Method for preparing nanometer trinickel nitride powder

A nano-nickel nitride technology, which is applied in the field of preparing nano-nickel nitride powder, can solve the problems of harsh reaction conditions, high raw material costs, and low product purity, and achieve good stability, simple preparation methods, and high purity. Effect

Inactive Publication Date: 2019-08-27
SHAANXI NORMAL UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The problem to be solved by the present invention is to provide a low-cost, simple preparation method and high product purity for the problems of high raw material cost, harsh reaction conditions, complicated process and low product purity in the existing preparation method of nickel nitride. The method for preparing nano-nickel nitride powder

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  • Method for preparing nanometer trinickel nitride powder
  • Method for preparing nanometer trinickel nitride powder
  • Method for preparing nanometer trinickel nitride powder

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Experimental program
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Embodiment 1

[0039] Grind and mix 1.4543g (0.005mol) nickel nitrate hexahydrate and 2.5224g (0.020mol) melamine evenly, wherein the molar ratio of nickel element to melamine is 1:4, roast at 480°C for 3 hours in a nitrogen atmosphere, cool to room temperature, Nano-nickel nitride powder is obtained.

[0040] Depend on figure 1 Visible, the XRD diffraction peak of obtained sample and standard Ni 3 The N diffraction peaks are completely consistent without any other peaks, indicating that the prepared Ni3N3 has a high purity. At the diffraction peak position with a 2θ value of 44°, the Ni3Ni crystal size calculated by the Scherrer formula is 15.7nm, which is the average value of crystal grains in the vertical direction of 44° (111 crystal plane). Depend on figure 2 and image 3 It can be seen that the prepared nickel-nitride particles are small and evenly distributed, and the interplanar spacing of nickel-nitride can be obtained from the (110) crystal plane is 0.21 nm.

Embodiment 2

[0042] Grind and mix 1.4543g (0.005mol) nickel nitrate hexahydrate and 2.5224g (0.020mol) melamine evenly, wherein the molar ratio of nickel element to melamine is 1:4, roast at 500°C for 3 hours in a nitrogen atmosphere, cool to room temperature, Obtain nano-nickel nitride powder (see Figure 4 ). The crystal size of Ni3Ni3 was calculated by Scherrer's formula at the diffraction peak position with 2θ value of 44° as 22.4nm.

Embodiment 3

[0044] Grind and mix 1.4543g (0.005mol) nickel nitrate hexahydrate and 1.8918g (0.015mol) melamine evenly, wherein the molar ratio of nickel element to melamine is 1:3, bake at 480°C for 3 hours in an argon atmosphere, and cool to room temperature , to obtain nano-nickel nitride powder (see Figure 5 ). The crystal size of Ni3Ni3 was calculated using Scherrer's formula at the position of the diffraction peak with a 2θ value of 44° to be 23.1 nm.

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Abstract

The invention discloses a method for preparing nanometer trinickel nitride powder. The method comprises the following steps: uniformly mixing nickel nitrate hexahydrate, nickel carbonate, nickel sulfate, nickel acetate tetrahydrate and urea, melamine and like nitrogen sources according to the mole ratio of the nickel element to solid nitrogen source of 1: 1 to 1: 6, and roasting for 1-6h at 300-550 DEG C in the roasting atmosphere, namely obtaining the high-purity nanometer trinickel nitride powder. The nanometer trinickel nitride powder prepared through the invention is high in purity, simplein preparation process and easy to operate, the raw material source is extensive and easy, the synthesis cost is low, the process procedure is environmentally friendly, and strong in economic practicability, and the method is a green process with industrial scale production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing nanometer nickel nitride powder. Background technique [0002] As a new type of ceramic material with hexagonal wurtzite structure, nickel nitride has attracted extensive attention from researchers and industries in recent years. Nickel nitride has the characteristics of high strength, high thermal conductivity, low linear expansion coefficient, high resistivity, low dielectric constant, good insulation properties and thermal shock resistance at room temperature, and can be used as a package for high temperature and high power devices Material. In addition, its high mechanical strength and thermal stability can be used as additives, reinforcements and catalyst supports or catalytic materials for some composite materials. In short, Ni3N3 has broad application prospects in the fields of gas sensing, material batteries, high-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/06B82Y40/00
CPCC01B21/0622B82Y40/00C01P2004/64C01P2002/72C01P2004/03C01P2004/04C01P2002/78
Inventor 刘昭铁王森望陈建刚何珍红王宽刘忠文
Owner SHAANXI NORMAL UNIV
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