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A kind of yttrium lead titanate/bismuth oxychloride and its preparation method

A technology of bismuth oxychloride and yttrium titanate, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of high cost and difficult industrial production, and achieve low production cost and high decolorization rate Improvement, the effect of simple process method

Inactive Publication Date: 2020-06-16
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The complexity of the existing technology leads to high cost and it is difficult to realize industrial production

Method used

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  • A kind of yttrium lead titanate/bismuth oxychloride and its preparation method
  • A kind of yttrium lead titanate/bismuth oxychloride and its preparation method
  • A kind of yttrium lead titanate/bismuth oxychloride and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1. Add 9.99mmol of lead acetate to the deacetic acid to form liquid A;

[0020] Step 2. Add 10mmol of Ti(OC 4 H 9 ) 4 Add to ethanol and acetic acid and mixed solution to form liquid B;

[0021] Step 3. Add 0.01mmol yttrium acetate solution to the mixed solution of A solution and B solution to obtain solution C, in which Ti(OC 4 H 9 ) 4 The molar ratio with (lead acetate + yttrium acetate) is 1:1, Ti(OC 4 H 9 ) 4 The molar ratio to yttrium acetate is 1:0.01;

[0022] Step 4. The obtained liquid C is dried, ground, and calcined at 600° C. for 3 hours to obtain yttrium lead titanate.

Embodiment 2

[0024] Step 1. Add 9.99mmol of lead acetate to the deacetic acid to form liquid A;

[0025] Step 2. Add 10mmol of Ti(OC 4 H 9 ) 4 Add to ethanol and acetic acid and mixed solution to form liquid B;

[0026] Step 3. Add 0.01mmol of yttrium acetate solution to the mixed solution of A and B to obtain C, in which Ti(OC 4 H 9 ) 4 The molar ratio with (lead acetate + yttrium acetate) is 1:1, Ti(OC 4 H 9 ) 4 The molar ratio to yttrium acetate is 1:0.01;

[0027] Step 4. The obtained liquid C is dried, ground, and calcined at 600°C for 3 hours to obtain yttrium lead titanate;

[0028] Step 5. Mix the bismuth oxide powder with the yttrium lead titanate obtained in step 4, add deionized water and ultrasonically disperse, and then add the hydrochloric acid solution to the above system, where the molar ratio of yttrium lead titanate to bismuth oxide is 1:0.25, the molar ratio of bismuth oxide to hydrochloric acid is 1:7, the obtained precipitate is repeatedly washed 3 times with ethanol and deion...

Embodiment 3

[0030] Add a certain amount of bismuth oxide powder to deionized water and ultrasonically disperse it, then add the hydrochloric acid solution to the above system, where the molar ratio of bismuth oxide to hydrochloric acid is 1:7, and ethanol and deionized water are used for precipitation After repeated washing 3 times, bismuth oxychloride is obtained after drying.

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Abstract

The invention relates to lead yttrium titanate / bismuth oxychloride and a preparation method. The steps of the preparation method of the present invention are as follows: first add lead acetate to deacetic acid, add Ti(OC 4 H 9 ) 4 Add to the mixed solution of ethanol and acetic acid, mix the two solutions, then add the yttrium acetate solution, dry, grind and calcine at high temperature to obtain yttrium lead titanate, mix and disperse the obtained yttrium lead titanate powder and bismuth oxide powder. Add hydrochloric acid solution, stir, wash and dry to obtain a lead yttrium titanate / bismuth oxychloride powder. The invention has the advantages of simple operation, low preparation cost, mild conditions and easy industrialization.

Description

Technical field [0001] The invention belongs to the field of functional materials and relates to a lead yttrium titanate / bismuth oxychloride and a preparation method. Background technique [0002] In recent years, with the rapid development of global industrialization, environmental pollution has become increasingly prominent. Photocatalyst technology has attracted more and more attention because of its advantage of directly using sunlight to solve water pollution. Photocatalyst is the core of this technology. Bismuth oxychloride can catalyze the decomposition of water to produce hydrogen and degrade organic pollutants under light conditions, but due to its large band gap (the band gap is 3.4 eV), it can only absorb ultraviolet photons. However, ultraviolet light only accounts for 3% to 5% of sunlight, while visible light accounts for about 43% of solar energy. Therefore, adjusting the photodegradation absorption band of bismuth oxychloride to the visible light band will have im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/135C02F1/30C02F101/34C02F101/36C02F101/38
CPCC02F1/30B01J27/135C02F2305/10C02F2101/38C02F2101/36C02F2101/34C02F2101/308B01J35/39
Inventor 单连伟
Owner HARBIN UNIV OF SCI & TECH