Ni-Ni2O3 nano composite material and preparation

A technology of nanocomposite materials and nanowires, which is applied in the direction of nanotechnology, inorganic material magnetism, etc., can solve the problems of catalytic activity, Ni ferromagnetism, etc., to improve light absorption performance, improve utilization efficiency and photocatalysis effect, overcoming the effect that is difficult to recycle

Active Publication Date: 2014-08-20
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wherein, people such as Wang provided a kind of NiNi in Journal of Alloys and Compounds567, 21-25 (2013) 2 o 3 Nanoparticles with a core-shell structure and use them for microwave absorption, in which Ni acts as a core wrapped in Ni 2 o 3 In the middle, although this structure does not affect the wave-absorbing characteristics, it will inevitably have a serious impact on the catalytic activity
In addition, Rodríguez et al. provided a kind of Ni / Ni oxide nanoparticles and its preparation method in Journal of Nanoscience and Nanotechnology 8, 3820-7 (2008), but the nanoparticle system prepared by this method is paramagnetic and does not have Exhibits the ferromagnetism that Ni itself should have

Method used

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  • Ni-Ni2O3 nano composite material and preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 2.37g NiCl 2 ·6H 2 O powder is dissolved in 50ml ethanol solution, and 0.8g NaOH is added, the mixed solution is fully stirred to make the components evenly mixed; 1ml of 80% hydrazine hydrate is added to the mixed solution, and the mixture is fully stirred; transfer the mixed solution to In an 80ml autoclave, after reacting at 200℃ for 2.5 hours, the reactor was naturally cooled to room temperature; the reactor was opened, the black precipitate at the bottom was taken out, washed with water, and dried to obtain the final Ni-Ni 2 O 3 Nanocomposite.

[0024] The morphology of the powder sample was observed using the 1530VP field emission scanning electron microscope of the German LEO company. The measurement results are as attached in the instruction manual. figure 1 Shown. It can be seen from the figure that Ni is a nanowire, and Ni 2 O 3 Exist in particle form.

Embodiment 2

[0026] 2.37g NiCl 2 ·6H 2 O powder is dissolved in 50ml ethanol solution, and 1.12g KOH is added, the mixed solution is fully stirred to make the components evenly mixed; 1ml of 80% hydrazine hydrate is added to the mixed solution, and the mixture is fully stirred; transfer the mixed solution to In an 80ml autoclave, after reacting for 3 hours at a temperature of 150°C, the reactor was naturally cooled to room temperature; the reactor was opened, the black precipitate at the bottom was taken out, washed and dried to obtain the final Ni-Ni 2 O 3 Nanocomposite.

[0027] A magnetic measuring instrument (MPMS-9) was used to measure the room temperature hysteresis loop, and the measurement results are as attached in the manual figure 2 Shown. It can be seen from the figure that the material is ferromagnetic at room temperature, and the saturation magnetization is 21.2emu / g.

Embodiment 3

[0029] 2.37g NiCl 2 ·6H 2 O powder is dissolved in 50ml of ethanol solution, and 0.8g of NaOH is added, the mixed solution is fully stirred to make the components evenly mixed; 1ml of 80% hydrazine hydrate is added to the mixed solution, and the mixture is fully stirred; transfer the mixed solution to In a 100ml autoclave, after reacting for 2 hours at a temperature of 180°C, the reactor was naturally cooled to room temperature; the reactor was opened, and the black precipitate at the bottom was taken out, washed and dried to obtain the final Ni-Ni 2 O 3 Nanocomposite.

[0030] The optical absorption spectrum was measured with Hitachi's UV-Visible Spectrophotometer (HITACHI UV-4100), and the measurement results are shown in the instructions attached. image 3 Shown. It can be seen from the figure that the sample material has strong absorption characteristics in the wavelength range from 350nm to 2300nm.

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Abstract

The invention relates to a Ni-Ni2O3 nano composite material, in particular to a ferro-magnetic Ni-Ni2O3 nano composite material and a method for hydrothermal one-step synthesis of the Ni-Ni2O3 nano composite material. Ni is in a nanowire form, and Ni2O3 is in a particle shape. Due to the joint effect of the Ni and the Ni2O3, the optical performance, the photocatalysis performance, the magnetic performance and the other performances of the Ni-Ni2O3 nano composite material are greatly improved.

Description

Technical field [0001] The invention relates to a Ni-Ni 2 O 3 Nanocomposite materials, especially a ferromagnetic Ni-Ni 2 O 3 Nanocomposite materials and methods for hydrothermal synthesis of the materials. Background technique [0002] "Nanocomposite" refers to a nanosystem composed of two or more components with different physical and chemical properties, and each component has an interface in contact with each other. In recent years, nanocomposites have attracted widespread attention due to their excellent comprehensive performance, flexible designability and huge application value. They are widely used in optics, catalysis, materials, energy, electronic information, biomedicine, environmental science, aerospace, Many fields such as national defense transportation have broad application prospects. [0003] Nickel (Ni) is an important metal material with high chemical stability and strong corrosion resistance. It can be used as a high-performance electrode material in the field ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02B22F9/24B82Y40/00H01F1/12
Inventor 程雅慧刘晖贺婕胡啸宇王卫超王维华卢峰
Owner NANKAI UNIV
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