Mesoporous silica encapsulated metal nanoparticles in catalysis

dc.contributor.advisor Wenyu Huang Pei, Yuchen
dc.contributor.department Chemistry 2019-09-20T12:35:40.000 2020-06-30T03:17:19Z 2020-06-30T03:17:19Z Tue May 01 00:00:00 UTC 2018 2019-04-18 2018-01-01
dc.description.abstract <p>Nanosized particles can demonstrate dramatic performance in comparison to bulk materials in heterogeneous catalysis, due to their high density of under coordinate sites associated with altered electronic properties. The structural and compositional design of bimetallic nanoparticles can further afford the precise control of activity and selectivity via the geometric and electronic effects of secondary metals. Intermetallic compounds are one of the special alloys with defined stoichiometry and ordered crystal structure, which exemplifies them as ideal model catalysts for structure-property studies in catalysis. Direct colloidal synthesis of intermetallic nanoparticles requires the presence of organic capping agents, which limits the thermal stability of nanoparticles and complicates their surface structures. Mesoporous silica shells can be used to encapsulate monometallic and bimetallic nanoparticles with high sinter-resistance for high-temperature treatment, and enables their applications for harsh reaction conditions and fundamental mechanism studies. Several examples of silica-encapsulated nanoparticles have been demonstrated in this thesis to study their catalytic properties.</p>
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dc.identifier archive/
dc.identifier.articleid 8294
dc.identifier.contextkey 15016519
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/17287
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 21:19:46 UTC 2022
dc.subject.disciplines Analytical Chemistry
dc.subject.keywords Catalysis
dc.subject.keywords Metal
dc.subject.keywords Nanoparticle
dc.subject.keywords Silica
dc.subject.keywords Structure
dc.title Mesoporous silica encapsulated metal nanoparticles in catalysis
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 42864f6e-7a3d-4be3-8b5a-0ae3c3830a11 Analytical Chemistry dissertation Doctor of Philosophy
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