Abstract/Details

Chemical engineering of nanoshell chemical reactors


2005 2005

Other formats: Order a copy

Abstract (summary)

The objective of this project is to develop a reliable synthesis and characterization procedure for the development of silicate-based nanoshell chemical reactors. These materials may be useful in a wide range of areas including drug and gene delivery, biocatalysis, sensors, and photoactive devices. To achieve this objective, synthesis methods for two types of nanoparticle encapsulating a chemically or photochemically active species in aqueous and hydrophobic cores were evaluated. Templates used to form these shells included micelles, gold nanoparticles, and liposomes. Model compounds in the form of Cascade Blue dye, pyrene, and urease enzymes were encapsulated inside the nanoshells. The interdependence of shell formation and model compound encapsulation efficiency was characterized using a variety of colloidal and microscopic methods such as dynamic light scattering, transmission electron microscopy, atomic force microscopy, and steady-state and time resolved fluorescence. Using these methods, nanoparticle yields and size distributions, estimates of the internal viscosity, and diffusion of molecules in and out of the nanoshell as a function of chemical and physical environment were examined. Based on these results, the effect of nanoshell encapsulation on the kinetics of chemical reactions and their potential for future applications of these materials are evaluated.

Indexing (details)


Subject
Chemical engineering
Classification
0542: Chemical engineering
Identifier / keyword
Applied sciences; Chemical reactors; Encapsulation; Nanoshell; Pyrene; Urease
Title
Chemical engineering of nanoshell chemical reactors
Author
Wang, Qiang
Number of pages
158
Publication year
2005
Degree date
2005
School code
0165
Source
DAI-B 66/04, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780542101878, 0542101874
Advisor
Ostafin, Agnes E.
University/institution
University of Notre Dame
University location
United States -- Indiana
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3171637
ProQuest document ID
305397247
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305397247
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.