Design and Construction of a High Vacuum Surface Analysis Instrument to Study Chemistry at Nanoparticulate Surfaces

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dc.contributor.authorJeffery, Brandon Reeden
dc.contributor.committeechairMorris, John R.en
dc.contributor.committeememberLong, Gary L.en
dc.contributor.committeememberTissue, Brian M.en
dc.contributor.departmentChemistryen
dc.date.accessioned2017-04-04T19:49:08Zen
dc.date.adate2011-05-27en
dc.date.available2017-04-04T19:49:08Zen
dc.date.issued2011-04-21en
dc.date.rdate2016-10-03en
dc.date.sdate2011-05-17en
dc.description.abstractMetal oxide and metal oxide-supported metal nanoparticles can adsorb and decompose chemical warfare agents (CWAs) and their simulants. Nanoparticle activity depends on several factors including chemical composition, particle size, and support, resulting in a vast number of materials with potential applications in CWA decontamination. Current instrumentation in our laboratory used to investigate fundamental gas-surface interactions require extensive time and effort to achieve operating conditions. This thesis describes the design and construction of a high-throughput, high vacuum surface analysis instrument capable of studying interactions between CWA simulants and nanoparticulate surfaces. The new instrument is small, relatively inexpensive, and easy to use, allowing for expeditious investigations of fundamental interactions between gasses and nanoparticulate samples. The instrument maintains the sample under high vacuum (10?⁷-10?⁹ torr) and can reach operating pressures in less than one hour. Thermal control of the sample from 150-800 K enables sample cleaning and thermal desorption experiments. Infrared spectroscopic and mass spectrometric methods are used concurrently to study gas-surface interactions. Temperature programmed desorption is used to estimate binding strength of adsorbed species. Initial studies were conducted to assess the performance of the instrument and to investigate interactions between the CWA simulant dimethyl methylphosphonate (DMMP) and nanoparticulate silicon dioxide.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05172011-201909en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05172011-201909/en
dc.identifier.urihttp://hdl.handle.net/10919/76776en
dc.language.isoen_USen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjecttemperature programmed desorptionen
dc.subjectinfrared spectroscopyen
dc.subjecthigh vacuumen
dc.subjectchemical warfare agenten
dc.subjectnanoparticlesen
dc.subjectsilicon dioxideen
dc.titleDesign and Construction of a High Vacuum Surface Analysis Instrument to Study Chemistry at Nanoparticulate Surfacesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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