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Chemical Physics of Nanostructured Semiconductors

Autor A. I. Kokorin, D. W. Bahnemann, Alexander Kokorin
en Limba Engleză Hardback – iul 2003
Deep and detailed discussions on chemistry, chemical physics, photoelectrochemistry, photophysics, photocatalysis and possible applications of nanostructured semiconductor materials have shown increasing interest in the matter by scientists representing various research areas as well as industrial enterprises. Indeed, solar energy conversion and chemical methods for its realization became very popular again after the “great jump” of renewable energy sources between the middle of the 1970s and the beginning of the 1980s.Several excellent books have been published over the past years, however, in these books no attempt was made to approach this research area from the point of view of classical chemical physics.With this book, the editors aim: a) to generate an adequate scope of the modern trends and data obtained during the last years in the area of chemical physics of nanostructured materials, in particular, nanocrystalline semiconductors; b) to select an equal mix of scientists from Western and Eastern countries, all of them experts in their respective research areas; and c) to present to the international scientific community many interesting and important results which have been obtained by former Soviet Union researchers, but are not well known because they had originally been published in Russian books and journals.This book will be interesting and useful for scientists working in the area of semiconductor nanotechnology, photoelectrochemistry, photocatalysis, photochemistry of water and air purification, as well as for graduate and post-graduate students who are planning to join these research areas.
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Specificații

ISBN-13: 9789067643825
ISBN-10: 9067643823
Pagini: 264
Dimensiuni: 156 x 235 x 19 mm
Greutate: 0 kg
Editura: CRC Press

Cuprins

PrefaceAbout the authorsChapter 1. Charge Separation in Titanium Oxide Nanocrystalline Semiconductors Revialed by Magnetic ResonanceT. Rajh, O. G. Poluektov and M. C. ThurnauerIntroduction Basic Mechanisms of Semiconductor-Assisted PhotocatalysisCharge Separation and Carrier Trapping in TiO2 NanoparticlesKinetic and Mechanism of the Charge Separation in TiO2 Colloid Nanoparticles as Studied by Time-Resolved EPR TechniqueSummary; ReferencesChapter 2. Kinetic Peculiarities of Photocatalytic Reactions on CdS NanocolloidsD. V. Bavykin, E. N. Savinov, I. N. Martyanov and V. N. ParmonIntroduction Synthesis of CdS ColloidsReaction of Interfacial Electron Transfer as the First Stage of Redox Photocatalytic ProcessesLuminescence Quenching of CdS ColloidsKinetics of Photocatalytic Reactions at Stationary IlluminationConclusion; ReferencesChapter 3. Photooxidation of Water at Hematite ElectrodesT. Lindgren, L. Vayssieres, H. Wang and S.-E. LindquistIntroduction General Background of Photooxidation of WaterStructural and Physical Properties of HematitePhotoresponse of Hematite MaterialsConclusion and Future Scopes; ReferencesChapter 4. Photoelectrochemistry of Nanocrystalline Aggregates of Cyanine Dyes on the Semiconductor ElectrodesD. V. SviridovIntroduction Spectroscopic Properties of Aggregated Cyanine dyesEffect of Aggregate Formation upon Electronic Energy Levels of Cyanine Dyes (CDs)Aggregates of Cyanine Dyes as the Sensitizing Agents in the Photoelectro-chemical SystemsPhotoelectrochemical Spectral Sensitization by Partially Aggregated CDsSpectral Sensitization of Semiconductor by Mixture of J-aggregated CDsPhotoelectrochemical Behaviour of Thin Films of Aggregated CDsConclusions; ReferencesChapter 5. Physico-Chemical Properties of Novel Nanocrystalline Ruthenium Based Chalcogenide MaterialsN. Alonso-VanteIntroductionClusters or ParticlesA Non-aqueous Chemical Route of SynthesisElectrocatalysis and PhotoelectrocatalysisSummary; ReferencesChapter 6. Metal Nanoparticles on Semiconductor Surfaces: Electrochemistry and PhotocatalysisA. I. KulakIntroductionDependence of Nanoparticles Morphology and Behavior in Electron Transfer Processes on the Mean of Metal Nanophase Deposition onto Semiconductor Surface (ScS)Formation of Electronic Surface States in Semiconductor Band Gap as a Result of Deposition of Metal Particles on Semiconductor SurfaceElectrocatalytic Activity of Semiconductor Electrodes Modified by Surface Deposited Metal NanophaseImpedometric Investigation of Titania Electrodes Surface-Modified with Metal ParticlesInteraction of Metal Nanoparticles with the Associates of Donor Defects in Wide-Band-Gap n-type SemiconductorsConclusion; ReferencesChapter 7. Photocatalysis: Electron Transfer Serving the EnvironmentD. W. Bahnemann, R. Dillert and P. K. J. RobertsonIntroduction Primary Processes upon Band Gap Irradiation of Semiconductor ParticlesChemical Nature of Trapped Charge CarriersFate of Trapped Charge CarriersConclusions; ReferencesChapter 8. Electron Spin Resonance of Nanostructured Oxide SemiconductorsA. I. KokorinList of General SymbolsIntroduction EPR Signals of Oxide SemiconductorsEPR of Small Molecules Adsorbed on the Semiconductor SurfaceStructural Aspects in the Study of Nanocrystalline MaterialsVanadium Ions “Behaviour” in/on Oxide Semiconductors Other Paramagnetic DopantsIdentification of Adsorbed Cun+ Ions at the TiO2 Surface and Electro-Chemical Behaviour of Copper-Modified ElectrodesGeneral Conclusions; References

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