Selected-Control Synthesis of NaV6O15 and Na2V6O16·3H2O Single-Crystalline Nanowires

Zhou, Gen‐Tao; Wang, and Xinchen; Yu, Jimmy C.

doi:10.1021/cg0496686

Cited by 69 publications

(43 citation statements)

References 58 publications

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“…1b. These morphologies are quite similar to those reported by several authors using different synthesis methods followed by hydrothermal treatment (Gao et al 2008;Zhou et al 2005;Liu et al 2005). Concerning the compound chosen as precursor, V 2 O 5 orthorhombic phase, FE-SEM image shows a microstructured morphology, Fig.…”

Section: Resultssupporting

confidence: 88%

Local structure study of vanadium pentoxide 1D-nanostructures

Avansi

Maia²,

Ribeiro

et al. 2011

J Nanopart Res

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Vanadium pentoxide (V 2 O 5 ÁnH 2 O) 1D-nanostructures as nanowires and nanorods have been obtained by decomposition of vanadium peroxide in hydrothermal conditions. Electron microscopy, Raman spectroscopy, and X-ray absorption spectroscopy (XAS) were employed to characterize the morphology and the local structure of as-obtained samples. Scanning transmission electron microscopy (STEM) revealed that the diameter of the nanowires and nanorods were found to be 10-20 and 30-40 nm, respectively. The results demonstrated that a combination of Raman and XAS techniques allowed the accurate characterization of the local structure of V 2 O 5 1D-nanostructures which are related to different morphologies. Analyses of X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra reveals that the local structure of V in the as-obtained samples is similar to the bulk V 2 O 5 (in orthorhombic phase), except for a higher degree of local symmetry within the structure of the VO 5 square pyramid. Additionally, the nanostructures prepared by this technique present a single crystalline nature and could emit visible light at room temperature which is related to the local order of V atoms of the studied samples.

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Section: Resultssupporting

confidence: 88%

Local structure study of vanadium pentoxide 1D-nanostructures

Avansi

Maia²,

Ribeiro

et al. 2011

J Nanopart Res

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“…The XRD patterns of the products are still similar which is mainly composed of orthorhombic Ca 2 Then the nanoparticles serve as the crystalline nuclei for the anisotropic growth of the calcium germanate nanocrystals. The linear growth is attributed to the preferential adsorption of nanoparticles to special crystal facets, which directs the growth of the nanoparticles into nanorods by controlling the growth rates along different crystal axes 14,15 . With the reaction going on, the smaller nanoparticles vanish at the site of the longer nanorods through an "Ostwald ripening" process due to their higher surface free energy compared with that of the longer nanorods 16,17 which is confirmed by the SEM images of Figure 5b and 5c.…”

Section: Resultsmentioning

confidence: 99%

Ca2Ge7O16 nanowires grown from CaO and GeO2

Pei

Yang

et al. 2011

Mat. Res.

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Single crystalline Ca 2 Ge 7 O 16 nanowires have been synthesized using CaO and GeO 2 as the raw materials. Various factors that affect the formation and size of the Ca 2 Ge 7 O 16 nanowires have been analyzed. The obtained products are characterized by X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The results show that the calcium germanate nanowires are composed of orthorhombic Ca 2 Ge 7 O 16 phase with the length and diameter of several dozens of micrometers and about 50 nm, respectively. Hydrothermal temperature plays an important role on the formation and growth of the Ca 2 Ge 7 O 16 nanowires. The formation process of the Ca 2 Ge 7 O 16 nanowires is initially interpreted according to the shape evolution of the products obtained from different growth conditions.

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“…Then the nanoparticles serve as the crystalline nuclei for the anisotropic growth of the Cd 2 Ge 2 O 6 nanocrystals. The linear growth is attributed to the preferential adsorption of acetate anions to special crystal facets, which directs the growth of the nanoparticles into nanorods by controlling the growth rates along different crystal axes [22,23]. The smaller nanoparticles vanish at the site of the nanorods through an "Ostwald ripening" process [24][25][26] resulting in the final formation of Cd 2 Ge 2 O 6 nanowires with the increase of the reaction time.…”

Section: Resultsmentioning

confidence: 99%

Cd₂Ge₂O₆ nanowires grown by a simple hydrothermal route

Pei¹,

Yang²,

Pei³

et al. 2011

Cryst. Res. Technol.

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Cd 2 Ge 2 O 6 nanowires have been synthesized by a simple hydrothermal route in the absence of any surfactants. The diameter and length of the Cd 2 Ge 2 O 6 nanowires with flat tips are 30-300 nm and several dozens of micrometers, respectivley. X-ray diffraction and high-resolution transmission electron microscopy results show that the nanowires are composed of monoclinic Cd 2 Ge 2 O 6 phase. The growth condition dependence results show that the formation of the Cd 2 Ge 2 O 6 nanowires undergoes three morphological changes from spherical particles to nanorods, and finally to nanowires. The photoluminescence spectrum of the Cd 2 Ge 2 O 6 nanowires exhibits three fluorescence emission peaks centered at 422 nm, 490 nm and 528 nm showing the potential application for optical devices.

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Selected-Control Synthesis of NaV₆O₁₅ and Na₂V₆O₁₆·3H₂O Single-Crystalline Nanowires

Cited by 69 publications

References 58 publications

Local structure study of vanadium pentoxide 1D-nanostructures

Local structure study of vanadium pentoxide 1D-nanostructures

Ca2Ge7O16 nanowires grown from CaO and GeO2

Cd₂Ge₂O₆ nanowires grown by a simple hydrothermal route

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Selected-Control Synthesis of NaV6O15 and Na2V6O16·3H2O Single-Crystalline Nanowires

Cited by 69 publications

References 58 publications

Local structure study of vanadium pentoxide 1D-nanostructures

Local structure study of vanadium pentoxide 1D-nanostructures

Ca2Ge7O16 nanowires grown from CaO and GeO2

Cd2Ge2O6 nanowires grown by a simple hydrothermal route

Contact Info

Product

Resources

About

Selected-Control Synthesis of NaV₆O₁₅ and Na₂V₆O₁₆·3H₂O Single-Crystalline Nanowires

Cd₂Ge₂O₆ nanowires grown by a simple hydrothermal route