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Voci S, Dick JE. An electrochemical perspective on the interfacial width between two immiscible liquid phases. CURRENT OPINION IN ELECTROCHEMISTRY 2023; 39:101244. [PMID: 37538354 PMCID: PMC10399975 DOI: 10.1016/j.coelec.2023.101244] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Molecular dynamics simulations and vibrational sum-frequency spectroscopy are historically the main techniques applied to the description of the molecular structure and dynamics of the immiscible liquid/liquid interface. A molecular sharpness is estimated for oil/water interfaces, with an interfacial width that extends from hundreds of Å to 1 nm. However, electrochemical studies have elucidated a deeper liquid/liquid interface on the order of several micrometers. The breaking down of single-entity electrochemistry to simpler systems and the combination of high-resolution microscopies is confirming a larger extension of the interface. What can be the role of the electrochemist in clarifying this fundamental question? We try to give a suggestion at the end of a brief historical overview of the liquid/liquid interface studies.
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Khan MD, Warczak M, Shombe GB, Revaprasadu N, Opallo M. Molecular Precursor Routes for Ag-Based Metallic, Intermetallic, and Metal Sulfide Nanoparticles: Their Comparative ORR Activity Trend at Solid|Liquid and Liquid|Liquid Interfaces. Inorg Chem 2023; 62:8379-8388. [PMID: 37191662 DOI: 10.1021/acs.inorgchem.3c00978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The electrochemical conversion of oxygen to water is a crucial process required for renewable energy production, whereas its first two-electron step produces a versatile chemical and oxidant─hydrogen peroxide. Improving performance and widening the limited selection of the potential catalysts for this reaction is a step toward the implementation of clean-energy technologies. As silver is known as one of the most effective catalysts of oxygen reduction reaction (ORR), we have designed a suitable molecular precursor pathway for the selective synthesis of metallic (Ag), intermetallic (Ag3Sb), and binary or ternary metal sulfide (Ag2S and AgSbS2) nanomaterials by judicious control of reaction conditions. The decomposition of xanthate precursors under different reaction conditions in colloidal synthesis indicates that carbon-sulfur bond cleavage yields the respective metal sulfide nanomaterials. This is not the case in the presence of trioctylphosphine when the metal-sulfur bond is broken. The synthesized nanomaterials were applied as catalysts of oxygen reduction at the liquid-liquid and solid-liquid interfaces. Ag exhibits the best performance for electrochemical oxygen reduction, whereas the electrocatalytic performance of Ag and Ag3Sb is comparable for peroxide reduction in an alkaline medium. Scanning electrochemical microscopy (SECM) analysis indicates that a flexible 2-electron to 4-electron ORR pathway has been achieved by transforming metallic Ag into intermetallic Ag3Sb.
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Affiliation(s)
- Malik Dilshad Khan
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
- Department of Chemistry, University of Zululand, Private bag X1001, Kwa-Dlangezwa 3880, South Africa
| | - Magdalena Warczak
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
- Department of Food Analysis and Environmental Protection, Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, Bydgoszcz 85-326, Poland
| | - Ginena Bildard Shombe
- Chemistry Department, University of Dar-es-Salaam, P.O. Box 35061, Dar-es-Salaam 63728, Tanzania
- Department of Chemistry, University of Zululand, Private bag X1001, Kwa-Dlangezwa 3880, South Africa
| | - Neerish Revaprasadu
- Department of Chemistry, University of Zululand, Private bag X1001, Kwa-Dlangezwa 3880, South Africa
| | - Marcin Opallo
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland
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Gamero‐Quijano A, Manzanares JA, Ghazvini SMBH, Low PJ, Scanlon MD. Potential-Modulated Ion Distributions in the Back-to-Back Electrical Double Layers at a Polarised Liquid|Liquid Interface Regulate the Kinetics of Interfacial Electron Transfer. ChemElectroChem 2023; 10:e202201042. [PMID: 37082100 PMCID: PMC10108062 DOI: 10.1002/celc.202201042] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/09/2022] [Indexed: 12/29/2022]
Abstract
Biphasic interfacial electron transfer (IET) reactions at polarisable liquid|liquid (L|L) interfaces underpin new approaches to electrosynthesis, redox electrocatalysis, bioelectrochemistry and artificial photosynthesis. Herein, using cyclic and alternating current voltammetry, we demonstrate that under certain experimental conditions, the biphasic 2-electron O2 reduction reaction can proceed by single-step IET between a reductant in the organic phase, decamethylferrocene, and interfacial protons in the presence of O2. Using this biphasic system, we demonstrate that the applied interfacial Galvani potential differenceΔ o w φ provides no direct driving force to realise a thermodynamically uphill biphasic IET reaction in the mixed solvent region. We show that the onset potential for a biphasic single-step IET reaction does not correlate with the thermodynamically predicted standard Galvani IET potential and is instead closely correlated with the potential of zero charge at a polarised L|L interface. We outline that the appliedΔ o w φ required to modulate the interfacial ion distributions, and thus kinetics of IET, must be optimised to ensure that the aqueous and organic redox species are present in substantial concentrations at the L|L interface simultaneously in order to react.
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Affiliation(s)
- Alonso Gamero‐Quijano
- Department of Physical ChemistryUniversity of Alicante (UA)E-03080AlicanteSpain
- The Bernal Institute and Department of Chemical SciencesSchool of Natural SciencesUniversity of Limerick (UL)LimerickV94 T9PXIreland
| | - José A. Manzanares
- Department of ThermodynamicsFaculty of PhysicsUniversity of Valenciac/Dr. Moliner, 50BurjasotE-46100ValenciaSpain
| | - Seyed M. B. H. Ghazvini
- School of Molecular SciencesUniversity of Western Australia (UWA)35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Paul J. Low
- School of Molecular SciencesUniversity of Western Australia (UWA)35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Micheál D. Scanlon
- The Bernal Institute and Department of Chemical SciencesSchool of Natural SciencesUniversity of Limerick (UL)LimerickV94 T9PXIreland
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Jiang B, Gu W, Jiang W, Lv M, Niu B, Wu X, Wang W, Wang H. Directly Imaging Dynamic Electronic Coupling during Electrochemical Oxidation of Single Silver Nanoparticles. Angew Chem Int Ed Engl 2022; 61:e202209964. [DOI: 10.1002/anie.202209964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Bo Jiang
- State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
| | - Wenjie Gu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210023 China
| | - Wenxuan Jiang
- State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
| | - Mengqi Lv
- State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
| | - Ben Niu
- State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
| | - Xue‐Jun Wu
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
| | - Wei Wang
- State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
| | - Hui Wang
- State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 210023 China
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5
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Zhang J, Huang L, Fang T, Du F, Xiang Z, Zhang J, Chen R, Peljo P, Ouyang G, Deng H. Discrete Events of Ionosomes at the Water/Toluene Micro‐Interface. ChemElectroChem 2022. [DOI: 10.1002/celc.202200624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jingyan Zhang
- Sun Yat-Sen University Chemical Engineering and Technology CHINA
| | - Linhan Huang
- Sun Yat-Sen University Chemical Engineering and Technology CHINA
| | - Taoxiong Fang
- Sun Yat-Sen University School of Chemical Engineering and Technology CHINA
| | - Feng Du
- Sun Yat-Sen University Chemical Engineering and Technology CHINA
| | - Zhipeng Xiang
- South China University of Technology Chemistry and Chemical Engineering CHINA
| | - Jingcheng Zhang
- Sun Yat-Sen University Chemical Engineering and Technology CHINA
| | - Ran Chen
- Southeast University Chemistry and Chemical Engineering CHINA
| | - Pekka Peljo
- University of Turku: Turun Yliopisto Mechanical and Materials Engineering FINLAND
| | - Gangfeng Ouyang
- Sun Yat-Sen University Chemical Engineering and Technology CHINA
| | - Haiqiang Deng
- Sun Yat-Sen University School of Chemical Engineering and Technology Room 203, No. 7 Building, Haibin Honglou Road 519082 Zhuhai CHINA
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Opallo MW, Dusilo K, Warczak M, Kalisz J. Hydrogen Evolution, Oxygen Evolution and Oxygen Reduction at Polarizable Liquid|Liquid Interfaces. ChemElectroChem 2022. [DOI: 10.1002/celc.202200513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marcin Wojciech Opallo
- Institute of Physical Chemistry, Polish Academy of Sciences Department of Electrode Processes Kasprzaka 44/52 01-224 Warszawa POLAND
| | - Katarzyna Dusilo
- Institute of Physical Chemistry Polish Academy of Sciences Library: Instytut Chemii Fizycznej Polskiej Akademii Nauk Biblioteka Electrode Processes POLAND
| | - Magdalena Warczak
- Institute of Physical Chemistry Polish Academy of Sciences Library: Instytut Chemii Fizycznej Polskiej Akademii Nauk Biblioteka Electrode Processes POLAND
| | - Justyna Kalisz
- University of Warsaw: Uniwersytet Warszawski Chemistry POLAND
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7
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Jiang B, Gu W, Jiang W, Lv M, Niu B, Wu XJ, Wang W, Wang H. Directly Imaging Dynamic Electronic Coupling during Electrochemical Oxidation of Single Silver Nanoparticles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bo Jiang
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Wenjie Gu
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Wenxuan Jiang
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Mengqi Lv
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Ben Niu
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Xue-Jun Wu
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Wei Wang
- Nanjing University School of Chemistry and Chemical Engineering CHINA
| | - Hui Wang
- Nanjing University Nanjing Xianlin road No. 163 CHINA
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Ahmadinasab N, Stockmann TJ. Single entity electrochemical detection of as‐prepared metallic and dielectric nanoparticle stochastic impacts in a phosphonium ionic liquid. ChemElectroChem 2022. [DOI: 10.1002/celc.202200162] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nazanin Ahmadinasab
- Memorial University of Newfoundland Chemistry 1 Arctic Ave A1C 5S7 St. John's CANADA
| | - Talia Jane Stockmann
- Memorial University of Newfoundland Chemistry 1 Arctic Ave A1C 5S7 St. John's CANADA
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Jiang Q, Reader HE, Stockmann TJ. Electrochemical Characterization of Fe(II) Complexation Reactions at an Electrified Micro Liquid‐Liquid Interface. ChemElectroChem 2021. [DOI: 10.1002/celc.202100127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qi Jiang
- Department of Chemistry Memorial University of Newfoundland 283 Prince Philip Dr. St. John's NL, A1B 3X7
| | - Heather E. Reader
- Department of Chemistry Memorial University of Newfoundland 283 Prince Philip Dr. St. John's NL, A1B 3X7
| | - Talia Jane Stockmann
- Department of Chemistry Memorial University of Newfoundland 283 Prince Philip Dr. St. John's NL, A1B 3X7
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Zhang Y, Feng T, Xu M, Tang Q, Zhang M. Observing Single Hollow Porous Carbon Catalyst Collisions for Oxygen Reduction at Gold Nanoband Electrode. Chemphyschem 2019; 20:529-532. [PMID: 30635976 DOI: 10.1002/cphc.201801028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/19/2018] [Indexed: 01/13/2023]
Abstract
The evaluation of single carbon particle catalysts is critical to better understand the relationship between structure and properties. Here, we use an electrochemical collision method to study the electrocatalytic behaviour of single hollow porous carbon catalyst on gold nanoband electrodes (AuNBE). We observed the catalytic current of oxygen reduction of single carbon particle and quantified the contribution of the porous structure to the catalytic performance. We find that the meso/microporous and hollow structures contribute to the electrocatalytic current. Our research provides direct evidence that the hollow/porous structures improve the electrocatalytic performance.
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Affiliation(s)
- Yue Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Taotao Feng
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Muzhen Xu
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Qiao Tang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Meining Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China
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