A hierarchically assembled mesoporous ZnO hemisphere array and hollow microspheres for photocatalytic membrane water filtration

Pan, Jia Hong, Zhang, Xiwang, Du, Alan J., Bai, Hongwei, Ng, Jiawei and Sun, Darren (2012) A hierarchically assembled mesoporous ZnO hemisphere array and hollow microspheres for photocatalytic membrane water filtration. Physical Chemistry Chemical Physics, 14 20: 7481-7489. doi:10.1039/c2cp40997f


Author Pan, Jia Hong
Zhang, Xiwang
Du, Alan J.
Bai, Hongwei
Ng, Jiawei
Sun, Darren
Title A hierarchically assembled mesoporous ZnO hemisphere array and hollow microspheres for photocatalytic membrane water filtration
Journal name Physical Chemistry Chemical Physics   Check publisher's open access policy
ISSN 1463-9076
1463-9084
Publication date 2012-01-01
Sub-type Article (original research)
DOI 10.1039/c2cp40997f
Open Access Status Not Open Access
Volume 14
Issue 20
Start page 7481
End page 7489
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2013
Language eng
Formatted abstract
A mesoporous ZnO hemisphere array has been prepared via a topotactic transition of Zn4(OH)6CO3 • H2O (ZCHH) by chemical bath deposition. Each hemisphere is comprised of a radially oriented nanoflake shell grown on the hemispherical interior. Reaction time-dependent SEM analysis shows that the morphological formation of ZCHH involves a deposition–growth–secondary growth–redeposition procedure. Upon calcination, ZCHH readily decomposes to nanocrystalline wurtzite-phase ZnO without significant change in morphology, and the release of CO2 and H2O from ZCHH creates an additional mesoporous structure in both hemispherical interior and nanoflake shell. A similar process but without using a substrate has been developed for synthesis of mesoporous ZnO hollow microspheres in powder form. Both the elaborated superstructured photocatalysts consisting of mesoporous nanoflakes have been demonstrated to exhibit excellent performances in the photocatalytic membrane filtration.
Keyword Sensitized Solar Cells
Chemical Bath Deposition
Zinc Oxide Nanosheet
Nanorod Arrays
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2013 Collection
 
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