The Structure-Function Relationship and Applications of Noble Metal Nanomaterials
Authors
Beaton, Graham
Date
Type
thesis
Language
eng
Keyword
Nanomaterials , Chemistry , Materials Science
Alternative Title
Abstract
Noble metal nanoparticles have been studied for decades and used as the basis for countless materials. From catalysis to chemical sensing, important applications rely on the continued development and understanding of these unique and powerful materials. Nanomaterials owe their utility and precise function to their size, shape and support, or in other words, their structure. In order to continue to push nanomaterials forward and realize new and improved applications, we must develop materials that can address issues of surface stability without sacrificing the important electronic and optical properties of nanoparticles. Improving our understanding of the interplay between structure and function will help these already widely used materials achieve their true utility. To accomplish these goals, this thesis was directed towards the structure tailored application of nanoparticles with the following major contributions: In this thesis, (1) A stabilization method of colloidal silver nanoparticles on an aluminum oxide scaffolding is investigated and reported. (2) A photochemical shape control method is applied to both solid phase and colloidally stabilized silver systems, offering stable particles with tailored optical properties. (3) Colloids of metal oxide stabilized silver and gold nanoparticles are showcased as redox catalysts for the template reduction reaction of 4-nitrophenol, offering insights into the importance of surface site availability. (4) Silver nanoparticle thin films are showcased as reliable and stable chemical sensors for surface enhanced Raman spectroscopy. The parameters of particle loading, and shape are optimized, and films are used to sense the pesticide thiram at trace concentrations. (5) A cellulose-gold nanoparticle hybrid material is synthesized and showcased as a hydrovoltaic device. In each of the applications investigated, specific tailoring of the surface chemistry and properties of the metal nanoparticles has been controlled as the key parameter for optimizing the materials for that application. Chapters 2-5 are presented in concise, manuscript form and much of the relevant information pertaining to these works are referenced in the respective appendices.
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Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
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Copying and Preserving Your Thesis
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Attribution-NonCommercial-NoDerivs 3.0 United States
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.
Attribution-NonCommercial-NoDerivs 3.0 United States