Crina Anastasescu, Susana Mihaiu, Silviu Preda, Maria Zaharescu

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods (eBook, PDF)

• Format: PDF

Produktbeschreibung

This book presents wet chemical sol-gel and hydrothermal methods for 1D oxide nanostructure preparation. These methods represent an attractive route to multifunctional nanomaterials synthesis, as they are versatile, inexpensive and, thus, appropriate for obtaining a wide range of oxide materials with tailored morphology and properties. Three specific oxides (SiO2, TiO2, ZnO) are discussed in detail in order to illustrate the principle of the sol-gel and hydrothermal preparation of 1D oxide nanostructures. Other oxides synthesized via this method are also briefly presented.

Throughout the book, the correlation between the tubular structure and the physico-chemical properties of these materials is highlighted. 1D oxide nanostructures exhibit interesting optical and electrical properties, due to their confined morphology. In addition, a well-defined geometry can be associated with chemically active species. For example, the pure SiO2 nanotubes presented a slight photocatalytic activity, while the Pt-doped SiO2 tubular materials act as microreactors in catalytic reactions. In the case of titania and titanate nanotubes, large specific surface area and pore volume, ion-exchange ability, enhanced light absorption, and fast electron-transport capability have attracted significant research interest. The chemical and physical modifications (microwave assisted hydrothermal methods) discussed here improve the formation kinetics of the nanotubes. The ZnO nanorods/tubes were prepared as random particles or as large areas of small, oriented 1D ZnO nanostructures on a variety of substrates. In the latter case a sol-gel layer is deposited on the substrate prior to the hydrothermal preparation. Using appropriate dopants, coatings of ZnO nanorods with controlled electrical behavior can be obtained.

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Produktdetails

• Verlag: Springer Nature Switzerland
• Seitenzahl: 82
• Erscheinungstermin: 30. August 2016
• Englisch
• ISBN-13: 9783319329888
• Artikelnr.: 46924472

Inhaltsangabe

Introduction (general considerations on the 1 D oxide nanostructures).- Synthesis of oxide nanotubes by sol-gel method.- Synthesis of oxide nanotubes/nanorods by hydrothermal method.