Journal
CRYSTENGCOMM
Volume 14, Issue 5, Pages 1874-1880Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ce06088k
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Funding
- National Natural Science Foundation of China [51025415, 50802021]
- Excellent Youth Foundation of Heilongjiang Province [JC200806]
- Ministry of Science and Technology of China [2007CB936301]
- Australian Research Council
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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.
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