One-pot synthesis of CdS nanoparticles in the channels of mesosructured silica films and monoliths

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dc.citation.epage579en_US
dc.citation.issueNumber3en_US
dc.citation.spage573en_US
dc.citation.volumeNumber17en_US
dc.contributor.authorTura, C.en_US
dc.contributor.authorCoombs, N.en_US
dc.contributor.authorDag, Ö.en_US
dc.date.accessioned2016-02-08T10:24:15Z
dc.date.available2016-02-08T10:24:15Z
dc.date.issued2005en_US
dc.departmentDepartment of Chemistryen_US
dc.description.abstractCd(II)-modified mesoporous silica films and/or monoliths synthesized in one pot using a true liquid crystalline (TLC) approach have been reacted with H2S gas to produce CdS-modified mesostructured nanocomposite materials (Nano-CdS/meso-SiO2). During this process, both the TLC and the metallotropic liquid crystalline (MLC) mesophase of metal salt ([Cd(H 2O)4](NO3)2)-nonionic surfactant (CnH2n+1- (OCH2CH2)mOH, CnEOm) systems were collectively used to incorporate large quantities of metal ions into the mesoporous silica film and monoliths. The effect of the cadmium nitrate concentration on the formation and structure of the mesoporous silica has also been investigated. The results show that at low salt concentrations, the mesoporous silica is anisotropic (hexagonal); however, at high salt concentration, the structure is isotropic (cubic or disordered). The freshly prepared CdS nanoparticles are reactive toward the surface acids that form during the H2S treatment. These surface acids also promote the degradation of the CdS nanopaticles. However, the CdS particles in the mesopores can be stabilized by washing out the acid sides or aging the samples for a period of time before the H2S reaction. The optical absorption edge of the CdS nanoparticle in the pores is sensitive to the composition and structure of the host. In this context, the materials were characterized using FTIR, micro-Raman, UV-visible absorption spectroscopy, POM, TEM, and PXRD techniques.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:24:15Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2005en
dc.identifier.doi10.1021/cm048484ben_US
dc.identifier.issn0897-4756
dc.identifier.urihttp://hdl.handle.net/11693/24109
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/cm048484ben_US
dc.source.titleChemistry of Materialsen_US
dc.subjectAnisotropyen_US
dc.subjectCompositionen_US
dc.subjectCrystalline materialsen_US
dc.subjectFilmsen_US
dc.subjectLight absorptionen_US
dc.subjectNanostructured materialsen_US
dc.subjectSilicaen_US
dc.subjectSurface active agentsen_US
dc.subjectSynthesis (chemical)en_US
dc.subjectMesoporous silicaen_US
dc.subjectMesostructured nanocompositesen_US
dc.subjectMetal saltsen_US
dc.subjectSilica filmsen_US
dc.subjectCadmium sulfideen_US
dc.titleOne-pot synthesis of CdS nanoparticles in the channels of mesosructured silica films and monolithsen_US
dc.typeArticleen_US

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