dc.contributor.authorGong, Yichao
dc.contributor.authorWang, Dan Ping
dc.contributor.authorWu, Renbing
dc.contributor.authorGazi, Sarifuddin
dc.contributor.authorSoo, Han Sen
dc.contributor.authorSritharan, Thirumany
dc.contributor.authorChen, Zhong
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_US
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_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.relation.ispartofseriesDalton Transactionsen_US
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: [http://dx.doi.org/10.1039/C7DT00797C].en_US
dc.subjectP25 TiO2 Core-shell Nanoparticlesen_US
dc.titleNew insights into the photocatalytic activity of 3-D core–shell P25@silica nanocomposites : impact of mesoporous coatingen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionAccepted versionen_US

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