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Metal oxide Nanostructures from Electrospun Car...
79,00 € *
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The work covered herein discusses for the first time various techniques used in the fabrication of metal oxide nanofibers and nanotubes from eletrospun carbon fibers as templates. The nanofibers were prepared by electrospinning metal oxide precursor inside a polymer matrix. The metal oxide tubes were by tubes by fiber templating. This was followed by calcination to yield the nanofibers and nanotubes. Their morphological, structural, optoelectronic and catalytic properties are also discussed. Among key applications they have found utilization as catalyst supports. Palladium nanoparticles have been supported on Titanium dioxide nanofibers and applied in Heck-coupling reactions. Similarly, included is the effect of impurities on the metal oxide tubes properties done by doping with metal ions. In addition, photocatalytic behavior of metal oxides nanofibers have also been discussed.

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Stand: 21.01.2020
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Andala, Dickson: Metal oxide Nanostructures fro...
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Erscheinungsdatum: 03/2012, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Metal oxide Nanostructures from Electrospun Carbon Templates, Titelzusatz: Metal Oxide Nanofibers and Nanotubes, Autor: Andala, Dickson, Verlag: LAP Lambert Academic Publishing, Sprache: Englisch, Rubrik: Anorganische Chemie, Seiten: 252, Informationen: Paperback, Gewicht: 392 gr, Verkäufer: averdo

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Stand: 21.01.2020
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An Overview of Macrocyclic Metal Complexes
49,90 € *
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This book contains an overview of Macrocyclic Metal Complexes. Macrocyclic complexes of metal has fascinated and raise the attention of researchers due to their ample applications in bioinorganic chemistry for biochemical, industrial and agricultural purpose. Macrocyclic ligand metal complexes are best prepared with the aid of metal ions as 'templates' to direct the steric course of the condensation reaction which ultimately end with ring closure. The text will discuss the versatile application, synthesis ,characterization and biological properties of Macrocyclic complexes. Providing a wide reaching review of this important area, this book will be of interest to undergraduate, post graduate and researchers.

Anbieter: Dodax
Stand: 21.01.2020
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An Overview of Macrocyclic Metal Complexes
51,30 € *
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This book contains an overview of Macrocyclic Metal Complexes. Macrocyclic complexes of metal has fascinated and raise the attention of researchers due to their ample applications in bioinorganic chemistry for biochemical, industrial and agricultural purpose. Macrocyclic ligand metal complexes are best prepared with the aid of metal ions as 'templates' to direct the steric course of the condensation reaction which ultimately end with ring closure. The text will discuss the versatile application, synthesis ,characterization and biological properties of Macrocyclic complexes. Providing a wide reaching review of this important area, this book will be of interest to undergraduate, post graduate and researchers.

Anbieter: Dodax AT
Stand: 21.01.2020
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Ordered Mesoporous Materials
165,65 € *
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Mesoporous materials are a class of molecules with a large and uniform pore size, highly regular nanopores, and a large surface area. This book is devoted to all aspects and types of these materials and describes, in an in-depth and systematic manner, the step-by-step synthesis and its mechanism, as well as the characterization, morphology control, hybridization, and applications, of mesoporous molecular sieves. In so doing, it covers silicates, metal-doped silicates, nonsilicates, and organic-inorganic hybrids.Although the emphasis is on synthesis, the expert authors also discuss characterization and applications, ranging from catalysis and biochemistry to optics and the use of these materials as templates for nanomaterial synthesis. Both the fundamentals and the latest research results are covered, ensuring that this monograph serves as a reference for researchers in and newcomers to the field.

Anbieter: Dodax AT
Stand: 21.01.2020
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Preparation and Novel Characterization Ways of ...
82,20 € *
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The present work deals with the preparation of mesoporous metal oxide systems by means of new block copolymer templates and the development of original structural characterization methods. In the first part of the work is shown that PIB-PEO block copolymers generate robust and highly porous metal oxide textures characterized by large pores of spherical form. Sol-gel mesoporous TiO2 films were also tested as semiconductors in dye sensitized solar cell devices noticing promising results in comparison with the nanoparticulate systems. Furthermore, the remarkable templating behavior of the PIB-PEO block copolymers is also presented by the preparation of hierarchical silica powders. Due to the structural complexity of these latter systems their characterization could not be exhaustively carried out by means of standard analysis approaches. The employment of the in-situ SAXS/SANS-physisorption technique provided thus an exclusive possibility to study in detail the porosity and its organization in these hierarchical materials. Interesting applications of this novel characterization technique are given also by the analysis of further systems like periodic mesoporous organosilicas (PMOs).

Anbieter: Dodax AT
Stand: 21.01.2020
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Block Copolymer Nanostructuring
70,00 € *
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Block copolymers are fascinating materials that have attracted a lot of attention in recent years, as a consequence of their ability to serve as ideal building blocks to fabricate nanostructures. They are macromolecules consisting of chemically different parts (blocks) that tend to self-assembly into well-ordered nanoscaled structures both in bulk and in a selective solvent for one of the block. In this thesis, amphiphilic block copolymers were successfully applied as templates for the controlled formation and defined positioning of metal and metal oxide nanoparticles arranged in periodic patterns on flat surfaces and in polymer nanofibre structures. Furthermore, a method was developed to arrange nanoparticles in desired nano-structured micropatterns on flat substrates using the combinations of "top_down" and "bottom-up" approaches: a self-assembled monolayer of hexagonally ordered block copolymer micelles loaded with gold precursor salt was used as a resist for lithography. Two diffrent energy sources were applied to selectively modify and pin the micelles to the substrate: UV light and s Focus Ion Beam.

Anbieter: Dodax AT
Stand: 21.01.2020
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Block Copolymer Nanostructuring
68,00 € *
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Block copolymers are fascinating materials that have attracted a lot of attention in recent years, as a consequence of their ability to serve as ideal building blocks to fabricate nanostructures. They are macromolecules consisting of chemically different parts (blocks) that tend to self-assembly into well-ordered nanoscaled structures both in bulk and in a selective solvent for one of the block. In this thesis, amphiphilic block copolymers were successfully applied as templates for the controlled formation and defined positioning of metal and metal oxide nanoparticles arranged in periodic patterns on flat surfaces and in polymer nanofibre structures. Furthermore, a method was developed to arrange nanoparticles in desired nano-structured micropatterns on flat substrates using the combinations of "top_down" and "bottom-up" approaches: a self-assembled monolayer of hexagonally ordered block copolymer micelles loaded with gold precursor salt was used as a resist for lithography. Two diffrent energy sources were applied to selectively modify and pin the micelles to the substrate: UV light and s Focus Ion Beam.

Anbieter: Dodax
Stand: 21.01.2020
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Preparation and Novel Characterization Ways of ...
79,90 € *
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The present work deals with the preparation of mesoporous metal oxide systems by means of new block copolymer templates and the development of original structural characterization methods. In the first part of the work is shown that PIB-PEO block copolymers generate robust and highly porous metal oxide textures characterized by large pores of spherical form. Sol-gel mesoporous TiO2 films were also tested as semiconductors in dye sensitized solar cell devices noticing promising results in comparison with the nanoparticulate systems. Furthermore, the remarkable templating behavior of the PIB-PEO block copolymers is also presented by the preparation of hierarchical silica powders. Due to the structural complexity of these latter systems their characterization could not be exhaustively carried out by means of standard analysis approaches. The employment of the in-situ SAXS/SANS-physisorption technique provided thus an exclusive possibility to study in detail the porosity and its organization in these hierarchical materials. Interesting applications of this novel characterization technique are given also by the analysis of further systems like periodic mesoporous organosilicas (PMOs).

Anbieter: Dodax
Stand: 21.01.2020
Zum Angebot