Masters Theses

Abstract

“Gold colloids have been homogenously coated with silica using silane coupling agents as a primer to make the gold surface vitreophilic. After adding active silica, the particles are transferred in ethanol for uniform silica coating by using the Stober method. Gold nanoparticles used for this study ranged from 5 nm up to 40 nm with mixed results. Silica condensation can be controlled to produce different silica thicknesses on gold. The main problem while coating smaller particles (5 nm and 10 nm) was the final coagulation or necking of silica after coating the gold surface. The possible causes for this effect are also examined. These composite nanoparticles are then characterized by studying their optical properties particularly absorbance using a fiber optic spectrometer. Such complex but functional particles and structures should have potential applications in optics and other areas”--Abstract, page iii.

Advisor(s)

Xing, Yangchuan

Committee Member(s)

Ludlow, Douglas K.
Miller, F. Scott, 1956-

Department(s)

Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering

Comments

The author would like to convey his thanks to Intelligent Systems Center for supporting this research.

Research Center/Lab(s)

Intelligent Systems Center

Publisher

University of Missouri--Rolla

Publication Date

Summer 2003

Pagination

xi, 64 pages

Note about bibliography

Includes bibliographical references (pages 62-63).

Rights

© 2003 Milind Laxman Surve, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Nanoparticles
Silica -- Surfaces
Solution (Chemistry)

Thesis Number

T 8319

Print OCLC #

54859646

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