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dc.contributor.authorYang, Yong
dc.contributor.authorWang, Guozhong
dc.contributor.authorDeng, Quan
dc.contributor.authorWang, Huiming
dc.contributor.authorZhang, Yunxia
dc.contributor.authorNg, Dickon HL
dc.contributor.authorZhao, Huijun
dc.date.accessioned2018-07-30T01:30:41Z
dc.date.available2018-07-30T01:30:41Z
dc.date.issued2014
dc.identifier.issn2046-2069
dc.identifier.doi10.1039/c4ra04787g
dc.identifier.urihttp://hdl.handle.net/10072/67593
dc.description.abstractHierarchical structure TiO2 hollow spheres composed of nanometer-sized building blocks, nanoflakes with exposed anatase (001) facets, have been synthesized with a high yield through a facile fluoride-mediated hydrothermal route. The average diameter of the resultant TiO2 hollow spheres is ∼1 μm, and the width of well-crystallized anatase phase nanoflakes is ∼50 nm. Nitrogen adsorption–desorption measurement revealed that the products have a high specific surface area of 26 m2 g−1 and abundant mesoporous structure. The TiO2 hollow spheres were used to photocatalytically degrade Cr(VI) in solution. The results indicate an enhanced photocatalytic activity compared to other TiO2 structures, owing to the high specific surface area and abundant mesoporous properties of the TiO2 hollow spheres. Besides, the presence of the reactive (001) facets also contributed to the enhanced activity; it was found that the (001) facets are more effective in the adsorption of Cr(VI) than the commonly exposed (101) facets. Furthermore, the surface fluorination of TiO2 hollow spheres was found to have a negative role in the photocatalytic removal of Cr(VI). The TiO2 hollow spheres not only can remove Cr(VI) from wastewater; they also can reduce the adsorbed toxic Cr(VI) to Cr(III), further forming oxides or hydroxides. In addition, the TiO2 hollow sphere photocatalysts with micron-scale size showed high durability in the cyclic tests.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherRSC Publications
dc.publisher.placeUnited Kingdom
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom34577
dc.relation.ispartofpageto34583
dc.relation.ispartofissue65
dc.relation.ispartofjournalRSC Advances
dc.relation.ispartofvolume4
dc.rights.retentionY
dc.subject.fieldofresearchInorganic Chemistry not elsewhere classified
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchcode030299
dc.subject.fieldofresearchcode03
dc.titleEnhanced photocatalytic activity of hierarchical structure TiO2 hollow spheres with reactive (001) facets for the removal of toxic heavy metal Cr(VI)
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2014 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorZhao, Huijun


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