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Solid State Tuning of TiO2 Morphology, Crystal Phase, and Size through Metal Macromolecular Complexes and Its Significance in the Photocatalytic Response

dc.contributor.authorAllende-González P.
dc.contributor.authorLaguna-Bercero M.Á.
dc.contributor.authorBarrientos L.
dc.contributor.authorValenzuela M.L.
dc.contributor.authorDíaz C.
dc.date.accessioned2020-09-02T22:11:07Z
dc.date.available2020-09-02T22:11:07Z
dc.date.issued2018
dc.identifier10.1021/acsaem.8b00374
dc.identifier.citation1, 7, 3159-3170
dc.identifier.issn25740962
dc.identifier.urihttps://hdl.handle.net/20.500.12728/3528
dc.descriptionA solid-state phase control of TiO2 by the use of different macromolecular complex precursors is reported for the first time. During the formation of TiO2 nanoparticles, chitosan and poly(styrene-co-4-vinylpyridine) polymers can act as solid-state template producing areas after carbonization, where the TiO2 nucleates. It seems that the location of metal centers through the polymeric chain (i.e., the distance between the metal centers) strongly influences the morphology and particle size of the photocatalyst. To demonstrate the application value of our different TiO2 structures, the photocatalytic behavior was explored. The efficient photocatalytic decoloration of methylene blue on different polymorphic forms of nanostructured TiO2 is confirmed. The best photocatalyst achieved a 98% discoloration rate in only 25 min when the pH of the solution was 9.5, improving the efficiency of the standard photocatalyst Degussa P25 without the addition of other phases or dopants. The novelty of the present work is that, by means of an appropriate synthesis, the three main factors (morphology, size, and crystalline phase) that allow modulating the photocatalytic response of titania material can be tuned simultaneously. This control has allowed an advance in the properties of the material, managing to increase the photoresponse in a short time. © 2018 American Chemical Society.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subjectmorphology
dc.subjectphotocatalysis
dc.subjectsize and crystal phase
dc.subjectsolid-state synthesis
dc.subjectTiO2 nanoparticles
dc.subjectCarbonization
dc.subjectChromium compounds
dc.subjectDyes
dc.subjectMacromolecules
dc.subjectMorphology
dc.subjectNanoparticles
dc.subjectParticle size
dc.subjectPhotocatalysis
dc.subjectPolymers
dc.subjectSilicon compounds
dc.subjectStyrene
dc.subjectSynthesis (chemical)
dc.subjectTitanium dioxide
dc.subjectCrystal phase
dc.subjectCrystalline phase
dc.subjectMacromolecular complexes
dc.subjectNano-structured TiO2
dc.subjectPhotocatalytic behaviors
dc.subjectPolymeric chain
dc.subjectPolymorphic forms
dc.subjectSolid-state synthesis
dc.subjectTiO2 nanoparticles
dc.titleSolid State Tuning of TiO2 Morphology, Crystal Phase, and Size through Metal Macromolecular Complexes and Its Significance in the Photocatalytic Response
dc.typeArticle


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