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A kind of preparation method and application of self-dispersing nano bismuth vanadate

A bismuth vanadate self-dispersing technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of unstable dispersion and limited application, and achieve good dyeing performance, UV protection performance modification, good The effect of stabilizing performance

Active Publication Date: 2021-02-09
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Bismuth vanadate is a relatively cheap, stable and non-toxic pigment with excellent hiding power, weather resistance and gloss retention. After surface stabilization treatment, it can resist strong acid and strong alkali, and has excellent organic resistance. Solvent performance, it can be well mixed with organic casting materials at high temperature, so that the size of the product is stable, the dispersibility is much better than organic pigments, and it will not migrate in plastics, and there is no adverse reaction in animal experiments. It is an excellent new generation environment Friendly yellow pigment, but due to the strong hydrophobic force and van der Waals force between bismuth vanadate particles, its dispersion and instability in water-based systems limit its application in the textile industry

Method used

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  • A kind of preparation method and application of self-dispersing nano bismuth vanadate
  • A kind of preparation method and application of self-dispersing nano bismuth vanadate
  • A kind of preparation method and application of self-dispersing nano bismuth vanadate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of bismuth vanadate: mix 5.0mmol of bismuth nitrate pentahydrate and 5.0mmol of ammonium metavanadate evenly and grind them in an agate mortar until the powder forms a reddish-brown slurry, then stop grinding and transfer to a corundum crucible Then put it into an oven with a temperature of 120°C and dry it continuously for 12 hours, take out the dried product, wash it with absolute ethanol and distilled water for 3 times, and then put it into a high-speed centrifuge for centrifugation (centrifugation at 8000r / min) 20min), the product obtained after centrifugation was dried in a vacuum oven at 70°C for 4h, and the final product was a bismuth vanadate sample.

[0043] (2) Preparation of modified solution: Add 0.228g AGE, 0.714g KH590, 0.1g photoinitiator (isobutyl alcohol ketone) into 30ml ethanol solution, put it on a magnetic stirrer and stir it in the dark for 10min, then put it on Continue stirring for 30 min while irradiating with ultraviolet light u...

Embodiment 2

[0052] The value of the Zeta potential is related to the dispersion stability in the colloidal state. The higher the Zeta potential, the greater the electrostatic repulsion between particles, and the more stable the dispersion system. 0~±5 precipitates quickly, ±10~±20 has poor stability, ±20~±30 has average stability, and ±30~±40 has good stability.

[0053] On the basis of Example 1, explore the addition molar ratio of (3-acrylamidopropyl) trimethylammonium chloride and allyl glycidyl ether (respectively 3:0, 3:1, 3:2, 3 : 3) the impact on the dispersion stability of self-dispersing nano bismuth vanadate, measure potential data, the results are shown in Table 3.

[0054] table 3

[0055]

[0056] As can be seen from Table 3, the Zeta potential of the unmodified bismuth vanadate particles is negatively charged, and the stability is very poor, while the Zeta potential of the modified bismuth vanadate particles is as high as 45.2, which has good stability . It may be that...

Embodiment 3

[0059] The prepared 0.12g modified BiVO 4 Ultrasonic disperse into 50mL water, add 1g sodium carbonate, stir and mix evenly, add 1g cotton fabric, place in a vibrating water bath for dyeing. Dye at a dyeing temperature of 40°C for 30 minutes, then raise the temperature to 80°C at a rate of 2°C / min, and then continue to dye for 30 minutes. After dyeing, put the cotton fabric in an oven and dry it at 80°C. Bake at 150°C for 2 minutes. Finally, the dyed cotton fabric is soaped, dried, washed with water and finally dried again.

[0060] Cut the dyed cotton sample, which is 11cm long and 6cm wide. Use a needle to remove 5mm lines on the top, bottom, left, and right sides of the cloth strip, so that the length of the test complete cotton cloth is 10cm, and the width is 5cm. The upper and lower ends are clamped into the instrument for testing Take a 5cm × 5cm bleached cotton sample and clamp it on the friction head, clamp the dyed cotton to be tested on both ends of the bottom plat...

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Abstract

The invention discloses a preparation method and application of self-dispersing nano-bismuth vanadate, comprising: preparing allyl glycidyl ether modified alcohol solution and (3-acrylamidopropyl) trimethylammonium chloride modified alcohol solution , the obtained allyl glycidyl ether modified alcohol solution is mixed with (3-acrylamidopropyl) trimethylammonium chloride modified alcohol solution, after adding ammonia water, dissolve in 100% of dehydrated alcohol and water composition 0.5 parts of bismuth vanadate powder, ultrasonic treatment, raising the temperature to 40°C, stirring and heat preservation for 24 hours, centrifugation, washing with ethanol, drying at 80°C to obtain the self-dispersed nano vanadium bismuth acid. The self-dispersing nano-bismuth vanadate particles prepared by the invention not only have good dispersibility, but also contain a core-shell structure. After being dyed on fabrics, they not only have very excellent anti-ultraviolet properties, but also endow the fabrics with self-cleaning properties.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a preparation method and application of self-dispersing nano bismuth vanadate. Background technique [0002] With the improvement of people's living standards and the rapid development of the economy, the problem of environmental pollution has become more and more serious. Many non-degradable organic pollutants have entered our daily life, threatening the survival of human beings and the natural environment. [0003] Bismuth vanadate (BiVO 4 ) is a substance with the characteristics of non-toxicity, stable properties, and high sunlight utilization rate. It is also a narrow-band semiconductor with relatively good performance. It can degrade organic pollutants and can catalyze the decomposition of water in the field of catalytic degradation of water. A new type of environmentally friendly photocatalyst, bismuth vanadate can promote chemical reactions under sunlight a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/00C09C3/06C09C3/08C09C3/12D06P1/673D06P3/60B82Y30/00B82Y40/00C01G31/00
CPCB82Y30/00B82Y40/00C01G31/00C09C1/0006C09C3/006C09C3/06C09C3/08C09C3/12D06P1/67316D06P3/60
Inventor 祁珍明王矿沈雪婷王梦如张瑞芝白志强刘晓玉王春霞刘丽高大伟马志鹏季萍
Owner YANCHENG INST OF TECH
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