Abstract/Details

Size and morphology controlled synthesis of nanomaterials by alkalide reduction


2011 2011

Other formats: Order a copy

Abstract (summary)

Size and shape control of nanocrystals attract more and more attentions and become one of the most interesting research areas. Tailored nanomaterials with desirable size and shape play important roles in catalysis, magnetic refrigeration, MRI contrast agents and information storage due to their unique catalytic, magnetic, electronic and optical properties. In addition, efficient assembly of these nanocrystals makes miniaturization and the possibility of nanodevices appear closer to reality.

Alkalide Reduction is a novel bottom-up method to synthesize a wide variety of nanomaterials, including nanocrystalline lanthanide metals and alloys. Particles with very small size (2–4 nm) and very narrow (< 10%) size dispersion can be produced when applied to synthesis of single metal or alloy nanocrystals. Furthermore, post Alkalide Reduction oxidative heating can result in nanorods of a number of materials. In this dissertation, the first systematic study of the factors that affect the size, size dispersion and shape of nanocrystals made by Alkalide Reduction has been explored. In addition to findings of the relationship between the reaction conditions and the size and size dispersion of gold nanocrystals, we have discovered conditions that allow a large degree of shape control.

Air and moisture stable gold coated gadolinium nanoparticles were first synthesized by Alkaline Reduction under optimal reaction conditions with reasonable particle size and size distribution. Gd nanoparticles were well protected by a gold shell and showed similar magnetic properties to previously reported Gd nanoparticles. Results of these projects will be presented in this dissertation.

Indexing (details)


Subject
Chemistry;
Inorganic chemistry;
Nanoscience;
Materials science
Classification
0485: Chemistry
0488: Inorganic chemistry
0565: Nanoscience
0794: Materials science
Identifier / keyword
Applied sciences; Pure sciences; Alkalide reduction; Core-shell nanomaterials; Mri contrast agents; Nanomaterials synthesis; Shape control; Size control
Title
Size and morphology controlled synthesis of nanomaterials by alkalide reduction
Author
Yan, Chao
Number of pages
204
Publication year
2011
Degree date
2011
School code
0075
Source
DAI-B 72/06, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781124572178
Advisor
Wagner, Michael J.
Committee member
Cahill, Christopher L.; Dowd, Cynthia; Popratiloff, Anastas; Ramaker, David E.
University/institution
The George Washington University
Department
Chemistry
University location
United States -- District of Columbia
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3449655
ProQuest document ID
862991142
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/862991142
Access the complete full text

You can get the full text of this document if it is part of your institution's ProQuest subscription.

Try one of the following:

  • Connect to ProQuest through your library network and search for the document from there.
  • Request the document from your library.
  • Go to the ProQuest login page and enter a ProQuest or My Research username / password.