Single crystal titanate-zirconate nanoleaf: Synthesis, growth mechanism and enhanced photocatalytic hydrogen evolution properties

Li, Zhonghua, Shen, Jun, Wang, Jian-Qiang, Wang, Dongjun, Huang, Yongjiang and Zou, Jin (2012) Single crystal titanate-zirconate nanoleaf: Synthesis, growth mechanism and enhanced photocatalytic hydrogen evolution properties. CrystEngComm, 14 5: 1874-1880. doi:10.1039/c1ce06088k


Author Li, Zhonghua
Shen, Jun
Wang, Jian-Qiang
Wang, Dongjun
Huang, Yongjiang
Zou, Jin
Title Single crystal titanate-zirconate nanoleaf: Synthesis, growth mechanism and enhanced photocatalytic hydrogen evolution properties
Journal name CrystEngComm   Check publisher's open access policy
ISSN 1466-8033
Publication date 2012-01-11
Year available 2012
Sub-type Article (original research)
DOI 10.1039/c1ce06088k
Open Access Status Not Open Access
Volume 14
Issue 5
Start page 1874
End page 1880
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Subject 1600 Chemistry
2500 Materials Science
3104 Condensed Matter Physics
Abstract A novel titanate-zirconate solid solution with controllable nanoleaf/microsisal-like three-dimensional morphology, Na-2(Ti0.75Zr0.25)(4)O-9, grows on the surface of a Ti-based bulk metallic glass by a combination of hydrothermal and dealloying processes. A single sisal-like bundle consists of a number of nano-sized leaves and each nanoleaf has a thickness, width and length of 20-30 nm, 200-300 nm and 15-20 mm, respectively. A modified dipole driving Ostwald ripening mechanism for the interesting architectures has been proposed based on a series of time-dependent experiments and the structure feature of titanate. Moreover, the as-synthesized nanoleaf/microsisal-like material exhibits extraordinary ability to produce hydrogen from a methanol/water solution that is higher than that of a commercial TiO2 (Degussa P25) film, undoping titanate nanotube film and titanate-zirconate one-dimensional nanoleaf film. Possible origins of the high performance of the as-synthesized three-dimensional nanomaterials were discussed based on theoretical and experimental results.
Formatted abstract
A novel titanate-zirconate solid solution with controllable nanoleaf/microsisal-like three-dimensional morphology, Na 2(Ti 0.75Zr 0.25) 4O 9, grows on the surface of a Ti-based bulk metallic glass by a combination of hydrothermal and dealloying processes. A single sisal-like bundle consists of a number of nano-sized leaves and each nanoleaf has a thickness, width and length of 20-30 nm, 200-300 nm and 15-20 μm, respectively. A modified dipole driving Ostwald ripening mechanism for the interesting architectures has been proposed based on a series of time-dependent experiments and the structure feature of titanate. Moreover, the as-synthesized nanoleaf/microsisal-like material exhibits extraordinary ability to produce hydrogen from a methanol/water solution that is higher than that of a commercial TiO 2 (Degussa P25) film, undoping titanate nanotube film and titanate-zirconate one-dimensional nanoleaf film. Possible origins of the high performance of the as-synthesized three-dimensional nanomaterials were discussed based on theoretical and experimental results.
Keyword Calcination Temperature
Nanotubes
Water
Degradation
Nanosheets
Nanowires
Films
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 51025415
JC200806
2007CB936301
Institutional Status UQ
Additional Notes First published on the web 11 January 2012.

 
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