Interfacial Electrochemical Studies of Adsorbates on Polycrystalline and Single Crystal Electrodes PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Interfacial Electrochemical Studies of Adsorbates on Polycrystalline and Single Crystal Electrodes PDF full book. Access full book title Interfacial Electrochemical Studies of Adsorbates on Polycrystalline and Single Crystal Electrodes by Gary Lawrence Borges. Download full books in PDF and EPUB format.
Author: Gary Lawrence Borges
Publisher:
ISBN:
Category : Electrochemistry
Languages : en
Pages : 132
Get Book Here
Book Description
Author: Gary Lawrence Borges
Publisher:
ISBN:
Category : Electrochemistry
Languages : en
Pages : 132
Get Book Here
Book Description
Author: Andrzej Wieckowski
Publisher: Routledge
ISBN: 1351437569
Category : Science
Languages : en
Pages : 1008
Get Book Here
Book Description
This text probes topics and reviews progress in interfacial electrochemistry. It supplies chapter abstracts to give readers a concise overview of individual subjects and there are more than 1500 drawings, photographs, micrographs, tables and equations. The 118 contributors are international scholars who present theory, experimentation and applications.
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461303931
Category : Science
Languages : en
Pages : 427
Get Book Here
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 39 (thesis year 1994) a total of 13,953 thesis titles from 21 Canadian and 159 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 39 reports theses submitted in 1994, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Author: Rachel L. Behrens
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
In support of the recent interest in fuels from renewable resources for fuel cells, the intermediates of the oxidation of formic acid and ethanol to CO2 on platinum electrodes have been examined. The adsorbed carbon monoxide intermediate continues to be the cause for a decrease in efficiency and activity for platinum electrodes and is the leading surface poison (intermediate) in the most common oxidation reactions. We have studied the CO species generated from both fuel and CO-saturated media to observe site conversion of the CO species on polycrystalline platinum and platinum single crystal surfaces with respect to concentration, composition of electrolyte, and potential with electrochemical techniques and broad-band sum frequency generation spectroscopy (BB-SFG). In situ BB-SFG allows for the chemical analysis of electrode surfaces to examine details of surface electrochemical reactions. SFG is based on a second order nonlinear optical process that is forbidden in centrosymmetric media. Therefore, SFG is intrinsically interface-sensitive and enables surface chemical measurements without contribution from the bulk. With the aid of a femtosecond IR laser, we probe vibrational transitions of adsorbates in real time on the electrode surface as the potential at the surface is scanned at rates up to 5 mV/s. Studies of CO species, other reaction intermediates, and adsorbates will be discussed in relation to their poisoning of catalysis by single crystal Pt electrodes. These experiments demonstrate the sensitivity of the BB-SFG technique to the adsorbed species, and its capability to examine adsorption site conversions of the species on the electrode surface. In formic acid fuel solution, in situ BB-SFG was used to obtain vibrational spectra of CO adsorbates produced from formic acid oxidation on a Pt(100) electrode in sulfuric acid and perchloric acid media. The BB-SFG simultaneously monitored all forms of the CO intermediates, including steady-state, as the potential was scanned at 5 mV/s. Spectra were compared to those obtained from CO adsorbed from a CO-saturated electrolyte. While adsorbed from HCOOH, CO had a sharp atop transition near 2050 cm-1 and a broader multiply-bonded transitions in the 1700-1900 cm-1 range, which appear to result from bridge-like and higher-coordinated (possibly fourfold) CO. As the potential was scanned from -0.2 to 0.3 V (vs. Ag/AgCl), the bridge-like CO disappeared and the amount of atop CO increased. At potentials above 0.5 V, CO was in steady-state, being oxidized on the surface to CO2 and replenished by CO from HCOOH. These measurements show that BB-SFG can observe potential-dependent interconversion of different CO forms on the electrode surface and can measure steady-state reaction intermediates on a surface in real time. In situ BB-SFG was also employed to study ethanol on platinum electrodes as a means to elucidate the mechanism of this reaction on catalyst surfaces for fuel cell applications. Recently, the interest in ethanol has increased, not only as a renewable resource, but especially as a fuel source due to its high theoretical yield of 12 electrons released upon complete oxidation. Incomplete oxidation, a major setback with ethanol oxidation, forms byproducts and intermediates slowing the oxidation reaction or prohibiting it from occurring further. Among the byproducts are acetic acid and acetaldehyde, where the C-C bond is not yet broken, or the intermediate CO, where the C-C bond has been broken and is further oxidized to CO2. Using simultaneous electrochemical techniques and broad-band sum frequency generation, these byproducts and intermediates formed on platinum electrodes will be discussed in both acidic and basic media, as a function of electrolyte composition and ethanol concentration.
Author: Wolfgang Schmickler
Publisher: Oxford University Press
ISBN: 0195358317
Category : Science
Languages : en
Pages : 303
Get Book Here
Book Description
Electrochemistry is the study of a special class of interfaces--those between an ionic and an electronic conductor--that can conduct current. This makes it especially important to research and for industrial applications such as semiconductors. This book examines different topics within interfacial electrochemistry, including the theory of structures and processes at metal- solution and semiconductor-solution interfaces, the principles of classical and modern experimental methods, and some of the applications of electrochemistry. Students and nonspecialists in materials science, surface science, and chemistry will find this a valuable source of information.
Author:
Publisher: Elsevier
ISBN: 0128098945
Category : Science
Languages : en
Pages : 5276
Get Book Here
Book Description
Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1040
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 45
Get Book Here
Book Description
Adsorption, catalytic activity and metal deposition at the metal/ solution interface have been studied in a coordinated fashion by radiochemistry, ultra-high vacuum spectroscopies of surface science and electrochemistry. The metal part of the interface was usually a single-crystal of platinum, rhodium or gold, or an ultra-thin metallic film of either cadmium, copper or silver obtained via underpotential deposition processes. The adsorbates predominantly included bisulfate, perchlorate, phosphate, acetic acid and urea. The integrative feature of the adsorbates was their capacity of a reversible adsorption on the platinum electrode. The molecule with which the catalytic rates have been measured was methanol in perchlorate, bisulfate and phosphate solutions. These studies have focused on (1) effects of anions on the catalytic oxidation of methanol on platinum single crystal electrodes, (2) surface chemistry of the studied adsorbates on the clean and admetal covered electrodes, (3) surface studies of the solid/liquid CO (as the most probable methanol chemisorption product), and (4) phase transitions of urea induced by lateral adsorbate-adsorbate interactions. Two methods for in situ and ex situ electrode characterization, namely the radioactive labeling and the ultra-high vacuum- electrochemistry, have been used and advancements in their performance, or new areas of applications, have been reported.
Author: Gregory Jerkiewicz
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 378
Get Book Here
Book Description
The wide scope covered by the 23 papers makes the collection suitable as a survey of current developments in the subject, for specialists in electrochemical surface science, newcomers to the field, or scientists working in related disciplines. The topics include computer simulation of the structure and dynamics of water near metal surfaces, the growth kinetics of phosphate films on metal oxide surfaces, anion adsorption and charge transfer on single-crystal electrodes, an electrochemical and in-situ scanning-probe microscopic study of electroactive polymers, and the temperature dependence of the growth of surface oxide films on rhodium electrodes. Annotation copyrighted by Book News, Inc., Portland, OR.
Author: Héctor D. Abruña
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 616
Get Book Here
Book Description
