Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing nano-zinc oxide by liquid cathode glow discharge plasma

A technology of nano-zinc oxide and glow discharge, applied in the field of nano-materials, can solve the problems of harsh conditions, high production cost, complicated preparation process, etc.

Active Publication Date: 2021-09-14
NORTHWEST NORMAL UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simple, quick and green method for synthesizing nano-zinc oxide in view of the existing defects such as complex preparation process of nano-zinc oxide, harsh conditions, high production cost, and secondary pollution. Direct preparation of nano-zinc oxide by photodischarge plasma from zinc nitrate electrolyte

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing nano-zinc oxide by liquid cathode glow discharge plasma
  • Method for preparing nano-zinc oxide by liquid cathode glow discharge plasma
  • Method for preparing nano-zinc oxide by liquid cathode glow discharge plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] use figure 1 The liquid cathode glow discharge plasma device shown. Adjust the three-dimensional mobile platform 15 so that the distance between the lower end of the platinum needle electrode 14 and the top of the capillary 8 is 1mm; 500mL of zinc nitrate solution with a molar volume concentration of 0.05mol / L is injected into the solution pool 3, and the peristaltic pump 4 is started to make the The zinc nitrate solution in the solution pool 3 enters the capillary 8 at a constant flow rate of 1mL / min, overflows from the top of the capillary 8, and contacts the lower end of the platinum needle electrode 14; turns on the DC stabilized voltage and current power supply 1, and controls the voltage between the cathode and the anode. The voltage is 550V and the current is 24mA; the DC stabilized current power supply 1, the platinum needle electrode 14 and the graphite tube 12 form a closed loop; during the glow discharge process, the solution changes from colorless to milky w...

Embodiment 2

[0051] use figure 1 The liquid cathode glow discharge plasma device shown. Adjust the three-dimensional mobile platform 15 so that the distance between the lower end of the platinum needle electrode 14 and the top of the capillary 8 is 3 mm; inject 500 mL of zinc nitrate solution with a concentration of 0.20 mol / L into the solution pool 3, and start the peristaltic pump 4 to make the solution pool The zinc nitrate solution in 3 enters the capillary 8 at a constant speed of 3mL / min, overflows from the top of the capillary 8, and contacts the lower end of the platinum needle electrode 14; turns on the DC stabilized voltage and current power supply 1, and controls the voltage between the cathode and the anode to be 610V, current 47mA; DC stabilized voltage and current power supply 1, platinum needle electrode 14 and graphite tube 12 form a closed loop; during the glow process of discharge, the solution changes from colorless to milky white, and overflows from the top of capillary...

Embodiment 3

[0053] Pick figure 1The liquid cathode glow discharge plasma device shown. Adjust the three-dimensional mobile platform 15 so that the distance between the lower end of the platinum needle electrode 14 and the top of the capillary 8 is 2mm; the zinc nitrate solution with a concentration of 0.1mol / L is injected into the solution pool 3, and the peristaltic pump 4 is started to make the solution pool 3 The zinc nitrate solution inside enters the capillary 8 at a constant speed of 6mL / min, overflows from the top of the capillary 8, and contacts with the lower end of the platinum needle electrode 14; the high-voltage DC power supply 1 is turned on, and the voltage between the cathode and the anode is controlled to be 650V and the current is 36mA, a glow is generated between the negative and positive poles to form plasma; the high-voltage DC power supply 1, the platinum needle electrode 14 and the graphite tube 12 form a closed loop; Flow downward, and flow into the liquid collect...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing nano-zinc oxide by using liquid cathode glow discharge plasma. The platinum needle tip is used as the anode, the liquid overflowing from the top of the capillary is used as the cathode, and the electrolyte containing zinc nitrate is transported to the top of the capillary under the drive of a peristaltic pump. , the graphite tube is connected to the negative pole of the power supply. When a sufficiently high voltage is applied between the two electrodes, the electrolyte is excited by high-energy electrons to generate instantaneous high temperature, local high pressure, accompanied by luminescence and heat generation, and at the same time plasma is generated, and the generated turbid liquid flows into the collector along the groove of the graphite tube, and is centrifuged. Washing with distilled water, vacuum drying to constant weight, and grinding to obtain milky white nano ZnO particles. The preparation method of the present invention has the advantages of simple equipment, easy operation, mild conditions, controllable process, no need for solvent, good morphology of the synthesized nano-ZnO, high product purity, no pollution and easy separation of products; liquid cathode glow discharge plasma is An environmentally friendly green new technology for preparing nano-ZnO.

Description

technical field [0001] The invention belongs to the technical field of nano-materials, relates to a preparation method of nano-zinc oxide, and in particular relates to a method of producing Zn(NO 3 ) 2 A method for directly preparing nanometer zinc oxide from a solution. Background technique [0002] Nano-ZnO particles are a new type of multifunctional inorganic material, which has a wide band gap (3.7eV) and a large exciton binding energy (6.0 eV). A material with unique properties. Nano-ZnO has been widely used in electronics, photocatalytic degradation of organic pollutants, ceramics, gas sensors, cosmetics and other fields due to its good photoelectric performance, gas sensing performance and catalytic performance. In recent years, reports on the preparation methods of nano-ZnO have been emerging, which has become a research hotspot at home and abroad. [0003] The methods for preparing nano zinc oxide in the prior art mainly include: electrochemical method, hydrothe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/01C01G9/02B82Y40/00
CPCB82Y40/00C01G9/02C25B1/00
Inventor 俞洁康月静陆泉芳卢转红银玲
Owner NORTHWEST NORMAL UNIVERSITY