the range from 0 to 14) and in the presence of buffer pairs with different pKa values and concentrations. The quantitative relation of pHs, pHb, pKa, and concentration of buffer pairs as well as of the reaction current density is established. Diagrams of pHs and ΔpH (ΔpH = pHs - pHb) as a function of pHb and the reaction current density as well as of the jmax-pHb plots are provided, where jmax is defined as the maximum allowable current density within the acceptable tolerance of deviation of pHs from that of pHb (e.g., ΔpH < 0.2). The j-pHs diagrams allow one to estimate the pHs and ΔpH without direct measurement. The jmax-pHb plots may serve as a guideline for choosing buffer pairs with appropriate pKa and concentration to mitigate the pHs shift induced by electrode reactions.
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Affiliation(s)
- Meng-Ke Zhang
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Wei Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Mian-Le Xu
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Zhen Wei
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Da Zhou
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Jun Cai
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yan-Xia Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
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11
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Calderón-Cárdenas A, Hartl FW, Gallas JA, Varela H. Modeling the triple-path electro-oxidation of formic acid on platinum: Cyclic voltammetry and oscillations. Catal Today 2021. [DOI: 10.1016/j.cattod.2019.04.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Niu Z, Wan Y, Li X, Zhang M, Liu B, Chen Z, Lu G, Yan K. In-situ regulation of formic acid oxidation via elastic strains. J Catal 2020. [DOI: 10.1016/j.jcat.2020.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Betts A, Briega-Martos V, Cuesta A, Herrero E. Adsorbed Formate is the Last Common Intermediate in the Dual-Path Mechanism of the Electrooxidation of Formic Acid. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00791] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander Betts
- Department of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, AB24 3UE Scotland, U.K
| | - Valentín Briega-Martos
- Instituto de Electroquimı́ca, Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - Angel Cuesta
- Department of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, AB24 3UE Scotland, U.K
| | - Enrique Herrero
- Instituto de Electroquimı́ca, Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
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14
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Chen X, Granda-Marulanda LP, McCrum IT, Koper MTM. Adsorption processes on a Pd monolayer-modified Pt(111) electrode. Chem Sci 2020; 11:1703-1713. [PMID: 34084392 PMCID: PMC8148025 DOI: 10.1039/c9sc05307g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Specific adsorption of anions is an important aspect in surface electrochemistry for its influence on reaction kinetics in either a promoted or inhibited fashion. Perchloric acid is typically considered as an ideal electrolyte for investigating electrocatalytic reactions due to the lack of specific adsorption of the perchlorate anion on several metal electrodes. In this work, cyclic voltammetry and computational methods are combined to investigate the interfacial processes on a Pd monolayer deposited on Pt(111) single crystal electrode in perchloric acid solution. The “hydrogen region” of this PdMLPt(111) surface exhibits two voltammetric peaks: the first “hydrogen peak” at 0.246 VRHE actually involves the replacement of hydrogen by hydroxyl, and the second “hydrogen peak” HII at 0.306 VRHE appears to be the replacement of adsorbed hydroxyl by specific perchlorate adsorption. The two peaks merge into a single peak when a more strongly adsorbed anion, such as sulfate, is involved. Our density functional theory calculations qualitatively support the peak assignment and show that anions generally bind more strongly to the PdMLPt(111) surface than to Pt(111). Specific adsorption of anions is an important aspect in surface electrochemistry for its influence on reaction kinetics in either a promoted or inhibited fashion.![]()
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Affiliation(s)
- Xiaoting Chen
- Leiden Institute of Chemistry, Leiden University PO Box 9502 Leiden 2300 RA The Netherlands
| | | | - Ian T McCrum
- Leiden Institute of Chemistry, Leiden University PO Box 9502 Leiden 2300 RA The Netherlands
| | - Marc T M Koper
- Leiden Institute of Chemistry, Leiden University PO Box 9502 Leiden 2300 RA The Netherlands
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15
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Fiori I, Melle G, Sitta E. Halide adsorption effect on methanol electro-oxidation reaction studied by dynamic instabilities. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Freire JG, Calderón-Cárdenas A, Varela H, Gallas JAC. Phase diagrams and dynamical evolution of the triple-pathway electro-oxidation of formic acid on platinum. Phys Chem Chem Phys 2020; 22:1078-1091. [DOI: 10.1039/c9cp04324a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A detailed numerical study including stability phase diagrams for the dynamical evolution of the electro-oxidation of formic acid on platinum was reported. The study evidences the existence of intertwined stability phases and the absence of chaos.
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Affiliation(s)
- Joana G. Freire
- Instituto Dom Luiz (IDL)
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
| | - Alfredo Calderón-Cárdenas
- Instituto de Química de São Carlos
- Universidade de São Paulo
- 13560-970 São Carlos
- Brazil
- GIFBA, Universidad de Nariño
| | - Hamilton Varela
- Instituto de Química de São Carlos
- Universidade de São Paulo
- 13560-970 São Carlos
- Brazil
- Max-Planck Institute for the Physics of Complex Systems
| | - Jason A. C. Gallas
- Max-Planck Institute for the Physics of Complex Systems
- 01187 Dresden
- Germany
- Instituto de Altos Estudos da Paraíba
- 58039-190 João Pessoa
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17
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Lei J, Wei Z, Xu ML, Wei J, Chen YX, Ye S. Effect of sulfate adlayer on formic acid oxidation on Pd(111) electrode. CHINESE J CHEM PHYS 2019. [DOI: 10.1063/1674-0068/cjcp1904079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Jing Lei
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Zhen Wei
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Mian-le Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Jie Wei
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yan-xia Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Shen Ye
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
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18
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Abdelrahman A, Hermann JM, Jacob T, Kibler LA. Adsorption of Acetate on Au(111): An in-situ Scanning Tunnelling Microscopy Study and Implications on Formic Acid Electrooxidation. Chemphyschem 2019; 20:2989-2996. [PMID: 31369687 DOI: 10.1002/cphc.201900560] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/01/2019] [Indexed: 11/06/2022]
Abstract
The adsorption of acetate on an Au(111) electrode surface in contact with acetic acid at pH 2.7 was imaged in-situ using scanning tunnelling microscopy (STM). Two different ordered structures were imaged for acetate adsorbed in the bidentate configuration on the unreconstructed 1 × 1 surface at 0.95 V (vs. the saturated calomel electrode, SCE). The first structure, ( 19 × 19 ) R 23 . 45 ∘ , is metastable and transforms at constant potential within 20 minutes to a ( 2 × 2 ) structure, which is thermodynamically more favourable. The ( 2 × 2 ) acetate adlayer starts to form at step edges and propagates via nucleation and growth onto terraces. The findings from in-situ STM are in agreement with the electrochemical behaviour of acetate on Au(111) characterized by voltammetry. A comparison is made with formate adsorption on Au(111). While acetate is not reactive, in contrast to formate, it can act as a spectator species in formic acid electrooxidation.
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Affiliation(s)
| | | | - Timo Jacob
- Institut für Elektrochemie, Universität Ulm, 89069, Ulm, Germany
| | - Ludwig A Kibler
- Institut für Elektrochemie, Universität Ulm, 89069, Ulm, Germany
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19
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Lee J, Yoo JK, Lee H, Kim SH, Sohn Y, Rhee CK. Formic acid oxidation on Pt deposit model catalysts on Au: Single-layered Pt deposits, plateau-type Pt deposits, and conical Pt deposits. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.107] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Ou L, Zhao K, Chen Y, Jin J. Mechanistic Understanding of the Effect of Surface Composition of Pt‐Ru Bimetallic Alloy Electrocatalysts on HCOOH Oxidation Pathways at Acid Electrochemical Interface. ChemistrySelect 2019. [DOI: 10.1002/slct.201900908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lihui Ou
- Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecologic Economic ZoneCollege of Chemistry and Materials EngineeringHunan University of Arts and Science 3150 Dongting Road 415000, Changde China
| | - Kexin Zhao
- Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecologic Economic ZoneCollege of Chemistry and Materials EngineeringHunan University of Arts and Science 3150 Dongting Road 415000, Changde China
| | - Yuandao Chen
- Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecologic Economic ZoneCollege of Chemistry and Materials EngineeringHunan University of Arts and Science 3150 Dongting Road 415000, Changde China
| | - Junling Jin
- Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecologic Economic ZoneCollege of Chemistry and Materials EngineeringHunan University of Arts and Science 3150 Dongting Road 415000, Changde China
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21
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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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22
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Effects of the Interfacial Structure on the Methanol Oxidation on Platinum Single Crystal Electrodes. SURFACES 2019. [DOI: 10.3390/surfaces2010014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Methanol oxidation has been studied on low index platinum single crystal electrodes using methanol solutions with different pH (1–5) in the absence of specific adsorption. The goal is to determine the role of the interfacial structure in the reaction. The comparison between the voltammetric profiles obtained in the presence and absence of methanol indicates that methanol oxidation is only taking place when the surface is partially covered by adsorbed OH. Thus, on the Pt(111) electrode, the onset for the direct oxidation of methanol and the adsorption of OH coincide. In this case, the adsorbed OH species are not a mere spectator, because the obtained results for the reaction order for methanol and the proton concentrations indicate that OH adsorbed species are involved in the reaction mechanism. On the other hand, the dehydrogenation step to yield adsorbed CO on the Pt(100) surface coincides with the onset of OH adsorption on this electrode. It is proposed that adsorbed OH collaborates in the dehydrogenation step during methanol oxidation, facilitating either the adsorption of the methanol in the right configuration or the cleavage of the C—H bond.
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23
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Briega-Martos V, Solla-Gullón J, Koper MT, Herrero E, Feliu JM. Electrocatalytic enhancement of formic acid oxidation reaction by acetonitrile on well-defined platinum surfaces. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Busó-Rogero C, Ferre-Vilaplana A, Herrero E, Feliu JM. The role of formic acid/formate equilibria in the oxidation of formic acid on Pt (111). Electrochem commun 2019. [DOI: 10.1016/j.elecom.2018.11.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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25
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Melle GB, Hartl FW, Varela H, Sitta E. The effect of solution pH on the oscillatory electro-oxidation of methanol. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.08.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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The determination of thermal junction potential difference. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9246-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Gamler JTL, Ashberry HM, Skrabalak SE, Koczkur KM. Random Alloyed versus Intermetallic Nanoparticles: A Comparison of Electrocatalytic Performance. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1801563. [PMID: 29984851 DOI: 10.1002/adma.201801563] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/12/2018] [Indexed: 05/15/2023]
Abstract
As synthetic methods advance for metal nanoparticles, more rigorous studies of structure-function relationships can be made. Many electrocatalytic processes depend on the size, shape, and composition of the nanocatalysts. Here, the properties and electrocatalytic behavior of random alloyed and intermetallic nanoparticles are compared. Beginning with an introduction of metallic nanoparticles for catalysis and the unique features of bimetallic compositions, the discussion transitions to case studies of nanoscale electrocatalysts where direct comparisons of alloy and intermetallic compositions are undertaken for methanol electrooxidation, formic acid electrooxidation, the oxygen reduction reaction, and the electroreduction of carbon dioxide (CO2 ). Design and synthesis strategies for random alloyed and intermetallic nanoparticles are discussed, with an emphasis on Pt-M and Cu-M compositions as model systems. The differences in catalytic performance between alloys and intermetallic nanoparticles are highlighted in order to provide an outlook for future electrocatalyst design.
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Affiliation(s)
- Jocelyn T L Gamler
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Hannah M Ashberry
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Sara E Skrabalak
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Kallum M Koczkur
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
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28
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Zhang W, Chen P, Chen S, Wei Y. Electrolyte sensitivity of TEMPO mediated methanol and glycine electrooxidation. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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29
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Hartl FW, Varela H. The Effect of Solution pH and Temperature on the Oscillatory Electro-Oxidation of Formic Acid on Platinum. ChemistrySelect 2017. [DOI: 10.1002/slct.201702008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fabian W. Hartl
- Department of Physical Chemistry; Institute of Chemistry of São Carlos; University of São Paulo, POBox 780; 13560-970 São Carlos, SP Brazil
| | - Hamilton Varela
- Department of Physical Chemistry; Institute of Chemistry of São Carlos; University of São Paulo, POBox 780; 13560-970 São Carlos, SP Brazil
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30
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Jiang K, Wang JY, Zhao TT, Cai WB. Formic acid oxidation at palladium electrode in acidic media containing chloride anions: An in situ ATR-SEIRAS investigation. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.12.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Perales-Rondón J, Busó-Rogero C, Solla-Gullón J, Herrero E, Feliu J. Formic acid electrooxidation on thallium modified platinum single crystal electrodes. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.09.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Jusys Z, Behm R. Electrooxidation of formic acid on a polycrystalline Au film electrode–A comparison with mass transport limited bulk CO oxidation and kinetically limited oxalic acid oxidation. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.11.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Wei Y, Zuo XQ, He ZD, Chen W, Lin CH, Cai J, Sartin M, Chen YX. The mechanisms of HCOOH/HCOO – oxidation on Pt electrodes: Implication from the pH effect and H/D kinetic isotope effect. Electrochem commun 2017. [DOI: 10.1016/j.elecom.2017.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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34
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Dynamics of the Interaction of Formic Acid with a Polycrystalline Pt Film Electrode: a Time-Resolved ATR-FTIR Spectroscopy Study at Low Potentials and Temperatures. Electrocatalysis (N Y) 2017. [DOI: 10.1007/s12678-017-0392-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Gisbert R, Boronat-González A, Feliu JM, Herrero E. The Role of Adsorption in the Electrocatalysis of Hydrazine on Platinum Electrodes. ChemElectroChem 2017. [DOI: 10.1002/celc.201600901] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rubén Gisbert
- Instituto de Electroquímica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Ana Boronat-González
- Instituto de Electroquímica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Juan M. Feliu
- Instituto de Electroquímica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Enrique Herrero
- Instituto de Electroquímica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
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36
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Wang P, Steinmann SN, Fu G, Michel C, Sautet P. Key Role of Anionic Doping for H2 Production from Formic Acid on Pd(111). ACS Catal 2017. [DOI: 10.1021/acscatal.6b03544] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pei Wang
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Institution
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F-69342, Lyon, France
| | - Stephan N. Steinmann
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F-69342, Lyon, France
| | - Gang Fu
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Institution
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Carine Michel
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F-69342, Lyon, France
| | - Philippe Sautet
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F-69342, Lyon, France
- Department
of Chemical and Biomolecular Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States
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37
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McPherson IJ, Ash PA, Jacobs RMJ, Vincent KA. Formate adsorption on Pt nanoparticles during formic acid electro-oxidation: insights from in situ infrared spectroscopy. Chem Commun (Camb) 2016; 52:12665-12668. [PMID: 27722249 DOI: 10.1039/c6cc05955d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adsorbed formate is observed on a supported Pt nanoparticle for the first time during formic acid electro-oxidation. Bands assigned to OCO stretching and CH bending reveal some OCO but little CH bond weakening on adsorption compared to the free anion. The formate potential dependence is similar to polycrystalline electrodes while adsorbed CO persists up to +1.2 V, 0.5 V higher than on polycrystalline Pt.
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Affiliation(s)
- Ian J McPherson
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK.
| | - Philip A Ash
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK.
| | - Robert M J Jacobs
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Kylie A Vincent
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK.
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38
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Yaguchi M, Uchida T, Motobayashi K, Osawa M. Speciation of Adsorbed Phosphate at Gold Electrodes: A Combined Surface-Enhanced Infrared Absorption Spectroscopy and DFT Study. J Phys Chem Lett 2016; 7:3097-3102. [PMID: 27453430 DOI: 10.1021/acs.jpclett.6b01342] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Despite the significance of phosphate buffer solutions in (bio)electrochemistry, detailed adsorption properties of phosphate anions at metal surfaces remain poorly understood. Herein, phosphate adsorption at quasi-Au(111) surfaces prepared by a chemical deposition technique has been systematically investigated over a wide range of pH by surface-enhanced infrared absorption spectroscopy in the ATR configuration (ATR-SEIRAS). Two different pH-dependent states of adsorbed phosphate are spectroscopically detected. Together with DFT calculations, the present study reveals that pKa for adsorbed phosphate species at the interface is much lower than that for phosphate species in the bulk solution; the dominant phosphate anion, H2PO4(-) at 2 < pH < 7 or HPO4(2-) at 7 < pH < 12, undergoes deprotonation upon adsorption and transforms into the adsorbed HPO4 or PO4, respectively. This study leads to a conclusion different than earlier spectroscopic studies have reached, highlighting the capability of the ATR-SEIRAS technique at electrified metal-solution interfaces.
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Affiliation(s)
- Momo Yaguchi
- Institute for Catalysis, Hokkaido University , Sapporo 001-0021, Japan
- Graduate School of Environmental Science, Hokkaido University , Sapporo 060-0810, Japan
| | - Taro Uchida
- Center for Energy and Environmental Science, Shinshu University , Nagano 390-8621, Japan
| | - Kenta Motobayashi
- Institute for Catalysis, Hokkaido University , Sapporo 001-0021, Japan
| | - Masatoshi Osawa
- Institute for Catalysis, Hokkaido University , Sapporo 001-0021, Japan
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39
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Zülke AA, Varela H. The effect of temperature on the coupled slow and fast dynamics of an electrochemical oscillator. Sci Rep 2016; 6:24553. [PMID: 27079514 PMCID: PMC4832193 DOI: 10.1038/srep24553] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 03/31/2016] [Indexed: 11/25/2022] Open
Abstract
The coupling among disparate time-scales is ubiquitous in many chemical and biological systems. We have recently investigated the effect of fast and, long-term, slow dynamics in surface processes underlying some electrocatalytic reactions. Herein we report on the effect of temperature on the coupled slow and fast dynamics of a model system, namely the electro-oxidation of formic acid on platinum studied at five temperatures between 5 and 45 °C. The main result was a turning point found at 25 °C, which clearly defines two regions for the temperature dependency on the overall kinetics. In addition, the long-term evolution allowed us to compare reaction steps related to fast and slow evolutions. Results were discussed in terms of the key role of PtO species, which chemically couple slow and fast dynamics. In summary we were able to: (a) identify the competition between two reaction steps as responsible for the occurrence of two temperature domains; (b) compare the relative activation energies of these two steps; and (c) suggest the role of a given reaction step on the period-increasing set of reactions involved in the oscillatory dynamics. The introduced methodology could be applied to other systems to uncover the temperature dependence of complex chemical networks.
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Affiliation(s)
- Alana A Zülke
- Institute of Chemistry of São Carlos, University of São Paulo, POBox 780, 13560-970, São Carlos, SP, Brazil
| | - Hamilton Varela
- Institute of Chemistry of São Carlos, University of São Paulo, POBox 780, 13560-970, São Carlos, SP, Brazil
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40
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41
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Wang Y, He Q, Wei H, Guo J, Ding K, Wang Q, Wang Z, Wei S, Guo Z. Optimal Electrocatalytic Pd/MWNTs Nanocatalysts toward Formic Acid Oxidation. Electrochim Acta 2015; 184:452-465. [PMID: 29622817 DOI: 10.1016/j.electacta.2015.10.046] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The operating conditions such as composition of electrolyte and temperature can greatly influence the formic acid (HCOOH) oxidation reaction (FAOR). Palladium decorated multi-walled carbon nanotubes (Pd/MWNTs) were successfully synthesized and employed as nanocatalysts to explore the effects of formic acid, sulfuric acid (H2SO4) concentration and temperature on FAOR. Both the hydrogen adsorption in low potential range and the oxidation of poisoning species during the high potential range in cyclic voltammetry were demonstrated to contribute to the enhanced electroactivity of Pd/MWNTs. The as-synthesized Pd/MWNTs gave the best performance under a condition with balanced adsorptions of HCOOH and H2SO4 molecules. The dominant dehydrogenation pathway on Pd/MWNTs can be largely depressed by the increased dehydration pathway, leading to an increased charge transfer resistance (Rct ). Increasing HCOOH concentration could directly increase the dehydration process proportion and cause the production of COads species. H2SO4 as donor of H+ greatly facilitated the onset oxidation of HCOOH in the beginning process but it largely depressed the HCOOH oxidation with excess amount of H+. Enhanced ion mobility with increasing the temperature was mainly responsible for the increased current densities, improved tolerance stabilities and reduced Rct values, while dehydration process was also increased simultaneously.
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Affiliation(s)
- Yiran Wang
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996 USA
| | - Qingliang He
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996 USA
| | - Huige Wei
- Department of Chemistry and Biochemistry, and Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710 USA
| | - Jiang Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996 USA
| | - Keqiang Ding
- College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024 China
| | - Qiang Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083 China
| | - Zhe Wang
- Chemistry Department, Xavier University, New Orleans, LA 70125 USA
| | - Suying Wei
- Department of Chemistry and Biochemistry, and Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710 USA
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996 USA
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42
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Perales-Rondón JV, Brimaud S, Solla-Gullón J, Herrero E, Jürgen Behm R, Feliu JM. Further Insights into the Formic Acid Oxidation Mechanism on Platinum: pH and Anion Adsorption Effects. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.08.155] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Steinmann SN, Michel C, Schwiedernoch R, Filhol JS, Sautet P. Modeling the HCOOH/CO2Electrocatalytic Reaction: When Details Are Key. Chemphyschem 2015; 16:2307-11. [DOI: 10.1002/cphc.201500187] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/29/2015] [Indexed: 11/09/2022]
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44
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Perales-Rondón JV, Herrero E, Feliu JM. On the activation energy of the formic acid oxidation reaction on platinum electrodes. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.02.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Schwarz KA, Sundararaman R, Moffat TP, Allison TC. Formic acid oxidation on platinum: a simple mechanistic study. Phys Chem Chem Phys 2015. [DOI: 10.1039/c5cp03045e] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Formic acid oxidation on Pt(111) under electrocatalytic conditions occurs when a formate anion approaches the Pt(111) surface in the CH-down orientation, and barrierlessly releases carbon dioxide as the H binds to the surface.
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Affiliation(s)
- Kathleen A. Schwarz
- National Institute of Standards and Technology
- Material Measurement Laboratory
- Gaithersburg
- USA
| | | | - Thomas P. Moffat
- National Institute of Standards and Technology
- Material Measurement Laboratory
- Gaithersburg
- USA
| | - Thomas C. Allison
- National Institute of Standards and Technology
- Material Measurement Laboratory
- Gaithersburg
- USA
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46
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Ferre-Vilaplana A, Perales-Rondón JV, Feliu JM, Herrero E. Understanding the Effect of the Adatoms in the Formic Acid Oxidation Mechanism on Pt(111) Electrodes. ACS Catal 2014. [DOI: 10.1021/cs501729j] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Adolfo Ferre-Vilaplana
- Instituto
Tecnológico de Informática, Ciudad Politécnica de la Innovación, Camino de Vera s/n, E-46022 Valencia, Spain
- Departamento
de Sistemas Informáticos y Computación, Escuela Politécnica
Superior de Alcoy, Universidad Politécnica de Valencia, Plaza Ferrándiz
y Carbonell s/n, E-03801 Alcoy, Spain
| | | | - Juan M. Feliu
- Instituto
de Electroquı́mica, Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - Enrique Herrero
- Instituto
de Electroquı́mica, Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
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47
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Jiang K, Zhang HX, Zou S, Cai WB. Electrocatalysis of formic acid on palladium and platinum surfaces: from fundamental mechanisms to fuel cell applications. Phys Chem Chem Phys 2014; 16:20360-76. [DOI: 10.1039/c4cp03151b] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A brief overview is presented on recent progress in mechanistic studies of formic acid oxidation, synthesis of novel Pd- and Pt-based nanocatalysts and their practical applications in direct formic acid fuel cells.
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Affiliation(s)
- Kun Jiang
- Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Han-Xuan Zhang
- Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
| | - Shouzhong Zou
- Department of Chemistry and Biochemistry
- Miami University
- Oxford, USA
| | - Wen-Bin Cai
- Shanghai Key Laboratory for Molecular Catalysis and Innovative Materials
- Department of Chemistry
- Fudan University
- Shanghai 200433, China
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