Show simple item record

dc.contributor.authorChen, X
dc.contributor.authorDong, W
dc.contributor.authorYao, Y
dc.contributor.authorLi, L
dc.contributor.authorHua, W
dc.contributor.authorZhuang, G
dc.contributor.authorZhao, D
dc.contributor.authorYan, S
dc.contributor.authorSong, W
dc.date.accessioned2020-10-21T00:02:12Z
dc.date.available2020-10-21T00:02:12Z
dc.date.issued2020
dc.identifier.issn0926-3373
dc.identifier.doi10.1016/j.apcatb.2020.118756
dc.identifier.urihttp://hdl.handle.net/10072/398530
dc.description.abstractA mesoporous titania (SN2) with three-dimensional (3D) large secondary mesopores (6.2 nm) highly connecting the mesochannels was prepared employing the method of first synthesizing an ordered 2D hexagonal mesoporous titania-silica nanocomposite (SN1) via “synchronous-assembly” of inorganic precursors with surfactant molecules, then “extracting silica”. Our tactic adopts a large amount of silica, a high crystallization temperature and mild silica extraction. The 3D interconnectivities of the resultant mesochannels are quite high, but the mesostructures are retained intact. Titania is fully anatase crystalline with uniform nanocrystals size (11.2 nm) and a high specific surface area (∼ 174 m2 g−1). This strategy is gentle, simple and easily reproducible. SN2 presents extremely-high photocatalytic degradation activities to anionic azo dyes like acid red 1 and reactive brilliant red X3B, which reach 55.9 and 51.1 times that of commercial P25 photocatalyst, even up to 87.0 and 84.7 times that of SN1, respectively; and far higher than that of the contrast sample (CS) possessing 3D small secondary mesopores (2.7 nm). Additionally, SN2 also displays a very high activity to microcystin-LR, which is much higher than that of P25 and CS, respectively. Our results clearly indicate that the large secondary mesopores play a key role in the great increases of activities. Moreover, our photocatalyst is considerably stable and reusable. Such results have hitherto not been seen in the literature. Furthermore, this method would pave the way for the rational design and preparation of ordered mesoporous other metal-oxides with large secondary mesopores and unexpected performances.
dc.description.peerreviewedYesen_US
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom118756
dc.relation.ispartofjournalApplied Catalysis B: Environmental
dc.relation.ispartofvolume269
dc.subject.fieldofresearchPhysical Chemistry (incl. Structural)en_US
dc.subject.fieldofresearchChemical Engineeringen_US
dc.subject.fieldofresearchEnvironmental Engineeringen_US
dc.subject.fieldofresearchcode0306en_US
dc.subject.fieldofresearchcode0904en_US
dc.subject.fieldofresearchcode0907en_US
dc.titlePreparation of mesoporous anatase titania with large secondary mesopores and extraordinarily high photocatalytic performances
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationChen, X; Dong, W; Yao, Y; Li, L; Hua, W; Zhuang, G; Zhao, D; Yan, S; Song, W, Preparation of mesoporous anatase titania with large secondary mesopores and extraordinarily high photocatalytic performances, Applied Catalysis B: Environmental, 2020, 269, pp. 118756
dc.date.updated2020-10-21T00:01:07Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Dongyuan


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record