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Calcium cyanamide monodisperse nanoparticle preparation method

A technology of calcium cyanamide monodisperse nanoparticles, applied in the field of preparation of calcium cyanamide monodisperse nanoparticles

Active Publication Date: 2017-06-13
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no method for preparing CaCN by combining electrospinning technology and cyanamide technology. 2 Monodisperse Nanoparticle Reports

Method used

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  • Calcium cyanamide monodisperse nanoparticle preparation method
  • Calcium cyanamide monodisperse nanoparticle preparation method
  • Calcium cyanamide monodisperse nanoparticle preparation method

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Embodiment

[0021] Embodiment: 1.5007g Ca(NO 3 ) 2 4H 2 O was added to 4.0174g deionized water, magnetically stirred to dissolve completely, then 7.9826g DMF was added, then 1.5016g PVP was added, and stirring was continued for 6h to obtain a colorless and transparent spinning solution; the spinning solution was injected into a 1mL plastic spray gun Into the 10mL syringe of the head, insert the graphite rod into the spinning solution, connect the graphite rod and the positive terminal of the high-voltage DC power supply with a copper wire, connect the ground wire terminal of the high-voltage DC power supply with the vertically placed barbed wire with a copper wire and ground , wire mesh is used as the receiving device for composite nanofibers, the angle between the spray gun head and the horizontal plane is 15°, the distance between the spray gun head and the wire mesh of the receiving screen is 15cm, the spinning voltage is 13kV, the indoor temperature is 20-25°C, and the relative humid...

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Abstract

The present invention relates to a calcium cyanamide monodisperse nanoparticle preparation method, and belongs to the technical field of nanometer material preparation, wherein CaCN2 monodisperse nanoparticles are prepared by combining an electrospinning technology and a cyanogen ammoniation method. The preparation method comprises: (1) preparing a spinning liquid; (2) preparing PVP / Ca(NO3)2 composite nano-fibers by using an electrostatic spinning technology; (3) carrying out high temperature heat treatment on the PVP / Ca(NO3)2 composite nano-fibers to obtain CaCO3 nano-fibers; and (4) carrying out cyanogen ammoniation on the CaCO3 nano-fibers by using graphite boat and ammonia gas to obtain the CaCN2 monodisperse nanoparticles, wherein the obtained CaCN2 monodisperse nanoparticles have good crystallinity, belong to a trigonal system, and have the diameter of 250+ / -0.27 nm. According to the present invention, the preparation method is simple and easy to perform, is suitable for batch production, and has broad application prospect.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a preparation method of calcium cyanamide monodisperse nanoparticles. Background technique [0002] Calcium cyanamide CaCN 2 It is an important nitrogen fertilizer and can also be used as a defoliant and herbicide; in the chemical industry, calcium cyanamide is a raw material for the preparation of cyanamide, dicyandiamide, melamine and substituted triazines, and these compounds can be further processed into thiourea and guanidine. In the iron and steel industry, calcium cyanamide is directly used as a nitriding agent for carbon steel and low alloy and a desulfurizer for pig iron, and can also be used as an etching agent to reduce the corrosion of steel by salt water. In terms of waste treatment, calcium cyanamide can be used to remove formaldehyde in wastewater. Another important use of calcium cyanamide is to manufacture pesticides, such as molluscicides. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C3/18B82Y40/00
CPCC01C3/18C01P2002/72C01P2002/85C01P2004/03C01P2004/52C01P2004/62
Inventor 常立民常龙赵翠梅薛向欣林雪王海瑞
Owner JILIN NORMAL UNIV
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