Synthesis and characteristics of NiO nanoparticles by thermal decomposition of nickel dimethylglyoximate rods

Li, Xueliang; Zhang, Xiaoxi; Li, Zirong; Qian, Yitai

doi:10.1016/j.ssc.2006.01.031

Cited by 118 publications

(61 citation statements)

References 22 publications

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“…Thermal decomposition Thermal decomposition method, based on decomposition of metal salts or metal oxides through heating, is theoretically and experimentally simple. To the best of our knowledge, there have been many metal oxides nanoparticles, such as Fe 2 O 3 , NiO, Co 3 O 4 and ZnO [84][85][86][87], synthesized via thermal decomposition method. However, there are not many reports on synthesizing ZnO quantum dots with ultra small size [45][46][47][48][49][50].…”

Section: Chemical Methods On Synthesis Of Zno Qdsmentioning

confidence: 99%

Synthesis, Self-assembly and Optoelectronic Properties of Monodisperse ZnO Quantum Dots

Mei¹,

Hu²

2011

Optoelectronic Devices and Properties

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Section: Chemical Methods On Synthesis Of Zno Qdsmentioning

confidence: 99%

Synthesis, Self-assembly and Optoelectronic Properties of Monodisperse ZnO Quantum Dots

Mei¹,

Hu²

2011

Optoelectronic Devices and Properties

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“…[5][6][7][8][9] An easy and economical way to prepare green coloured NiO nanoparticles is the sol-gel technique that is used in this work. It is widely used to prepare bulk metal oxides but the number of cases where it is employed for the preparation of nanoparticles is still indeed very small due to lack of proper synthetic protocol.…”

Section: Preparation Of the Samplesmentioning

confidence: 99%

Positron annihilation studies of defects and fine size effects in nanocrystalline nickel oxide

Das¹,

Mandal

Roy

et al. 2013

Journal of Experimental Nanoscience

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Ultrafine nickel oxide nanoparticles were prepared by sol-gel method using a solution of nickel nitrate hexahydrate and ammonium hydroxide and subsequently annealed in air at different temperatures in the range 200-275 C for different hours to vary the particle sizes. They were characterised for phase, purity, structure and sizes by X-ray diffraction and high-resolution transmission electron microscopy. They were found polycrystalline in nature and possessed face-centred cubic (NaCl-type) structure with lattice parameter varying with annealing temperature. The ultrafine structure clearly revealed the formation of hexagons with average diameter about 5 nm. Ultraviolet-visible absorption spectroscopy was carried out to study the optical properties and for the estimation of the bandgap. The nanoparticles exhibited weak and strong quantum confinement in the size ranges of 10.47-8.47 and 6.57-5 nm. The samples were then investigated through positron annihilation spectroscopy to characterise and closely monitor the evolution of vacancy-type defects and defect clusters during particle growth in the samples. The positron lifetime drastically increased at very low particle sizes, supporting the confinement effects demonstrated by optical absorption studies. The results from coincidence Doppler broadening measurements were consistent and indicated changes also in the electron momentum distribution during the occurrence of these finite size effects in the nanoparticles.

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“…In the literature, various methods have been reported for the synthesis of nanocrystalline NiO from different starting materials for some valuable applications. Most of these methods are; thermal decomposition [21,22], carbonyl method, sol-gel technique [23], microwave pyrolysis [24], solvothermal [25], anodic arc plasma [26], Sonochemical [27], precipitation-calcination [28] and microemulsion [29]. However, mostly these are high-temperature and high-pressure methods; rely on surface-capping agents or demand for organic-metallic precursors and seems to be expensive for an industrial scale application.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Pyramid-Shaped NiO Nanostructures using Low-Temperature Composite- Hydroxide- Mediated Approach

Shahid¹,

Khan²,

Zakria³

et al. 2016

J Material Sci Eng

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Composite-hydroxide-mediated (CHM) approach was used to synthesize NiO nanocrystals. The proposed method makes use of molten composite hydroxides; providing reaction media and lower the process temperature. Processing temperature and reaction time are the two potential parameters to control the growth of a nanomaterial. The method was used at temperatures in the range of 180-250°C and formation of the nanomaterial was monitored using XRD, SEM, EDX, FTIR, and UV-visible spectroscopy. The produced nanomaterial was purely polycrystalline with an average crystallite size in the range of 23.71-36.92 nm. Method suggested formation of pyramid shaped NiO nanocrystals in the temperature range 220-250°C. Evidence on the elemental composition, purity, and chemical bonding were obtained from EDX and FTIR analysis respectively. Estimation on direct bandgap was made from the optical analysis and found to be in the range 4.0-4.8 eV. The method is attractive and seems a cost effective route for the growth of transition metal oxides for research purpose. For further efficacy, the approach can be examined for other technologically significant nanostructures.

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Synthesis and characteristics of NiO nanoparticles by thermal decomposition of nickel dimethylglyoximate rods

Cited by 118 publications

References 22 publications

Synthesis, Self-assembly and Optoelectronic Properties of Monodisperse ZnO Quantum Dots

Synthesis, Self-assembly and Optoelectronic Properties of Monodisperse ZnO Quantum Dots

Positron annihilation studies of defects and fine size effects in nanocrystalline nickel oxide

Synthesis of Pyramid-Shaped NiO Nanostructures using Low-Temperature Composite- Hydroxide- Mediated Approach

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