Mesoporous silica encapsulated metal nanoparticles in catalysis

dc.contributor.advisor Wenyu Huang
dc.contributor.author Pei, Yuchen
dc.contributor.department Chemistry
dc.date 2019-09-20T12:35:40.000
dc.date.accessioned 2020-06-30T03:17:19Z
dc.date.available 2020-06-30T03:17:19Z
dc.date.copyright Tue May 01 00:00:00 UTC 2018
dc.date.embargo 2019-04-18
dc.date.issued 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>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/17287/
dc.identifier.articleid 8294
dc.identifier.contextkey 15016519
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/17287
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/31470
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/17287/Pei_iastate_0097E_17203.pdf|||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
thesis.degree.discipline Analytical Chemistry
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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