Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 10, Pages 3918-3925Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp110660v
Keywords
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Funding
- National Natural Science Foundation of China [50972130, 20701033, 50772100, 10874153]
- Qianjiang Talent Program of Zhejiang Province [QJD1002001]
- China Postdoctoral Science Foundation [201003048, 20090450292]
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University
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Well-defined perovskite MTiO3 (M = Ba, Sr, Ca and Mg) nanostructures were successfully synthesized by a convenient hydrothermal method, employing MCl2 as M source and titanate nanowire as Ti precursor. Different perovskite nanostructures such as nanoring nanobowl, nanotube, and nanodisk were successfully prepared. Two types of growth mechanisms were proposed by investigating the formation processes of MTiO3 nanostructures. The formation of MTiO3 (M = Ba and Sr) undergoes a nanowire-tube-ring growth mechanism with a self-sacrifice of titanate nanowire framework rout, whereas the formation of CaTiO3 and MgTiO3 structures follows, a simultaneous epitaxial growth Of TiO2 nanotube on titanate nanowire and self nucleation of MTiO3 (M = Mg and Ca) in the solution initially, and then a conversion of the nanowire and nanotube to MgTiO3/CaTiOa3 nanostructure process. The electrical properties of the perovskite MTiO3 nanostructure including polarization -field hysteresis and capacitance voltage characteristics were also investigated.
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