Nanomaterials Synthesized by Alkalide Reduction and Their Characterization

Nanomaterials have been the subject of enormous interest since last century. These materials have the potential for applications in catalysis, information storage, superconductors, microwave technology, and magnetic refrigeration. Nanomaterials display novel and often enhanced properties compared to bulk materials. Furthermore, decreasing the size and mass of component parts through the use of nanomaterials brings miniaturization and the possibility of nanodevices closer to reality.Alkalides, crystalline compounds containing a stoichiometric number of trapped alkali metal anions charge balanced by alkali metal cations, produce solvated alkali metal anions upon dissolution. Alkali metal anions are one of the most powerful reducing agents in any given solvent system. Reduction of metal cations with alkali metal anions, or "alkalide reduction", results in rapid production of nanoscale materials. This sub-ambient, homogeneous solution method has been proven capable of synthesizing a variety of metals, metal alloys, carbides, nitrides, and especially oxides. In this thesis, the synthesis of a family of terbium and europium doped yttrium tantalate nanoscale phosphors and alkaline earth doped lanthanide manganites magnetic materials using alkalide reduction is reported. Their structural, morphology properties, fluorescent and magnetic properties are presented.

Author

• Li, Sumin

Language

• en

Keyword

• fluorescence
• Alkalide reduction
• pyrochlore
• nanomaterial
• magnetoresistance

Date created

• 2010

Type of Work

• Master's Thesis

License

• All rights reserved

Rights statement

• In Copyright

GW Unit

• Chemistry

Degree

• M.S.

Advisor

• Wagner, Michael J.

Committee Member(s)

• Sadtchenko, Vladislav

Persistent URL

•  https://scholarspace.library.gwu.edu/etd/np193938p