Electrochemical Effects Produced by Light‐induced Electron Emission

Barker, G.C.

doi:10.1002/bbpc.19710750805

Cited by 53 publications

(4 citation statements)

References 12 publications

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“…Barker et al [429][430][431] proposed an interesting method for investigating electrode reactions involving atomic hydrogen and other atoms and radicals. The essence of these experiments lies in that the electrons, emitted upon illumination of the electrode by light of a sufficiently high frequency, react with H30+ ions at small distances from the electrode (of the order of tens of angstroms) thereby producing H atoms.…”

Section: Electrode Reactions Involving Atomic Hydrogen Generated Thromentioning

confidence: 99%

Charge Transfer Reactions in Electrochemical and Chemical Processes

Krishtalik

1986

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Section: Electrode Reactions Involving Atomic Hydrogen Generated Thromentioning

confidence: 99%

Charge Transfer Reactions in Electrochemical and Chemical Processes

Krishtalik

1986

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“…The photoemission of electrons from a mercury electrode into a concentrated electrolyte solution, and the subsequent chemical and physical processes that accompany it, have in recent years been the subject of extensive experimental and theoretical investigations (1)(2)(3)(4)(5)(6). The detailed succession of events which occurs upon electron emission has now been determined for a large number of chemical systems by means of a variety of experimental techniques.…”

mentioning

confidence: 99%

“…The alternate experimental approach entails the use of a very short duration flash, or pulsed light, source to generate transient electron emission which can be followed directly to provide kinetic and mechanistic information (3,(14)(15)(16)(17). Because of the large amount of noise pickup resulting from the flash discharge and the concomitant difficulties in maintaining adequate pote ntial control at short times, potentiostatic chronoamperometric measurements have not been very useful previously.…”

mentioning

confidence: 99%

“…Because of the large amount of noise pickup resulting from the flash discharge and the concomitant difficulties in maintaining adequate pote ntial control at short times, potentiostatic chronoamperometric measurements have not been very useful previously. Rather, the monitoring of subsequent potential changes induced at the emitting electrode under coulostatic conditions has been employed (3,17). The difficulties inherent in the coulostatic approach include the extremely low signal levels and the sometimes indirect nature of the measurements involved.…”

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confidence: 99%

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Chronoamperometric Studies of Flash Photoemission at a Mercury Electrode

Baldwin

Perone

1976

J. Electrochem. Soc.

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Flash irradiation and high speed potentiostatic monitoring have been utilized to study the electrochemical processes associated with the photoemission of electrons from a mercury electrode into various electrolyte solutions. Conditions in which no efficient hydrated electron scavenging species was present, as well as conditions employing 10−3 M concentrations of NO2− , H3O+ , NO3− , and acetophenone, were examined. The magnitudes of the resulting flash photocurrents and their variation with electrode potential agreed qualitatively with results obtained previously using continuous radiation or coulostatic monitoring techniques. The temporal behavior of the currents showed that they were capacitive in nature, resulting from double layer recharging in response to the electron pulse caused by the extremely rapid electron emission and scavenging reactions. The charging current model appears valid for the wide variety of scavenging situations considered in this work.

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Licht als Sonde zur Untersuchung elektrochemischer Grenzflächenreaktionen

Gerischer

1988

Angew. Chem.

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Spektroskopische Methoden sind für das Studium von elektrochemischen Grenzflächenprozessen immer wichtiger geworden, seitdem ihre Empfindlichkeit so weit gesteigert werden konnte, daß auch Veränderungen der Lichtabsorption in Monoschichten erfaßbar wurden. Gleichzeitig hat die Entwicklung neuer, allerdings nur im Ultrahochvakuum anwendbarer Methoden in der Oberflächenphysik auf die Elektrochemie ausgestrahlt, indem diese Methoden auf Untersuchungen an Elektroden nach deren Überführung ins Ultrahochvakuum angewendet wurden. Parallel dazu hat die Verfügbarkeit von gut definierten Halbleitern, in denen durch Lichtabsorption Photoströme erzeugt werden können, zu einer Entwicklung photoelektrochemischer Methoden geführt, mit denen Elektrodenreaktionen sowohl an Halbleitern als auch an mit halbleitenden Deckschichten bedeckten Metallen untersucht werden können. Schließlich ist beim Studium der Halbleiterelektroden erkannt worden, daß man durch Redoxreaktionen an Elektroden Lumineszenz auslösen kann, woraus sich wichtige Erkenntnisse über den Ablauf von Elektronenübertragungsprozessen herleiten lassen. Über diese Entwicklungen wird hier zusammenfassend berichtet.

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Electrochemical Effects Produced by Light‐induced Electron Emission

Cited by 53 publications

References 12 publications

Charge Transfer Reactions in Electrochemical and Chemical Processes

Charge Transfer Reactions in Electrochemical and Chemical Processes

Chronoamperometric Studies of Flash Photoemission at a Mercury Electrode

Licht als Sonde zur Untersuchung elektrochemischer Grenzflächenreaktionen

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