Study of hafnium (IV) oxide nanoparticles synthesized by polymerized complex and polymer precursor derived sol-gel methods

Handle URI:
http://hdl.handle.net/10754/564275
Title:
Study of hafnium (IV) oxide nanoparticles synthesized by polymerized complex and polymer precursor derived sol-gel methods
Authors:
Ramos-González, R.; García-Cerda, L. A.; Alshareef, Husam N. ( 0000-0001-5029-2142 ) ; Gnade, Bruce E.; Quevedo-López, Manuel Angel Quevedo
Abstract:
This work reports the preparation and characterization of hafnium (IV) oxide (HfO2) nanoparticles grown by derived sol-gel routes that involves the formation of an organic polymeric network. A comparison between polymerized complex (PC) and polymer precursor (PP) methods is presented. For the PC method, citric acid (CA) and ethylene glycol (EG) are used as the chelating and polymerizable reagents, respectively. In the case of PP method, poly(acrylic acid) (PAA) is used as the chelating reagent. In both cases, different precursor gels were prepared and the hafnium (IV) chloride (HfCl4) molar ratio was varied from 0.1 to 1.0 for the PC method and from 0.05 to 0.5 for the PP method. In order to obtain the nanoparticles, the precursors were heat treated at 500 and 800 °C. The thermal characterization of the precursor gels was carried out by thermogravimetric analysis (TGA) and the structural and morphological characterization by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD patterns of the samples obtained by both methods shows the formation of HfO2 at 500 °C with monoclinic crystalline phase. The PC method exhibited also the cubic phase. Finally, the HfO2 nanoparticles size (4 to 11 nm) was determined by TEM and XRD patterns. © (2010) Trans Tech Publications.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Functional Nanomaterials and Devices Research Group
Publisher:
Trans Tech Publications
Journal:
Materials Science Forum
Conference/Event name:
1st Joint Advanced Electron Microscopy School for Nanomaterials and the Workshop on Nanomaterials, AEM-NANOMAT'09
Issue Date:
Mar-2010
DOI:
10.4028/www.scientific.net/MSF.644.75
Type:
Conference Paper
ISSN:
02555476
ISBN:
087849281X; 9780878492817
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorRamos-González, R.en
dc.contributor.authorGarcía-Cerda, L. A.en
dc.contributor.authorAlshareef, Husam N.en
dc.contributor.authorGnade, Bruce E.en
dc.contributor.authorQuevedo-López, Manuel Angel Quevedoen
dc.date.accessioned2015-08-04T06:21:45Zen
dc.date.available2015-08-04T06:21:45Zen
dc.date.issued2010-03en
dc.identifier.isbn087849281X; 9780878492817en
dc.identifier.issn02555476en
dc.identifier.doi10.4028/www.scientific.net/MSF.644.75en
dc.identifier.urihttp://hdl.handle.net/10754/564275en
dc.description.abstractThis work reports the preparation and characterization of hafnium (IV) oxide (HfO2) nanoparticles grown by derived sol-gel routes that involves the formation of an organic polymeric network. A comparison between polymerized complex (PC) and polymer precursor (PP) methods is presented. For the PC method, citric acid (CA) and ethylene glycol (EG) are used as the chelating and polymerizable reagents, respectively. In the case of PP method, poly(acrylic acid) (PAA) is used as the chelating reagent. In both cases, different precursor gels were prepared and the hafnium (IV) chloride (HfCl4) molar ratio was varied from 0.1 to 1.0 for the PC method and from 0.05 to 0.5 for the PP method. In order to obtain the nanoparticles, the precursors were heat treated at 500 and 800 °C. The thermal characterization of the precursor gels was carried out by thermogravimetric analysis (TGA) and the structural and morphological characterization by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD patterns of the samples obtained by both methods shows the formation of HfO2 at 500 °C with monoclinic crystalline phase. The PC method exhibited also the cubic phase. Finally, the HfO2 nanoparticles size (4 to 11 nm) was determined by TEM and XRD patterns. © (2010) Trans Tech Publications.en
dc.publisherTrans Tech Publicationsen
dc.subjectHafnium oxideen
dc.subjectNanoparticlesen
dc.subjectPolymer precursor methoden
dc.subjectPolymerized complex methoden
dc.subjectSol-gelen
dc.titleStudy of hafnium (IV) oxide nanoparticles synthesized by polymerized complex and polymer precursor derived sol-gel methodsen
dc.typeConference Paperen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalMaterials Science Forumen
dc.conference.date29 September 2009 through 2 October 2009en
dc.conference.name1st Joint Advanced Electron Microscopy School for Nanomaterials and the Workshop on Nanomaterials, AEM-NANOMAT'09en
dc.conference.locationSaltillo, Coahuilaen
dc.contributor.institutionCentro de Investigación en Química Aplicada, Blvd. Enrique Reyna Hermosillo 140, C.P.25250 Saltillo, Coahuila, Mexicoen
dc.contributor.institutionDepartment of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX, United Statesen
kaust.authorAlshareef, Husam N.en
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