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Structure, stability, vibrational, thermodynamic, and catalytic properties of metal nanostructures: size, shape, support, and adsorbate effects

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Date Issued:
2012
Abstract/Description:
Recent advances in nanoscience and nanotechnology have provided the scientific community with exciting new opportunities to rationally design and fabricate materials at the nanometer scale with drastically different properties as compared to their bulk counterparts. In this dissertation, several challenges have been tackled in aspects related to nanoparticle (NP) synthesis and characterization, allowing us to make homogenous, size- and shape-selected NPs via the use of colloidal chemistry, and to gain in depth understanding of their distinct physical and chemical properties via the synergistic use of a variety of ex situ, in situ, and operando experimental tools. A variety of phenomena relevant to nanosized materials were investigated, including the role of the NP size and shape in the thermodynamic and electronic properties of NPs, their thermal stability, NP-support interactions, coarsening phenomena, and the evolution of the NP structure and chemical state under different environments and reaction conditions.
Title: Structure, stability, vibrational, thermodynamic, and catalytic properties of metal nanostructures: size, shape, support, and adsorbate effects.
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Name(s): Behafarid, Farzad, Author
Roldan Cuenya, Beatriz, Committee Chair
Chow, Lee, Committee CoChair
Heinrich, Helge, Committee Member
Kara, Abdelkader, Committee Member
Schoenfeld, Winston, Committee Member
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2012
Publisher: University of Central Florida
Language(s): English
Abstract/Description: Recent advances in nanoscience and nanotechnology have provided the scientific community with exciting new opportunities to rationally design and fabricate materials at the nanometer scale with drastically different properties as compared to their bulk counterparts. In this dissertation, several challenges have been tackled in aspects related to nanoparticle (NP) synthesis and characterization, allowing us to make homogenous, size- and shape-selected NPs via the use of colloidal chemistry, and to gain in depth understanding of their distinct physical and chemical properties via the synergistic use of a variety of ex situ, in situ, and operando experimental tools. A variety of phenomena relevant to nanosized materials were investigated, including the role of the NP size and shape in the thermodynamic and electronic properties of NPs, their thermal stability, NP-support interactions, coarsening phenomena, and the evolution of the NP structure and chemical state under different environments and reaction conditions.
Identifier: CFE0004779 (IID), ucf:49796 (fedora)
Note(s): 2012-12-01
Ph.D.
Sciences, Physics
Doctoral
This record was generated from author submitted information.
Subject(s): nanoparticles -- STM -- TiO2(110) -- Inverse micelle encapsulation -- XAS -- EXAFS -- XANES -- Alumina -- Al2O3 -- shape effect -- NP-support interaction -- In situ -- operando -- Coarsening -- sintering -- shape determination -- epitaxial relation -- Ostwald ripening -- diffusion-coalescense -- Pt -- Au -- Platinum -- Gold
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFE0004779
Restrictions on Access: campus 2014-06-15
Host Institution: UCF

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