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Negative ion functional material as well as preparation method and application thereof

A technology of functional materials and negative ions, which is applied in the field of negative ion functional materials and their preparation, can solve the problems of large differences in the amount of negative ions released, difficult mining, and small output, and achieves excellent negative ion release performance, simple preparation process, and safe raw materials. Effect

Active Publication Date: 2022-07-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these natural minerals have the function of releasing negative ions, there are problems such as large differences in the amount of negative ions released in different places of origin, difficulty in mining, and low yield, which greatly restricts their practical application.

Method used

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  • Negative ion functional material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of negative ion functional material comprises the following steps:

[0036] 1) The Nb 2 O 5 and Li 2 CO 3 Add the ball mill in a molar ratio of 1:1, then add zirconia balls (composed of zirconia balls with particle sizes of 6mm, 4mm, 2mm and 1mm according to a mass ratio of 3:3:2:2) and deionized water. (Nb 2 O 5 and Li 2 CO 3 ), zirconia ball milling beads and deionized water are added in a ratio of 1g:1.5g:0.625mL, adjust the speed of the ball mill to 400r / min, ball mill for 5h, and then put the slurry obtained by ball milling into the blast drying oven , dried at 80°C for 24h, passed through a 100-mesh sieve, then placed in an electric furnace, heated to 760°C at a heating rate of 5°C / min, held for 4 hours, then heated to 1100°C at a heating rate of 5°C / min, held for 2h, Pass through a 100-mesh sieve to obtain lithium niobate;

[0037] 2) Lithium niobate and 5% mass fraction of polyvinyl alcohol (1788 type polyvinyl alcohol, degree of po...

Embodiment 2

[0039] A preparation method of negative ion functional material comprises the following steps:

[0040] 1) The Nb 2 O 5 and Li 2 CO 3 Add the ball mill in a molar ratio of 1:1, then add zirconia balls (composed of zirconia balls with particle sizes of 6mm, 4mm, 2mm and 1mm according to a mass ratio of 3:3:2:2) and deionized water. (Nb 2 O 5 and Li 2 CO 3 ), zirconia ball milling beads and deionized water are added in a ratio of 1g:1.5g:0.625mL, adjust the speed of the ball mill to 400r / min, ball mill for 5h, and then put the slurry obtained by ball milling into the blast drying oven , dried at 80°C for 24h, passed through a 100-mesh sieve, then placed in an electric furnace, heated to 760°C at a heating rate of 5°C / min, held for 4 hours, then heated to 1100°C at a heating rate of 5°C / min, held for 2h, Pass through a 100-mesh sieve to obtain lithium niobate;

[0041] 2) Lithium niobate and a polyvinyl alcohol (1788 type polyvinyl alcohol, degree of polymerization about...

Embodiment 3

[0043] A preparation method of negative ion functional material comprises the following steps:

[0044] 1) The Nb 2 O 5 and Li 2 CO 3 Add the ball mill in a molar ratio of 1:1, then add zirconia balls (composed of zirconia balls with particle sizes of 6mm, 4mm, 2mm and 1mm according to a mass ratio of 3:3:2:2) and deionized water. (Nb 2 O 5 and Li 2 CO 3), zirconia ball milling beads and deionized water are added in a ratio of 1g:1.5g:0.625mL, adjust the speed of the ball mill to 400r / min, ball mill for 5h, and then put the slurry obtained by ball milling into the blast drying oven , dried at 80°C for 24h, passed through a 100-mesh sieve, then placed in an electric furnace, heated to 760°C at a heating rate of 5°C / min, held for 4 hours, then heated to 1100°C at a heating rate of 5°C / min, held for 2h, Pass through a 100-mesh sieve to obtain lithium niobate;

[0045] 2) Lithium niobate and a polyvinyl alcohol (1788 type polyvinyl alcohol, degree of polymerization about ...

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Abstract

The invention discloses a negative ion functional material as well as a preparation method and application thereof. The preparation method of the negative ion functional material comprises the following steps: 1) ball-milling niobium oxide and lithium carbonate, and calcining to obtain lithium niobate; 2) dispersing magnesium oxide and a surfactant in an organic acid solution, adding ammonia water to adjust the pH value to 7-10, adding niobium oxide and lithium carbonate, carrying out ball milling, and calcining to obtain magnesium-doped lithium niobate; and 3) mixing lithium niobate or magnesium-doped lithium niobate with a polyvinyl alcohol solution, granulating, pressing into sheets, and carrying out direct current polarization and calcination to obtain the negative ion functional material. The negative ion functional material is excellent in negative ion release performance, simple in preparation process, wide in raw material source, safe, environmentally friendly and suitable for large-scale industrial production and application.

Description

technical field [0001] The invention relates to the technical field of inorganic functional materials, in particular to a negative ion functional material and a preparation method and application thereof. Background technique [0002] Negative air ions (NAI) is a general term for negatively charged single gas molecules and light ion groups, often referred to as "air vitamins". Negative air ions not only have the functions of purifying air, purifying water quality, sterilizing and inhibiting bacteria, but also have the functions of respiratory health care, promoting blood circulation, and regulating ion balance on the human body. In recent years, with the rapid development of the industry, the problem of air pollution has become more and more serious. Favorite thing. At present, most of the products on the market are endowed with the function of releasing negative ions by adding natural minerals such as tourmaline, opal, wizard stone and rare earth oxide. However, although...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/622C04B35/626
CPCC04B35/495C04B35/622C04B35/62675C04B35/62685C04B2235/3203C04B2235/3206C04B2235/602C04B2235/656C04B2235/6562C04B2235/6567Y02E60/10
Inventor 张志杰钟明峰李慧敏汤雯晶许雷义
Owner SOUTH CHINA UNIV OF TECH
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