1
|
Hoshi N, Nakamura M, Kubo R, Suzuki R. Enhanced oxygen reduction reaction on caffeine-modified platinum single-crystal electrodes. Commun Chem 2024; 7:23. [PMID: 38310168 PMCID: PMC10838267 DOI: 10.1038/s42004-024-01113-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 01/23/2024] [Indexed: 02/05/2024] Open
Abstract
Enhancing the activity of the oxygen reduction reaction (ORR) is crucial for fuel cell development, and hydrophobic species are known to increase the ORR activity. This paper reports that caffeine enhanced the specific ORR activity of Pt(111) 11-fold compared to that without caffeine in a 0.1 M HClO4 aqueous solution. Moreover, caffeine increased the ORR activity of Pt(110) 2.5-fold; however, the activity of Pt(100) was unaffected. The infrared (IR) band of PtOH (blocking species of the ORR) decreased for all the surfaces. Caffeine was adsorbed with its molecular plane perpendicular to the Pt(111) and Pt(110) surfaces and tilted relative to the Pt(100) surface. Thus, the effects of caffeine on the ORR activity can be rationalized by a decrease in PtOH coverage and the difference in adsorption geometry of caffeine.
Collapse
Affiliation(s)
- Nagahiro Hoshi
- Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba, 263-8522, Japan.
| | - Masashi Nakamura
- Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba, 263-8522, Japan
| | - Ryuta Kubo
- Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba, 263-8522, Japan
| | - Rui Suzuki
- Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba, 263-8522, Japan
| |
Collapse
|
2
|
Wesley TS, Hülsey MJ, Westendorff KS, Lewis NB, Crumlin EJ, Román-Leshkov Y, Surendranath Y. Metal nanoparticles supported on a nonconductive oxide undergo pH-dependent spontaneous polarization. Chem Sci 2023; 14:7154-7160. [PMID: 37416702 PMCID: PMC10321480 DOI: 10.1039/d3sc00884c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/24/2023] [Indexed: 07/08/2023] Open
Abstract
Electrochemical polarization, which often plays a critical role in driving chemical reactions at solid-liquid interfaces, can arise spontaneously through the exchange of ions and/or electrons across the interface. However, the extent to which such spontaneous polarization prevails at nonconductive interfaces remains unclear because such materials preclude measuring and controlling the degree of interfacial polarization via standard (i.e., wired) potentiometric methods. Herein, we circumvent the limitations of wired potentiometry by applying infrared and ambient pressure X-ray photoelectron spectroscopies (AP-XPS) to probe the electrochemical potential of nonconductive interfaces as a function of solution composition. As a model class of macroscopically nonconductive interfaces, we specifically probe the degree of spontaneous polarization of ZrO2-supported Pt and Au nanoparticles immersed in aqueous solutions of varying pH. Shifts in the Pt-adsorbed CO vibrational band position evince electrochemical polarization of the Pt/ZrO2-water interface with changing pH, and AP-XPS reveals quasi-Nernstian shifts of the electrochemical potential of Pt and Au with pH in the presence of H2. These results indicate that spontaneous proton transfer via equilibrated H+/H2 interconversion spontaneously polarizes metal nanoparticles even when supported on a nonconductive host. Consequently, these findings indicate that solution composition (i.e., pH) can be an effective handle for tuning interfacial electrical polarization and potential at nonconductive interfaces.
Collapse
Affiliation(s)
- Thejas S Wesley
- Department of Chemical Engineering, Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Max J Hülsey
- Department of Chemistry, Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Karl S Westendorff
- Department of Chemical Engineering, Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Noah B Lewis
- Department of Chemistry, Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Ethan J Crumlin
- Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
| | - Yuriy Román-Leshkov
- Department of Chemical Engineering, Massachusetts Institute of Technology Cambridge MA 02139 USA
- Department of Chemistry, Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Yogesh Surendranath
- Department of Chemical Engineering, Massachusetts Institute of Technology Cambridge MA 02139 USA
- Department of Chemistry, Massachusetts Institute of Technology Cambridge MA 02139 USA
| |
Collapse
|
3
|
Ratschmeier B, Roß G, Kemna A, Braunschweig B. Influence of interfacial water and cations on the oxidation of CO at the platinum/ionic liquid interface. Phys Chem Chem Phys 2023; 25:1014-1022. [PMID: 36533703 DOI: 10.1039/d2cp05178h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CO oxidation is fundamental to the development of new catalyst materials for fuel cells and key for complete oxidation of small alcohols like methanol or ethanol on Pt catalysts. So far, room-temperature ionic liquids (RTIL) have been used to modify the selectivity and activity in electrocatalysis. In order to understand the mechanism of CO oxidation in RTIL in more detail we have investigated this reaction at the Pt(111)/1-butyl-3-methylimidazolium trifluorosulfonylimide [BMIM][NTf2] electrode/electrolyte interface as a function of H2O concentration and electrode potential with in situ sum-frequency generation (SFG) spectroscopy and infrared absorption spectroscopy (IRAS). Using SFG spectroscopy, we address the changes of linearly bonded CO molecules on Pt(111), while we monitor the changes in the bulk electrolyte with IRAS through vibrational bands from H2O, CO2 and CO. The presence of water in [BMIM][NTf2] shifts the onset potential for CO oxidation by more than 200 mV when the water concentration is increased from 0.01 to 1.5 M, which we relate to the incorporation and the availability of water at the electrode/electrolyte interface. The nature of the RTIL cation has also a large effect on the surface excess of H2O since RTILs like [BMMIM][NTf2] and [BMPyrr][NTf2] which are prone to form closed-packed structures, can block the incorporation of water and lead to more sluggish CO oxidation with larger overpotentials and oxidation in a much wider potential range for which we provide evidence by additional SFG measurements. These results clearly show that the choice of the RTIL is important for CO oxidation on Pt(111) electrode surfaces - an observation that is likely highly relevant also to other catalysts and catalytic reactions that require the presence of interfacial water.
Collapse
Affiliation(s)
- Björn Ratschmeier
- Institute of Physical Chemistry, Westfälische Wilhelms University Münster, Corrensstraße 28/30, 48149, Münster, Germany.
| | - Gina Roß
- Institute of Physical Chemistry, Westfälische Wilhelms University Münster, Corrensstraße 28/30, 48149, Münster, Germany.
| | - Andre Kemna
- Institute of Physical Chemistry, Westfälische Wilhelms University Münster, Corrensstraße 28/30, 48149, Münster, Germany.
| | - Björn Braunschweig
- Institute of Physical Chemistry, Westfälische Wilhelms University Münster, Corrensstraße 28/30, 48149, Münster, Germany.
| |
Collapse
|
4
|
Engineering gold-platinum core-shell nanoparticles by self-limitation in solution. Commun Chem 2022; 5:71. [PMID: 36697905 PMCID: PMC9814372 DOI: 10.1038/s42004-022-00680-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 05/04/2022] [Indexed: 01/28/2023] Open
Abstract
Core-shell particles with thin noble metal shells represent an attractive material class with potential for various applications ranging from catalysis to biomedical and pharmaceutical applications to optical crystals. The synthesis of well-defined core-shell architectures remains, however, highly challenging. Here, we demonstrate that atomically-thin and homogeneous platinum shells can be grown via a colloidal synthesis method on a variety of gold nanostructures ranging from spherical nanoparticles to nanorods and nanocubes. The synthesis is based on the exchange of low binding citrate ligands on gold, the reduction of platinum and the subsequent kinetically hindered growth by carbon monoxide as strong binding ligand. The prerequisites for homogeneous growth are low core-binding ligands with moderate fast ligand exchange in solution, a mild reducing agent to mitigate homonucleation and a strong affinity of a second ligand system that can bind to the shell's surface. The simplicity of the described synthetic route can potentially be adapted to various other material libraries to obtain atomically smooth core-shell systems.
Collapse
|
5
|
Tao Z, Pearce AJ, Mayer JM, Wang H. Bridge Sites of Au Surfaces Are Active for Electrocatalytic CO 2 Reduction. J Am Chem Soc 2022; 144:8641-8648. [PMID: 35507510 PMCID: PMC9158392 DOI: 10.1021/jacs.2c01098] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Prior in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) studies of electrochemical CO2 reduction catalyzed by Au, one of the most selective and active electrocatalysts to produce CO from CO2, suggest that the reaction proceeds solely on the top sites of the Au surface. This finding is worth updating with an improved spectroelectrochemical system where in situ IR measurements can be performed under real reaction conditions that yield high CO selectivity. Herein, we report the preparation of an Au-coated Si ATR crystal electrode with both high catalytic activity for CO2 reduction and strong surface enhancement of IR signals validated in the same spectroelectrochemical cell, which allows us to probe the adsorption and desorption behavior of bridge-bonded *CO species (*COB). We find that the Au surface restructures irreversibly to give an increased number of bridge sites for CO adsorption within the initial tens of seconds of CO2 reduction. By studying the potential-dependent desorption kinetics of *COB and quantifying the steady-state surface concentration of *COB under reaction conditions, we further show that *COB are active reaction intermediates for CO2 reduction to CO on this Au electrode. At medium overpotential, as high as 38% of the reaction occurs on the bridge sites.
Collapse
Affiliation(s)
- Zixu Tao
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Adam J Pearce
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - James M Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Hailiang Wang
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| |
Collapse
|
6
|
SO2 electrooxidation reaction on Pt single crystal surfaces in acidic media: Electrochemical and in situ FTIR studies. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
7
|
Wei DY, Yue MF, Qin SN, Zhang S, Wu YF, Xu GY, Zhang H, Tian ZQ, Li JF. In Situ Raman Observation of Oxygen Activation and Reaction at Platinum-Ceria Interfaces during CO Oxidation. J Am Chem Soc 2021; 143:15635-15643. [PMID: 34541841 DOI: 10.1021/jacs.1c04590] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Understanding the fundamental insights of oxygen activation and reaction at metal-oxide interfaces is of significant importance yet remains a major challenge due to the difficulty in in situ characterization of active oxygen species. Herein, the activation and reaction of molecular oxygen during CO oxidation at platinum-ceria interfaces has been in situ explored using surface-enhanced Raman spectroscopy (SERS) via a borrowing strategy, and different active oxygen species and their evolution during CO oxidation at platinum-ceria interfaces have been directly observed. In situ Raman spectroscopic evidence with isotopic exchange experiments demonstrate that oxygen is efficiently dissociated to chemisorbed O on Pt and lattice Ce-O species simultaneously at interfacial Ce3+ defect sites under CO oxidation, leading to a much higher activity at platinum-ceria interfaces compared to that at Pt alone. Further in situ time-resolved SERS studies and density functional theory simulations reveal a more efficient molecular pathway through the reaction between adsorbed CO and chemisorbed Pt-O species transferred from the interfaces. This work deepens the fundamental understandings on oxygen activation and CO oxidation at metal-oxide interfaces and offers a sensitive technique for the in situ characterization of oxygen species under working conditions.
Collapse
Affiliation(s)
- Di-Ye Wei
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Mu-Fei Yue
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Si-Na Qin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Sa Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Yuan-Fei Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Ge-Yang Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Hua Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Zhong-Qun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China
| | - Jian-Feng Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, College of Materials, iChEM, Fujian Key Laboratory of Advanced Materials, College of Energy, Xiamen University, Xiamen 361005, China.,College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
| |
Collapse
|
8
|
Fang Y, Hu R, Ding SY, Tian ZQ. A quantitative simulation method for electrochemical infrared and Raman spectroscopies of single-crystal metal electrodes. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
9
|
Wesley T, Román-Leshkov Y, Surendranath Y. Spontaneous Electric Fields Play a Key Role in Thermochemical Catalysis at Metal-Liquid Interfaces. ACS CENTRAL SCIENCE 2021; 7:1045-1055. [PMID: 34235265 PMCID: PMC8228591 DOI: 10.1021/acscentsci.1c00293] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 05/20/2023]
Abstract
Large oriented electric fields spontaneously arise at all solid-liquid interfaces via the exchange of ions and/or electrons with the solution. Although intrinsic electric fields are known to play an important role in molecular and biological catalysis, the role of spontaneous polarization in heterogeneous thermocatalysis remains unclear because the catalysts employed are typically disconnected from an external circuit, which makes it difficult to monitor or control the degree of electrical polarization of the surface. Here, we address this knowledge gap by developing general methods for wirelessly monitoring and controlling spontaneous electrical polarization at conductive catalysts dispersed in liquid media. By combining electrochemical and spectroscopic measurements, we demonstrate that proton and electron transfer from solution controllably, spontaneously, and wirelessly polarize Pt surfaces during thermochemical catalysis. We employ liquid-phase ethylene hydrogenation on a Pt/C catalyst as a thermochemical probe reaction and observe that the rate of this nonpolar hydrogenation reaction is significantly influenced by spontaneous electric fields generated by both interfacial proton transfer in water and interfacial electron transfer from organometallic redox buffers in a polar aprotic ortho-difluorobenzene solvent. Across these vastly disparate reaction media, we observe quantitatively similar scaling of ethylene hydrogenation rates with the Pt open-circuit electrochemical potential (E OCP). These results isolate the role of interfacial electrostatic effects from medium-specific chemical interactions and establish that spontaneous interfacial electric fields play a critical role in liquid-phase heterogeneous catalysis. Consequently, E OCP-a generally overlooked parameter in heterogeneous catalysis-warrants consideration in mechanistic studies of thermochemical reactions at solid-liquid interfaces, alongside chemical factors such as temperature, reactant activities, and catalyst structure. Indeed, this work establishes the experimental and conceptual foundation for harnessing electric fields to both elucidate surface chemistry and manipulate preparative thermochemical catalysis.
Collapse
Affiliation(s)
- Thejas
S. Wesley
- Department
of Chemical Engineering and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yuriy Román-Leshkov
- Department
of Chemical Engineering and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yogesh Surendranath
- Department
of Chemical Engineering and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
10
|
Stewart DWG, Scott K, Wain AJ, Rosser TE, Brightman E, Macphee D, Mamlouk M. The Role of Tungsten Oxide in Enhancing the Carbon Monoxide Tolerance of Platinum-Based Hydrogen Oxidation Catalysts. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37079-37091. [PMID: 32692534 DOI: 10.1021/acsami.0c07804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Significant reductions in total cost of ownership can be realized by engineering PEM fuel cells to run on low-purity hydrogen. One of the main drawbacks of low-purity hydrogen fuels is the carbon monoxide fraction, which poisons platinum electrocatalysts and reduces the power output below useful levels. Platinum-tungsten oxide catalyst systems have previously shown high levels of CO tolerance during both ex situ and in situ investigations. In this work, we explore the mechanism of enhanced tolerance using in situ electrochemical attenuated total reflection-infrared (ATR-IR) and Raman spectroscopy methods and investigate, using a mixture of Pt/C and WO3 powders, the role of the WV/WVI redox couple in the oxidation of adsorbed CO.
Collapse
Affiliation(s)
- Douglas W G Stewart
- Enocell Ltd., BioCity Scotland, Motherwell ML1 5UH, U.K
- Chemical Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - Keith Scott
- Chemical Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - Andrew J Wain
- National Physical Laboratory, Hampton Rd, Teddington TW11 0LW, U.K
| | - Timothy E Rosser
- National Physical Laboratory, Hampton Rd, Teddington TW11 0LW, U.K
| | - Edward Brightman
- Enocell Ltd., BioCity Scotland, Motherwell ML1 5UH, U.K
- Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ, U.K
| | - Donald Macphee
- Enocell Ltd., BioCity Scotland, Motherwell ML1 5UH, U.K
- Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, U.K
| | - Mohamed Mamlouk
- Chemical Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| |
Collapse
|
11
|
Cabello G, Davoglio RA, Marco JF, Cuesta A. Probing electronic and atomic ensembles effects on PtAu3 nanoparticles with CO adsorption and electrooxidation. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
12
|
Gunathunge CM, Li J, Li X, Hong JJ, Waegele MM. Revealing the Predominant Surface Facets of Rough Cu Electrodes under Electrochemical Conditions. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05532] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Charuni M. Gunathunge
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Jingyi Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xiang Li
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Julie J. Hong
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Matthias M. Waegele
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| |
Collapse
|
13
|
Wei X, Yin Z, Lyu K, Li Z, Gong J, Wang G, Xiao L, Lu J, Zhuang L. Highly Selective Reduction of CO2 to C2+ Hydrocarbons at Copper/Polyaniline Interfaces. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00049] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xing Wei
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Zhenglei Yin
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P.R. China
| | - Kangjie Lyu
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Zhen Li
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Jun Gong
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Gongwei Wang
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Li Xiao
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Juntao Lu
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
| | - Lin Zhuang
- College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan 430072, P.R. China
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, P.R. China
| |
Collapse
|
14
|
Haselmann GM, Baumgartner B, Wang J, Wieland K, Gupta T, Herzig C, Limbeck A, Lendl B, Eder D. In Situ Pt Photodeposition and Methanol Photooxidation on Pt/TiO2: Pt-Loading-Dependent Photocatalytic Reaction Pathways Studied by Liquid-Phase Infrared Spectroscopy. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05588] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Greta M. Haselmann
- Technische Universität Wien, Institute of Materials Chemistry, Getreidemarkt 9, 1060 Vienna, Austria
| | - Bettina Baumgartner
- Technische Universität Wien, Institute of Chemical Technologies and Analytics, Getreidemarkt 9, 1060 Vienna, Austria
| | - Jia Wang
- Technische Universität Wien, Institute of Materials Chemistry, Getreidemarkt 9, 1060 Vienna, Austria
| | - Karin Wieland
- Technische Universität Wien, Institute of Chemical Technologies and Analytics, Getreidemarkt 9, 1060 Vienna, Austria
| | - Tushar Gupta
- Technische Universität Wien, Institute of Materials Chemistry, Getreidemarkt 9, 1060 Vienna, Austria
| | - Christopher Herzig
- Technische Universität Wien, Institute of Chemical Technologies and Analytics, Getreidemarkt 9, 1060 Vienna, Austria
| | - Andreas Limbeck
- Technische Universität Wien, Institute of Chemical Technologies and Analytics, Getreidemarkt 9, 1060 Vienna, Austria
| | - Bernhard Lendl
- Technische Universität Wien, Institute of Chemical Technologies and Analytics, Getreidemarkt 9, 1060 Vienna, Austria
| | - Dominik Eder
- Technische Universität Wien, Institute of Materials Chemistry, Getreidemarkt 9, 1060 Vienna, Austria
| |
Collapse
|
15
|
Reinsberg PH, Baltruschat H. Potential- and cation-dependent adsorption of acetonitrile on gold investigated via surface enhanced infrared absorption spectroscopy. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
Dimakis N, Salas I, Gonzalez L, Loupe N, Smotkin ES. Electron density topological and adsorbate orbital analyses of water and carbon monoxide co-adsorption on platinum. J Chem Phys 2019; 150:024703. [PMID: 30646698 DOI: 10.1063/1.5046183] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The electron density topology of carbon monoxide (CO) on dry and hydrated platinum is evaluated under the quantum theory of atoms in molecules (QTAIM) and by adsorbate orbital approaches. The impact of water co-adsorbate on the electronic, structural, and vibrational properties of CO on Pt are modelled by periodic density functional theory (DFT). At low CO coverage, increased hydration weakens C-O bonds and strengthens C-Pt bonds, as verified by changes in bond lengths and stretching frequencies. These results are consistent with QTAIM, the 5σ donation-2π* backdonation model, and our extended π-attraction σ-repulsion model (extended π-σ model). This work links changes in the non-zero eigenvalues of the electron density Hessian at QTAIM bond critical points to changes in the π and σ C-O bonds with systematic variation of CO/H2O co-adsorbate scenarios. QTAIM invariably shows bond strengths and lengths as being negatively correlated. For atop CO on hydrated Pt, QTAIM and phenomenological models are consistent with a direct correlation between C-O bond strength and CO coverage. However, DFT modelling in the absence of hydration shows that C-O bond lengths are not negatively correlated to their stretching frequencies, in contrast to the Badger rule: When QTAIM and phenomenological models do not agree, the use of the non-zero eigenvalues of the electron density Hessian as inputs to the phenomenological models, aligns them with QTAIM. The C-O and C-Pt bond strengths of bridge and three-fold bound CO on dry and hydrated platinum are also evaluated by QTAIM and adsorbate orbital analyses.
Collapse
Affiliation(s)
- Nicholas Dimakis
- Department of Physics and Astronomy, University of Texas Rio Grande Valley, 1201 W. University Drive, Edinburg, Texas 78539-2999, USA
| | - Isaiah Salas
- Achieve Early College High School, McAllen, Texas 78501, USA
| | - Luis Gonzalez
- PSJA Thomas Jefferson T-STEM Early College HS, Pharr, Texas 78577, USA
| | - Neili Loupe
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
| | - Eugene S Smotkin
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
| |
Collapse
|
17
|
Farias MJS, Cheuquepán W, Tanaka AA, Feliu JM. Unraveling the Nature of Active Sites in Ethanol Electro-oxidation by Site-Specific Marking of a Pt Catalyst with Isotope-Labeled 13CO. J Phys Chem Lett 2018; 9:1206-1210. [PMID: 29451798 DOI: 10.1021/acs.jpclett.8b00030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This works deals with the identification of preferential site-specific activation at a model Pt surface during a multiproduct reaction. The (110)-type steps of a Pt(332) surface were selectively marked by attaching isotope-labeled 13CO molecules to them, and ethanol oxidation was probed by in situ Foureir transfrom infrared spectroscopy in order to precisely determine the specific sites at which CO2, acetic acid, and acetaldehyde were preferentially formed. The (110) steps were active for splitting the C-C bond, but unexpectedly, we provide evidence that the pathway of CO2 formation was preferentially activated at (111) terraces, rather than at (110) steps. Acetaldehyde was formed at (111) terraces at potentials comparable to those for CO2 formation also at (111) terraces, while the acetic acid formation pathway became active only when the (110) steps were released by the oxidation of adsorbed 13CO, at potentials higher than for the formation of CO2 at (111) terraces of the stepped surface.
Collapse
Affiliation(s)
- Manuel J S Farias
- Departamento de Química , Universidade Federal do Maranhão , Avenida dos Portugueses, 1966, CEP 65080-805 , São Luís - Maranhão , Brazil
| | - William Cheuquepán
- Instituto de Electroquímica , Universidad de Alicante , Ap. 99, E-03080 Alicante , Spain
| | - Auro A Tanaka
- Departamento de Química , Universidade Federal do Maranhão , Avenida dos Portugueses, 1966, CEP 65080-805 , São Luís - Maranhão , Brazil
| | - Juan M Feliu
- Instituto de Electroquímica , Universidad de Alicante , Ap. 99, E-03080 Alicante , Spain
| |
Collapse
|
18
|
McPherson IJ, Ash PA, Jones L, Varambhia A, Jacobs RMJ, Vincent KA. Electrochemical CO Oxidation at Platinum on Carbon Studied through Analysis of Anomalous in Situ IR Spectra. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2017; 121:17176-17187. [PMID: 28845207 PMCID: PMC5563840 DOI: 10.1021/acs.jpcc.7b02166] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/21/2017] [Indexed: 05/29/2023]
Abstract
The oxidation of adsorbed CO is a key reaction in electrocatalysis. It has been studied extensively on both extended model surfaces and on nanoparticles; however, correlation between the two is far from simple. Molecular insight into the reaction is often provided using in situ IR spectroscopy; however, practical challenges mean in situ studies on nanoparticles have yet to provide the same level of detail as those on model surfaces. Here we use a new approach to in situ IR spectroscopy to study the mechanism of CO adlayer oxidation on a commercial carbon-supported Pt catalyst. We observe bipolar IR absorption bands but develop a simple model to enable fitting. Quantitative analysis of band behavior during the oxidation prepeak using the model agrees well with previous analysis based on conventional absorption bands. A second linear CO band is observed during the main oxidation region and is assigned to the distinct contribution of CO on step as opposed to terrace sites. Analysis of the step and terrace CO bands during oxidation shows that oxidation begins on the terraces of the nanoparticles before CO on steps is removed. Further correlation of this behavior with the current shows that step CO is only lost in the first of the two main oxidation peaks.
Collapse
Affiliation(s)
- Ian J. McPherson
- Department
of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K.
| | - Philip A. Ash
- Department
of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K.
| | - Lewys Jones
- Department
of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, U.K.
| | - Aakash Varambhia
- Department
of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, U.K.
| | - Robert M. J. Jacobs
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| | - Kylie A. Vincent
- Department
of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K.
| |
Collapse
|
19
|
Farias MJS, Cheuquepán W, Tanaka AA, Feliu JM. Nonuniform Synergistic Effect of Sn and Ru in Site-Specific Catalytic Activity of Pt at Bimetallic Surfaces toward CO Electro-oxidation. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00257] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuel J. S. Farias
- Departamento
de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805 São Luís, Maranhão, Brazil
| | - William Cheuquepán
- Instituto
de Electroquímica, Universidad de Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Auro A. Tanaka
- Departamento
de Química, Universidade Federal do Maranhão, Avenida dos Portugueses, 1966, CEP 65080-805 São Luís, Maranhão, Brazil
| | - Juan M. Feliu
- Instituto
de Electroquímica, Universidad de Alicante, Ap. 99, E-03080 Alicante, Spain
| |
Collapse
|
20
|
Farias MJS, Busó-Rogero C, Vidal-Iglesias FJ, Solla-Gullón J, Camara GA, Feliu JM. Mobility and Oxidation of Adsorbed CO on Shape-Controlled Pt Nanoparticles in Acidic Medium. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:865-871. [PMID: 28075603 DOI: 10.1021/acs.langmuir.6b03612] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The knowledge about how CO occupies and detaches from specific surface sites on well-structured Pt surfaces provides outstanding information on both dynamics/mobility of COads and oxidation of this molecule under electrochemical conditions. This work reports how the potentiostatic growth of different coverage CO adlayers evolves with time on both cubic and octahedral Pt nanoparticles in acidic medium. Data suggest that during the growth of the CO adlayer, COads molecules slightly shift toward low coordination sites only on octahedral Pt nanoparticles, so that these undercoordinated sites are the first filled on octahedral Pt nanoparticles. Conversely, on cubic Pt nanoparticles, adsorbed CO behaves as an immobile species, and low coordinated sites as well as (100) terraces are apparently filled uniformly and simultaneously. However, once the adlayer is complete, irrespectively of whether the CO is oxidized in a single step or in a sequence of different potential steps, results suggest that COads behaves as an immobile species during its oxidation on both octahedral and cubic Pt nanoparticles.
Collapse
Affiliation(s)
- Manuel J S Farias
- Departamento de Química, Universidade Federal do Maranhão , Avenida dos Portugueses, 1966, CEP 65080-805, São Luís - MA, Brazil
| | - Carlos Busó-Rogero
- Instituto de Electroquímica, Universidad de Alicante , Ap. 99, E-03080, Alicante, Spain
| | | | - José Solla-Gullón
- Instituto de Electroquímica, Universidad de Alicante , Ap. 99, E-03080, Alicante, Spain
| | - Giuseppe A Camara
- Instituto de Química, Universidade Federal de Mato Grosso do Sul , C.P. 549, 79070-900, Campo Grande, Brazil
| | - Juan M Feliu
- Instituto de Electroquímica, Universidad de Alicante , Ap. 99, E-03080, Alicante, Spain
| |
Collapse
|
21
|
Takeguchi T, Kunifuji A, Narischat N, Ito M, Noguchi H, Uosaki K, Mukai SR. Ligand effect of SnO2 on a Pt–Ru catalyst and the relationship between bond strength and CO tolerance. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01523e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pt–Ru/SnO2/C catalysts were prepared by a rapid quenching method.
Collapse
Affiliation(s)
- Tatsuya Takeguchi
- Department of Chemistry and Biological Sciences
- Faculty of Science and Engineering
- Iwate University
- Japan
| | | | - Napan Narischat
- Department of Chemistry and Biological Sciences
- Faculty of Science and Engineering
- Iwate University
- Japan
- Graduate School of Engineering
| | - Mikio Ito
- Department of Chemical Science and Engineering
- National Institute of Technology, Tokyo College
- Hachioji
- Japan
| | - Hidenori Noguchi
- International Center for Materials Nanoarchitectonics (MANA) and Global Research Center for Environment and Energy Based on Nanomaterials Science (GREEN)
- National Institute for Materials Science
- Tsukuba 305-0044
- Japan
| | - Kohei Uosaki
- International Center for Materials Nanoarchitectonics (MANA) and Global Research Center for Environment and Energy Based on Nanomaterials Science (GREEN)
- National Institute for Materials Science
- Tsukuba 305-0044
- Japan
| | - Shin R. Mukai
- Graduate School of Engineering
- Hokkaido University
- Japan
| |
Collapse
|
22
|
Liu HX, Tian N, Ye JY, Lu BA, Ren J, Huangfu ZC, Zhou ZY, Sun SG. A comparative study of CO adsorption on tetrahexahedral Pt nanocrystals and interrelated Pt single crystal electrodes by using cyclic voltammetry and in situ FTIR spectroscopy. Faraday Discuss 2015; 176:409-28. [PMID: 25654491 DOI: 10.1039/c4fd00136b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This study focuses on CO adsorption at tetrahexahedral Pt nanocrystals (THH Pt NCs) by using cyclic voltammetry and in situ FTIR spectroscopy. Since the electrochemically prepared THH Pt NCs in this study are enclosed by {730} facets which could be considered by a subfacet configuration of 2{210} + {310}, we have also studied CO adsorption on the interrelated Pt(310) and Pt(210) single crystal electrodes as a comparison. Cyclic voltammetry results demonstrated that CO adsorbs dominantly on the (100) sites of THH Pt NCs at low CO coverage (θ(CO)≤ 0.135), while on both (100) and (110) sites at higher CO coverage. On ordered Pt(310) and Pt(210), i.e. they were flame annealed and then cooled in H(2) + Ar, CO adsorption also illustrates relative priority on (100) sites at low CO coverage; while at high CO coverage or on oxygen-disordered Pt(310) and Pt(210) when they were cooled in air after flame annealing, the adsorption of CO presents a weak preference on (100) sites of Pt(310) and even no preference at all on (100) sites of Pt(210). In situ FTIR spectroscopic studies illustrated that CO adsorption on THH Pt NCs yields anomalous infrared effects (AIREs), which are depicted by the Fano-like IR feature on a dense distribution (60 μm(-2)) and the enhancement of abnormal IR absorption on a sparse distribution (22 μm(-2)) of THH Pt NCs on glassy carbon substrate. Systematic investigation of CO coverage dependence of IR features revealed that, on THH Pt NCs, the IR band center (ν(COL)) of linearly bonded CO (COL) is rapidly shifted to higher wavenumbers along with the increase of CO coverage to 0.184, yielding a fast linear increase rate with a high slope (dν(COL)/dθ(IR)(CO) = 219 cm(-1)); when θ > 0.184, the increase of ν(COL) with θCO slows down and deviates drastically from linearity. In contrast, the ν(COL) on the ordered Pt(310) electrode maintains a linear increase with θ(IR)(CO) for the whole range of θ(IR)(CO) variation, and gives a much smaller increase rate of slope 74.3 cm(-1). The significant differences in CO adsorption behavior on THH Pt NCs and on interrelated Pt single crystal planes demonstrated clearly the unique properties of nanoparticles enclosed by high-index facets.
Collapse
Affiliation(s)
- Hai-Xia Liu
- State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, XiamenUniversity, Xiamen, 361005, China.
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Oxidation of formic acid and methanol and their potential oscillations under no or little water conditions. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.05.135] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
24
|
Jusys Z, Behm RJ. Adsorption and oxidation of formaldehyde on a polycrystalline Pt film electrode: An in situ IR spectroscopy search for adsorbed reaction intermediates. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:747-59. [PMID: 24991512 PMCID: PMC4077456 DOI: 10.3762/bjnano.5.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 04/30/2014] [Indexed: 05/07/2023]
Abstract
As part of a mechanistic study of the electrooxidation of C1 molecules we have systematically investigated the dissociative adsorption/oxidation of formaldehyde on a polycrystalline Pt film electrode under experimental conditions optimizing the chance for detecting weakly adsorbed reaction intermediates. Employing in situ IR spectroscopy in an attenuated total reflection configuration (ATR-FTIRS) with p-polarized IR radiation to further improve the signal-to-noise ratio, and using low reaction temperatures (3 °C) and deuterium substitution to slow down the reaction kinetics and to stabilize weakly adsorbed reaction intermediates, we could detect an IR absorption band at 1660 cm(-1) characteristic for adsorbed formyl intermediates. This assignment is supported by an isotope shift in wave number. Effects of temperature, potential and deuterium substitution on the formation and disappearance of different adsorbed species (COad, adsorbed formate, adsorbed formyl), are monitored and quantified. Consequences on the mechanism for dissociative adsorption and oxidation of formaldehyde are discussed.
Collapse
Affiliation(s)
- Zenonas Jusys
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| | - R Jürgen Behm
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
| |
Collapse
|
25
|
Reichert R, Schnaidt J, Jusys Z, Behm RJ. The influence of reactive side products on the electrooxidation of methanol – a combined in situ infrared spectroscopy and online mass spectrometry study. Phys Chem Chem Phys 2014; 16:13780-99. [DOI: 10.1039/c4cp01229a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Uddin J, Anderson AB. Trends with coverage and pH in Stark tuning rates for CO on Pt(111) electrodes. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.06.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Gasparotto LH, Ciapina EG, Cantane DA, Gomes JF, Lima FH, Ticianelli EA, Tremiliosi-Filho G. Altering the adsorptive and electronic properties of Pt through poly(vinyl alcohol) adsorption. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.12.127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
28
|
Site Blocking with Gold Adatoms as an Approach to Study Structural Effects in Electrocatalysis. Electrocatalysis (N Y) 2012. [DOI: 10.1007/s12678-012-0104-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
29
|
Balasubramanian S, Lakshmanan B, Hetzke C, Sethuraman V, Weidner J. Quantifying oxidation rates of carbon monoxide on a Pt/C electrode. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.10.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
30
|
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]
|
31
|
|
32
|
Liu SX, Liao LW, Tao Q, Chen YX, Ye S. The kinetics of CO pathway in methanol oxidation at Pt electrodes, a quantitative study by ATR-FTIR spectroscopy. Phys Chem Chem Phys 2011; 13:9725-35. [PMID: 21503326 DOI: 10.1039/c0cp01728k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Methanol (MeOH) oxidation reaction (MOR) at Pt electrodes under potentiostatic conditions has been investigated by electrochemical in situ FTIR spectroscopy (FTIRS) in attenuated-total-reflection configuration under controlled flow conditions in 0.1 M HClO(4) with 2 M MeOH, where the mass transport effects are largely eliminated using a flow cell. Our results reveal that (i) at constant potentials, the methanol dehydrogenation rate decreases while the CO(ad) oxidation rate increases with the accumulation of CO(ad) until the maximum CO(ad) coverage (ca. 0.5 ML i.e., the steady state) is reached; (ii) at fixed CO(ad) coverage, the rates for MeOH decomposition to CO(ad) and CO(ad) oxidation increases with potential from 0.3 to 0.7 V (vs. RHE), with Tafel slopes for MeOH dehydrogenation of ca. 440 ± 30 mV/dec, which is independent of CO(ad) coverage; (iii) the current efficiency of the CO pathway in MOR at 0.6 and 0.7 V is below 20% and it decreases toward higher potentials. The mechanisms as well as the potential induced change in the kinetics of different pathways involved in MOR are briefly discussed.
Collapse
Affiliation(s)
- Shao Xiong Liu
- Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China
| | | | | | | | | |
Collapse
|
33
|
Liao LW, Liu SX, Tao Q, Geng B, Zhang P, Wang CM, Chen YX, Ye S. A method for kinetic study of methanol oxidation at Pt electrodes by electrochemical in situ infrared spectroscopy. J Electroanal Chem (Lausanne) 2011. [DOI: 10.1016/j.jelechem.2010.09.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
34
|
Duan S, Fang PP, Fan FR, Broadwell I, Yang FZ, Wu DY, Ren B, Amatore C, Luo Y, Xu X, Tian ZQ. A density functional theory approach to mushroom-like platinum clusters on palladium-shell over Au core nanoparticles for high electrocatalytic activity. Phys Chem Chem Phys 2011; 13:5441-9. [DOI: 10.1039/c1cp20096h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
35
|
Peng B, Yan YG, Cai WB. Surface-enhanced IR spectroscopy investigation on the electro-oxidation of CO adlayer at a polycrystalline Pt film electrode in Cl−-containing HClO4. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.04.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
36
|
Frelink T, Visscher W, Cox AP, van Veen JAR. The Role of Surface Oxides in the Electrooxidation of Methanol, Formic Acid and CO on Pt, Ru and Codeposited Pt-Ru. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19961000511] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
37
|
Boscheto E, Batista B, Lima R, Varela H. A surface-enhanced infrared absorption spectroscopic (SEIRAS) study of the oscillatory electro-oxidation of methanol on platinum. J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2010.01.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
38
|
Mojet BL, Ebbesen SD, Lefferts L. Light at the interface: the potential of attenuated total reflection infrared spectroscopy for understanding heterogeneous catalysis in water. Chem Soc Rev 2010; 39:4643-55. [DOI: 10.1039/c0cs00014k] [Citation(s) in RCA: 217] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
39
|
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]
|
40
|
|
41
|
Ebbesen SD, Mojet BL, Lefferts L. The influence of water and pH on adsorption and oxidation of CO on Pd/Al2O3—an investigation by attenuated total reflection infrared spectroscopy. Phys Chem Chem Phys 2009; 11:641-9. [DOI: 10.1039/b814605e] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
42
|
Colmati F, Tremiliosi-Filho G, Gonzalez ER, Berná A, Herrero E, Feliu JM. Surface structure effects on the electrochemical oxidation of ethanol on platinum single crystal electrodes. Faraday Discuss 2009; 140:379-97; discussion 417-37. [DOI: 10.1039/b802160k] [Citation(s) in RCA: 149] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
43
|
Fromondi I, Scherson D. Surface dynamics at well-defined single crystal microfacetted Pt(111) electrodes: in situ optical studies. Faraday Discuss 2009; 140:59-68; discussion 93-112. [DOI: 10.1039/b805040f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
44
|
García-Aráez N, Climent V, Feliu JM. Evidence of Water Reorientation on Model Electrocatalytic Surfaces from Nanosecond-Laser-Pulsed Experiments. J Am Chem Soc 2008; 130:3824-33. [DOI: 10.1021/ja0761481] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nuria García-Aráez
- Instituto de Electroquímica, Universidad de Alicante, Ap. 99, E-03080, Alicante, Spain
| | - Víctor Climent
- Instituto de Electroquímica, Universidad de Alicante, Ap. 99, E-03080, Alicante, Spain
| | - Juan M. Feliu
- Instituto de Electroquímica, Universidad de Alicante, Ap. 99, E-03080, Alicante, Spain
| |
Collapse
|
45
|
Iwasita T, Nart FC. In‐Situ Fourier Transform Infrared Spectroscopy: A Tool to Characterize the Metal‐Electrolyte Interface at a Molecular Level. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/9783527616787.ch3] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
46
|
Korzeniewski C. Recent Advances in in‐situ Infrared Spectroscopy and Applications in Single‐Crystal Electrochemistry and Electrocatalysis. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/9783527616817.ch7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
47
|
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]
|
48
|
Curulla Ferré D, Niemantsverdriet J(H. Vibrational Stark tuning rates from periodic DFT calculations: CO/Pt(111). Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2007.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
49
|
Tummala NR, Striolo A. Role of Counterion Condensation in the Self-Assembly of SDS Surfactants at the Water−Graphite Interface. J Phys Chem B 2008; 112:1987-2000. [DOI: 10.1021/jp077678m] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Naga Rajesh Tummala
- The University of Oklahoma School of Chemical Biological and Materials Engineering, Norman, Oklahoma 73019
| | - Alberto Striolo
- The University of Oklahoma School of Chemical Biological and Materials Engineering, Norman, Oklahoma 73019
| |
Collapse
|
50
|
Heinen M, Chen YX, Jusys Z, Behm RJ. Room Temperature COad Desorption/Exchange Kinetics on Pt Electrodes—A Combined In Situ IR and Mass Spectrometry Study. Chemphyschem 2007; 8:2484-9. [DOI: 10.1002/cphc.200700425] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|