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In situ Precursor-Template Route to Semi-Ordered NaNbO 3 Nanobelt Arrays

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ABSTRACT

We exploited a precursor-template route to chemically synthesize NaNbO3 nanobelt arrays. Na7(H3O)Nb6O19·14H2O nanobelt precursor was firstly prepared via a hydrothermal synthetic route using Nb foil. The aspect ratio of the precursor is controllable facilely depending on the concentration of NaOH aqueous solution. The precursor was calcined in air to yield single-crystalline monoclinic NaNbO3 nanobelt arrays. The proposed scheme for NaNbO3 nanobelt formation starting from Nb metal may be extended to the chemical fabrication of more niobate arrays.

No MeSH data available.


a XRD patterns of Na7(H3O)Nb6O19·14H2O nanobelts. The peak corresponding to remnant Nb is marked. b IR spectrum of Na7(H3O)Nb6O19·14H2O precursor.
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Figure 1: a XRD patterns of Na7(H3O)Nb6O19·14H2O nanobelts. The peak corresponding to remnant Nb is marked. b IR spectrum of Na7(H3O)Nb6O19·14H2O precursor.

Mentions: Hydrothermal technique has been most popular and widely used in the synthesis of advanced materials of different disciplines owing to its advantages in terms of high reactivity of reactants, formation of metastable and low energy consumption. In our scheme, Na7(H3O)Nb6O19·14H2O nanobelts were firstly synthesized under mild hydrothermal conditions. XRD pattern of the obtained product is shown in Figure 1a. The major diffraction peaks can be indexed as the Na7(H3O)Nb6O19·14H2O with an orthorhombic lattice (JCPDS card no. 84-0188). The broad diffractive peaks are attributed to the nanosize of the sample. Moreover, a characteristic diffraction peak from remnant Nb foil is detected. The molecular structure of Na7(H3O)Nb6O19·14H2O is further supported by the solid-state IR spectrum (Figure 1b), which is in agreement with the literature values [24].


In situ Precursor-Template Route to Semi-Ordered NaNbO 3 Nanobelt Arrays
a XRD patterns of Na7(H3O)Nb6O19·14H2O nanobelts. The peak corresponding to remnant Nb is marked. b IR spectrum of Na7(H3O)Nb6O19·14H2O precursor.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211187&req=5

Figure 1: a XRD patterns of Na7(H3O)Nb6O19·14H2O nanobelts. The peak corresponding to remnant Nb is marked. b IR spectrum of Na7(H3O)Nb6O19·14H2O precursor.
Mentions: Hydrothermal technique has been most popular and widely used in the synthesis of advanced materials of different disciplines owing to its advantages in terms of high reactivity of reactants, formation of metastable and low energy consumption. In our scheme, Na7(H3O)Nb6O19·14H2O nanobelts were firstly synthesized under mild hydrothermal conditions. XRD pattern of the obtained product is shown in Figure 1a. The major diffraction peaks can be indexed as the Na7(H3O)Nb6O19·14H2O with an orthorhombic lattice (JCPDS card no. 84-0188). The broad diffractive peaks are attributed to the nanosize of the sample. Moreover, a characteristic diffraction peak from remnant Nb foil is detected. The molecular structure of Na7(H3O)Nb6O19·14H2O is further supported by the solid-state IR spectrum (Figure 1b), which is in agreement with the literature values [24].

View Article: PubMed Central - HTML - PubMed

ABSTRACT

We exploited a precursor-template route to chemically synthesize NaNbO3 nanobelt arrays. Na7(H3O)Nb6O19·14H2O nanobelt precursor was firstly prepared via a hydrothermal synthetic route using Nb foil. The aspect ratio of the precursor is controllable facilely depending on the concentration of NaOH aqueous solution. The precursor was calcined in air to yield single-crystalline monoclinic NaNbO3 nanobelt arrays. The proposed scheme for NaNbO3 nanobelt formation starting from Nb metal may be extended to the chemical fabrication of more niobate arrays.

No MeSH data available.