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Preparation method of modified titanium dioxide powder and modified titanium dioxide powder

A titanium dioxide and powder technology, applied in titanium oxide/hydroxide, titanium dioxide, botanical equipment and methods, etc., can solve the problems of inability to realize industrialized production, low cost of chemical methods, and narrow application range, and achieve extended spectral response. The effect of interval, high yield and wide application range

Inactive Publication Date: 2017-05-31
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, physical methods can produce ultra-fine particles with easy-to-control particle size, but the required equipment is expensive; chemical methods are low in cost, simple in conditions, easy to control and adjust particle size through the process, but narrow in scope of application, long in process and low in yield , unable to achieve industrial production

Method used

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  • Preparation method of modified titanium dioxide powder and modified titanium dioxide powder
  • Preparation method of modified titanium dioxide powder and modified titanium dioxide powder
  • Preparation method of modified titanium dioxide powder and modified titanium dioxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1 provides a kind of preparation method of modified titanium dioxide powder, comprises the following steps:

[0087] S1. Mix cobalt acetate and titanium dioxide powder with a molar ratio of 1:1 and a total mass of 100g, and add 2g of stearic acid and 50g of absolute ethanol (99.7% concentration) in sequence, mix and stir evenly to obtain ball milled materials ;

[0088] S21. Take zirconia grinding balls with a mass ratio of 2:2:1:1 and particle diameters of 3mm, 5mm, 8mm, and 10mm respectively, and place them in a 500ml alumina ball mill jar in descending order of size;

[0089] S22, spread the ball-milling material with a ball-to-material ratio of 10:1 on the grinding balls, put the ball milling jar with the grinding balls and the ball milling material together with the ball milling jar with the same quality of fine sand into the planetary high-energy ball mill for ball milling, Among them, the revolution speed of the ball mill is 300r / min, the revolution a...

Embodiment 2-5

[0092] Similar to the steps in Example 1, Example 2-5 is realized only by adjusting the ball milling time in step S22, and the other conditions remain unchanged. Specifically, the ball milling times in Examples 2, 3, 4, and 5 were 1 h, 3 h, 5 h, and 10 h, respectively.

[0093] In conjunction with Examples 1-5, SEM, XRD, BET, UV-Vis-DRS and other tests were carried out on the modified titanium dioxide powder prepared in Examples 1-5. The test results are as follows: Figure 6-9 shown. The modified titanium dioxide powder prepared by the ball milling process in Examples 1-5 was used to test the antibacterial performance of Escherichia coli, and the test results are shown below.

[0094] combine Figure 6 to Figure 9 , the specific analysis is as follows: Figure 6 a-e show the particle size distribution of cobalt acetate-doped titanium dioxide powder after high-energy ball milling for 0.5-10 h. From Figure 6It can be seen that with the increase of ball milling time, the p...

Embodiment 6

[0100] Embodiment 6 provides a kind of preparation method of modified titanium dioxide powder, comprises the following steps:

[0101] S1. Mix cobalt acetate and titanium dioxide powder with a molar ratio of 1:10 and a total mass of 100g, and add 2g of stearic acid and 50g of absolute ethanol (concentration: 99.7%) in turn, mix and stir evenly to obtain ball milled materials ;

[0102] S21. Take zirconia grinding balls with a mass ratio of 2:2:1:1 and particle diameters of 3mm, 5mm, 8mm, and 10mm respectively, and place them in a 500ml alumina ball mill jar in descending order of size;

[0103] S22, spread the ball-milling material with a ball-to-material ratio of 10:1 on the grinding balls, put the ball milling jar with the grinding balls and the ball milling material together with the ball milling jar with the same quality of fine sand into the planetary high-energy ball mill for ball milling, Among them, the revolution speed of the ball mill is 300r / min, the revolution and...

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Abstract

The invention discloses a preparation method of modified titanium dioxide powder, and belongs to the technical field of material chemistry. The preparation method of the modified titanium dioxide powder comprises the following steps: (S1) firstly mixing a metal ion compound with the titanium dioxide powder, adding a dispersing agent and absolute ethyl alcohol and mixing evenly to obtain a ball-milling material; (S2) carrying out ball-milling on a ball mill tank containing a grinding ball and the ball-milling material in a ball mill; and (S3) cooling a ball-milled sample to room temperature, sequentially carrying out ultrasonic treatment, drying and grinding to obtain the modified titanium dioxide powder. The invention further discloses the modified titanium dioxide powder prepared by adopting the preparation method of the modified titanium dioxide powder. The preparation method of the modified titanium dioxide powder is simple and convenient to operate and wide in application range; the particle sizes of the titanium dioxide powder are easily regulated and controlled; the yield of the titanium dioxide powder is high; industrial production can be achieved; and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and relates to a preparation method of modified titanium dioxide powder and modified titanium dioxide powder prepared by the modified titanium dioxide powder preparation method. Background technique [0002] As a semiconductor material with photocatalytic function, titanium dioxide has the advantages of high activity, good antibacterial effect, good thermal stability, long-term effectiveness, low price and no pollution. It can be used as a catalyst, antibacterial agent, etc. The photogenerated electrons and holes generated by the excitation of pure phase titanium dioxide have a high recombination rate, low quantum efficiency, and more energy is converted into light energy or heat energy and released. Therefore, it is urgent to modify the existing pure-phase titanium dioxide by various means to improve the separation ability of photogenerated electron-hole pairs and improve its photocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047A01N59/16A01P1/00
CPCA01N59/16C01G23/08C01P2002/72C01P2002/80C01P2002/84C01P2004/03C01P2006/12C01P2006/90
Inventor 杨合赵前飞王梅时代薛菲薛向欣
Owner NORTHEASTERN UNIV
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