Role of crystallinity on the optical properties of Na2V6O16·3H2O nanowires

Avansi, Waldir; Maia, Lauro J. Q.; Mourão, Henrique A.J.L.; Ribeiro, Cauê

doi:10.1016/j.jallcom.2017.10.121

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…But all the three temperatures of samples has higher absorption coefficient and its indicated density of electron absorb by medium of material. The absorbed by the materials is converted into heat of the material due to which electron is excited by photon energy and electron-hole fusion is formed [13]. So green synthesized CuO nanoparticles of 400oC and 500 o C temperatures of higher edge absorption exhibited 1.7ev of photon energy and 450 o C temperature of higher edge absorption exhibited 1.5eV.…”

Section: Absorption Coefficientmentioning

confidence: 99%

Optical Conductivity Analysis of Green CuO Nanoparticles Using Plant Leaf Extract

Arunkumar,

Meenakshi,

Thamarai selvi

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The optical properties of green synthesized CuO nanoparticles such as absorption coefficient, refractive index, band gap, dielectric constant and optical conductivity were analyzed. XRD shows that upon temperature treatment of green CuO nanoparticles, the crystal size increases and thus the crystallinity increases due to the decrease in the number of crystals per unit area. Due to the high crystallinity, the absorption coefficient exhibits a high electronic shift and the refractive index exhibits good polarization of the ions. Thus the dielectric constant of the real and imaginary regions decreases as the photon energy increases. Higher temperatures exhibit higher photon energy levels. Optical conductivity has induced electron annihilation due to the absorption coefficient of increased photo energy light; Hence the optical conductivity analysis of Lantana camara capped CuO nanoparticles indicated the stability of electrical conductivity with increase in photo power.

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Section: Absorption Coefficientmentioning

confidence: 99%

Optical Conductivity Analysis of Green CuO Nanoparticles Using Plant Leaf Extract

Arunkumar,

Meenakshi,

Thamarai selvi

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…)-based metal vanadates and investigate their energy storage applications. Among various alkali metal vanadates, sodium vanadates (Na 2 V 6 O 16 or NVO) have been extensively studied for metal ion batteries and photocatalytic applications. − To the best of our knowledge, no reports are available on NVO nanobelt electrode materials for SC applications. Therefore, we attempt to synthesize NVO nanobelts and investigate their electrochemical SC performance in this work.…”

Section: Introductionmentioning

confidence: 99%

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

Vedpathak

Shinde

Desai

et al. 2023

ACS Appl. Energy Mater.

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The one-dimensional (1D) transition metal oxide (TMO) nanostructures have significant advantages in electrochemical energy storage fields. To date, simplifying the processing techniques and improving the yield without compromising the quality are one of the top priorities in pushing these TMO materials for scalable energy storage applications. This study presents a simple ultrasonic-assisted chemical route to prepare Na 2 V 6 O 16 (NVO) nanobelts. The X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, and transmission electron microscopy characterizations are used to confirm the formation of 1D NVO nanobelt structures. The growth mechanism for the formation of NVO nanobelts is also provided. Moreover, these synthesized NVO nanobelts are used as an electrode material for supercapacitor (SC) applications, which exhibit a specific capacitance of 455 F g −1 at 0.5 A g −1 with typical capacitive behavior. An asymmetric coin cell SC device of activated carbon//NVO is also fabricated. This fabricated device delivers a high energy density of 42.4 W h kg −1 and a high power density of 4.3 kW h kg −1 , along with 80% capacity retention after 5000 cycles. The 1D NVO nanobelt structures can be considered a promising cathode material with superior rate capability and high capacitance for SC applications.

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An investigation on plant cell walls during biomass pyrolysis: A histochemical perspective on engineering applications

Sharmin

Pang

2023

Applied Energy

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Role of crystallinity on the optical properties of Na2V6O16·3H2O nanowires

Cited by 3 publications

References 44 publications

Optical Conductivity Analysis of Green CuO Nanoparticles Using Plant Leaf Extract

Optical Conductivity Analysis of Green CuO Nanoparticles Using Plant Leaf Extract

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

An investigation on plant cell walls during biomass pyrolysis: A histochemical perspective on engineering applications

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