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Preparation of MgO nano particle material

A technology of nanoparticles and particles, applied in the direction of magnesium oxide, etc.

Inactive Publication Date: 2009-01-21
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

So far, there is no report on the preparation of MgO nanoparticles by arc discharge method in liquid nitrogen medium under non-vacuum conditions.

Method used

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  • Preparation of MgO nano particle material
  • Preparation of MgO nano particle material
  • Preparation of MgO nano particle material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The preparation device that the present invention adopts sees figure 1 , including DC output power supply, arc discharge device, container, etc. In the arc discharge device, the anode is supplied through the stepping motor, and the stepping motor is controlled by the stepping motor controller, and the control circuit is used to monitor the feeding speed of the cathode and anode , so that the controller can adjust the feed speed in time. A self-feedback system is used to control the speed at which the stepper motor automatically supplies the anode; the self-feedback system includes a control circuit and a stepper motor controller; the cathode and the anode are respectively fixed by a holder, and the detection signal input terminals of the control circuit are respectively connected to the cathode and the anode. For the anode holder, the control signal input end of the stepper motor controller is connected to the output end of the control circuit, and the control signal ou...

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Abstract

The invention provides a method for preparing MgO nanometer granular materials, belonging to the technical field of granular material preparation. The method is characterized in that under a non-vacuum condition, MgO nanometer granules are prepared by adopting methods of arc discharge and pure magnesium anode self-consumption in a liquid nitrogen medium, wherein the end face of a cathode is provided with an inner hole; an anode is arranged in the inner hole of the end part of the cathode for starting arc and discharging electricity, so as to gasify a magnesium rod to obtain magnesium atoms; moreover, the MgO nanometer granules are synthesized by utilizing a gaseous magnesium environment formed in the inner hole of the cathode after the anode is placed in the liquid nitrogen solution and by utilizing a low-temperature environment provided by liquid nitrogen. The method has the advantages of simple equipment and controllable technological parameters. As raw materials needed in the preparation are industrial pure magnesium rods, the method is rich in the raw materials and low in cost. A MgO nanometer granule prepared is in a spherical body, a spherical-like body, a cubic body or a cubic-like body, and causes no other pollution.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation. It particularly relates to nanometer metal oxide materials, and is a method for preparing nanometer MgO materials with high surface activity, catalytic performance and antibacterial and antibacterial performance. Background technique [0002] Nanomaterials have a wide range of potential applications due to their unique small size effect, surface characteristics and various excellent physical and chemical properties. MgO nanoparticles have high surface activity, so they have broad application prospects in the fields of catalysts, activators, fillers and inorganic antibacterial materials. At the same time, magnesium resources are abundant and the cost is low, which makes MgO nanoparticle materials have significant practical value. The morphology of nano-magnesium oxide particles will have a huge impact on its surface adsorption properties, so it is of great significance to ...

Claims

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Application Information

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IPC IPC(8): C01F5/04
Inventor 姚可夫范肖凌
Owner TSINGHUA UNIV
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