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Huang K, Crooks RM. Enhanced electrocatalytic activity of Cu-modified, high-index single Pt NPs for formic acid oxidation. Chem Sci 2022; 13:12479-12490. [PMID: 36349269 PMCID: PMC9628932 DOI: 10.1039/d2sc03433f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 10/10/2022] [Indexed: 11/28/2022] Open
Abstract
A key goal of nanoparticle-based catalysis research is to correlate the structure of nanoparticles (NPs) to their catalytic function. The most common approach for achieving this goal is to synthesize ensembles of NPs, characterize the ensemble, and then evaluate its catalytic properties. This approach is effective, but it excludes the certainty of structural heterogeneity in the NP ensemble. One means of addressing this shortcoming is to carry out analyses on individual NPs. This approach makes it possible to establish direct correlations between structures of single NPs and, in the case reported here, their electrocatalytic properties. Accordingly, we report on enhanced electrocatalytic formic acid oxidation (FAO) activity using individual Cu-modified, high-indexed Pt NPs. The results show that the Cu-modified Pt NPs exhibit significantly higher currents for FAO than the Pt-only analogs. The increased activity is enabled by the Cu submonolayer on the highly stepped Pt surface, which enhances the direct FAO pathway but not the indirect pathway which proceeds via surface-absorbed CO*. Single-crystal Pt nanoparticles with a diameter of ∼200 nm were electrosynthesized, covered with a single monolayer of Cu, and then fully characterized. The resulting materials exhibit excellent electrocatalytic properties for formic acid oxidation.![]()
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Affiliation(s)
- Ke Huang
- Department of Chemistry, Texas Materials Institute, The University of Texas at Austin, 100 E. 24th St., Stop A1590, Austin, Texas, 78712, USA
| | - Richard M. Crooks
- Department of Chemistry, Texas Materials Institute, The University of Texas at Austin, 100 E. 24th St., Stop A1590, Austin, Texas, 78712, USA
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Molodkina EB, Ehrenburg MR, Vysotskii VV. Effect of anions on electrodeposition of structured platinum nanocrystallites. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Devivaraprasad R, Nalajala N, Bera B, Neergat M. Electrocatalysis of Oxygen Reduction Reaction on Shape-Controlled Pt and Pd Nanoparticles-Importance of Surface Cleanliness and Reconstruction. Front Chem 2019; 7:648. [PMID: 31637231 PMCID: PMC6787902 DOI: 10.3389/fchem.2019.00648] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 09/10/2019] [Indexed: 01/04/2023] Open
Abstract
Shape-controlled precious metal nanoparticles have attracted significant research interest in the recent past due to their fundamental and scientific importance. Because of their crystallographic-orientation-dependent properties, these metal nanoparticles have tremendous implications in electrocatalysis. This review aims to discuss the strategies for synthesis of shape-controlled platinum (Pt) and palladium (Pd) nanoparticles and procedures for the surfactant removal, without compromising their surface structural integrity. In particular, the electrocatalysis of oxygen reduction reaction (ORR) on shape-controlled nanoparticles (Pt and Pd) is discussed and the results are analyzed in the context of that reported with single crystal electrodes. Accepted theories on the stability of precious metal nanoparticle surfaces under electrochemical conditions are revisited. Dissolution, reconstruction, and comprehensive views on the factors that contribute to the loss of electrochemically active surface area (ESA) of nanoparticles leading to an inevitable decrease in ORR activity are presented. The contribution of adsorbed electrolyte anions, in-situ generated adsorbates and contaminants toward the ESA reduction are also discussed. Methods for the revival of activity of surfaces contaminated with adsorbed impurities without perturbing the surface structure and its implications to electrocatalysis are reviewed.
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Affiliation(s)
- Ruttala Devivaraprasad
- Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Naresh Nalajala
- National Chemical Laboratory, Catalysis Division, Pune, India
| | - Bapi Bera
- Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Manoj Neergat
- Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai, India
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Regularities of nitrate electroreduction on Pt(S)[n(100)x(110)] stepped platinum single crystals modified by copper adatoms. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Ehrenburg MR, Danilov AI, Botryakova IG, Molodkina EB, Rudnev AV. Electroreduction of nitrate anions on cubic and polyoriented platinum nanoparticles modified by copper adatoms. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.08.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Sundararaman R, Goddard WA, Arias TA. Grand canonical electronic density-functional theory: Algorithms and applications to electrochemistry. J Chem Phys 2017; 146:114104. [DOI: 10.1063/1.4978411] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Ravishankar Sundararaman
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
- Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, USA
| | - William A. Goddard
- Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, California 91125, USA
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, USA
| | - Tomas A. Arias
- Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA
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Rodriguez P, García-Aráez N, Herrero E, Feliu J. New insight on the behavior of the irreversible adsorption and underpotential deposition of thallium on platinum (111) and vicinal surfaces in acid electrolytes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Hepel M, Dallas J. Multifunctional Polypeptide EQCN Sensors: Probing the Cysteamine-Glutathione Film Permeability with Hg(II) Ions. SENSORS 2008; 8:7224-7240. [PMID: 27873925 PMCID: PMC3787441 DOI: 10.3390/s8117224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 11/10/2008] [Accepted: 11/13/2008] [Indexed: 11/16/2022]
Abstract
Multifunctional films are the basis of biosensors and play an important role in the emerging field of nanobioelectronics. In this work, films of a tripeptide glutathione (GSH) immobilized on a self-assembled monolayer of cysteamine (CA-SAM) on a quartz crystal Au piezosensor have been synthesized and characterized using electrochemical quartz crystal nanogravimetry (EQCN) with a Hg(II) ion probe. It has been found that in contrast to previously studied Au/GSH films, the Au/CA-GSH films strongly hinder the formation of Hg⁰ with bulk properties while still allowing for relatively easy permeation by Hg(II) ions. This results in complete disappearance of the sharp Hg⁰ electrodissolution peak which is observed on bare Au and Au/GSH piezosensors. The multiple-peak anodic behavior of Au/CA and bare Au is replaced by a single high-field anodic peak of mercury reoxidation in the case of Au/CA-GSH sensors. The mass-to-charge plots indicate predominant ingress/egress of Hg(II) to/from the film. The strong hindrance of CA-SAM to bulk-Hg⁰ formation is attributed to film-stabilizing formation of surface (CA)₂Hg2+ complexes with conformation evaluated by ab initio quantum mechanical calculations of electronic structure using Hartree-Fock methods. The associates CA-GSH provide an additional functionality of the side sulfhydryl group which is free for interactions, e.g. with heavy metals. It is proposed that in the film, the CA-GSH molecules can assume open (extended) conformation or bent hydrogen-bonded conformation with up to four possible internal hydrogen bonds.
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Affiliation(s)
- Maria Hepel
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA.
- Department of Chemistry, State University of New York at Buffalo, Buffalo, NY 14260, USA.
| | - Julia Dallas
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
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9
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Interactions and reactivity of Hg(II) on glutathione modified gold electrode studied by EQCN technique. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Danilov AI, Nazmutdinov RR, Zinkicheva TT, Molodkina EB, Rudnev AV, Polukarov YM, Feliu JM. Mechanism of copper underpotential deposition at Pt(hkl)-electrodes: Quantum-chemical modelling. RUSS J ELECTROCHEM+ 2008. [DOI: 10.1134/s1023193508060104] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Rudnev A, Molodkina E, Danilov A, Polukarov Y, Feliu J. Kinetics of copper UPD on stepped platinum single crystals in the presence of acetonitrile. Electrochem commun 2008. [DOI: 10.1016/j.elecom.2008.01.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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12
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Surface metal modifiers for methanol electrooxidation on platinum; silver and mercury. J Solid State Electrochem 2007. [DOI: 10.1007/s10008-007-0289-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Danilov A, Molodkina E, Rudnev A, Polukarov YM, Feliu J. Kinetics of copper deposition on Pt(111) and Au(111) electrodes in solutions of different acidities. Electrochim Acta 2005. [DOI: 10.1016/j.electacta.2005.02.078] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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The influence of counter anions on the underpotential deposition of mercury(II) on Au(111): temperature-dependent studies. J Electroanal Chem (Lausanne) 2004. [DOI: 10.1016/j.jelechem.2004.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Affiliation(s)
- O M Magnussen
- Abteilung Oberflächenchemie und Katalyse, Universität Ulm, 89069 Ulm, Germany
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Herrero E, Buller LJ, Abruña HD. Underpotential deposition at single crystal surfaces of Au, Pt, Ag and other materials. Chem Rev 2001; 101:1897-930. [PMID: 11710235 DOI: 10.1021/cr9600363] [Citation(s) in RCA: 472] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E Herrero
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-130, USA
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Effect of adsorption of anions on the kinetics of the copper adatom layer formation at polycrystalline platinum. RUSS J ELECTROCHEM+ 2000. [DOI: 10.1007/bf02757511] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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