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Dysprosium and praseodymium co-doped bismuth vanadate inorganic pigment and preparation method thereof

An inorganic pigment, bismuth vanadate technology, applied in the direction of fibrous fillers, dyeing low-molecular organic compounds, etc., can solve the problems that cannot meet the application of single bismuth vanadate, achieve stable color development, uniform chemical composition, main color and harmony The effect of brightness improvement

Inactive Publication Date: 2015-01-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, these are far from satisfying the application of single bismuth vanadate in practical fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 5mmol (2.4254g) of Bi(NO 3 ) 3 ·5H 2 O dissolved to 1mol / L, 20ml of HNO 3 solution, and then add 0.1mmol (0.0457g) of Dy(NO 3 ) 3 ·6H 2 O, 0.1mmol (0.0435g) of Pr(NO 3 ) 3 ·6H 2 O and 2.5mmol (0.7306g) of ethylenediaminetetraacetic acid were stirred thoroughly to obtain solution A; 5mmol (0.7898g) of NaVO 3 2H 2 O was dissolved in 1mol / L, 20ml NaOH solution, and stirred thoroughly to obtain solution B; the above-mentioned solutions A and B were mixed and fully stirred, then transferred to a hydrothermal kettle, and microwaved at 160°C for 1 hour. Then, wash several times with deionized water and absolute ethanol, and then dry in a vacuum oven at 60°C for 12 hours to obtain a bismuth vanadate pigment co-doped with dysprosium and praseodymium, whose general formula is Bi 0.96 Dy 0.02 PR 0.02 VO 4 .

Embodiment 2

[0019] 5mmol (2.4254g) of Bi(NO 3 ) 3 ·5H 2 O dissolved to 4mol / L, 20ml of HNO 3 solution, and then add 0.1mmol (0.0457g) of Dy(NO 3 ) 3 ·6H 2 O, 0.1mmol (0.0435g) of Pr(NO 3 ) 3 ·6H 2 O and 10mmol (2.9224g) of ethylenediaminetetraacetic acid were stirred thoroughly to obtain solution A; 5mmol (0.7898g) of NaVO 3 2H 2 Dissolve O in 4mol / L, 20ml NaOH solution, and stir well to obtain solution B; mix and stir the above-mentioned A and B solutions, transfer them to a hydrothermal kettle, and microwave for 3 hours at 220°C. Then, wash several times with deionized water and absolute ethanol, and then dry in a vacuum oven at 60°C for 12 hours to obtain a bismuth vanadate pigment co-doped with dysprosium and praseodymium, whose general formula is Bi 0.96 Dy 0.02 PR 0.02 VO 4 .

Embodiment 3

[0021] 5mmol (2.4254g) of Bi(NO 3 ) 3 ·5H 2 O dissolved to 1mol / L, 20ml of HNO 3 solution, and then add 0.1mmol (0.0457g) of Dy(NO 3 ) 3 ·6H 2 O, 0.1mmol (0.0435g) of Pr(NO 3 ) 3 ·6H 2 O and 2.5mmol (0.7353g) of sodium citrate were stirred thoroughly to obtain solution A; 5mmol (0.7898g) of NaVO 3 2H 2 O was dissolved in 1mol / L, 20ml NaOH solution, and stirred thoroughly to obtain solution B; the above-mentioned solutions A and B were mixed and fully stirred, then transferred to a hydrothermal kettle, and microwaved at 160°C for 1 hour. Then, wash several times with deionized water and absolute ethanol, and then dry in a vacuum oven at 60°C for 12 hours to obtain a bismuth vanadate pigment co-doped with dysprosium and praseodymium, whose general formula is Bi 0.96 Dy 0.02 PR 0.02 VO 4 .

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Abstract

The invention discloses a dysprosium and praseodymium co-doped bismuth vanadate inorganic pigment and a preparation method thereof. The bismuth vanadate inorganic pigment has a general formula of Bil-x-yDyxPryVO4, wherein x is not less than 0.02 and not more than 0.1 and y is not less than 0.02 and not more than 0.1; the dysprosium and praseodymium co-doped bismuth vanadate pigment is prepared by chelating agents and a microwave hydrothermal method; the addition of different chelating agents is favorable for slow release of metal ions in a reaction process, so that the process of generating the dysprosium and praseodymium co-doped bismuth vanadate pigment is more slowly proceeded; the microwave hydrothermal method is used to prepare the pigment, so that the preparation time is shortened; the doping of dysprosium and praseodymium in the dysprosium and praseodymium co-doped bismuth vanadate pigment prepared by the method is favorable for improving the color generation performance of the bismuth vanadate pigment.

Description

technical field [0001] The invention relates to the field of inorganic pigment preparation, in particular to a dysprosium and praseodymium co-doped bismuth vanadate inorganic pigment and a preparation method thereof. Background technique [0002] Since the 1980s, bismuth vanadate has been widely used in the two fields of photocatalytic degradation and inorganic pigments due to its non-toxic, bright color, good corrosion resistance, and photocatalytic properties. As an environmentally friendly inorganic material, it has gradually replaced environmentally harmful pigments in the field of pigments and has become a new type of pigment that is widely used. In recent decades, scholars have conducted a lot of research on the application of bismuth vanadate in inorganic pigments. For example, different methods are used to prepare bismuth vanadate pigments. The main methods are: solid phase method, impregnation method, water Thermal method, photoreduction method, modified metal-orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/00C09C3/08
Inventor 李军奇张炼刘辉何选盟朱振峰崔明明刘振兴
Owner SHAANXI UNIV OF SCI & TECH
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