Show simple item record

dc.contributor.advisorEanes, Mehtapen
dc.contributor.advisorÇağır, Alien
dc.contributor.authorBoz, Mithaten
dc.date.accessioned2014-07-22T13:51:56Z
dc.date.available2014-07-22T13:51:56Z
dc.date.issued2013en
dc.identifier.urihttp://hdl.handle.net/11147/3610
dc.descriptionThesis (Master)--İzmir Institute of Technology, Chemistry, İzmir, 2013en
dc.descriptionIncludes bibliographical references (leaves: 59-62)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxi, 70 leavesen
dc.descriptionFull text release delayed at author's request until 2016.08.20en
dc.description.abstractSingle crystalline cerium oxide nanoparticles were synthesized with hydrothermal method by mixing cerium nitrate [Ce(NO3)3.6H2O] aqueous solution with NaOH and urea. SEM, TEM and XRD characterization methods were used in order to identify morphology. First part of the study includes the work on effect of hydrothermal parameters, such as base type and concentration, surfactant, reaction temperature, and time on particle size and morphology. The reaction time, temperature and concentration trials were carried out for urea only. When base types were compared, smaller particles were synthesized in the presence of NaOH yet smaller crystalline sized particles were obtained in the presence of urea. Effect of surfactant was investigated however there was no significant effect on size or morphology. Effect of concentration was clear, cubic and triangular prism shaped particles obtained for concentrations lower than 1M, and for concentration higher than 1M, agglomerated spherical particles were obtained. Reaction time and temperature were also investigated and all the reactions resulted in agglomerated non-uniform spherical particles. There was no considerable difference in particle and crystalline size for these samples. Due to the sub-micron size of CeO2 synthesized using urea, CeO2 nanoparticles synthesized using NaOH for catalysis. Second part includes the investigation of catalytic property of CeO2 nanoparticles. CeO2 nanoparticles were used as catalyst in the synthesis of flavone from 2‟-hydroxychalcone. Total flavone yield was approximately 42.5 %. Several reaction parameters were studied in order to achieve the flavone synthesis. TLC, GC-MS and NMR were used in order to monitor the results of the reactions.en
dc.language.isoengen
dc.publisherİzmir Institute of Technologyen
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subject.lcshCerium oxidesen
dc.subject.lcshThermochemistryen
dc.subject.lcshNanoparticlesen
dc.titleHydrothermal synthasis and investigation of catalytic activities of cerium oxide nanoparticlesen
dc.typemasterThesisen
dc.contributor.departmentİzmir Institute of Technology. Chemistryen
dc.relation.publicationcategoryTezen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record