Download or read book Electrochemical and spectroscopic techniques combined in situ for the study of artificial and biological redox systems at a molecular level written by Daniela D. Schlereth and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectroelectrochemistry written by Wolfgang Kaim and published by Royal Society of Chemistry. This book was released on 2008 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guidebook illustrating the applications of spectroelectrochemistry to the understanding of redox reactions through identification of their intermediaries and products.
Download or read book Redox Chemistry and Interfacial Behavior of Biological Molecules written by Glenn Dryhurst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers in this book were presented at the Third International Symposium on Redox Mechanisms and Interfacial Properties of Molecules of Biological Importance held in Honolulu, Hawaii between October 19-23, 1987. This Symposium was held as part of the 172nd Meeting of The Electrochemical Society which was cosponsored by The Electrochemical Society of Japan with the cooperation of The Japan Society of Applied Physics. The aim of the Symposium was to bring together a group of electrochemists and bio-medical scientists with interests in electrochemistry from around the world to present their most current research results and/or to present up-to-date reviews of current areas of research activity. It is quite clear from the diversity of topics covered in the various papers that electrochemistry and electrochemical techniques and principles have much to contribute to our under standing of many important biochemical phenomena. For example, electrochemical studies are providing important insights into the redox properties of biomolecules ranging from relatively small organic molecules such as indoleamine neurotransmitters to very large organic/organometallic molecules which include various redox enzymes or model enzyme systems. Many of the most powerful analytical techniques are now being coupled to electrodes to monitor potential-controlled behaviors of bio logical molecules at charged interfaces. Electrochemical techniques are now being developed which permit extraordinarily small electrodes to be inserted into single cells to monitor electroactive biomolecules. Other microelectrodes are being employed to control cell growth and to manipulate single cells.
Download or read book Electrochemical and Spectroscopic Studies of Redox Reactions with Relevance to Environmental Sciences and Energy Conversion written by Adriel Jebin Jacob Jebaraj and published by . This book was released on 2015 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochemical and in situ spectroscopic methods were used to examine the redox properties of hydroxylamine, NH2OH, on polycrystalline Au electrodes in aqueous electrolytes. It was concluded from these studies that NH2OH oxidation proceeds via a complex electrochemical-chemical mechanism involving initial formation of nitrite, which then reacts with NH2OH to yield electrochemically inert species. Complementary rotating disk electrode studies identified Au(100) as having much higher activity than the two other low index faces. Also examined are Pd- and Pt- modified Au surfaces for hydroxylamine oxidation by in situ vibrational spectroscopic techniques including, surface enhanced Raman scattering, SERS, surface enhanced infrared absorption, SEIRAS, and IRAS. This information together from data reported in the literature was used to design test a rationally assembled electrocatalytic interface involving both Au and Pd surfaces in Cd2+ containing solutions capable of reducing nitrate, NO3-, beyond the NO2- step in a stepwise fashion. As evidenced by the data collected, Cd UPD on Au promotes the reduction of NO3-, to yield NO2-, which is in turn reduced by Pd, generating other species. In other studies, normalized differential reflectance, Delta R/R, measurements of quasi perfect Pt(111) facets were carried out in aqueous electrolytes. Excellent quantitative agreement with the experimental data was found using a theoretical model that assumes that Delta R/R arises from linear contributions arising from areas covered with water and from various adsorbates modulated in each case by the applied potential. Finally, a chronoamperometric method was developed that allows correlations to be established between the rates of the oxygen reduction reaction, ORR, on the Pt disk of a rotating Pt-ring Pt-disk electrode, the coverage of adsorbed halides, ThetaX-, X- = Cl- or Br-, the amount of solution phase hydrogen peroxide, H2O2, generated at the disk and the applied potential. Analysis of the data collected revealed that the fraction of H2O2 generated at the disk during oxygen reduction as measured by the currents on the ring, reaches a maximum for potentials in the range 0.4 = Eads= 0.5 V vs RHE for all values of ThetaCl- and ThetaBr- examined.
Download or read book Handbook of Electrochemistry written by Cynthia G. Zoski and published by Elsevier. This book was released on 2007-02-07 with total page 935 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrochemistry plays a key role in a broad range of research and applied areas including the exploration of new inorganic and organic compounds, biochemical and biological systems, corrosion, energy applications involving fuel cells and solar cells, and nanoscale investigations. The Handbook of Electrochemistry serves as a source of electrochemical information, providing details of experimental considerations, representative calculations, and illustrations of the possibilities available in electrochemical experimentation. The book is divided into five parts: Fundamentals, Laboratory Practical, Techniques, Applications, and Data. The first section covers the fundamentals of electrochemistry which are essential for everyone working in the field, presenting an overview of electrochemical conventions, terminology, fundamental equations, and electrochemical cells, experiments, literature, textbooks, and specialized books. Part 2 focuses on the different laboratory aspects of electrochemistry which is followed by a review of the various electrochemical techniques ranging from classical experiments to scanning electrochemical microscopy, electrogenerated chemiluminesence and spectroelectrochemistry. Applications of electrochemistry include electrode kinetic determinations, unique aspects of metal deposition, and electrochemistry in small places and at novel interfaces and these are detailed in Part 4. The remaining three chapters provide useful electrochemical data and information involving electrode potentials, diffusion coefficients, and methods used in measuring liquid junction potentials. * serves as a source of electrochemical information * includes useful electrochemical data and information involving electrode potentials, diffusion coefficients, and methods used in measuring liquid junction potentials * reviews electrochemical techniques (incl. scanning electrochemical microscopy, electrogenerated chemiluminesence and spectroelectrochemistry)
Download or read book Application of In situ Spectroscopic Techniques to the Study of Electrochemical Processes written by Marnita Elizabeth Sandifer and published by . This book was released on 1995 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Visualizing and Controlling Redox Processes at the Single Molecule particle Level written by Robert Godin and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis describes our advances in visualizing, monitoring and controlling oxidation-reduction (redox) processes at the single molecule level. Methods center on the use of single molecule fluorescence spectroscopy to understand two distinct themes. The two themes, inspired by biological and material systems, are differentiated by the study of chemical or electrochemical redox reactions. Fluorescence quenching via a photoinduced electron transfer (PeT) mechanism is at the heart of the fluorescence-based single molecule/particle detection of individual analytes that undergo changes in redox states in both cases. Our contributions to the study of heterogeneous single molecule chemical reactions spans the chemical oxidation process of lipid peroxidation to optoelectronic systems under electrochemical control.We initially explored the use of lipophilic fluorogenic antioxidants to monitor the process of lipid peroxidation. We determined that oxidation taking place in liposomes is heterogeneous in nature, with large liposome-to-liposome variations in the extent of oxidation. We next investigated the localisation and retention of dyes in liposomes under the highly dilute conditions required for single molecule experiments. We showed that careful consideration of the dye or probe used in single molecule experiments is warranted. We developed a rapid method based on fluorescence correlation spectroscopy (FCS) to determine if a dye or probe of choice is suitable for single molecule experiments in lipid membranes. The influence on the lipid partitioning of the adduct between an analyte of interest and a chemically-activated probe was also revealed using this method.We then applied single molecule spectroelectrochemistry (SMS-EC) techniques to answer key questions regarding heterogeneity in systems of great interest to material scientists. The fluorescence response of individual nanoparticles to applied biases shed light on the conformation and packing of polymer chains and the resulting effect on ion migration. We introduced two-color imaging to SMS-EC for the first time, which allowed us to discriminate between the electrochemical properties of deaggregated and aggregated polymer segments within individual nanoparticles. We subsequently explored the interfacial charge transfer dynamics that take place in dye-sensitized solar cell prototypes. In a SMS-EC setup, the electron density in a semiconductor was controlled by applying an electrochemical potential, and the changes in the rates of interfacial charge transfers was inferred by monitoring the fluorescence intensity. By monitoring the rate of photobleaching in addition to the fluorescence intensity of two sensitizer dyes with distinct excited state potentials, we learned how the rates of interfacial charge transfers change with applied biases and which factors drive these changes.We additionally showcased SMS-EC as a new tool to optically determine the concentration profile of electrochemically-generated products. Once more taking advantage of the advancements in fluorogenic antioxidants, we observed individual reaction products under electrochemical control. We were able to experimentally verify the mass transport process that occurs near a planar electrode surface. We extended the use of SMS-EC to study small molecules in organic solvents, increasing the scope of chemical reactions that can be studied at the single molecule level.We conclude this thesis with final remarks and an outlook for future research. The progress made in studying heterogeneous redox processes at the single molecule will spur new research avenues. We envisage that SMS-EC and other single molecule techniques will gain significant traction as important tools in contemporary chemical research." --
Download or read book Bioelectrochemistry written by Richard C. Alkire and published by John Wiley & Sons. This book was released on 2013-09-25 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioelectrochemistry is a fast growing field at the interface between electrochemistry and other sciences such as biochemistry, analytical chemistry and medicinal chemistry. In the recent years, the methods and the understanding of the fundamentals have seen significant progress, which has led to rapid development in the field. Here, the expert editors have carefully selected contributions to best reflect the latest developments in this hot and rapidly growing interdisciplinary topic. The resulting excellent and timely overview of this multifaceted field covers recent methodological advances, as well as a range of new applications for analytical detection, drug screening, tumor therapy, and for energy conversion in biofuel cells. This book is a must-have for all Electrochemists, Biochemists, Analytical Chemists, and Medicinal Chemists.
Download or read book Electrochemical Biosensors written by Serge Cosnier and published by CRC Press. This book was released on 2015-01-26 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since four decades, rapid detection and monitoring in clinical and food diagnostics and in environmental and biodefense have paved the way for the elaboration of electrochemical biosensors. Thanks to their adaptability, ease of use in relatively complex samples, and their portability, electrochemical biosensors now are one of the mainstays of analy
Download or read book In situ Spectroscopic Studies of Adsorption at the Electrode and Electrocatalysis written by Shi-Gang Sun and published by Elsevier. This book was released on 2011-08-11 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-Situ Spectroscopic Studies of Adsorption at the Electrode and Electrocatalysis is a new reference on in-situ spectroscopic techniques/applications, fundamentals of electrocatalysis at molecule level, and progresses within electrochemical surface science. Presenting both essential background knowledge at graduate level and original research within the fields of spectroscopy, electrochemistry, and surface science. Featuring 15 chapters by prominent worldwide scholars, based on their recent progress in different aspects of in-situ spectroscopy studies, this book will appeal to a wide audience of scientists. In summary this book is highly suitable for graduates learning basic concepts and advanced applications of in-situ spectroscopy, electrocatalysis and electrode adsorptions. * Written by the most active scientists in the fields of spectroscopy, electrochemistry and surface science* Essential background knowledge for graduate students* A modern reference of cutting-edge scientific research
Download or read book Atomic Scale Modelling of Electrochemical Systems written by Marko M. Melander and published by John Wiley & Sons. This book was released on 2021-09-09 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic-Scale Modelling of Electrochemical Systems A comprehensive overview of atomistic computational electrochemistry, discussing methods, implementation, and state-of-the-art applications in the field The first book to review state-of-the-art computational and theoretical methods for modelling, understanding, and predicting the properties of electrochemical interfaces. This book presents a detailed description of the current methods, their background, limitations, and use for addressing the electrochemical interface and reactions. It also highlights several applications in electrocatalysis and electrochemistry. Atomic-Scale Modelling of Electrochemical Systems discusses different ways of including the electrode potential in the computational setup and fixed potential calculations within the framework of grand canonical density functional theory. It examines classical and quantum mechanical models for the solid-liquid interface and formation of an electrochemical double-layer using molecular dynamics and/or continuum descriptions. A thermodynamic description of the interface and reactions taking place at the interface as a function of the electrode potential is provided, as are novel ways to describe rates of heterogeneous electron transfer, proton-coupled electron transfer, and other electrocatalytic reactions. The book also covers multiscale modelling, where atomic level information is used for predicting experimental observables to enable direct comparison with experiments, to rationalize experimental results, and to predict the following electrochemical performance. Uniquely explains how to understand, predict, and optimize the properties and reactivity of electrochemical interfaces starting from the atomic scale Uses an engaging “tutorial style” presentation, highlighting a solid physicochemical background, computational implementation, and applications for different methods, including merits and limitations Bridges the gap between experimental electrochemistry and computational atomistic modelling Written by a team of experts within the field of computational electrochemistry and the wider computational condensed matter community, this book serves as an introduction to the subject for readers entering the field of atom-level electrochemical modeling, while also serving as an invaluable reference for advanced practitioners already working in the field.
Download or read book Redox Polymers for Energy and Nanomedicine written by Nerea Casado and published by Royal Society of Chemistry. This book was released on 2020-10-20 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: Redox Polymers for Energy and Nanomedicine highlights trends in the chemistry, characterization and application of polymers with redox properties.
Download or read book Nanobiosensors written by Alexandru Grumezescu and published by Academic Press. This book was released on 2016-09-28 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanobiosensors: Nanotechnology in the Agri-Food Industry, Volume 8, provides the latest information on the increasing demand for robust, rapid, inexpensive, and safe alternative technologies that monitor, test, and detect harmful or potentially dangerous foods. Due to their high sensitivity and selectivity, nanobiosensors have attracted attention for their use in monitoring not only biological contaminants in food, but also potential chemical and physical hazards. This book offers a broad overview regarding the current progress made in the field of nanosensors, including cutting-edge technological progress and the impact of these devices on the food industry. Special attention is given to the detection of microbial contaminants and harmful metabolotes, such as toxins and hormones, which have a great impact on both humans and animal health and feed. Includes the most up-to-date information on nanoparticles based biosensors and quantum dots for biological detection Provides application methods and techniques for research analysis for bacteriological detection and food testing Presents studies using analytical tools to improve food safety and quality analysis
Download or read book Liquid Cell Electron Microscopy written by Frances M. Ross and published by Cambridge University Press. This book was released on 2017 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2.6.2 Electrodes for Electrochemistry
Download or read book Electrochemical Impedance Spectroscopy written by Mark E. Orazem and published by John Wiley & Sons. This book was released on 2011-10-13 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using electrochemical impedance spectroscopy in a broad range of applications This book provides the background and training suitable for application of impedance spectroscopy to varied applications, such as corrosion, biomedical devices, semiconductors and solid-state devices, sensors, batteries, fuel cells, electrochemical capacitors, dielectric measurements, coatings, electrochromic materials, analytical chemistry, and imaging. The emphasis is on generally applicable fundamentals rather than on detailed treatment of applications. With numerous illustrative examples showing how these principles are applied to common impedance problems, Electrochemical Impedance Spectroscopy is ideal either for course study or for independent self-study, covering: Essential background, including complex variables, differential equations, statistics, electrical circuits, electrochemistry, and instrumentation Experimental techniques, including methods used to measure impedance and other transfer functions Process models, demonstrating how deterministic models of impedance response can be developed from physical and kinetic descriptions Interpretation strategies, describing methods of interpretating of impedance data, ranging from graphical methods to complex nonlinear regression Error structure, providing a conceptual understanding of stochastic, bias, and fitting errors in frequency-domain measurements An overview that provides a philosophy for electrochemical impedance spectroscopy that integrates experimental observation, model development, and error analysis This is an excellent textbook for graduate students in electrochemistry, materials science, and chemical engineering. It's also a great self-study guide and reference for scientists and engineers who work with electrochemistry, corrosion, and electrochemical technology, including those in the biomedical field, and for users and vendors of impedance-measuring instrumentation.
Download or read book Analytical Electrochemistry written by Joseph Wang and published by John Wiley & Sons. This book was released on 2004-03-24 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The critically acclaimed guide to the principles, techniques, and instruments of electroanalytical chemistry-now expanded and revised Joseph Wang, internationally renowned authority on electroanalytical techniques, thoroughly revises his acclaimed book to reflect the rapid growth the field has experienced in recent years. He substantially expands the theoretical discussion while providing comprehensive coverage of the latest advances through late 1999, introducing such exciting new topics as self-assembled monolayers, DNA biosensors, lab-on-a-chip, detection for capillary electrophoresis, single molecule detection, and sol-gel surface modification. Along with numerous references from the current literature and new worked-out examples, Analytical Electrochemistry, Second Edition offers clear, reader-friendly explanations of the fundamental principles of electrochemical processes as well as important insight into the potential of electroanalysis for problem solving in a wide range of fields, from clinical diagnostics to environmental science. Key topics include: The basics of electrode reactions and the structure of the interfacial region Tools for elucidating electrode reactions and high-resolution surface characterization An overview of finite-current controlled potential techniques Electrochemical instrumentation and electrode materials Principles of potentiometric measurements and ion-selective electrodes Chemical sensors, including biosensors, gas sensors, solid-state devices, and sensor arrays
Download or read book Label Free Biosensing written by Michael J. Schöning and published by Springer. This book was released on 2018-07-20 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume summarizes the state-of-the-art technologies, key advances and future trends in the field of label-free biosensing. It provides detailed insights into the different types of solid-state, label-free biosensors, their underlying transducer principles, advanced materials utilized, device-fabrication techniques and various applications. The book offers graduate students, academic researchers, and industry professionals a comprehensive source of information on all facets of label-free biosensing and the future trends in this flourishing field. Highlights of the subjects covered include label-free biosensing with: · semiconductor field-effect devices such as nanomaterial-modified capacitive electrolyte-insulator-semiconductor structures, silicon nanowire transistors, III-nitride semiconductor devices and light-addressable potentiometric sensors · impedimetric biosensors using planar and 3D electrodes · nanocavity and solid-state nanopore devices · carbon nanotube and graphene/graphene oxide biosensors · electrochemical biosensors using molecularly imprinted polymers · biomimetic sensors based on acoustic signal transduction · enzyme logic systems and digital biosensors based on the biocomputing concept · heat-transfer as a novel transducer principle · ultrasensitive surface plasmon resonance biosensors · magnetic biosensors and magnetic imaging devices
