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Lu SM, Wang HW, Chen M, Xie BK, Long YT. Unlocking Single Particle Anisotropy in Real-Time for Photoelectrochemistry Processes at the Nanoscale. Angew Chem Int Ed Engl 2024; 63:e202404170. [PMID: 38781086 DOI: 10.1002/anie.202404170] [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: 02/29/2024] [Revised: 05/03/2024] [Accepted: 05/23/2024] [Indexed: 05/25/2024]
Abstract
The key to rationally and rapidly designing high-performance materials is the monitoring and comprehension of dynamic processes within individual particles in real-time, particularly to gain insight into the anisotropy of nanoparticles. The intrinsic property of nanoparticles typically varies from one crystal facet to the next under realistic working conditions. Here, we introduce the operando collision electrochemistry to resolve the single silver nanoprisms (Ag NPs) anisotropy in photoelectrochemistry. We directly identify the effect of anisotropy on the plasmonic-assisted electrochemistry at the single NP/electrolyte interface. The statistical collision frequency shows that heterogeneous diffusion coefficients among crystal facets facilitate Ag NPs to undergo direction-dependent mass transfer toward the gold ultramicroelectrode. Subsequently, the current amplitudes of transient events indicate that the anisotropy enables variations in dynamic interfacial electron transfer behaviors during photothermal processes. The results presented here demonstrate that the measurement precision of collision electrochemistry can be extended to the sub-nanoparticle level, highlighting the potential for high-throughput material screening with comprehensive kinetics information at the nanoscale.
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Affiliation(s)
- Si-Min Lu
- Molecular Sensing and Imaging Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R.China
| | - Hao-Wei Wang
- Molecular Sensing and Imaging Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R.China
| | - Mengjie Chen
- Molecular Sensing and Imaging Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R.China
| | - Bao-Kang Xie
- Molecular Sensing and Imaging Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R.China
| | - Yi-Tao Long
- Molecular Sensing and Imaging Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R.China
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2
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Clarke TB, Krushinski LE, Vannoy KJ, Colón-Quintana G, Roy K, Rana A, Renault C, Hill ML, Dick JE. Single Entity Electrocatalysis. Chem Rev 2024. [PMID: 39018111 DOI: 10.1021/acs.chemrev.3c00723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
Making a measurement over millions of nanoparticles or exposed crystal facets seldom reports on reactivity of a single nanoparticle or facet, which may depart drastically from ensemble measurements. Within the past 30 years, science has moved toward studying the reactivity of single atoms, molecules, and nanoparticles, one at a time. This shift has been fueled by the realization that everything changes at the nanoscale, especially important industrially relevant properties like those important to electrocatalysis. Studying single nanoscale entities, however, is not trivial and has required the development of new measurement tools. This review explores a tale of the clever use of old and new measurement tools to study electrocatalysis at the single entity level. We explore in detail the complex interrelationship between measurement method, electrocatalytic material, and reaction of interest (e.g., carbon dioxide reduction, oxygen reduction, hydrazine oxidation, etc.). We end with our perspective on the future of single entity electrocatalysis with a key focus on what types of measurements present the greatest opportunity for fundamental discovery.
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Affiliation(s)
- Thomas B Clarke
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Lynn E Krushinski
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Kathryn J Vannoy
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | | | - Kingshuk Roy
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ashutosh Rana
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christophe Renault
- Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, Illinois 60660, United States
| | - Megan L Hill
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jeffrey E Dick
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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3
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Liu R, Wang D. Tunneling Electron Transfer across Cell Membrane via Au Nanoparticles in Single Living Cells. NANO LETTERS 2024; 24:2451-2456. [PMID: 38358313 DOI: 10.1021/acs.nanolett.3c03928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Herein, we present a new and simple electrochemical method to detect the intracellular electroactive substances by utilizing the electron tunnelling processes at the metal nanoparticles inside the cells. Intriguing discrete oxidation and reduction current spikes are obtained when testing the cells with loaded Au nanoparticles at the ultramicroelectrodes, which should come from reactive oxygen species (ROS) inside the single cell. The charges enclosed in the current spikes represent the ROS content inside the living cells, as confirmed by the fluorescence studies. As this simple electron tunnelling approach needs no nanoelectrodes or nanotip penetration processes, we believe it could have great potential applications in electrochemical analysis of single living cells.
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Affiliation(s)
- Rujia Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Dengchao Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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4
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Du M, Zhang L, Meng Y, Chen J, Liu F. Impact of Surface Chemistry on Emulsion-Electrode Interactions and Electron-Transfer Kinetics in the Single-Entity Electrochemistry. Anal Chem 2024; 96:1038-1045. [PMID: 38181449 DOI: 10.1021/acs.analchem.3c03462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
Single-entity electrochemistry (SEE) provides powerful means to track a single particle, single cell, and even single molecule from the nano to microscale. The electrode serves as not only the detector of collision but also the surface supplier in SEE, and the fundamental understanding of the electrode surface chemistry on the dynamic particle-electrode interactions and electrochemical responses of a single particle still remains unexplored, particularly for soft particles. Herein, dynamic interactions of microemulsions and the interaction-controlled electron-transfer (ET) kinetics are studied employing SEE and fluorescence spectroscopy. The o/w-type nitrobenzene emulsions were prepared with the surfactant-type room temperature ionic liquids (RTILs). Biased the electrode potential for the reduction of 7,7,8,8-tetracyanoquinodimethane within emulsions, it is surprising to see the distinct collision current signals on the carbon fiber ultramicroelectrode (C UME) and Au ultramicroelectrode (Au UME) in the late stage of chronoamperometric measurements. Theoretical understanding was made to determine the ET kinetics behind the disparate current signals. It is believed that the electrode surface chemistry, i.e., the surface energy, has a great influence on the dynamic emulsion-electrode interactions and ET kinetics. On the hydrophilic surface of Au UME, emulsions tend to decompose/detach from the electrode surface immediately after colliding. In contrast, on the lipophilic surface of C UME with lower surface energy, a layer of oil phase accumulated by the coalescence of emulsions and the migration of the precedent colliding emulsions, which would serve as a barrier to block ET via tunneling as manifested by the gradual slowdown of ET rate and the reduced collision frequency in the late stage of measurement. The impacts of the emulsion size and amphiphilicity of RTILs on the C UME-emulsion interactions and ET kinetics were also investigated.
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Affiliation(s)
- Minshu Du
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Lizhu Zhang
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Yao Meng
- Shaanxi Huaqin New Energy Technology Co., Ltd, Xi'an, Shaanxi 710119, China
| | - Jiajia Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian 361005, China
| | - Feng Liu
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
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5
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Huang SH, Parandhaman M, Farnia S, Kim J, Amemiya S. Nanoelectrochemistry at liquid/liquid interfaces for analytical, biological, and material applications. Chem Commun (Camb) 2023; 59:9575-9590. [PMID: 37458703 PMCID: PMC10416082 DOI: 10.1039/d3cc01982a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Herein, we feature our recent efforts toward the development and application of nanoelectrochemistry at liquid/liquid interfaces, which are also known as interfaces between two immiscible electrolyte solutions (ITIES). Nanopipets, nanopores, and nanoemulsions are developed to create the nanoscale ITIES for the quantitative electrochemical measurement of ion transfer, electron transfer, and molecular transport across the interface. The nanoscale ITIES serves as an electrochemical nanosensor to enable the selective detection of various ions and molecules as well as high-resolution chemical imaging based on scanning electrochemical microscopy. The powerful nanoelectroanalytical methods will be useful for biological and material applications as illustrated by in situ studies of solid-state nanopores, nuclear pore complexes, living bacteria, and advanced nanoemulsions. These studies provide unprecedented insights into the chemical reactivity of important biological and material systems even at the single nanostructure level.
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Affiliation(s)
- Siao-Han Huang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
| | | | - Solaleh Farnia
- Department of Chemistry, University of Rhode Island, Kingston, RI, 02881, USA.
| | - Jiyeon Kim
- Department of Chemistry, University of Rhode Island, Kingston, RI, 02881, USA.
| | - Shigeru Amemiya
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
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6
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Liu Z, Pishgar S, Lancaster M, Maldonado S. Voltammetric Measurement of Rates and Energetics for Surface Methoxylation of Si(100) in Methanol with Dissolved Electron Acceptors Using Si Ultramicroelectrodes. Anal Chem 2023; 95:6818-6827. [PMID: 37075319 DOI: 10.1021/acs.analchem.2c05276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
The steady-state voltammetric responses of n-type Si(100) semiconductor ultramicroelectrodes (SUMEs) immersed in air- and water-free methanolic electrolytes have been measured. The response characteristics of these SUMEs in the absence of illumination were modeled and understood through a framework that describes the distribution of the applied potential across the semiconductor/electrolyte contact using four discrete regions: the semiconductor space charge, surface, Helmholtz, and diffuse layers. The latter region was described by the full Gouy-Chapman model. This framework afforded insight on how relevant parameters such as the semiconductor band edge potentials, the reorganization energies for charge transfer, the standard potential of redox species in solution, the density and energy of surface state populations, and the presence of an insulating (tunneling) layer individually and collectively dictate the observable current-potential responses. With this information, the methoxylation of Si surfaces was evaluated by analysis of the change in voltammetric responses during the course of prolonged immersion in methanol. The electrochemical data were consistent with a surface methoxylation mechanism that depended on the standard potential of redox species dissolved in solution. Estimates of the enthalpies of adsorption as well as the potential-dependent rate constant for surface methoxylation were obtained. Collectively, these measurements supported the contention that the rates of Si surface reactions can be systematically tuned by exposure to dissolved outer-sphere electron acceptors. Moreover, the data represent the quantitative utility of voltammetry with SUMEs for the measurement of semiconductor/liquid contacts.
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Affiliation(s)
- Zhihui Liu
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Sahar Pishgar
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Mitchell Lancaster
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Stephen Maldonado
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
- Program in Applied Physics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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7
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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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8
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Liu X, Tian Q, Li Y, Zhou Z, Wang J, Liu S, Wang C. Electron transfer dynamics and electrocatalytic oxygen evolution activities of the Co3O4 nanoparticles attached to indium tin oxide by self-assembled monolayers. Front Chem 2022; 10:919192. [PMID: 36092657 PMCID: PMC9448888 DOI: 10.3389/fchem.2022.919192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
The Co3O4 nanoparticle-modified indium tin oxide-coated glass slide (ITO) electrodes are successfully prepared using dicarboxylic acid as the self-assembled monolayer through a surface esterification reaction. The ITO-SAM-Co3O4 (SAM = dicarboxylic acid) are active to electrochemically catalyze oxygen evolution reaction (OER) in acid. The most active assembly, with Co loading at 3.31 × 10−8 mol cm−2, exhibits 374 mV onset overpotential and 497 mV overpotential to reach 1 mA cm−2 OER current in 0.1 M HClO4. The electron transfer rate constant (k) is acquired using Laviron’s approach, and the results show that k is not affected by the carbon chain lengths of the SAM (up to 18 -CH2 groups) and that an increase in the average diameter of Co3O4 nanoparticles enhances the k. In addition, shorter carbon chains and smaller Co3O4 nanoparticles can increase the turn-over frequency (TOF) of Co sites toward OER. The Co3O4 nanoparticles tethered to the ITO surface show both a higher number of electrochemically active Co sites and a higher TOF of OER than the Co3O4 nanoparticles bound to ITO using Nafion.
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Affiliation(s)
| | | | | | | | | | | | - Chao Wang
- *Correspondence: Shuling Liu, ; Chao Wang,
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9
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Wang Y, Li M, Ren H. Voltammetric Mapping of Hydrogen Evolution Reaction on Pt Locally via Scanning Electrochemical Cell Microscopy. ACS MEASUREMENT SCIENCE AU 2022; 2:304-308. [PMID: 36785572 PMCID: PMC9836041 DOI: 10.1021/acsmeasuresciau.2c00012] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The advancement in nanoscale electrochemical tools has offered the opportunity to better understand heterogeneity at electrochemical interfaces. Scanning electrochemical cell microscopy (SECCM) has been increasingly used for revealing local kinetics and the distribution of active sites in electrocatalysis. Constant-contact scanning and hopping scanning are the two commonly used modes. The former is intrinsically faster, whereas the latter enables full voltammetry at individual locations. Herein, we revisit a less used mode that combines the advantages of hopping and constant-contact scan, resulting in a faster voltammetric mapping. In this mode, the nanodroplet cell in SECCM maintains contact with the surface during the scanning and makes intermittent pauses for local voltammetry. The elimination of frequent retraction and approach greatly increases the speed of mapping. In addition, iR correction can be readily applied to the voltammetry, resulting in more accurate measurements of the electrode kinetics. This scanning mode is demonstrated in the oxidation of a ferrocene derivative on HOPG and hydrogen evolution reaction (HER) on polycrystalline Pt, serving as model systems for outer-sphere and inner-sphere electron transfer reactions, respectively. While the kinetics of the inner-sphere reaction is consistent spatially, heterogeneity is observed for the kinetics of HER, which is correlated with the crystal orientation of Pt.
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10
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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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11
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Majumdar P, Gao R, White HS. Electroprecipitation of Nanometer-Thick Films of Ln(OH) 3 [Ln = La, Ce, and Lu] at Pt Microelectrodes and Their Effect on Electron-Transfer Reactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8125-8134. [PMID: 35715230 DOI: 10.1021/acs.langmuir.2c01008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We report investigations of the deposition of nanometer-thick Ln(OH)3 films (Ln = La, Ce, and Lu) and their effect on outer-sphere and inner-sphere electron-transfer reactions. Insoluble Ln(OH)3 films are deposited from aqueous solutions of LaCl3 onto the surface of 12.5 μm radius Pt microdisk electrodes during water or oxygen reduction. Both reactions produce interfacial OH-, which complexes with Ln3+, resulting in the precipitation of Ln(OH)3. Surface analyses by scanning electron microscopy (SEM), SEM-energy-dispersive X-ray spectroscopy, and atomic force microscopy indicate the formation of a 1-2 nm thick uniform film. Outer-sphere electron-transfer reactions (Ru(NH3)63+ reduction, FcMeOH oxidation, and Fe(CN)64-/3- oxidation/reduction) were investigated at Ln(OH)3-modified electrodes of different film thicknesses. The results demonstrate that the steady-state transport-limited current for these reactions decreases with an increase in the film thickness. Moreover, the degree of blockage depends upon the redox species, suggesting that the Ln(OH)3 films are free from pinholes greater than the size of the redox molecules. This suggests that the films are either ionically conducting or that electron tunneling occurs across these thin layers. A similar blocking effect was observed for the inner-sphere reductions of H2O and O2. We further demonstrate that the thickness of La(OH)3 films can be controlled by anodic dissolution. Additionally, we show that La3+ lowers the supersaturation of dissolved H2 required to nucleate a stable nanobubble.
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Affiliation(s)
- Pavel Majumdar
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Rui Gao
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Henry S White
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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12
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Chen X, Gao Y, Zhan J, Xia Q, Chen Z, Zhu JJ. Spatiotemporal-Resolved Hyperspectral Raman Imaging of Plasmon-Assisted Reactions at Single Hotspots. Anal Chem 2022; 94:8174-8180. [PMID: 35649160 DOI: 10.1021/acs.analchem.1c05545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Raman spectroscopy facilitates the study of reacting molecules on single nanomaterials. In recent years, the temporal resolution of Raman spectral measurement has been remarkably reduced to the millisecond level. However, the classic scan-based imaging mode limits the application in the dynamical study of reactions at multiple nanostructures. In this paper, we propose a spatiotemporal-resolved Raman spectroscopy (STRS) technology to achieve fast (∼40 ms) and high spatial resolution (∼300 nm) hyperspectral Raman imaging of single nanostructures. With benefits of the outstanding electromagnetic field enhancement factor by surface plasmon resonance (∼1012) and the snapshot hyperspectral imaging strategy, we demonstrate the observation of stepwise Raman signals from single-particle plasmon-assisted reactions. Results reveal that the reaction kinetics is strongly affected by not only the surface plasmon-polariton generation but also the density of Raman molecules. In consideration of the spatiotemporal resolving capability of STRS, we anticipate that it provides a potential platform for further extending the application of Raman spectroscopy methods in the dynamic study of 1D or 2D nanostructures.
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Affiliation(s)
- Xueqin Chen
- School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, PR China
| | - Yan Gao
- School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, PR China
| | - Jiayin Zhan
- School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, PR China
| | - Qing Xia
- School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, PR China
| | - Zixuan Chen
- School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, PR China
| | - Jun-Jie Zhu
- School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, PR China.,Shenzhen Research Institute of Nanjing University, Shenzhen 518000, China
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13
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Alpuche‐Aviles MA. Particle Impact Electrochemistry. ENCYCLOPEDIA OF ELECTROCHEMISTRY 2021:1-30. [DOI: 10.1002/9783527610426.bard030110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
Experiments involving collisions between a single entity and the electrode surface have become an active area of research. The electrochemical contribution of individual nanoparticles (NPs), enzymes, and other entities, such as aggregates or agglomerates, can be determined using particle impact experiments. Destructive nanoimpact experiments of materials, such as Ag, and the electrocatalytic amplification (ECA) are used to detect the NP/electrode interactions. This review covers the seminal work, critical theoretical studies, and some recent applications. The applications to electrocatalysis include measurements of electron transfer rate constants on individual nanoparticles. Applications in analytical chemistry have allowed the detection of nonelectroactive species by detecting the collisions of soft materials, e.g. micellar suspensions and proteins have increased the technique's analytical possibilities. With ECA, NPs can be used as tags for the electrochemical detection of bioanalytes such as DNA, proteins, and liposomes. The theory of ECA collisions, including frequency of collision and the size of the electrochemical current transients, are also covered. For nanoimpacts, the charge measured during a NP electrolysis, such as Ag NP, is used to detect the NP. Measurements of NP diameter are possible, but limitations to this analysis are covered. The electron transfer studies to the electrolysis of Ag and of metal oxides are discussed. Finally, key experimental instrumentations are discussed, including instrumentation techniques for the small currents inherent to single NP measurement. The effect of filtering, instrumentations rise time, and sampling frequency are also covered.
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14
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Wang R, Qian G, Guo J, Ai Q, Liu S, Liu Y, Liang F, Chang S. Nanocollision mediated electrochemical sensing of host-guest chemistry at a nanoelectrode surface. Faraday Discuss 2021; 233:222-231. [PMID: 34889917 DOI: 10.1039/d1fd00054c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical (EC) measurements of dynamic nanoparticle collisions on a support electrode provide a powerful approach to study the electrical properties of interfacial molecules self-assembled on the electrode surface. By introducing a special cage-shaped macrocyclic molecule, cucurbit[7]uril (CB7), onto a gold nanoelectrode surface, we show that the dynamic interactions between CB7 and the colliding nanoparticles can be real-time monitored via the appearance of distinct EC current switching signals. When a guest molecule is included in the CB7 cavity, the changed host-guest chemistry can be probed via the amplitude change of the EC current signals. In addition, different guest molecules can be recognized by CB7 on the nanoelectrode surface, giving rise to distinguishable current jump signals for different host-guest systems. Remarkably, two well-defined current states are observed in the EC measurements of the CB7-ferrocene complex, indicating two orientation geometries of ferrocene inside the CB7 cavity can be resolved in this EC sensing platform. This work demonstrates an effective approach for studying the dynamics of host-guest chemistry at the liquid-solid interface and sheds light on a convenient EC sensor for the recognition of target molecules with the aid of CB7.
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Affiliation(s)
- Ruixia Wang
- The State Key Laboratory of Refractories and Metallurgy, The Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
| | - Gongming Qian
- The State Key Laboratory of Refractories and Metallurgy, The Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
| | - Jing Guo
- The State Key Laboratory of Refractories and Metallurgy, The Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
| | - Qiushuang Ai
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Simin Liu
- The State Key Laboratory for Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Yichong Liu
- The State Key Laboratory of Refractories and Metallurgy, The Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
| | - Feng Liang
- The State Key Laboratory for Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Shuai Chang
- The State Key Laboratory of Refractories and Metallurgy, The Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
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15
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Wang Z, Liu R, Chen HY, Wang H. Plasmonic Imaging of Tuning Electron Tunneling Mediated by a Molecular Monolayer. JACS AU 2021; 1:1700-1707. [PMID: 34723273 PMCID: PMC8549056 DOI: 10.1021/jacsau.1c00292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Probing and tuning the electron tunneling in metal electrode-insulator-metal nanoparticle systems provide a unique vision for understanding the fundamental mechanism of electrochemistry and broadening the horizon in practical applications of molecular electronics in many electrochemical systems. Here we report a plasmonic imaging technique to monitor the local double-layer charging of individual Au nanoparticles deposited on gold electrode separated by monolayer of n-alkanethiol molecules. The thickness of molecular monolayer tunes the tunneling kinetics and conductivity, which predicts the heterogeneous behavior on the modified electrode surface for different electrochemical systems. We studied the distance dependence of the electron tunneling and double layer charging processes by a plasmonic-based electrical impedance microscopy. By performing fast Fourier transform analysis of the recorded plasmonic image sequences, we can quantify the interfacial impedance of single nanoparticles and the tunneling decay constant of molecular layer. We further observed the electron neutralization dynamics during single-nanoparticle collisions on different surfaces. This optical readout of electron tunneling demonstrates an imaging approach to determine the electrical properties of metal electrode-insulator-metal nanoparticle systems, which include the electron tunneling mechanism and local impedance.
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Affiliation(s)
- Zixiao Wang
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, China
| | - Ruihong Liu
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, China
- Zhengzhou
Tobacco Research Institute of CNTC, Zhengzhou 450001, China
| | - Hong-Yuan Chen
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, China
| | - Hui Wang
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing
University, Nanjing 210023, China
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16
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Zakaria ND, Omar MH, Ahmad Kamal NN, Abdul Razak K, Sönmez T, Balakrishnan V, Hamzah HH. Effect of Supporting Background Electrolytes on the Nanostructure Morphologies and Electrochemical Behaviors of Electrodeposited Gold Nanoparticles on Glassy Carbon Electrode Surfaces. ACS OMEGA 2021; 6:24419-24431. [PMID: 34604624 PMCID: PMC8482400 DOI: 10.1021/acsomega.1c02670] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/10/2021] [Indexed: 05/25/2023]
Abstract
Electrodeposition is an electrochemical method employed to deposit stable and robust gold nanoparticles (AuNPs) on electrode surfaces for creating chemically modified electrodes (CMEs). The use of several electrodeposition techniques with different experimental parameters allow in obtaining various surface morphologies of AuNPs deposited on the electrode surface. By considering the electrodeposition of AuNPs in various background electrolytes could play an important strategy in finding the most suitable formation of the electrodeposited AuNP films on the electrode surface. This is because different electrode roughnesses can have different effects on the electrochemical activities of the modified electrodes. Thus, in this study, the electrodeposition of AuNPs onto the glassy carbon (GC) electrode surfaces in various aqueous neutral and acidic electrolytes was achieved by using the cyclic voltammetry (CV) technique with no adjustable CV parameters. Then, surface morphologies and electrochemical activities of the electrodeposited AuNPs were investigated using scanning electron microscopy (SEM), atomic force microscopy (AFM), CV, and electrochemical impedance spectroscopy (EIS). The obtained SEM and 3D-AFM images show that AuNPs deposited at the GC electrode prepared in NaNO3 solution form a significantly better, uniform, and homogeneous electrodeposited AuNP film on the GC electrode surface with nanoparticle sizes ranging from ∼36 to 60 nm. Meanwhile, from the electrochemical performances of the AuNP-modified GC electrodes, characterized by using a mixture of ferricyanide and ferrocyanide ions [Fe(CN6)3-/4-], there is no significant difference observed in the case of charge-transfer resistances (R ct) and heterogeneous electron-transfer rate constants (k o), although there are differences in the surface morphologies of the electrodeposited AuNP films. Remarkably, the R ct values of the AuNP-modified GC electrodes are lower than those of the bare GC electrode by 18-fold, as the R ct values were found to be ∼6 Ω (p < 0.001, n = 3). This has resulted in obtaining k o values of AuNP-modified GC electrodes between the magnitude of 10-2 and 10-3 cm s-1, giving a faster electron-transfer rate than that of the bare GC electrode (10-4 cm s-1). This study confirms that using an appropriate supporting background electrolyte plays a critical role in preparing electrodeposited AuNP films. This approach could lead to nanostructures with a more densely, uniformly, and homogeneously electrodeposited AuNP film on the electrode surfaces, albeit utilizing an easy and simple preparation method.
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Affiliation(s)
- Nor Dyana Zakaria
- Institute
for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia (USM), 11800 Gelugor, Penang, Malaysia
| | - Muhamad Huzaifah Omar
- School
of Chemical Sciences, Universiti Sains Malaysia
(USM), 11800 Gelugor, Penang, Malaysia
| | | | - Khairunisak Abdul Razak
- Institute
for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia (USM), 11800 Gelugor, Penang, Malaysia
- School
of Materials and Mineral Resources Engineering, Universiti Sains Malaysia (USM), 14300 Nibong Tebal, Penang, Malaysia
| | - Turgut Sönmez
- Department
of Energy System Engineering, Technology Faculty, Karabük University, 78050 Karabük, Turkey
- Institut
für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Venugopal Balakrishnan
- Institute
for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia (USM), 11800 Gelugor, Penang, Malaysia
| | - Hairul Hisham Hamzah
- School
of Chemical Sciences, Universiti Sains Malaysia
(USM), 11800 Gelugor, Penang, Malaysia
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17
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Du C, Norris SR, Thakur A, Chen J, VanVeller B, Thuo M. Molecular Conformation in Charge Tunneling across Large-Area Junctions. J Am Chem Soc 2021; 143:13878-13886. [PMID: 34415163 DOI: 10.1021/jacs.1c06622] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Self-assembled monolayers are predicated on thermodynamic equilibrium; hence, their properties project accessible relaxation pathways. Herein, we demonstrate that charge tunneling correlates with conformational degrees of freedom(s). Results from open chain and cyclic head groups show that, as expected, distribution in tunneling data correlates with the orientation of the head group, akin to the odd-even effect and more importantly the degree of conformational freedom, but fluctuates with applied bias. Trends in nature of distributions in current density illuminate the need for higher statistical moments in understanding these rather dynamic systems. We employ skewness, kurtosis, and estimation plots to show that the conformational degree of freedom in the head group significantly amplifies the odd-even effect and may lead to enhanced or perturbed tunneling based on whether the head group is on an odd- or even-parity spacer.
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Affiliation(s)
- Chuanshen Du
- Department of Materials Science and Engineering, Iowa State University, 2220 Hoover Hall, Ames, Iowa 50011 United States
| | - Sean R Norris
- Department of Chemistry, Iowa State University, 3126 Hach Hall, 2438 Pammel Drive, Ames, Iowa 50011-3111, United States
| | - Abhishek Thakur
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Jiahao Chen
- Department of Materials Science and Engineering, Iowa State University, 2220 Hoover Hall, Ames, Iowa 50011 United States.,Micro-Electronic Research Center, Iowa State University, 133 Applied Sciences Complex I, 1925 Scholl Road, Ames, Iowa 50011, United States
| | - Brett VanVeller
- Department of Chemistry, Iowa State University, 3126 Hach Hall, 2438 Pammel Drive, Ames, Iowa 50011-3111, United States
| | - Martin Thuo
- Department of Materials Science and Engineering, Iowa State University, 2220 Hoover Hall, Ames, Iowa 50011 United States.,Micro-Electronic Research Center, Iowa State University, 133 Applied Sciences Complex I, 1925 Scholl Road, Ames, Iowa 50011, United States.,Biopolymer and Biocomposites Research Team, Center for Bioplastics and Biocomposites Iowa State University, 1041 Food Sciences Building, Ames, Iowa 50011, United States
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18
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Hou S, Kluge RM, Haid RW, Gubanova EL, Watzele SA, Bandarenka AS, Garlyyev B. A Review on Experimental Identification of Active Sites in Model Bifunctional Electrocatalytic Systems for Oxygen Reduction and Evolution Reactions. ChemElectroChem 2021. [DOI: 10.1002/celc.202100584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shujin Hou
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
- Catalysis Research Center TUM Ernst-Otto-Fischer-Str. 1 85748 Garching bei München Germany
| | - Regina M. Kluge
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Richard W. Haid
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Elena L. Gubanova
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Sebastian A. Watzele
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
- Catalysis Research Center TUM Ernst-Otto-Fischer-Str. 1 85748 Garching bei München Germany
| | - Batyr Garlyyev
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
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19
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Lu SM, Chen JF, Peng YY, Ma W, Ma H, Wang HF, Hu P, Long YT. Understanding the Dynamic Potential Distribution at the Electrode Interface by Stochastic Collision Electrochemistry. J Am Chem Soc 2021; 143:12428-12432. [PMID: 34347459 DOI: 10.1021/jacs.1c02588] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The potential distribution at the electrode interface is a core factor in electrochemistry, and it is usually treated by the classic Gouy-Chapman-Stern (G-C-S) model. Yet the G-C-S model is not applicable to nanosized particles collision electrochemistry as it describes steady-state electrode potential distribution. Additionally, the effect of single nanoparticles (NPs) on potential should not be neglected because the size of a NP is comparable to that of an electrode. Herein, a theoretical model termed as Metal-Solution-Metal Nanoparticle (M-S-MNP) is proposed to reveal the dynamic electrode potential distribution at the single-nanoparticle level. An explicit equation is provided to describe the size/distance-dependent potential distribution in single NPs stochastic collision electrochemistry, showing the potential distribution is influenced by the NPs. Agreement between experiments and simulations indicates the potential roles of the M-S-MNP model in understanding the charge transfer process at the nanoscale.
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Affiliation(s)
- Si-Min Lu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.,School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jian-Fu Chen
- State Key Laboratory of Chemical Engineering, Centre for Computational Chemistry & Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yue-Yi Peng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.,School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Ma
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hui Ma
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.,School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hai-Feng Wang
- State Key Laboratory of Chemical Engineering, Centre for Computational Chemistry & Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Peijun Hu
- State Key Laboratory of Chemical Engineering, Centre for Computational Chemistry & Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, P. R. China.,School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast BT9 5AG, U.K
| | - Yi-Tao Long
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.,School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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20
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Ai Q, Zhou J, Guo J, Pandey P, Liu S, Fu Q, Liu Y, Deng C, Chang S, Liang F, He J. Observing dynamic molecular changes at single-molecule level in a cucurbituril based plasmonic molecular junction. NANOSCALE 2020; 12:17103-17112. [PMID: 32785409 DOI: 10.1039/d0nr03360j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In recent years, surface enhanced Raman spectroscopy (SERS) has emerged as a prominent tool for probing molecular interaction and reaction with single-molecule sensitivity. Here we use SERS to investigate the dynamic changes of the cucurbit[7]uril (CB[7]) based plasmonic molecular junctions in solution, which are spontaneously formed by the adsorption of gold nanoparticles (GNPs) at the CB[7] modified gold nanoelectrode (GNE) surface. The typical fingerprint Raman peaks of CB[7] are very weak in the SERS spectra. However, chemically enhanced peaks are prominent in the spectra due to the charge transfer across the metal-molecule interface through specific noncovalent interactions between the gold atoms and CB[7] or its guest molecule. We first investigated the selectively enhanced and greatly shifted C[double bond, length as m-dash]O peak of CB[7] in the SERS spectra. Based on the bias-dependent changes of the C[double bond, length as m-dash]O peak, we found the gold-carbonyl interaction was strengthened by the positive bias applied to the GNE, resulting in stable CB[7] junctions. Next, we found the CB[7] junction could also be stabilized by the inclusion of a guest molecule amino-ferrocene, attributed to the interactions between gold adatoms and the cyclopentadienyl ring of the guest molecule. Because this interaction is sensitive to the orientation of the guest molecule in the cavity, we revealed the rotational motion of a guest molecule inside the CB[7] cavity based on the dynamic spectral changes of the cyclopentadienyl ring peak.
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Affiliation(s)
- Qiushuang Ai
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China. and School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China and Department of Physics, Florida International University, Miami, Florida, 33199, USA.
| | - Jianghao Zhou
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China. and Department of Physics, Florida International University, Miami, Florida, 33199, USA.
| | - Jing Guo
- Department of Physics, Florida International University, Miami, Florida, 33199, USA.
| | - Popular Pandey
- Department of Physics, Florida International University, Miami, Florida, 33199, USA.
| | - Simin Liu
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China. and School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China and Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
| | - Qiang Fu
- Jiangxi College of Traditional Chinese Medicine, Fuzhou, Jiangxi, 344000, China
| | - Yichong Liu
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
| | - Chengji Deng
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China.
| | - Shuai Chang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China. and Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
| | - Feng Liang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China. and School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China and Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
| | - Jin He
- Department of Physics, Florida International University, Miami, Florida, 33199, USA. and Biomolecular Science Institute, Florida International University, Miami, Florida 33199, USA
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21
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Terrero Rodríguez IM, Borrill AJ, Schaffer KJ, Hernandez JB, O’Neil GD. Light-Addressable Electrochemical Sensing with Electrodeposited n-Silicon/Gold Nanoparticle Schottky Junctions. Anal Chem 2020; 92:11444-11452. [DOI: 10.1021/acs.analchem.0c02512] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Irina M. Terrero Rodríguez
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey 07043, United States
| | - Alexandra J. Borrill
- Department of Chemistry and the Centre for Doctoral Training in Diamond Science and Technology, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Katherine J. Schaffer
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey 07043, United States
| | - Jocelyn B. Hernandez
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey 07043, United States
| | - Glen D. O’Neil
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey 07043, United States
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22
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Gutierrez-Portocarrero S, Sauer K, Karunathilake N, Subedi P, Alpuche-Aviles MA. Digital Processing for Single Nanoparticle Electrochemical Transient Measurements. Anal Chem 2020; 92:8704-8714. [PMID: 32510201 DOI: 10.1021/acs.analchem.9b05238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We demonstrate the use of digital frequency analysis in single nanoparticle electrochemical detection. The method uses fast Fourier transforms (FFT) of single entity electrochemical transients and digital filters. These filters effectively remove noise with the Butterworth filter preserving the amplitude of the fundamental processes in comparison with the rectangle filter. Filtering was done in three different types of experiments: single nanoparticle electrocatalytic amplification, photocatalytic amplification, and nanoimpacts of single entities. In the individual nanoparticle stepwise transients, low-pass filters maintain the step height. Furthermore, a Butterworth band-stop filter preserves the peak height in blip transients if the band-stop cutoff frequencies are compatible with the nanoparticle/electrode transient interactions. In hydrazine oxidation by single Au nanoparticles, digital filtering does not complicate the analysis of the step signal because the stepwise change of the particle-by-particle current is preserved with the rectangle, Bessel and Butterworth low pass filters, with the later minimizing time shifts. In the photocurrent single entity transients, we demonstrate resolving a step smaller than the noise. In photoelectrochemical setups, the background processes are stochastic and appear at distinct frequencies that do not necessarily correlate with the detection frequency (fp), of TiO2 nanoparticles. This lack of correlation indicates that background signals have their characteristic frequencies and that it is advantageous to perform filtering a posteriori. We also discuss selecting the filtering frequencies based on sampling rates and fp. In experiments electrolyzing ZnO, that model nanoimpacts, a band-stop filter can remove environmental noise within the sampling spectral region while preserving relevant information on the current transient. We discuss the limits of Bessel and Butterworth filters for resolving consecutive transients.
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Affiliation(s)
| | - Kiley Sauer
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, United States
| | - Nelum Karunathilake
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, United States
| | - Pradeep Subedi
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, United States
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23
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Exploring dynamic interactions of single nanoparticles at interfaces for surface-confined electrochemical behavior and size measurement. Nat Commun 2020; 11:2307. [PMID: 32385284 PMCID: PMC7210955 DOI: 10.1038/s41467-020-16149-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Accepted: 04/10/2020] [Indexed: 12/12/2022] Open
Abstract
With the development of new instruments and methodologies, the highly dynamic behaviors of nanoparticle at the liquid-solid interface have been studied. However, the dynamic nature of the electrochemical behavior of individual nanoparticles on the electrode interface is still poorly understood. Here, we generalize scaling relations to predict nanoparticle-electrode interactions by examining the adsorption energy of nanoparticles at an ultramicroelectrode interface. Based on the theoretical predictions, we investigate the interaction-modulated dynamic electrochemical behaviors for the oxidation of individual Ag nanoparticles. Typically, significantly distinct current traces are observed owing to the adsorption-mediated motion of Ag nanoparticles. Inspired by restraining the stochastic paths of particles in the vicinity of the electrode interface to produce surface-confined current traces, we successfully realize high-resolution size measurements of Ag nanoparticles in mixed-sample systems. This work offers a better understanding of dynamic interactions of nanoparticles at the electrochemical interface and displays highly valuable applications of single-entity electrochemistry. Single-entity electrochemistry has been proposed for studying properties of single nanoparticles (NPs). Here, the authors make use of adsorption-mediated motion of Ag NPs to take individual NP size measurements using electrochemical impacts with excellent agreement to standard imaging techniques.
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24
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An ultrasensitive photoelectrochemical platform for quantifying photoinduced electron-transfer properties of a single entity. Nat Protoc 2019; 14:2672-2690. [PMID: 31391579 DOI: 10.1038/s41596-019-0197-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 05/15/2019] [Indexed: 02/06/2023]
Abstract
Understanding the photoinduced electron-transfer process is of paramount importance for realizing efficient solar energy conversion. It is rather difficult to clarify the link between the specific properties and the photoelectrochemical performance of an individual component in an ensemble system because data are usually presented as averages because of interplay of the heterogeneity of the bulk system. Here, we report a step-by-step protocol to fabricate an ultrasensitive photoelectrochemical platform for real-time detection of the intrinsic photoelectrochemical behaviors of a single entity with picoampere and sub-millisecond sensitivity. Using a micron-thickness nanoparticulate TiO2-filmed Au ultramicroelectrode (UME) as the electron-transport electrode, photocurrent transients can be observed for each individual dye-tagged oxide semiconductor nanoparticle collision associated with a single-entity photoelectrochemical reaction. This protocol allows researchers to obtain high-resolution photocurrent signals to quantify the photoinduced electron-transfer properties of an individual entity, as well as to precisely process the data obtained. We also include procedures for dynamic light scattering (DLS) analysis, transmission electron microscopy (TEM) imaging and collision frequency-concentration correlation to confirm that the photoelectrochemical collision events occur at an unambiguously single-entity level. The time required for the entire protocol is ~36 h, with a single-entity photoelectrochemical measurement taking <1 h to complete for each independent experiment. This protocol requires basic nanoelectrochemistry and nanotechnology skills, as well as an intermediate-level understanding of photoelectrochemistry.
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25
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Xu W, Zou G, Hou H, Ji X. Single Particle Electrochemistry of Collision. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804908. [PMID: 30740883 DOI: 10.1002/smll.201804908] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/21/2018] [Indexed: 05/23/2023]
Abstract
A novel electrochemistry method using stochastic collision of particles at microelectrode to study their performance in single-particle scale has obtained remarkable development in recent years. This convenient and swift analytical method, which can be called "nanoimpact," is focused on the electrochemical process of the single particle rather than in complex ensemble systems. Many researchers have applied this nanoimpact method to investigate various kinds of materials in many research fields, including sensing, electrochemical catalysis, and energy storage. However, the ways how they utilize the method are quite different and the key points can be classified into four sorts: sensing particles at ultralow concentration, theory optimization, kinetics of mediated catalytic reaction, and redox electrochemistry of the particles. This review gives a brief overview of the development of the nanoimpact method from the four aspects in a new perspective.
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Affiliation(s)
- Wei Xu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Guoqiang Zou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Hongshuai Hou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Xiaobo Ji
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
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26
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Sabaragamuwe SG, Conti D, Puri SR, Andreu I, Kim J. Single-Entity Electrochemistry of Nanoemulsion: The Nanostructural Effect on Its Electrochemical Behavior. Anal Chem 2019; 91:9599-9607. [PMID: 31260275 DOI: 10.1021/acs.analchem.9b00920] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
New electrochemical approaches have been applied to investigate nanoemulsions (NEs) for their nanostructures and the relevant electrochemical activity by single-entity electrochemistry (SEE). Herein, we make highly monodisperse NEs with ∼40 nm diameter, composed of biocompatible surfactants, castor oil as plasticizers, and ion exchangers. Dynamic light scattering (DLS) measurements with periodically varying surfactant to oil ratios provide us with a structural implication about uneven distributions of incorporating components inside NEs. To support this structural insight, we apply SEE and selectively monitor electron-transfer reactions occurring at individual NEs containing ferrocene upon each collision onto a Pt ultramicroelectrode. The quantitative analysis of the nanoelectrochemical results along with DLS and transmission electron microscopy (TEM) measurements reveal nanostructured compartments of incorporating components inside NEs and their effect on the electrochemical behavior. Indeed, a tunneling barrier inside NEs could be formed depending on the NE composition, thus determining an electrochemical behavior of NEs, which cannot be differentiated by a general morphological study such as DLS and TEM but by our SEE measurements. Furthermore, by employing the nanopipet voltammetry with an interface between two immiscible electrolyte solutions (ITIES) to mimic the NE interface, we could explicitly investigate that the electron-transfer reaction occurring inside NEs is facilitated by the ion-transfer reaction. Overall, these comprehensive electrochemical approaches enable us to elucidate the relation between structures and the electrochemical functionality of NEs and provide quantitative criteria for the proper compositions of NEs regarding their activity in the electrochemical applications. Also, this finding should be a prerequisite for suitable biomedical/electrochemical applications of NEs.
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27
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Liu R, Shan X, Wang H, Tao N. Plasmonic Measurement of Electron Transfer between a Single Metal Nanoparticle and an Electrode through a Molecular Layer. J Am Chem Soc 2019; 141:11694-11699. [PMID: 31260624 DOI: 10.1021/jacs.9b05388] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We study electron transfer associated with electrocatalytic reduction of hydrogen on single platinum nanoparticles separated from an electrode surface with an alkanethiol monolayer using a plasmonic imaging technique. By varying the monolayer thickness, we show that the reaction rate depends on electron tunneling from the electrode to the nanoparticle. The tunneling decay constant is ∼4.3 nm-1, which is small compared to those in literature for alkanethiols. We attribute it to a reduced tunneling barrier resulting from biasing the electrode potential negatively to the hydrogen reduction regime. In addition to allowing study of electron transfer of single nanoparticles, the work demonstrates an optical method to measure charge transport in molecules electrically wired to two electrodes.
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Affiliation(s)
- Ruihong Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Xiaonan Shan
- Department of Electrical and Computer Engineering , University of Houston , Houston , Texas 77204 , United States
| | - Hui Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Nongjian Tao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China.,Biodesign Center for Bioelectronics and Biosensors and School of Electrical, Energy and Computer Engineering , Arizona State University , Tempe , Arizona 85287 , United States
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28
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Patrice FT, Qiu K, Ying YL, Long YT. Single Nanoparticle Electrochemistry. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2019; 12:347-370. [PMID: 31018101 DOI: 10.1146/annurev-anchem-061318-114902] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Experimental techniques to monitor and visualize the behaviors of single nanoparticles have not only revealed the significant spatial and temporal heterogeneity of those individuals, which are hidden in ensemble methods, but more importantly, they have also enabled researchers to elucidate the origin of such heterogeneity. In pursuing the intrinsic structure-function relations of single nanoparticles, the recently developed stochastic collision approach demonstrated some early promise. However, it was later realized that the appropriate sizing of a single nanoparticle by an electrochemical method could be far more challenging than initially expected owing to the dynamic motion of nanoparticles in electrolytes and complex charge-transfer characteristics at electrode surfaces. This clearly indicates a strong necessity to integrate single nanoparticle electrochemistry with high-resolution optical microscopy. Hence, this review aims to give a timely update of the latest progress for both electrochemically sensing and seeing single nanoparticles. A major focus is on collision-based measurements, where nanoparticles or single entities in solution impact on a collector electrode and the electrochemical response is recorded. These measurements are further enhanced with optical measurements in parallel. For completeness, advances in other related methods for single nanoparticle electrochemistry are also included.
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Affiliation(s)
- Fato Tano Patrice
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; ;
| | - Kaipei Qiu
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; ;
| | - Yi-Lun Ying
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; ;
| | - Yi-Tao Long
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; ;
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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Herrera SE, Davia FG, Williams FJ, Calvo EJ. Metal Nanoparticle Enhancement of Electron Transfer to Tethered Redox Centers through Self-Assembled Molecular Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6297-6303. [PMID: 31012590 DOI: 10.1021/acs.langmuir.9b00280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-nanoparticle-mediated electron transfer (ET) across an insulator thin film containing nanoparticles with attached redox centers was studied using electrochemical impedance spectroscopy. Specifically, a gold spherical microelectrode was modified with 16-amino-1-hexa-decanethiol, creating an insulator film. This was followed by the electrostatic adsorption of gold nanoparticles and the covalent attachment of Os2+ redox centers. A variation of the Creager-Wooster method was developed to get quantitative information regarding the ET kinetics of the system. The experimental data obtained from a single measurement was fitted with a model that decouples two or more ET processes with different time constants and considers a Gaussian distribution of tunneling distances. Two parallel ET mechanisms were observed: one in which the electrons flow by tunneling between the surface and the redox couples with a low kET0 = 1.3 s-1 and a second one in which an enhancement of the electron transfer is produced due to the presence of the gold nanoparticles with a kET0 = 7 × 104 s-1. In this study, we demonstrate that the gold nanoparticle electron transfer enhancement is present only in the local environment of the nanoparticle, showing that the nanoscale architecture is crucial to maximize the enhancement effect.
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Affiliation(s)
- Santiago E Herrera
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
| | - Federico G Davia
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
| | - Federico J Williams
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
| | - Ernesto J Calvo
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Ciudad Universitaria, Pabellón 2 , Buenos Aires C1428EHA , Argentina
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30
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OKAWA H, MAKI H, MIZUHATA M. Influence of Immersion of Polyethyleneimine Thin Film Modified with Gold Nanoparticles in [Ru(NH<sub>3</sub>)<sub>6</sub>]Cl<sub>3</sub> Aqueous Solution on Redox Reaction on AuNPs. ELECTROCHEMISTRY 2019. [DOI: 10.5796/electrochemistry.18-00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Hiroyuki OKAWA
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University
| | - Hideshi MAKI
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University
- Center for Environmental Management, Kobe University
| | - Minoru MIZUHATA
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University
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31
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Walmsley JD, Hill JW, Saha P, Hill CM. Probing Electrocatalytic CO2 Reduction at Individual Cu Nanostructures via Optically Targeted Electrochemical Cell Microscopy. JOURNAL OF ANALYSIS AND TESTING 2019. [DOI: 10.1007/s41664-019-00090-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Mergel O, Schneider S, Tiwari R, Kühn PT, Keskin D, Stuart MCA, Schöttner S, de Kanter M, Noyong M, Caumanns T, Mayer J, Janzen C, Simon U, Gallei M, Wöll D, van Rijn P, Plamper FA. Cargo shuttling by electrochemical switching of core-shell microgels obtained by a facile one-shot polymerization. Chem Sci 2019; 10:1844-1856. [PMID: 30842853 PMCID: PMC6371888 DOI: 10.1039/c8sc04369h] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/02/2018] [Indexed: 12/14/2022] Open
Abstract
Controlling and understanding the electrochemical properties of electroactive polymeric colloids is a highly topical but still a rather unexplored field of research. This is especially true when considering more complex particle architectures like stimuli-responsive microgels, which would entail different kinetic constraints for charge transport within one particle. We synthesize and electrochemically address dual stimuli responsive core-shell microgels, where the temperature-responsiveness modulates not only the internal structure, but also the microgel electroactivity both on an internal and on a global scale. In detail, a facile one-step precipitation polymerization results in architecturally advanced poly(N-isopropylacrylamide-co-vinylferrocene) P(NIPAM-co-VFc) microgels with a ferrocene (Fc)-enriched (collapsed/hard) core and a NIPAM-rich shell. While the remaining Fc units in the shell are electrochemically accessible, the electrochemical activity of Fc in the core is limited due to the restricted mobility of redox active sites and therefore restricted electron transfer in the compact core domain. Still, prolonged electrochemical action and/or chemical oxidation enable a reversible adjustment of the internal microgel structure from core-shell microgels with a dense core to completely oxidized microgels with a highly swollen core and a denser corona. The combination of thermo-sensitive and redox-responsive units being part of the network allows for efficient amplification of the redox response on the overall microgel dimension, which is mainly governed by the shell. Further, it allows for an electrochemical switching of polarity (hydrophilicity/hydrophobicity) of the microgel, enabling an electrochemically triggered uptake and release of active guest molecules. Hence, bactericidal drugs can be released to effectively kill bacteria. In addition, good biocompatibility of the microgels in cell tests suggests suitability of the new microgel system for future biomedical applications.
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Affiliation(s)
- Olga Mergel
- Institute of Physical Chemistry , RWTH Aachen University , Landoltweg 2 , 52056 Aachen , Germany
- Department of Biomedical Engineering-FB40 , University of Groningen , University Medical Center Groningen , A. Deusinglaan 1 , Groningen , 9713 AV , The Netherlands
| | - Sabine Schneider
- Institute of Physical Chemistry , RWTH Aachen University , Landoltweg 2 , 52056 Aachen , Germany
| | - Rahul Tiwari
- DWI - Leibniz Institute for Interactive Materials , RWTH Aachen University , Forckenbeckstraße 50 , 52056 Aachen , Germany
| | - Philipp T Kühn
- Department of Biomedical Engineering-FB40 , University of Groningen , University Medical Center Groningen , A. Deusinglaan 1 , Groningen , 9713 AV , The Netherlands
| | - Damla Keskin
- Department of Biomedical Engineering-FB40 , University of Groningen , University Medical Center Groningen , A. Deusinglaan 1 , Groningen , 9713 AV , The Netherlands
| | - Marc C A Stuart
- Groningen Biomolecular Sciences and Biotechnology Institute , Stratingh Institute for Chemistry , University of Groningen , Nijenborgh 7 , 9747 AG Groningen , The Netherlands
| | - Sebastian Schöttner
- Ernst-Berl-Institute for Chemical Engineering and Macromolecular Chemistry , Technische Universität Darmstadt , Alarich-Weiss-Straße 4 , D-64287 Darmstadt , Germany
| | - Martinus de Kanter
- Chair for Laser Technology LLT , RWTH Aachen University , Steinbachstr. 15 , 52074 Aachen , Germany
| | - Michael Noyong
- Institute of Inorganic Chemistry , JARA-SOFT , RWTH Aachen University , Landoltweg 1 , 52056 Aachen , Germany
| | - Tobias Caumanns
- GFE Central Facility for Electron Microscopy , RWTH Aachen University , Ahornstraße 55 , D-52074 Aachen , Germany
| | - Joachim Mayer
- GFE Central Facility for Electron Microscopy , RWTH Aachen University , Ahornstraße 55 , D-52074 Aachen , Germany
| | - Christoph Janzen
- Fraunhofer Institute for Laser Technology (ILT) , Steinbachstr. 15 , 52074 Aachen , Germany
| | - Ulrich Simon
- Institute of Inorganic Chemistry , JARA-SOFT , RWTH Aachen University , Landoltweg 1 , 52056 Aachen , Germany
| | - Markus Gallei
- Ernst-Berl-Institute for Chemical Engineering and Macromolecular Chemistry , Technische Universität Darmstadt , Alarich-Weiss-Straße 4 , D-64287 Darmstadt , Germany
| | - Dominik Wöll
- Institute of Physical Chemistry , RWTH Aachen University , Landoltweg 2 , 52056 Aachen , Germany
| | - Patrick van Rijn
- Department of Biomedical Engineering-FB40 , University of Groningen , University Medical Center Groningen , A. Deusinglaan 1 , Groningen , 9713 AV , The Netherlands
| | - Felix A Plamper
- Institute of Physical Chemistry , RWTH Aachen University , Landoltweg 2 , 52056 Aachen , Germany
- Institute of Physical Chemistry , TU Bergakademie Freiberg , Leipziger Straße 29 , 09599 Freiberg , Germany . ; ; Tel: +49-3731-39-2139
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33
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Lv X, Li M, Guo Z, Zheng X. Electrochemiluminescence observing the surface features of Ru-doped silica nanoparticles based on nanoparticle-ultramicroelectrode collision. LUMINESCENCE 2019; 34:334-340. [PMID: 30734468 DOI: 10.1002/bio.3611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 11/21/2018] [Accepted: 01/06/2019] [Indexed: 12/12/2022]
Abstract
We present an innovative and sensitive electrogenerated chemiluminescence (ECL) strategy for observing the surface feature of a single silica nanoparticle based on its collision with an ultramicroelectrode (UME). As an ECL luminophore, Ru(bpy)3 2+ molecules are doped into silica nanoparticles. The stochastic collision events of Ru(bpy)3 2+ -doped silica nanoparticles (RuSNPs) can be tracked by observing the ECL 'blips' from the ECL reaction of Ru(bpy)3 2+ with a coreactant in solution. When RuSNPs collided with UME, Ru(bpy)3 2+ molecules that only exist near the collision site of silica nanoparticles (NPs) were electrochemically oxidized to form Ru(bpy)3 3+ , and then emitted light, because silica NPs are insulated. The inhomogeneous properties of silica nanoparticle surfaces will produce diverse ECL blips in intensity and shape. In addition, distribution gradients from the he Ru(bpy)3 2+ in a silica matrix also affect ECL blips. Some information on the surface properties of silica NPs can be obtained by observation of single silica collision events.
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Affiliation(s)
- Xiaoqin Lv
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Min Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Zhihui Guo
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Xingwang Zheng
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China
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34
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Ostojic N, Duan Z, Galyamova A, Henkelman G, Crooks RM. Electrocatalytic Study of the Oxygen Reduction Reaction at Gold Nanoparticles in the Absence and Presence of Interactions with SnOx Supports. J Am Chem Soc 2018; 140:13775-13785. [DOI: 10.1021/jacs.8b08036] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nevena Ostojic
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Zhiyao Duan
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Aigerim Galyamova
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Graeme Henkelman
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
| | - Richard M. Crooks
- Department of Chemistry, Center for Electrochemistry, and Texas Materials Institute, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
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35
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Electrochemical perspective on the size-dependent density of states at single graphene flake. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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36
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Wang Y, Shan X, Tao N. Emerging tools for studying single entity electrochemistry. Faraday Discuss 2018; 193:9-39. [PMID: 27722354 DOI: 10.1039/c6fd00180g] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Electrochemistry studies charge transfer and related processes at various microscopic structures (atomic steps, islands, pits and kinks on electrodes), and mesoscopic materials (nanoparticles, nanowires, viruses, vesicles and cells) made by nature and humans, involving ions and molecules. The traditional approach measures averaged electrochemical quantities of a large ensemble of these individual entities, including the microstructures, mesoscopic materials, ions and molecules. There is a need to develop tools to study single entities because a real system is usually heterogeneous, e.g., containing nanoparticles with different sizes and shapes. Even in the case of "homogeneous" molecules, they bind to different microscopic structures of an electrode, assume different conformations and fluctuate over time, leading to heterogeneous reactions. Here we highlight some emerging tools for studying single entity electrochemistry, discuss their strengths and weaknesses, and provide personal views on the need for tools with new capabilities for further advancing single entity electrochemistry.
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Affiliation(s)
- Yixian Wang
- Center for Biosensors and Bioelectronics, Biodesign Institute and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA.
| | - Xiaonan Shan
- Center for Biosensors and Bioelectronics, Biodesign Institute and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA.
| | - Nongjian Tao
- Center for Biosensors and Bioelectronics, Biodesign Institute and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA. and State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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37
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Sun T, Wang D, Mirkin MV. Tunneling Mode of Scanning Electrochemical Microscopy: Probing Electrochemical Processes at Single Nanoparticles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Tong Sun
- Department of Chemistry and Biochemistry Queens College-CUNY Flushing NY 11367 USA
- The Graduate Center of CUNY New York NY 10016 USA
| | - Dengchao Wang
- Department of Chemistry and Biochemistry Queens College-CUNY Flushing NY 11367 USA
| | - Michael V. Mirkin
- Department of Chemistry and Biochemistry Queens College-CUNY Flushing NY 11367 USA
- The Graduate Center of CUNY New York NY 10016 USA
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38
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Sun T, Wang D, Mirkin MV. Tunneling Mode of Scanning Electrochemical Microscopy: Probing Electrochemical Processes at Single Nanoparticles. Angew Chem Int Ed Engl 2018; 57:7463-7467. [DOI: 10.1002/anie.201801115] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/24/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Tong Sun
- Department of Chemistry and Biochemistry Queens College-CUNY Flushing NY 11367 USA
- The Graduate Center of CUNY New York NY 10016 USA
| | - Dengchao Wang
- Department of Chemistry and Biochemistry Queens College-CUNY Flushing NY 11367 USA
| | - Michael V. Mirkin
- Department of Chemistry and Biochemistry Queens College-CUNY Flushing NY 11367 USA
- The Graduate Center of CUNY New York NY 10016 USA
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39
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Chen Q, Luo L. Correlation between Gas Bubble Formation and Hydrogen Evolution Reaction Kinetics at Nanoelectrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4554-4559. [PMID: 29569923 DOI: 10.1021/acs.langmuir.8b00435] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report the correlation between H2 gas bubble formation potential and hydrogen evolution reaction (HER) activity for Au and Pt nanodisk electrodes (NEs). Microkinetic models were formulated to obtain the HER kinetic information for individual Au and Pt NEs. We found that the rate-determining steps for the HER at Au and Pt NEs were the Volmer step and the Heyrovsky step, respectively. More interestingly, the standard rate constant ( k0) of the rate-determining step was found to vary over 2 orders of magnitude for the same type of NEs. The observed variations indicate the HER activity heterogeneity at the nanoscale. Furthermore, we discovered a linear relationship between bubble formation potential ( Ebubble) and log( k0) with a slope of 125 mV/decade for both Au and Pt NEs. As log ( k0) increases, Ebubble shifts linearly to more positive potentials, meaning NEs with higher HER activities form H2 bubbles at less negative potentials. Our theoretical model suggests that such linear relationship is caused by the similar critical bubble formation condition for Au and Pt NEs with varied sizes. Our results have potential implications for using gas bubble formation to evaluate the HER activity distribution of nanoparticles in an ensemble.
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Affiliation(s)
- Qianjin Chen
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
- College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China
| | - Long Luo
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
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40
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Guo J, Pan J, Chang S, Wang X, Kong N, Yang W, He J. Monitoring the Dynamic Process of Formation of Plasmonic Molecular Junctions during Single Nanoparticle Collisions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1704164. [PMID: 29493086 DOI: 10.1002/smll.201704164] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/21/2018] [Indexed: 05/23/2023]
Abstract
The capability to study the dynamic formation of plasmonic molecular junction is of fundamental importance, and it will provide new insights into molecular electronics/plasmonics, single-entity electrochemistry, and nanooptoelectronics. Here, a facile method to form plasmonic molecular junctions is reported by utilizing single gold nanoparticle (NP) collision events at a highly curved gold nanoelectrode modified with a self-assembled monolayer. By using time-resolved electrochemical current measurement and surface-enhanced Raman scattering spectroscopy, the current changes and the evolution of interfacial chemical bonding are successfully observed in the newly formed molecular tunnel junctions during and after the gold NP "hit-n-stay" and "hit-n-run" collision events. The results lead to an in-depth understanding of the single NP motion and the associated molecular level changes during the formation of the plasmonic molecular junctions in a single NP collision event. This method also provides a new platform to study molecular changes at the single molecule level during electron transport in a dynamic molecular tunnel junction.
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Affiliation(s)
- Jing Guo
- Department of Physics, Florida International University, Miami, FL, 33199, USA
| | - Jie Pan
- Department of Physics, Florida International University, Miami, FL, 33199, USA
| | - Shuai Chang
- College of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China
| | - Xuewen Wang
- Department of Physics, Florida International University, Miami, FL, 33199, USA
| | - Na Kong
- Center for Chemistry and Biotechnology, School of Life and Environmental Science, Deakin University, VIC, 3216, Australia
| | - Wenrong Yang
- Center for Chemistry and Biotechnology, School of Life and Environmental Science, Deakin University, VIC, 3216, Australia
| | - Jin He
- Department of Physics, Florida International University, Miami, FL, 33199, USA
- Department of Physics and Biomolecular Science Institute, Florida International University, Miami, FL, 33199, USA
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41
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Sun T, Wang D, Mirkin M. Electrochemistry at a single nanoparticle: from bipolar regime to tunnelling. Faraday Discuss 2018; 210:173-188. [DOI: 10.1039/c8fd00041g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper is concerned with long-distance interactions between an unbiased metal nanoparticle (NP) and a nanoelectrode employed as a tip in the scanning electrochemical microscope (SECM).
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Affiliation(s)
- Tong Sun
- Department of Chemistry and Biochemistry
- Queens College-CUNY
- Flushing
- USA
- The Graduate Center of CUNY
| | - Dengchao Wang
- Department of Chemistry and Biochemistry
- Queens College-CUNY
- Flushing
- USA
| | - Michael V. Mirkin
- Department of Chemistry and Biochemistry
- Queens College-CUNY
- Flushing
- USA
- The Graduate Center of CUNY
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42
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Kai T, Zoski CG, Bard AJ. Scanning electrochemical microscopy at the nanometer level. Chem Commun (Camb) 2018; 54:1934-1947. [DOI: 10.1039/c7cc09777h] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Chemical and electrochemical reactions at high temporal and spatial resolution can be studied using nanoscale SECM.
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Affiliation(s)
- Tianhan Kai
- Center for Electrochemistry
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Cynthia G. Zoski
- Center for Electrochemistry
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Allen J. Bard
- Center for Electrochemistry
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
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43
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Kai T, Zhou M, Duan Z, Henkelman GA, Bard AJ. Detection of CO 2•- in the Electrochemical Reduction of Carbon Dioxide in N,N-Dimethylformamide by Scanning Electrochemical Microscopy. J Am Chem Soc 2017; 139:18552-18557. [PMID: 29220186 DOI: 10.1021/jacs.7b08702] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The electrocatalytic reduction of CO2 has been studied extensively and produces a number of products. The initial reaction in the CO2 reduction is often taken to be the 1e formation of the radical anion, CO2•-. However, the electrochemical detection and characterization of CO2•- is challenging because of the short lifetime of CO2•-, which can dimerize and react with proton donors and even mild oxidants. Here, we report the generation and quantitative determination of CO2•- in N,N-dimethylformamide (DMF) with the tip generation/substrate collection (TG/SC) mode of scanning electrochemical microscopy (SECM). CO2 was reduced at a hemisphere-shaped Hg/Pt ultramicroelectrode (UME) or a Hg/Au film UME, which were utilized as the SECM tips. The CO2•- produced can either dimerize to form oxalate within the nanogap between SECM tip and substrate or collected at SECM substrate (e.g., an Au UME). The collection efficiency (CE) for CO2•- depends on the distance (d) between the tip and substrate. The dimerization rate (6.0 × 108 M-1 s-1) and half-life (10 ns) of CO2•- can be evaluated by fitting the collection efficiency vs distance curve. The dimerized species of CO2•-, oxalate, can also be determined quantitatively. Furthermore, the formal potential (E0') and heterogeneous rate constant (k0) for CO2 reduction were determined with different quaternary ammonium electrolytes. The significant difference in k0 is due to a tunneling effect caused by the adsorption of the electrolytes on the electrode surface at negative potentials.
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Affiliation(s)
- Tianhan Kai
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Min Zhou
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Zhiyao Duan
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Graeme A Henkelman
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Allen J Bard
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
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44
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Serafín V, Torrente-Rodríguez RM, González-Cortés A, García de Frutos P, Sabaté M, Campuzano S, Yáñez-Sedeño P, Pingarrón JM. An electrochemical immunosensor for brain natriuretic peptide prepared with screen-printed carbon electrodes nanostructured with gold nanoparticles grafted through aryl diazonium salt chemistry. Talanta 2017; 179:131-138. [PMID: 29310212 DOI: 10.1016/j.talanta.2017.10.063] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/27/2017] [Accepted: 10/29/2017] [Indexed: 10/18/2022]
Abstract
A sensitive amperometric immunosensor has been prepared by immobilization of capture antibodies onto gold nanoparticles (AuNPs) grafted on a screen-printed carbon electrode (SPCE) through aryl diazonium salt chemistry using 4-aminothiophenol (AuNPs-S-Phe-SPCE). The immunosensor was designed for the accurate determination of clinically relevant levels of B-type natriuretic peptide (BNP) in human serum samples. The nanostructured electrochemical platform resulted in an ordered layer of AuNPs onto SPCEs which combined the advantages of high conductivity and improved stability of immobilized biomolecules. The resulting disposable immunosensor used a sandwich type immunoassay involving a peroxidase-labeled detector antibody. The amperometric transduction was carried out at -0.20V (vs the Ag pseudo-reference electrode) upon the addition of hydroquinone (HQ) as electron transfer mediator and H2O2 as the enzyme substrate. The nanostructured immunosensors show a storage stability of at least 25 days, a linear range between 0.014 and 15ngmL-1, and a LOD of 4pgmL-1, which is 100 times lower than the established cut-off value for heart failure (HF) diagnosis. The performance of the immunosensor is advantageously compared with that provided with immunosensors prepared by grafting SPCE with p-phenylendiamine (H2N-Phe-SPCE) and attaching AuNPs by immersion into an AuNPs suspension or by electrochemical deposition, as well as with immunosensors constructed using commercial AuNPs-modified SPCEs. The developed immunosensor was applied to the successful analysis of human serum from heart failure (HF) patients upon just a 10-times dilution as sample treatment.
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Affiliation(s)
- V Serafín
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain.
| | - R M Torrente-Rodríguez
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain.
| | - A González-Cortés
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
| | - P García de Frutos
- Department of Cell Death and Proliferation IIBB-CSIC, and IDIBAPS, Barcelona, Spain.
| | - M Sabaté
- Institute of Biomedical Research August Pi iSunyer (IDIBAPS) and The Cardiovascular Clinic Institute, Hospital Clínic de Barcelona, Spain.
| | - S Campuzano
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain.
| | - P Yáñez-Sedeño
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain.
| | - J M Pingarrón
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain; IMDEA Nanoscience, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain.
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45
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Peljo P, Manzanares JA, Girault HH. Variation of the Fermi level and the electrostatic force of a metallic nanoparticle upon colliding with an electrode. Chem Sci 2017; 8:4795-4803. [PMID: 28959401 PMCID: PMC5602143 DOI: 10.1039/c7sc00848a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/04/2017] [Indexed: 12/14/2022] Open
Abstract
When a metallic nanoparticle (NP) comes in close contact with an electrode, its Fermi level equilibrates with that of the electrode if their separation is less than the cut-off distance for electron tunnelling. In the absence of chemical reactions in solution, the charge on the metallic nanoparticle is constant outside this range before or after the collision. However, the double layer capacitances of both the electrode and the NP are influenced by each other, varying as the function of distance. Because the charge on the nanoparticle is constant, the outer potential of the metallic NP and hence its Fermi level varies as the capacitance changes. This effect is more pronounced for small particles (<10 nm) in diluted supporting electrolyte solutions, especially if the metallic nanoparticle and the electrode have different potentials of zero charge. Nanoparticles were found to be more electrochemically active in the vicinity of the electrode. For example, the outer potential of a positively-polarized 2 nm radius NP was predicted to decrease by 35 mV or 100 mV (depending on the electrostatic model used to describe the electric double layer), when the NP moved from an electrode at 1 V (vs. its pzc) to the bulk. The force between the equilibrated NP and the electrode is always repulsive when they have the same pzc. Otherwise there can be an attraction even when the NP and the electrode carry charges of the same sign, due to the redistibution of surface charge density at both the NP and electrode surface.
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Affiliation(s)
- Pekka Peljo
- Laboratoire d'Electrochimie Physique et Analytique (LEPA) , École Polytechnique Fédérale de Lausanne (EPFL) , Rue de l'Industrie 17 , CH-1951 Sion , Switzerland .
| | - José A Manzanares
- Department of Thermodynamics , Faculty of Physics , University of Valencia , c/Dr. Moliner, 50 , E-46100 Burjasot , Spain
| | - Hubert H Girault
- Laboratoire d'Electrochimie Physique et Analytique (LEPA) , École Polytechnique Fédérale de Lausanne (EPFL) , Rue de l'Industrie 17 , CH-1951 Sion , Switzerland .
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46
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Hill CM, Kim J, Bodappa N, Bard AJ. Electrochemical Nonadiabatic Electron Transfer via Tunneling to Solution Species through Thin Insulating Films. J Am Chem Soc 2017; 139:6114-6119. [DOI: 10.1021/jacs.6b12104] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Caleb M. Hill
- University of Texas at Austin, Austin, Texas 78705, United States
| | - Jiyeon Kim
- University of Texas at Austin, Austin, Texas 78705, United States
| | - Nataraju Bodappa
- University of Texas at Austin, Austin, Texas 78705, United States
| | - Allen J. Bard
- University of Texas at Austin, Austin, Texas 78705, United States
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47
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Krause KJ, Brings F, Schnitker J, Kätelhön E, Rinklin P, Mayer D, Compton RG, Lemay SG, Offenhäusser A, Wolfrum B. The Influence of Supporting Ions on the Electrochemical Detection of Individual Silver Nanoparticles: Understanding the Shape and Frequency of Current Transients in Nano-impacts. Chemistry 2017; 23:4638-4643. [DOI: 10.1002/chem.201605924] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Kay J. Krause
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology; Forschungszentrum Jülich; 52425 Jülich Germany
| | - Fabian Brings
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology; Forschungszentrum Jülich; 52425 Jülich Germany
| | - Jan Schnitker
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology; Forschungszentrum Jülich; 52425 Jülich Germany
| | - Enno Kätelhön
- Department of Chemistry; Physical and Theoretical Chemistry Laboratory; Oxford University, South Parks Road; Oxford OX1 3QZ UK
| | - Philipp Rinklin
- Neuroelectronics, MSB, Department of Electrical and Computer Engineering; Technical University of Munich (TUM); Boltzmannstr. 11 85748 Garching Germany
- Bernstein Center for Computational Neuroscience Munich; Germany
| | - Dirk Mayer
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology; Forschungszentrum Jülich; 52425 Jülich Germany
| | - Richard G. Compton
- Department of Chemistry; Physical and Theoretical Chemistry Laboratory; Oxford University, South Parks Road; Oxford OX1 3QZ UK
| | - Serge G. Lemay
- MESA+ Institute for Nanotechnology; University of Twente, PO Box 217; 7500 AE Enschede The Netherlands
| | - Andreas Offenhäusser
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology; Forschungszentrum Jülich; 52425 Jülich Germany
| | - Bernhard Wolfrum
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology; Forschungszentrum Jülich; 52425 Jülich Germany
- Neuroelectronics, MSB, Department of Electrical and Computer Engineering; Technical University of Munich (TUM); Boltzmannstr. 11 85748 Garching Germany
- Bernstein Center for Computational Neuroscience Munich; Germany
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48
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Zhou M, Yu Y, Hu K, Xin HL, Mirkin MV. Collisions of Ir Oxide Nanoparticles with Carbon Nanopipettes: Experiments with One Nanoparticle. Anal Chem 2017; 89:2880-2885. [DOI: 10.1021/acs.analchem.6b04140] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Min Zhou
- Department
of Chemistry and Biochemistry, Queens College—CUNY, Flushing, New York 11367, United States
| | - Yun Yu
- Department
of Chemistry and Biochemistry, Queens College—CUNY, Flushing, New York 11367, United States
- The Graduate Center, CUNY, New York, New York 10016, United States
| | - Keke Hu
- Department
of Chemistry and Biochemistry, Queens College—CUNY, Flushing, New York 11367, United States
- The Graduate Center, CUNY, New York, New York 10016, United States
| | - Huolin L. Xin
- Center
for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michael V. Mirkin
- Department
of Chemistry and Biochemistry, Queens College—CUNY, Flushing, New York 11367, United States
- The Graduate Center, CUNY, New York, New York 10016, United States
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49
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Meekins BH. Detection of single metal nanoparticle collision events in non-aqueous media. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp03042h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate detection of single metal nanoparticle collisions in non-aqueous media and discuss challenges revealed by results.
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Affiliation(s)
- Benjamin H. Meekins
- Department of Chemical Engineering
- The University of South Carolina
- Columbia
- USA
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50
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Ma W, Ma H, Chen JF, Peng YY, Yang ZY, Wang HF, Ying YL, Tian H, Long YT. Tracking motion trajectories of individual nanoparticles using time-resolved current traces. Chem Sci 2016; 8:1854-1861. [PMID: 28553475 PMCID: PMC5424808 DOI: 10.1039/c6sc04582k] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/11/2016] [Indexed: 12/24/2022] Open
Abstract
We report experiments and simulations demonstrating that multiple distinct motion trajectories of individual nanoparticles can be discerned from time-resolved current traces.
Single nanoparticle (NP) electrochemical measurements are widely described, both theoretically and experimentally, as they enable visualization of the electrochemical signal of a single NP that is masked in ensemble measurements. However, investigating the behavior of individual NPs using electrochemical signals remains a significant challenge. Here we report experiments and simulations demonstrating that multiple distinct motion trajectories could be discerned from time-resolved current traces by dynamic Monte Carlo simulations. We show that continuous monitoring and quantification of electrochemical oxidation of individual AgNPs using a low-noise electrochemical measurement platform produce significantly distinguished current traces due to the size-dependent motions of AgNPs. Our findings offer a view of the electrochemical signals of individual NPs that are largely different from that in the literature, and underscore the significance of motion behaviors in single NP electrochemistry.
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Affiliation(s)
- Wei Ma
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
| | - Hui Ma
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
| | - Jian-Fu Chen
- State Key Laboratory of Chemical Engineering Centre for Computational Chemistry , Research Institute of Industrial Catalysis , East China University of Science and Technology , Shanghai , P. R. China
| | - Yue-Yi Peng
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
| | - Zhe-Yao Yang
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
| | - Hai-Feng Wang
- State Key Laboratory of Chemical Engineering Centre for Computational Chemistry , Research Institute of Industrial Catalysis , East China University of Science and Technology , Shanghai , P. R. China
| | - Yi-Lun Ying
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
| | - He Tian
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials , Institute of Fine Chemicals , East China University of Science and Technology , Shanghai , P. R. China . ;
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