Structural Characterization of Nickel Oxide Nanowires by X-ray Absorption Near-Edge Structure Spectroscopy

Zhang, Wu; Liu, C M; Guo, Lin; Hu, Ruifeng; Abbas, Mamatimin; Hu, TD; Xu, Huibi

doi:10.1021/jp0466183

Cited by 62 publications

(47 citation statements)

References 45 publications

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“…It shows a broad tail extending to the visible region [19], confirming the luminescence contribution from native defect centers. Recent reports on the PL spectral analysis of NiO nanowire [20] and NiO powder [21] have also shown the UV luminescence centered at around 3.45 and 3.2 eV, respectively, which are in agreement with the results in the present work. This kind of optical behavior in the low-dimensional systems is expected to originate from confinement effects.…”

Section: +supporting

confidence: 93%

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

Kumari

Li²,

Vannoy

et al. 2009

Cryst. Res. Technol.

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Vertically aligned and well interconnected NiO nanowalls with thin nanodiscs of cubic NiO as the in situ formed building blocks were fabricated via a template-free approach. The alkaline solution of ammonium hydroxide was used as a reductant and Ni foil as both source material and substrate for the nanowall synthesis. Surface morphology analysis confirmed the formation of 15 nm thick and 0.2−1.5 µm wide nanowalls. The nanowalls had the crystal structure of cubic NiO with their growth plane along the [111] direction. An optical band gap of about 3.8 eV for the NiO nanowalls was obtained from the optical absorption measurement. NiO nanowalls exhibited a broad UV emission band centered at around 390 nm. This simple, but efficient synthesis technique can facilitate the growth of well aligned 2D nanostructures with large surface area for possible applications in nanoscale devices.

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Section: +supporting

confidence: 93%

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

Kumari

Li²,

Vannoy

et al. 2009

Cryst. Res. Technol.

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“…Their technique may open up other applications using electron-detection schemes. XAS on nickel oxide nanowires was reported by Wu et al [133]. XANES was used to investigate both the geometric and electronic structures.…”

Section: Nanomaterials Made Ex Situmentioning

confidence: 99%

More power to X‐rays: New developments in X‐ray spectroscopy

Guo¹

2009

Laser & Photonics Reviews

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Recent developments in X-ray spectroscopy in the last decade are reviewed. A specific emphasis is placed on displaying the strong natural connection between X-ray spectroscopy and materials science. Brief explanations of several X-ray spectroscopic methods are given. X-ray spectroscopic instruments such as table-top X-ray sources are discussed in detail, whereas those employing synchrotron and other sources are briefly addressed. The spectroscopic methods and results from materials investigations are reviewed according to their positions in a 3D parameter space of time, length, and energy. New experimental measurements on atoms, molecules, nanomaterials, and bulk materials that include insulators, semiconductors, metals and magnetic materials using both static and time-resolved methods are reviewed.A typical table-top experimental setup to probe a sample using an optical pump (green color beam) -X-ray probe (purple color beam) technique. The X-ray pulses are produced by femtosecond optical pulses. Two exemplary data are displayed: One is direct imaging of plasmas generated from laser evaporation of a solid target (Imaging data) and the other is an X-ray absorption spectrum of a nickel sample (USEXAS data).

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“…NiO nanostructures with various morphologies have been reported, such as nanowire, [10,11] nanoplates, [12] nanotubes, [13,14] concave polyhedrons, [15] nanorings, [16] hollow octahedral, [17] flower-like [1,18] and hollow spheres, [19] which are complex hierarchical structures constructed with nanoscale building blocks.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of hierarchically structured NiO flower-like hollow spheres

Gao

et al. 2015

Journal of Experimental Nanoscience

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The hierarchical flower-like NiO hollow spheres were synthesised by a facile method without using any templates or surfactants. The as-prepared sample and precursor were characterised by X-ray diffraction and field emission scanning electron microscopy. The results indicated that the asprepared NiO is self-assembled hierarchically. During the assembly of NiO, the reaction time plays an important role. The flower-like NiO hollow sphere showed much higher catalytic activity than large-size NiO or hollow NiO for the oxidative dehydrogenation of ethane to ethylene due to its special structure.

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Structural Characterization of Nickel Oxide Nanowires by X-ray Absorption Near-Edge Structure Spectroscopy

Cited by 62 publications

References 45 publications

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

Vertically aligned and interconnected nickel oxide nanowalls fabricated by hydrothermal route

More power to X‐rays: New developments in X‐ray spectroscopy

Facile synthesis of hierarchically structured NiO flower-like hollow spheres

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