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Preparation method of Cf/SiCnws/Ni composite material

A technology of composite materials and nickel sources, applied in nanotechnology for materials and surface science, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of long preparation cycle and complicated preparation process, and achieve The effect of short preparation cycle, low process cost and large aspect ratio

Pending Publication Date: 2022-08-05
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process of this method is complex and the preparation cycle is long

Method used

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  • Preparation method of Cf/SiCnws/Ni composite material
  • Preparation method of Cf/SiCnws/Ni composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Mix 4 ml of ethanol and 9 ml of tetrahydrofuran, stir evenly to obtain a mixed solvent; slowly add 1 g of polyvinylpyrrolidone and 1 g of polycarbosilane to the mixed solvent, stir evenly at room temperature, add 2 mmol of nickel acetate tetrahydrate, and stir for 12 hours to obtain blue-green Viscous solution, i.e. precursor solution;

[0043] 2) Electrospinning the prepared precursor solution, the distance between the needle and the collector in the electrospinning process is 15cm, the voltage is 16kv, and the rotational speed is 700r / min; the carbon nanofiber precursor is obtained;

[0044] 3) The carbon nanofiber precursor was heated to 280°C at a heating rate of 1°C / min, pre-oxidized at 280°C for 2 hours, and then cooled to room temperature with the furnace; then carbonized at a high temperature of 1300°C, with a heating rate of 5°C / min. After reaching 1000 °C and then rising to 1300 °C at 3 °C / min, the high temperature carbonization reaction time is 2 h, and th...

Embodiment 2

[0046] 1) Mix 3ml of ethanol and 9ml of tetrahydrofuran, stir evenly to obtain a mixed solvent; slowly add 1 g of polyvinylpyrrolidone and 1 g of polycarbosilane to the mixed solvent, stir evenly at room temperature, add 2 mmol of nickel acetate tetrahydrate, and stir for 12 hours to obtain a blue-green sticky solution. Thick solution, that is, the precursor solution;

[0047] 2) Electrospinning the prepared precursor solution, the distance between the needle and the collector in the electrospinning process is 15cm, the voltage is 16kv, and the rotational speed is 600r / min; the carbon nanofiber precursor is obtained;

[0048] 3) The carbon nanofiber precursor was heated to 280°C at a heating rate of 1°C / min, and pre-oxidized at 280°C for 2 hours; after carbonization at a high temperature of 1300°C, the heating rate was raised to 1000°C at a heating rate of 5°C / min and then at 3°C. / min was raised to 1300°C, the reaction time was 1h, and then cooled to room temperature with the...

Embodiment 3

[0050] 1) Mix 4ml of ethanol and 9ml of tetrahydrofuran, stir evenly to obtain a mixed solvent; slowly add 1g of polyvinylpyrrolidone and 1g of polycarbosilane, stir at room temperature and then add 3mmol of nickel acetate tetrahydrate, and stir for 12h to obtain a blue-green viscous solution , the precursor solution;

[0051] 2) Electrospinning the prepared precursor solution, the distance between the needle and the collector in the electrospinning process is 16cm, the voltage is 16kv, and the rotational speed is 700r / min; the carbon nanofiber precursor is obtained;

[0052] 3) The carbon nanofiber precursor was heated up to 300°C at a heating rate of 1°C / min, pre-oxidized at 300°C for 3 hours, and then cooled to room temperature with the furnace; after carbonization at a high temperature of 1400°C, the heating rate was 5°C / min. After reaching 1000°C, the temperature was raised to 1400°C at 3°C / min, the reaction time was 2h, and then cooled to room temperature with the furnac...

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Abstract

The invention provides a preparation method of a Cf / SiCnws / Ni composite material, which comprises the following steps: 1) adding a carbon source, a silicon source and a nickel source into a solvent, and uniformly stirring to obtain a precursor solution; 2) performing electrostatic spinning on the precursor solution to prepare a carbon nanofiber precursor containing a silicon source and a nickel source; and 3) carrying out pre-oxidation and high-temperature carbonization on the carbon nanofiber precursor containing the silicon source and the nickel source to obtain the Cf / SiCnws / Ni composite material. The required raw materials are easy to obtain, other process assistance is not needed, the target product can be obtained only through an electrostatic spinning technology and a heat treatment method, the process is simple, operation is convenient, the preparation period is short, the process cost is low, and the method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of nano-composite materials, in particular to a preparation method of a Cf / SiCnws / Ni composite material, and the prepared material can be applied to the field of organic wastewater treatment. Background technique [0002] Carbon-based catalysts consist of carbon compounds or carbon composites. Due to the ubiquity of carbon materials, carbon-based catalysts such as graphite, carbon fiber, activated carbon, and silicon carbide have received extensive attention from researchers. In recent years, research has mainly focused on improving basic carbon materials, and the main development direction is the nanometerization of carbon materials. Compared with bulk materials, nano-sized carbon-based catalysts have excellent properties such as reduced specific gravity, good flexibility, high specific surface area, high aspect ratio, and strong interpenetration with other substances. The product has the advantages of rich void st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/30D01F9/21C01B32/977B82Y30/00C02F101/30
CPCC02F1/00C02F1/302D01F9/21C01B32/977B82Y30/00C01P2004/16C01P2002/72C01P2004/03C02F2101/30Y02W10/37
Inventor 欧阳海波刘津凡李翠艳张晨鸽董继杰杨骞赵希责
Owner SHAANXI UNIV OF SCI & TECH
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