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Preparation method of bismuth vanadate yellow pigment for visible light catalytic sterilization and product prepared by preparation method

The technology of a yellow pigment and bismuth vanadate is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. It can solve the problems of uncharacterized copper ion antibacterial performance, complicated preparation process, and high equipment requirements, and achieve Ease of large-scale production, simple preparation process, and low synthesis temperature

Active Publication Date: 2022-01-14
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the obtained nano-copper / bismuth vanadate composite antibacterial agent has a high bactericidal rate of 99.99%, the preparation process is relatively complicated and the cycle is long, and it needs to be carried out in a high-pressure closed environment, which is difficult to control and requires high equipment. Low, and copper ion itself is a widely used antibacterial agent, which does not characterize the antibacterial performance of copper ion alone; in addition, sodium borohydride used for copper chloride reduction will produce flammable gas when it meets water, so there is a certain danger

Method used

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  • Preparation method of bismuth vanadate yellow pigment for visible light catalytic sterilization and product prepared by preparation method
  • Preparation method of bismuth vanadate yellow pigment for visible light catalytic sterilization and product prepared by preparation method
  • Preparation method of bismuth vanadate yellow pigment for visible light catalytic sterilization and product prepared by preparation method

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Embodiment 1

[0020] In this embodiment, a method for preparing a yellow pigment of bismuth vanadate for catalytic sterilization by visible light, the steps are as follows:

[0021] (1) Take by weighing 1.358g bismuth nitrate pentahydrate, 0.588g citric acid (according to molar ratio bismuth nitrate pentahydrate: citric acid=1: 1) be dissolved in the mixed solution that is made up of 30mL deionized water and 2mL dilute nitric acid, room temperature After stirring until dissolved, solution A is obtained;

[0022] (2) Weigh 0.3276g of ammonium metavanadate and dissolve it in a mixed solution consisting of 30mL of deionized water and 1mL of dilute nitric acid, stir at room temperature until dissolved to obtain solution B; then add the above solution B dropwise to solution A and mix , and adjust the pH value of the mixed solution to 7 with ammonia water, and stir for 60 minutes to obtain a bismuth vanadate precursor solution;

[0023] (3) Place the above-mentioned bismuth vanadate precursor so...

Embodiment 2

[0026] This embodiment differs from Embodiment 1 in that:

[0027] The consumption of bismuth nitrate pentahydrate is 0.3395g, the consumption of citric acid is 0.294g (according to molar ratio bismuth nitrate pentahydrate: citric acid=1: 2);

[0028] The consumption of ammonium metavanadate is 0.0819g;

[0029] The chromaticity values ​​of the bismuth vanadate yellow pigment prepared in this example are L*=71.59, a*=10.07, b*=81.18.

Embodiment 3

[0031] This embodiment differs from Embodiment 1 in that:

[0032] Using bismuth trichloride and ammonium metavanadate as bismuth source and vanadium source respectively;

[0033] The pH value in step (2) is 10; The heating temperature in step (3) is 300 ℃;

[0034] The chromaticity values ​​of the bismuth vanadate yellow pigment prepared in this example are L*=70.73, a*=12.55, b*=80.54.

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Abstract

The invention discloses a preparation method of a bismuth vanadate yellow pigment for visible light catalytic sterilization, which comprises the following steps of: dissolving bismuth salt and a combustion agent in deionized water and dilute nitric acid to obtain a solution A, and dissolving vanadium salt in deionized water and dilute nitric acid to obtain a solution B; adding the solution B into the solution A according to a molar ratio of bismuth salt to vanadium salt being 1: 1, mixing, adjusting the pH value to 5-10, and stirring to obtain a bismuth vanadate precursor solution; and heating the bismuth vanadate precursor solution to evaporate and burn the solution to obtain high-color-rendering yellow solid powder, namely the bismuth vanadate yellow pigment for visible light catalytic sterilization. The visible light catalytic sterilization bismuth vanadate yellow pigment with high color rendering and visible light catalytic sterilization performance, uniform particle size distribution and good dispersity is obtained by utilizing a self-propagating combustion method. The raw materials are low in price, the operation process is simple and easy to control, the preparation period is short, and large-scale production is easy.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a method for preparing a bismuth vanadate yellow pigment used for catalytic sterilization of visible light and a product thereof. Background technique [0002] Bismuth vanadate (BiVO 4 ) is a new type of yellow inorganic pigment. Due to its excellent properties such as non-toxicity, bright color, good light resistance and strong hiding power, it can be used to replace traditional yellow pigments containing lead, cadmium and chromium. It is widely used in food packaging, automobiles, etc. Topcoats, advanced inks and architectural coatings and other fields. At the same time, BiVO 4 It also has good photocatalysis and ion conductivity, and has important application prospects in the catalytic degradation of organic pollutants, gas sensors and supercapacitors, which has attracted extensive attention of scientific researchers. BiVO 4 As a polymorphic compou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22B01J37/08A61L2/08C01G31/00
CPCB01J23/22B01J23/002B01J37/084A61L2/088C01G31/00C01P2002/72C01P2004/03C01P2004/62C01P2006/62C01P2006/63C01P2006/64B01J35/39
Inventor 张筱君江伟辉周文娜梁健江峰冯果吴倩徐彦乔
Owner JINGDEZHEN CERAMIC INSTITUTE
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