51
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Yu Y, Gao Y, Hu K, Blanchard PY, Noël JM, Nareshkumar T, Phani KL, Friedman G, Gogotsi Y, Mirkin MV. Electrochemistry and Electrocatalysis at Single Gold Nanoparticles Attached to Carbon Nanoelectrodes. ChemElectroChem 2014. [DOI: 10.1002/celc.201402312] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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52
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Li YY, Liao HG, Rao L, Jiang YX, Huang R, Zhang BW, He CL, Tian N, Sun SG. Shape Evolution of Platinum Nanocrystals by Electrochemistry. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.04.147] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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53
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Erikson H, Sarapuu A, Tammeveski K, Solla-Gullón J, Feliu JM. Shape-Dependent Electrocatalysis: Oxygen Reduction on Carbon-Supported Gold Nanoparticles. ChemElectroChem 2014. [DOI: 10.1002/celc.201402013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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54
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Bertin E, Garbarino S, Guay D. Formic acid oxidation on Bi covered Pt electrodeposited thin films: influence of the underlying structure. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.04.111] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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55
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Martínez-Rodríguez RA, Vidal-Iglesias FJ, Solla-Gullón J, Cabrera CR, Feliu JM. Synthesis and Electrocatalytic Properties of H2SO4-Induced (100) Pt Nanoparticles Prepared in Water-in-Oil Microemulsion. Chemphyschem 2014; 15:1997-2001. [DOI: 10.1002/cphc.201400056] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Indexed: 11/07/2022]
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56
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Levendorf AM, Sun SG, Tong YJ. In Situ FT-IR Investigation of Methanol and CO Electrooxidation on Cubic and Octahedral/Tetrahedral Pt Nanoparticles Having Residual PVP. Electrocatalysis (N Y) 2014. [DOI: 10.1007/s12678-014-0186-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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57
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Choi S, Jeong H, Choi KH, Song JY, Kim J. Electrodeposition of triangular Pd rod nanostructures and their electrocatalytic and SERS activities. ACS APPLIED MATERIALS & INTERFACES 2014; 6:3002-3007. [PMID: 24443816 DOI: 10.1021/am405601g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report a simple one-step electrodeposition of triangular Pd rod nanostructures on clean Au substrates without additives. Scanning electron microscopy, transmission electron microscopy, and electrochemical techniques were utilized to characterize the structural features of the triangular Pd rod nanostructures. The regulation of the electrodeposition rate by optimizing the electrolyte concentration and applied potential was critical for the anisotropic growth of Pd in the vertical direction. The triangular Pd rod structures exhibited electrocatalytic activities for oxygen reduction and methanol oxidation reactions. These surfaces could be effectively utilized as reproducible surface-enhanced Raman scattering (SERS) active substrates to produce stable SERS signals under electrochemical systems. A simple preparation of well-defined triangular Pd rod structures would allow new opportunities in various areas utilizing Pd-based nanostructured surfaces.
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Affiliation(s)
- Suhee Choi
- Department of Chemistry, Chungbuk National University , Cheongju, Chungbuk 361-763, Korea
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58
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Gómez-Marín AM, Hernández-Ortíz JP. Ion effects at electrode/solid polymer electrolyte membrane interfaces. Phys Chem Chem Phys 2014; 16:1945-56. [PMID: 24336802 DOI: 10.1039/c3cp54173h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The differential capacity and the potential distribution at electrode/solid polymer electrolyte membrane/solution interfaces are calculated through an analytical approach. The model considers coions' and counterions' permeation through the membrane from the solvent phase and the ions' partitioning equilibrium at the SPEM/solution interface. The latter effects are included by incorporating the Donnan equilibrium, the steric hindrance, the solvation energy change when ions move from water to membrane pores and ion electrostatic interactions. It is shown that capacitance maxima in capacitance-potential curves may appear because of the acid-base dissociation process inside the membrane and the change in the ions' total interaction energy with the applied potential. For low dielectric constants inside membrane pores, εp, sharp peaks can be obtained. These peaks broaden, decrease in magnitude and shift to positive potentials once εp is increased. Finally, model predictions are discussed in light of recent experimental data obtained on Nafion® covered Pt(111) electrodes, providing a theoretical framework for the qualitative electroanalysis of these systems.
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Affiliation(s)
- Ana Ma Gómez-Marín
- Departamento de Química y Petróleos, Universidad Nacional de Colombia, sede Medellín, Carrera 80 # 65-223, Bloque M3-050, Medellín, Colombia.
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59
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Zhang Y, Hsieh YC, Volkov V, Su D, An W, Si R, Zhu Y, Liu P, Wang JX, Adzic RR. High Performance Pt Monolayer Catalysts Produced via Core-Catalyzed Coating in Ethanol. ACS Catal 2014. [DOI: 10.1021/cs401091u] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yu Zhang
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Yu-Chi Hsieh
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Vyacheslav Volkov
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Dong Su
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Wei An
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Rui Si
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Yimei Zhu
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ping Liu
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jia X. Wang
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Radoslav R. Adzic
- Chemistry Department, ‡Condensed Matter Physics & Materials Science Department, §Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
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60
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Newton JE, Preece JA, Rees NV, Horswell SL. Nanoparticle catalysts for proton exchange membrane fuel cells: can surfactant effects be beneficial for electrocatalysis? Phys Chem Chem Phys 2014; 16:11435-46. [DOI: 10.1039/c4cp00991f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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61
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Levendorf AM, Chen DJ, Rom CL, Liu Y, Tong YJ. Electrochemical and in situ ATR-SEIRAS investigations of methanol and CO electro-oxidation on PVP-free cubic and octahedral/tetrahedral Pt nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra00815d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The adsorbed PVP enhances further the MOR activity on the O/T but suppresses it on the cubic Pt NPs.
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Affiliation(s)
| | - De-Jun Chen
- Department of Chemistry
- Georgetown University
- Washington DC, USA
| | | | - Yangwei Liu
- Department of Chemistry
- Georgetown University
- Washington DC, USA
| | - YuYe J. Tong
- Department of Chemistry
- Georgetown University
- Washington DC, USA
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62
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Liu XW, Li WW, Yu HQ. Cathodic catalysts in bioelectrochemical systems for energy recovery from wastewater. Chem Soc Rev 2014; 43:7718-45. [DOI: 10.1039/c3cs60130g] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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63
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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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64
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Gómez-Marín AM, Rizo R, Feliu JM. Some reflections on the understanding of the oxygen reduction reaction at Pt(111). BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:956-67. [PMID: 24455454 PMCID: PMC3896285 DOI: 10.3762/bjnano.4.108] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 12/13/2013] [Indexed: 05/04/2023]
Abstract
The oxygen reduction reaction (ORR) is a pivotal process in electrochemistry. Unfortunately, after decades of intensive research, a fundamental knowledge about its reaction mechanism is still lacking. In this paper, a global and critical view on the most important experimental and theoretical results regarding the ORR on Pt(111) and its vicinal surfaces, in both acidic and alkaline media, is taken. Phenomena such as the ORR surface structure sensitivity and the lack of a reduction current at high potentials are discussed in the light of the surface oxidation and disordering processes and the possible relevance of the hydrogen peroxide reduction and oxidation reactions in the ORR mechanism. The necessity to build precise and realistic reaction models, which are deducted from reliable experimental results that need to be carefully taken under strict working conditions is shown. Therefore, progress in the understanding of this important reaction on a molecular level, and the choice of the right approach for the design of the electrocatalysts for fuel-cell cathodes is only possible through a cooperative approach between theory and experiments.
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Affiliation(s)
- Ana M Gómez-Marín
- Instituto de Electroquímica, Universidad de Alicante, Apt. 99, Alicante, E-03080, Spain
| | - Ruben Rizo
- Instituto de Electroquímica, Universidad de Alicante, Apt. 99, Alicante, E-03080, Spain
| | - Juan M Feliu
- Instituto de Electroquímica, Universidad de Alicante, Apt. 99, Alicante, E-03080, Spain
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65
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Pinto OA, López de Mishima B, Dávila M, Ramirez-Pastor AJ, Leiva EPM, Oviedo OA. Computer simulation and detailed mean-field approximation applied to adsorption on nanoparticles. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 88:062407. [PMID: 24483461 DOI: 10.1103/physreve.88.062407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Indexed: 06/03/2023]
Abstract
Adsorption thermodynamics of interacting particles adsorbed on icosahedral and truncated octahedral nanoparticles was studied by a detailed mean-field approximation and Monte Carlo simulations. The nanoparticle is tackled as a multivariate surface, where different types of adsorption sites occur according to coordination with nearest neighbors. In addition, lateral couplings between the adsorbed particles are considered. The analysis covers a wide range of interactions, extending from physical to strong chemical bonds, and different sizes and shapes of nanoparticles.
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Affiliation(s)
- O A Pinto
- Centro de Investigaciones y Transferencia de Santiago del Estero (CITSE), Universidad Nacional de Santiago de Estero-CONICET, Ruta Nacional 9, Km 1125, Villa el Zanjón, 4206, Santiago del Estero, Argentina
| | - B López de Mishima
- Centro de Investigaciones y Transferencia de Santiago del Estero (CITSE), Universidad Nacional de Santiago de Estero-CONICET, Ruta Nacional 9, Km 1125, Villa el Zanjón, 4206, Santiago del Estero, Argentina
| | - M Dávila
- Departamento de Física, Instituto de Física Aplicada, Universidad Nacional de San Luis-CONICET, Chacabuco 917, D5700BWS San Luis, Argentina
| | - A J Ramirez-Pastor
- Departamento de Física, Instituto de Física Aplicada, Universidad Nacional de San Luis-CONICET, Chacabuco 917, D5700BWS San Luis, Argentina
| | - E P M Leiva
- Instituto de Investigaciones de Fisicoquímica de Córdoba (INFIQC) CONICET, Departamento de Matemática y Física de la Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
| | - O A Oviedo
- Instituto de Investigaciones de Fisicoquímica de Córdoba (INFIQC) CONICET, Departamento de Matemática y Física de la Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
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66
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Sahu SC, Samantara AK, Satpati B, Bhattacharjee S, Jena BK. A facile approach for in situ synthesis of graphene-branched-Pt hybrid nanostructures with excellent electrochemical performance. NANOSCALE 2013; 5:11265-11274. [PMID: 24088741 DOI: 10.1039/c3nr03372d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A facile and green approach for the synthesis of highly electroactive branched Pt nanostructures well dispersed on graphene has been developed by in situ reduction of graphene oxides and Pt(iv) ions in an aqueous medium. The as-synthesized branched Pt and graphene hybrid nanomaterials (GR-BPtNs) were thoroughly characterized using Transmission Electron Microscope (TEM), UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and Raman spectroscopy. This report clearly exploits the decisive role of the graphene support, the pH of the solution and the stabiliser on shaping the branched morphology of the Pt nanostructures well dispersed on graphene. Cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy (EIS) measurements were employed to investigate the electrocatalytic performance and durability of GR-BPtNs towards methanol oxidation and oxygen reduction. The results reveal that the synergetic effect of the graphene support and the branched morphology triggers electrocatalytic performance and robust tolerance to surface poisoning of GR-BPtNs.
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Affiliation(s)
- Subash Chandra Sahu
- Colloids & Materials Chemistry, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India.
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67
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Zaera F. Shape-controlled nanostructures in heterogeneous catalysis. CHEMSUSCHEM 2013; 6:1797-1820. [PMID: 24014476 DOI: 10.1002/cssc.201300398] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Indexed: 06/02/2023]
Abstract
Nanotechnologies have provided new methods for the preparation of nanomaterials with well-defined sizes and shapes, and many of those procedures have been recently implemented for applications in heterogeneous catalysis. The control of nanoparticle shape in particular offers the promise of a better definition of catalytic activity and selectivity through the optimization of the structure of the catalytic active site. This extension of new nanoparticle synthetic procedures to catalysis is in its early stages, but has shown some promising leads already. Here, we survey the major issues associated with this nanotechnology-catalysis synergy. First, we discuss new possibilities associated with distinguishing between the effects originating from nanoparticle size versus those originating from nanoparticle shape. Next, we survey the information available to date on the use of well-shaped metal and non-metal nanoparticles as active phases to control the surface atom ensembles that define the catalytic site in different catalytic applications. We follow with a brief review of the use of well-defined porous materials for the control of the shape of the space around that catalytic site. A specific example is provided to illustrate how new selective catalysts based on shape-defined nanoparticles can be designed from first principles by using fundamental mechanistic information on the reaction of interest obtained from surface-science experiments and quantum-mechanics calculations. Finally, we conclude with some thoughts on the state of the field in terms of the advances already made, the future potentials, and the possible limitations to be overcome.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry, University of California, Riverside, CA 92521 (USA).
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68
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Gómez-Marín AM, Feliu JM. New insights into the oxygen reduction reaction mechanism on Pt(111): a detailed electrochemical study. CHEMSUSCHEM 2013; 6:1091-100. [PMID: 23640868 DOI: 10.1002/cssc.201200847] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 02/05/2013] [Indexed: 05/15/2023]
Abstract
The oxygen reduction reaction (ORR) is undoubtedly the most important fuel-cell cathodic reaction. In this work, a detailed electrochemical analysis of the ORR on Pt(111) in nonadsorbing electrolytes was performed, which included the high-potential region Eup =1.15 V while ensuring the electrode surface structure stability. Our results suggest that the reduction of a soluble intermediate species formed during the ORR is the rate-determining step in the whole reaction mechanism. This species does not undergo any other electrochemical reaction at E>0.9 V and may accumulate close to the electrode surface. Together with dissolved O₂, this intermediate may modify the oxide-growth dynamics on Pt(111). Hence, both species interact with the electrode surface through complex catalytic networks. Under certain experimental conditions, oxygenated species from the oxidation of Pt(111) may enhance the overall ORR current. These results propose an alternative to explain the current state of the art for this fundamental process.
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Affiliation(s)
- Ana M Gómez-Marín
- University Institute for Electrochemistry, University of Alicante, Apt. 99, 03080 Alicante, Spain.
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69
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Wang Y, Ward KR, Laborda E, Salter C, Crossley A, Jacobs RMJ, Compton RG. A joint experimental and computational search for authentic nano-electrocatalytic effects: electrooxidation of nitrite and L-ascorbate on gold nanoparticle-modified glassy carbon electrodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:478-86. [PMID: 23124890 DOI: 10.1002/smll.201201670] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Indexed: 05/24/2023]
Abstract
The investigation of electrocatalytic nanoeffects is tackled via joint electrochemical measurements and computational simulations. The cyclic voltammetry of electrodes modified with metal nanoparticles is modeled considering the kinetics of the electrochemical process on the bulk materials of the different regions of the electrode, that is, the substrate (glassy carbon) and the nanoparticles (gold). Comparison of experimental and theoretical results enables the detection of changes in the electrode kinetics at the nanoscale due to structural and/or electronic effects. This approach is applied to the experimental assessment of electrocatalytic effects by gold nanoparticles (Au NPs) in the electrooxidation of nitrite and L-ascorbate. Glassy carbon electrode is modified with Au NPs via seed-mediated growth method. Divergence between the kinetics of these processes on gold macroelectrodes and gold nanoparticles is examined. Whereas claimed catalytic effects are not observed in the electrooxidation of nitrite, electrocatalytic nanoeffects are verified in the case of L-ascorbate. This is probably due to that the electron transfer process follows an adsorptive mechanism. The combination of simulation with experiments is commended as a general strategy of authentification, or not, of nanoelectrocatalytic effects.
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Affiliation(s)
- Ying Wang
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, Oxford, UK
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70
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Hosseini H, Ahmar H, Dehghani A, Bagheri A, Fakhari AR, Amini MM. Au-SH-SiO2 nanoparticles supported on metal-organic framework (Au-SH-SiO2@Cu-MOF) as a sensor for electrocatalytic oxidation and determination of hydrazine. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.10.064] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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71
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Plowman BJ, Najdovski I, Pearson A, O'Mullane AP. Decoration of active sites to create bimetallic surfaces and its implication for electrochemical processes. Faraday Discuss 2013; 164:199-218. [DOI: 10.1039/c3fd00015j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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72
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Tian N, Xiao J, Zhou ZY, Liu HX, Deng YJ, Huang L, Xu BB, Sun SG. Pt-group bimetallic nanocrystals with high-index facets as high performance electrocatalysts. Faraday Discuss 2013; 162:77-89. [DOI: 10.1039/c3fd20146e] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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73
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Kim S, Kim M, Kim T, Baik H, Lee K. Evolution of space-efficient and facet-specific ZnO 3-D nanostructures and their application in photocatalysis. CrystEngComm 2013. [DOI: 10.1039/c2ce26557e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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74
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Nai J, Chen Z, Li H, Li F, Bai Y, Li L, Guo L. Structure-Dependent Electrocatalysis of Ni(OH)2Hourglass-like Nanostructures TowardsL-Histidine. Chemistry 2012; 19:501-8. [DOI: 10.1002/chem.201203009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Indexed: 11/09/2022]
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75
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Meher SK, Rao GR. Polymer-Assisted Hydrothermal Synthesis of Highly Reducible Shuttle-Shaped CeO2: Microstructural Effect on Promoting Pt/C for Methanol Electrooxidation. ACS Catal 2012. [DOI: 10.1021/cs300473e] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Sumanta Kumar Meher
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - G. Ranga Rao
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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76
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Vidal-Iglesias FJ, López-Cudero A, Solla-Gullón J, Feliu JM. Towards More Active and Stable Electrocatalysts for Formic Acid Electrooxidation: Antimony-Decorated Octahedral Platinum Nanoparticles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207517] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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77
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Vidal-Iglesias FJ, López-Cudero A, Solla-Gullón J, Feliu JM. Towards More Active and Stable Electrocatalysts for Formic Acid Electrooxidation: Antimony-Decorated Octahedral Platinum Nanoparticles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201207517] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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78
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Najdovski I, Selvakannan PR, Bhargava SK, O'Mullane AP. Formation of nanostructured porous Cu-Au surfaces: the influence of cationic sites on (electro)-catalysis. NANOSCALE 2012; 4:6298-6306. [PMID: 22842864 DOI: 10.1039/c2nr31409f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The fabrication of nanostructured bimetallic materials through electrochemical routes offers the ability to control the composition and shape of the final material that can then be effectively applied as (electro)-catalysts. In this work a clean and transitory hydrogen bubble templating method is employed to generate porous Cu-Au materials with a highly anisotropic nanostructured interior. Significantly, the co-electrodeposition of copper and gold promotes the formation of a mixed bimetallic oxide surface which does not occur at the individually electrodeposited materials. Interestingly, the surface is dominated by Au(I) oxide species incorporated within a Cu(2)O matrix which is extremely effective for the industrially important (electro)-catalytic reduction of 4-nitrophenol. It is proposed that an aurophilic type of interaction takes place between both oxidized gold and copper species which stabilizes the surface against further oxidation and facilitates the binding of 4-nitrophenol to the surface and increases the rate of reaction. An added benefit is that very low gold loadings are required typically less than 2 wt% for a significant enhancement in performance to be observed. Therefore the ability to create a partially oxidized Cu-Au surface through a facile electrochemical route that uses a clean template consisting of only hydrogen bubbles should be of benefit for many more important reactions.
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Affiliation(s)
- Ilija Najdovski
- School of Applied Sciences, RMIT University, GPO Box 2476V, Melbourne, VIC 3001, Australia
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79
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Cao M, Wu D, Gao S, Cao R. Platinum Nanoparticles Stabilized by Cucurbit[6]uril with Enhanced Catalytic Activity and Excellent Poisoning Tolerance for Methanol Electrooxidation. Chemistry 2012; 18:12978-85. [DOI: 10.1002/chem.201201817] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Indexed: 11/09/2022]
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80
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Bertin E, Roy C, Garbarino S, Guay D, Solla-Gullón J, Vidal-Iglesias F, Feliu J. Effect of the nature of (100) surface sites on the electroactivity of macroscopic Pt electrodes for the electrooxidation of ammonia. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2012.06.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Viswanathan V, Hansen HA, Rossmeisl J, Nørskov JK. Universality in Oxygen Reduction Electrocatalysis on Metal Surfaces. ACS Catal 2012. [DOI: 10.1021/cs300227s] [Citation(s) in RCA: 376] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Jan Rossmeisl
- Center for Atomic-scale Materials
Design, Department of Physics, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | - Jens K. Nørskov
- SUNCAT, SLAC National Accelerator Laboratory, Menlo Park, California 94025-7015,
United States
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Electrochemical Characterization of Shape-Controlled Pt Nanoparticles in Different Supporting Electrolytes. ACS Catal 2012. [DOI: 10.1021/cs200681x] [Citation(s) in RCA: 203] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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83
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Vidal-Iglesias FJ, López-Cudero A, Solla-Gullón J, Aldaz A, Feliu JM. Pd-Modified Shape-Controlled Pt Nanoparticles Towards Formic Acid Electrooxidation. Electrocatalysis (N Y) 2012. [DOI: 10.1007/s12678-012-0094-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Monzó J, Koper MTM, Rodriguez P. Removing Polyvinylpyrrolidone from Catalytic Pt Nanoparticles without Modification of Superficial Order. Chemphyschem 2012; 13:709-15. [DOI: 10.1002/cphc.201100894] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Indexed: 12/11/2022]
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85
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Zhang HX, Wang H, Re YS, Cai WB. Palladium nanocrystals bound by {110} or {100} facets: from one pot synthesis to electrochemistry. Chem Commun (Camb) 2012; 48:8362-4. [DOI: 10.1039/c2cc33941b] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kim M, Phan VN, Lee K. Exploiting nanoparticles as precursors for novel nanostructure designs and properties. CrystEngComm 2012. [DOI: 10.1039/c2ce25815c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Liu HX, Tian N, Brandon MP, Pei J, Huangfu ZC, Zhan C, Zhou ZY, Hardacre C, Lin WF, Sun SG. Enhancing the activity and tuning the mechanism of formic acid oxidation at tetrahexahedral Pt nanocrystals by Au decoration. Phys Chem Chem Phys 2012; 14:16415-23. [DOI: 10.1039/c2cp42930f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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