Silviu Preda's Books

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

By: Crina Anastasescu,Susana Mihaiu,Silviu Preda,Maria Zaharescu

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1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

By: Crina Anastasescu,Susana Mihaiu,Silviu Preda,Maria Zaharescu

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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Springer

Published Date

ISBN 10

331932988X

ISBN 13

9783319329888

Administrative law in Romania

By: Cătălin-Silviu Săraru

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Administrative law in Romania

By: Cătălin-Silviu Săraru

This book aims to provide an overview of the administrative law in Romania, emphasizing its particularities in comparative law and the changes that have occurred, as a result of integration into the European Union. Administrative law is the branch of law that includes the legal norms that regulate the social relations regarding the organization, activity, control and responsibility of the public administration, based on and in the application of the law. The book analyzes the organization and functioning of the institutions that make up the public administration in Romania, the means of action (the administrative act, the administrative contract, the administrative operations), the material means (the goods in the public domain) and the personnel (public function) at its disposal. This volume is aimed at practitioners, researchers, students and PhD candidates in juridical and administrative sciences, who are interested in recent developments and prospects for development in the field of administrative law and public administration at international and national level.

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171

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ADJURIS – International Academic Publisher

Published Date

ISBN 10

6069497813

ISBN 13

9786069497814

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

By: Crina Anastasescu,Susana Mihaiu,Silviu Preda,Maria Zaharescu

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1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

By: Crina Anastasescu,Susana Mihaiu,Silviu Preda,Maria Zaharescu

Average ratings

N/A

Write a review

Solve jigsaw puzzle

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Page Count

Publisher

Springer

Published Date

ISBN 10

331932988X

ISBN 13

9783319329888

Book's by Silviu Preda

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

Administrative law in Romania

Administrative law in Romania

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

1D Oxide Nanostructures Obtained by Sol-Gel and Hydrothermal Methods

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