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dc.contributor.authorGong, Yichaoen
dc.contributor.authorWang, Dan Pingen
dc.contributor.authorWu, Renbingen
dc.contributor.authorGazi, Sarifuddinen
dc.contributor.authorSoo, Han Senen
dc.contributor.authorSritharan, Thirumanyen
dc.contributor.authorChen, Zhongen
dc.identifier.citationGong, Y., Wang, D. P., Wu, R., Gazi, S., Soo, H. S., Sritharan, T., & Chen, Z. (2017). New insights into the photocatalytic activity of 3-D core–shell P25@silica nanocomposites : impact of mesoporous coating. Dalton Transactions, 46(15), 4994-5002. doi:10.1039/C7DT00797Cen
dc.description.abstractIn this report, a three-dimensional (3-D) network of core–shell TiO2 (P25)–mesoporous SiO2 (P25@mSiO2) nanocomposites was prepared via a controllable surfactant-assisted sol–gel method. The nanocomposites were investigated for photocatalytic reactions of organic dye degradation, water splitting, and CO2 reduction to understand the roles of the mSiO2 shell in these photocatalytic reactions. It was found that the mSiO2 shell accelerates the photodegradation of the organic dye, but dramatically reduces the photocatalytic activity of P25 in water splitting and CO2 reduction. The roles played by the mSiO2 shell in the photocatalytic reactions are summarized as: (1) effective prevention of agglomeration of P25 nanoparticles, (2) facilitating the transfer of uncharged photo-generated •OH radicals via the abundant –OH groups on the mesoporous surface, (3) provision of increased reaction sites between •OH radicals and dye molecules by its mesoporous nanostructure and large surface area, and (4) prevention of diffusion of the photo-generated charge carriers (photoelectrons and photoholes) because of its insulating nature.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.relation.ispartofseriesDalton Transactionsen
dc.rights© 2017 Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Dalton Transactions, Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].en
dc.subjectP25 TiO2 Core-shell Nanoparticlesen
dc.titleNew insights into the photocatalytic activity of 3-D core–shell P25@silica nanocomposites : impact of mesoporous coatingen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.description.versionAccepted versionen
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