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Scanning Electrochemical Microscopy Secm As A Probe Of Interfacial Photochemical And Electrochemical Processes
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Book Synopsis Scanning Electrochemical Microscopy (SECM) as a Probe of Interfacial Photochemical and Electrochemical Processes by :
Download or read book Scanning Electrochemical Microscopy (SECM) as a Probe of Interfacial Photochemical and Electrochemical Processes written by and published by . This book was released on 2008 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scanning Electrochemical Microscopy by : Allen J. Bard
Download or read book Scanning Electrochemical Microscopy written by Allen J. Bard and published by CRC Press. This book was released on 2022-07-29 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of its simplicity of use and quantitative results, Scanning Electrochemical Microscopy (SECM) has become an indispensable tool for the study of surface reactivity. The fast expansion of the SECM field over several years has been fueled by the introduction of new probes, commercially available instrumentation, and new practical applications. Scanning Electrochemical Microscopy, Third Edition offers essential background and in-depth overviews of specific applications in self-contained chapters. The vitality and growing popularity of SECM over the past 30+ years have largely been determined by its versatility and capability to remain useful in the changing scientific and technological environments. New applications reported during the last decade reflect significant current activity in biomedical and energy-related research. This thoroughly updated edition provides up-to-date comprehensive reviews of different aspects of SECM. New chapters by renowned professionals in the field cover recent advances in different areas of SECM including nanoSECM, surface reactions and films, batteries, and fuel cells. Expanded coverage of electrocatalysis and surface interrogation as well as photoelectrochemistry and photoelectrocatalysis are also provided. Useful for a broad range of interdisciplinary research—from biological systems to nanopatterning—this book is invaluable to all interested in learning and applying SECM.
Book Synopsis Scanning Electrochemical Microscopy, Second Edition by : Allen J. Bard
Download or read book Scanning Electrochemical Microscopy, Second Edition written by Allen J. Bard and published by CRC Press. This book was released on 2012-04-16 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of its simplicity of use and quantitative results, Scanning Electrochemical Microscopy (SECM) has become an indispensable tool for the study of surface reactivity. The fast expansion of the SECM field during the last several years has been fueled by the introduction of new probes, commercially available instrumentation, and new practical applications. Scanning Electrochemical Microscopy, Second Edition offers essential background and in-depth overviews of specific applications in self-contained chapters. Recent methodological advances have greatly increased the capacity of SECM to characterize interfaces at the nanoscale and to obtain molecular-level chemical information. This thoroughly updated edition retains original chapters describing the principles of SECM measurements, instrumentation, preparation of SECM probes, imaging methodologies, and theory and offers: New chapters on studies of single biological cells, corrosion, electrocatalysis, and hybrid techniques Descriptions of recent advances of SECM in several areas of current interest: biotechnological applications, nanofabrication and surface patterning, and molecular transport across films and membranes Discussion of the ongoing shift from micrometer-scale experiments to the nanoscale Useful for a broad range of interdisciplinary research—from biological systems to probing reactions at the liquid–liquid interface—this book is invaluable to all interested in learning and applying SECM.
Book Synopsis Probe Effects During Concentration Determination in Scanning Electrochemical Microscopy by : Alex Mirabal
Download or read book Probe Effects During Concentration Determination in Scanning Electrochemical Microscopy written by Alex Mirabal and published by . This book was released on 2022 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient, sustainable chemical reactions will play a large role in addressing many growing issues, including alternative energy production, greenhouse gas conversion, and pharmaceuticals. Electrochemical reactions are attractive due to their relatively mild reaction conditions and direct use of electricity. The understanding and design of the local liquid-solid interface will guide future progress in electrocatalytic reactions.Over time, nature has evolved many highly efficient reactions through enzymatic reactions. These long-studied catalysts provide complex reaction environments that: 1) enhance interaction with reactants, 2) protect intermediates from side reactions, 3) increase the rates of reactions, and 4) selectively react to a specific product. The overarching lesson to be learned is that the local reaction environment plays a large role in the catalyst's reactivity, selectivity, and efficiency. One way to characterize the local environment is through scanning electrochemical microscopy (SECM), in which a small electrochemical probe is rastered over an interface. A quantitative correlation of the probe response to concentration provides a direct measurement of the local environment.The presence of the SECM probe itself can induce changes in the local environment. Comparing the changed local environment (in situ) to what it would be without the probe present (operando), shows large differences of up to 120% under specific operating conditions. A few physical parameters such as the surface site geometry are shown to have an impact on how significant the probe effects are. Additional parameters such as the tip geometry and tip-surface separation are also to have an impact.A finite element method (FEM) simulation informed by experiments is used to examine the above-mentioned tip effects. It is found that fitting responses to other frequently used electrochemical measurements, such as approach curves and CVs, to parameterize the model appropriately describes experimental SECM results. We first apply this method to study platinum nanoparticles, where a ~50 nm resolution is the highest resolution to our knowledge for AFM-SECM. Through statistical analysis of the surface, an isolated nanoparticle SECM response is correlated with a concentration profile. It is found that the concentration profile has minimal probe effects due to the use of a conical electrode.Applying a similar approach, we also study the probe effects in pH detection during hydrogen evolution and CO2 reduction. Where we match experimental results to parameterize the system. It shown that there is a pH difference of up to ~7 pH units underneath the probe due to hindered diffusion. However, even with these large differences, the probes are still able to reflect the trends seen without the probe present. Moreover, it is shown that the physical parameters have correlated responses, indicating that hindered diffusion is controlled by the insulation radius and tip-surface separation.Finally, the importance of the analyte is discussed with regard to its interaction with the tip. In addition to the concentration impact on the response signal, the compatibility with the tip need be considered. Degradation of the tip and/or the redox couple of choice will detrimentally affect the ability to examine the local interface. We show that, of the redox couples examined, ferrocene-based compounds appear to best satisfy the most crucial factors of stability and mild redox potentials.Overall, this work studies and removes the impact of the probe for local concentration detection using SECM. This work acts as a guide to quantitatively study the local environment of electrocatalyzed reactions. This is realized through a combined experimental-FEM approach in which the simulation is informed by experiments such that it's representative of the experimental environment.
Book Synopsis Investigation of Electron Transfer Processes and Surface Modifications with Scanning Electrochemical Microscopy (SECM) by : Marisa Sheffer
Download or read book Investigation of Electron Transfer Processes and Surface Modifications with Scanning Electrochemical Microscopy (SECM) written by Marisa Sheffer and published by . This book was released on 2008 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Application of Electrochemical Scanning Probe Microscopy Techniques for Studying Interfacial Processes by : Sophie L. Kinnear
Download or read book Development and Application of Electrochemical Scanning Probe Microscopy Techniques for Studying Interfacial Processes written by Sophie L. Kinnear and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scanning Electrochemical Microscopy (SECM) with Amalgam Microelectrodes by : Douglas Alexander Rudolph
Download or read book Scanning Electrochemical Microscopy (SECM) with Amalgam Microelectrodes written by Douglas Alexander Rudolph and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on in-situ studies at the solid-liquid interface by combining scanning electrochemical microscopy (SECM) with gold and platinum mercury amalgam microelectrodes. It is shown that stripping voltammetry experiments at imaging amalgam microelectrodes provide laterally resolved insight on the electrochemistry of biogeochemically relevant processes. SECM provides information on electroactive surface processes with high spatial resolution, and offers the opportunity to study heterogeneous electron-transfer reactions. Thereby, chemical species of interest, such as metal ions, can be electrochemically detected at mercury amalgam electrodes. Platinum and gold mercury amalgam microelectrodes were developed for the detection of biogeochemically relevant analytes such as manganese and iron during SECM imaging experiments at the mineral/water interface establishing the fundamental basis of SECM imaging with amalgam microelectrodes. SECM experiments were performed for the quantitative determination of Mn2+ during the dissolution of microstructured manganese carbonate (rhodochrosite) precipitates at mildly acidic conditions. SECM images along with spatially resolved quantitative data on the Mn2+ concentration were obtained. This measurement concept was then extended to the investigation of the corrosion behavior of diamond-like carbon (DLC) protected zinc selenide (ZnSe) waveguides applied in mid-infrared attenuated total reflectance spectroscopy at strongly oxidizing conditions. The corrosion behavior of DLC coated and uncoated ZnSe crystals was studied obtaining laterally resolved information on the oxidative degradation of ZnSe at defects of the DLC layer utilizing SECM in combination with square wave anodic stripping voltammetry (SWASV) at gold amalgam microelectrodes. Thereby, insight on the corrosion behavior of ZnSe and concentration profiles of Zn2+ at oxidizing conditions was obtained. These results corroborate the utility of SECM imaging with amalgam microelectrodes for addressing relevant analytical questions. Finally, the developed amalgam microelectrodes were applied for SECM studies of iron-reducing proteins separated from Shewanella microbes in native polyacrylamide gels. After calibration of Pt/Hg microelectrodes in bulk solution for the targeted analytes (iron and sulfur species), SECM approach curves recorded above the native gel enabled positioning of the amalgam electrode in close proximity above protein bands with suspected iron-reducing activity. This technique enabled the (semi)quantitative determination of the anaerobic respiratory activity associated with microbial proteins/protein complexes responsible for the reductive dissolution of manganese and iron oxides above microbial protein bands separated in a native gel matrix.
Book Synopsis Localized In-situ Methods for Investigating Eletrochemical Interfaces by : S. Ray Taylor
Download or read book Localized In-situ Methods for Investigating Eletrochemical Interfaces written by S. Ray Taylor and published by . This book was released on 2000 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 31 papers discuss various methods for analyzing electrochemical interfaces to find and identify local phenomena such as corrosion, electrocrystallization, electrocatalysis, and membrane-based separations that might affect the electrochemical process. The methods include atomic force and scanning tunneling microscopy, optical methods, scanning electrochemical microscopy, local impedance and current, and scanning Kelvin probe. c. Book News Inc.
Book Synopsis Development of Multi-dimensional Methods for Scanning Electrochemical Microscopy (SECM) by : Mario Alberto Alpuche Avilés
Download or read book Development of Multi-dimensional Methods for Scanning Electrochemical Microscopy (SECM) written by Mario Alberto Alpuche Avilés and published by . This book was released on 2005 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scanning Electrochemical Microscopy by : Allen J. Bard
Download or read book Scanning Electrochemical Microscopy written by Allen J. Bard and published by CRC Press. This book was released on 2022-07-29 with total page 619 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of its simplicity of use and quantitative results, Scanning Electrochemical Microscopy (SECM) has become an indispensable tool for the study of surface reactivity. The fast expansion of the SECM field over several years has been fueled by the introduction of new probes, commercially available instrumentation, and new practical applications. Scanning Electrochemical Microscopy, Third Edition offers essential background and in-depth overviews of specific applications in self-contained chapters. The vitality and growing popularity of SECM over the past 30+ years have largely been determined by its versatility and capability to remain useful in the changing scientific and technological environments. New applications reported during the last decade reflect significant current activity in biomedical and energy-related research. This thoroughly updated edition provides up-to-date comprehensive reviews of different aspects of SECM. New chapters by renowned professionals in the field cover recent advances in different areas of SECM including nanoSECM, surface reactions and films, batteries, and fuel cells. Expanded coverage of electrocatalysis and surface interrogation as well as photoelectrochemistry and photoelectrocatalysis are also provided. Useful for a broad range of interdisciplinary research—from biological systems to nanopatterning—this book is invaluable to all interested in learning and applying SECM.
Book Synopsis The Use of Scanning Electrochemical Microscopy for the Detection and Quantification of Adsorbed Intermediates at Electrodes by : Joaquin Rodriguez Lopez
Download or read book The Use of Scanning Electrochemical Microscopy for the Detection and Quantification of Adsorbed Intermediates at Electrodes written by Joaquin Rodriguez Lopez and published by . This book was released on 2010 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning electrochemical microscopy (SECM) was used for the study and characterization of catalytic and electrocatalytic processes occurring at electrodes. The Surface Interrogation mode (SI-SECM) was introduced for the detection and quantification of adsorbed intermediates and products of catalyzed chemical and electrochemical reactions at noble metals (Pt, Au). In SI-SECM two micro electrodes (i.e. an SECM tip and a substrate of the desired material) are aligned concentrically at a micrometric distance where SECM feedback effects operate. A contrast mechanism based on feedback effects allows for the detection of reactive adsorbed intermediates at the substrate: the SECM tip generates a reactive homogeneous species that "micro-titrates" the substrate adsorbates to yield an electrochemical signal that contains information about the amount of intermediate and about its kinetics of reaction with the redox mediator. The technique was used for the study of the reactivity of three model small adsorbates: 1) the reactivity of adsorbed oxygen on Au and Pt with a reducing mediator was explored and suggested the detection of "incipient oxides" at these surfaces; kinetic parameters of the reactivity of Pt oxides with mediators were obtained, fit to theory and used to explain observations about the electrocatalytic behavior of Pt under anodizing conditions; 2) the reactivity of oxidizing mediators with adsorbed hydrogen on Pt was studied and showed the cation of N, N, N, N-tetramethyl-p-phenylenediamine (TMPD) to be a successful interrogation agent, the detection of hydrogen generated by the decomposition of formic acid on Pt at open circuit was investigated; 3) electrogenerated bromine was used to catalytically interrogate carbon monoxide at Pt, this reaction was previously unreported. The mentioned applications of SECM were validated through the use of digital simulations of diffusion in the complex SECM geometry through flexible commercial finite element method software.
Book Synopsis Electrochemical Analysis and Scanning Electrochemical Microscopy Investigations of Photosystem I by : Gongping Chen
Download or read book Electrochemical Analysis and Scanning Electrochemical Microscopy Investigations of Photosystem I written by Gongping Chen and published by . This book was released on 2013 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Applications of Scanning Electrochemical Microscopy (SECM). by : Renkang Zhu
Download or read book Development and Applications of Scanning Electrochemical Microscopy (SECM). written by Renkang Zhu and published by . This book was released on 2007 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrochemical Scanning Probe Methods for the Investigation of Passivating Surface Films and Permeable Media by : Nicholas Payne
Download or read book Electrochemical Scanning Probe Methods for the Investigation of Passivating Surface Films and Permeable Media written by Nicholas Payne and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Electrochemical scanning probe microscopy has exploded in popularity since the late 1980's and widespread adoption for routine materials analysis is swiftly become a reality. In practice, for any technique, widening the material scope, particularly for industrially-relevant materials that bring much greater levels of heterogeneity and complexity in structure, is accompanied by new instrument and theory development.This thesis demonstrates that electrochemical microscopy is capable of quantitative analysis of substrate permeability - a very common but challenging to acquire property in industrially-relevant composite electrodes and corroding materials. Measurements are performed on permeable materials in situ and can thus account for material swelling and active growth of surface films as well as identify electroactive nanoscale defects. Specifically we explore each of the major electrochemical microscopy methods, scanning electrochemical microscopy (SECM), scanning ion conductance microscopy (SICM) and scanning electrochemical cell microscopy (SECCM) and through a combination of experiment and simulation, we demonstrate that mass transport within permeable surface layers can be predicted and therefore isolated from the electrochemical reactivity of the substrate.With SECM, we derived and validated analytical equations that allow rapid determination of film porosity through non-linear curve fitting of routine approach curve measurements. Furthermore, we validated the possible implementations of the equations based on the morphology of the surface film and identified any limitations for routine use. For SICM, we demonstrated that the critical parameter, ionic conductivity within a permeable layer has a significant impact on routine imaging but can also be quantified with approach curves. We present for the first time, direct measurement of ionic conductivity within a permeable film with SICM using a lithium-ion battery cathode film. Finally, with SECCM we took advantage of its well-defined spatial resolution to resolve and assess the size of nanoscale defects in a polymeric thin film. We also introduced the density plot as a new analysis method for SECCM that consolidated the large data sets obtained by experiment and facilitates correlation with simulation"--
Book Synopsis Studing Charge Transfer Processes by the Scanning Electrochemical Microscope (Secm) by : Yoram Selzer
Download or read book Studing Charge Transfer Processes by the Scanning Electrochemical Microscope (Secm) written by Yoram Selzer and published by . This book was released on 1999 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Semiconductor Electrodes by : Harry O. Finklea
Download or read book Semiconductor Electrodes written by Harry O. Finklea and published by Elsevier Publishing Company. This book was released on 1988 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductors have been studied as electrodes in electrochemical systems since the mid-1950's. However, it was not until the 1970's that the search for alternative energy sources, especially solar energy, led to an enormous expansion in semiconductor electrode research. One attractive option for solar energy conversion is the semiconductor liquid-junction solar cell, which can be designed to produce either electrical power or fuel such as hydrogen. Consequently the number of papers published concerning semiconductor electrodes has rapidly increased. Previous books have principally focused on the underlying theory (largely from solid state physics) and principles of operation of all semiconductor electrodes. It therefore seemed both useful and appropriate to review the field with the intention of collating information for each semiconductor or family of semiconductors, with contributions from authors who are all recognized experts in their field. Each chapter is devoted to critically assessing the recent literature on a particular semiconductor or family of semiconductors.
Book Synopsis Development of Novel Probes for Combined Scanning Electrochemical - Atomic Force Microscopy (SECM-AFM) by :
Download or read book Development of Novel Probes for Combined Scanning Electrochemical - Atomic Force Microscopy (SECM-AFM) written by and published by . This book was released on 2005 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
