Temperature dependent behavior of single walled MoO3 nanotubes: A Raman spectroscopy study

Silveira, J. V.; Batista, José Eduardo; Saraiva, G.D.; Fílho, J. Mendes; Filho, A. G. Souza; Hu, Shengsun; Wang, Xun

doi:10.1016/j.vibspec.2010.10.002

Cited by 48 publications

(21 citation statements)

References 32 publications

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“…This result is in accordance with previous studies where the orthorhombic phase is stable for other MoO 3 morphologies . The only exception was observed for single‐walled MoO 3 nanotubes …”

Section: Resultssupporting

confidence: 93%

Temperature‐dependent Raman spectroscopy study in MoO₃ nanoribbons

Silveira

Vieira

Filho

et al. 2012

J Raman Spectroscopy

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This paper reports a study of vibrational, structural and morphological properties of molybdenum oxide nanoribbons. Temperature-dependent Raman spectroscopy measurements in MoO 3 nanoribbons revealed morphological changes in the 150-350 C temperature range. No structural phase transitions were observed, thus showing that the orthorhombic phase is stable from room temperature (nanoribbons) up to 650 C (bulk-like phase) where large plates have been formed by the coalescence of the nanoribbons. The interpretation of temperature-dependent Raman data (wavenumber and linewidths) is supported by scanning electron microscopy that is used to directly probe the morphological changes in MoO 3 samples. The observed phenomena in the Raman data for MoO 3 nanoribbons can be applied to other nanomaterials.

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Section: Resultssupporting

confidence: 93%

Temperature‐dependent Raman spectroscopy study in MoO₃ nanoribbons

Silveira

Vieira

Filho

et al. 2012

J Raman Spectroscopy

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“…The 991 cm −1 peak was specified as the A g mode with the ν as Mo=O asymmetric stretching [17] for the terminal unshared oxygen [18]. The vibration peaks were in good accordance with those reported in literatures for the orthorhombic α-MoO 3 crystalline phase [17][18][19].…”

Section: Resultssupporting

confidence: 83%

Hydrothermal synthesis and electrochemical properties of α-MoO3 nanobelts used as cathode materials for Li-ion batteries

et al. 2012

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Uniform α-MoO 3 nanobelts were successfully synthesized by the hydrothermal process at 180°C for 20 h of the acidic solutions with different pH values of 0-0.75, adjusted using HCl (conc.). XRD and SEM results revealed that the pH of the precursor solutions played an important role in the phase, impurities, and morphology of the products. At the pH = 0, the perfect α-MoO 3 nanobelts with a few tens of microns long were synthesized. By the TEM characterization, orthorhombic MoO 3 has a distinctive layered structure along the [010] direction, consisting of distorted MoO 6 octahedrons connected by common corners along the [100] direction and common edges along the [001]A. Phuruangrat ( )

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“…Both modes probe the strength of the force constants between ions spanning the vdW gap. The computed vibrational frequencies based on DFT-D2 and optB88 methods are shown in Table III to agree with experimental measurements to within 10 percent 30,31 . This is an encouraging level of accuracy, suggesting that the DFT-D2 and optB88 methods represent reasonably well the competition between electrostatic and vdW forces underlying the interatomic interactions across the vdW gap in α-MoO 3 .…”

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confidence: 57%

Structural and vibrational properties ofα-MoO3from van der Waals corrected density functional theory calculations

et al. 2012

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Temperature dependent behavior of single walled MoO3 nanotubes: A Raman spectroscopy study

Cited by 48 publications

References 32 publications

Temperature‐dependent Raman spectroscopy study in MoO₃ nanoribbons

Temperature‐dependent Raman spectroscopy study in MoO₃ nanoribbons

Hydrothermal synthesis and electrochemical properties of α-MoO3 nanobelts used as cathode materials for Li-ion batteries

Structural and vibrational properties ofα-MoO3from van der Waals corrected density functional theory calculations

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Temperature dependent behavior of single walled MoO3 nanotubes: A Raman spectroscopy study

Cited by 48 publications

References 32 publications

Temperature‐dependent Raman spectroscopy study in MoO3 nanoribbons

Temperature‐dependent Raman spectroscopy study in MoO3 nanoribbons

Hydrothermal synthesis and electrochemical properties of α-MoO3 nanobelts used as cathode materials for Li-ion batteries

Structural and vibrational properties ofα-MoO3from van der Waals corrected density functional theory calculations

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Temperature‐dependent Raman spectroscopy study in MoO₃ nanoribbons

Temperature‐dependent Raman spectroscopy study in MoO₃ nanoribbons