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Preparation method of phosphorus doped bismuth phosphate photocatalyst

A photocatalyst and bismuth phosphate technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of insufficient research and rare phosphorus-doped bismuth phosphate, and achieve novel methods, High photocatalytic activity

Inactive Publication Date: 2014-09-03
YANGZHOU TIANCHEN FINE CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, non-metal elements doped BiPO 4 The research on the preparation method is not very sufficient, and most of them focus on nitrogen-doped BiPO 4 Phosphorus-doped bismuth phosphate is relatively rare

Method used

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  • Preparation method of phosphorus doped bismuth phosphate photocatalyst
  • Preparation method of phosphorus doped bismuth phosphate photocatalyst
  • Preparation method of phosphorus doped bismuth phosphate photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 1. Preparation of precursor: Weigh 6 g of red phosphorus and add it to 80 mL of deionized water, and stir the suspension for 12 hours under the condition of sufficient stirring.

[0028] The mixed phase obtained above was put into a 100 mL polytetrafluoroethylene autoclave, the hydrothermal reaction time was 12 hours, and the hydrothermal reaction temperature was 180 ° C. The obtained dark red solid was washed several times with deionized water, and placed in After vacuum drying at 80 °C for 12 h, the red phosphorus precursor with surface oxide removed was obtained.

[0029] 2. Preparation of phosphorus-doped bismuth phosphate photocatalyst: Weigh 0.725g bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O) Dissolve in 15 mL of nitric acid aqueous solution with a concentration of 4 mol / L, stir and dissolve thoroughly to obtain solution A.

[0030] Weighed 0.6 g of the red phosphorus precursor obtained in step 1, and added it to solution A under magnetic stirring. After ultrasonic tr...

Embodiment 2

[0037] 1. Preparation of the precursor: Weigh 8 g of red phosphorus and add it to 80 mL of deionized water, and stir the suspension for 12 hours under the condition of sufficient stirring.

[0038] Put the mixed phase obtained above into a 100 mL polytetrafluoroethylene autoclave, the hydrothermal reaction time is 12 hours, and the hydrothermal reaction temperature is 180 ° C. The obtained dark red substance is washed several times with deionized water, and vacuum-dried After 12 h at a temperature of 80 °C, the red phosphorus precursor with surface oxide removed was obtained.

[0039] 2. Preparation of phosphorus-doped bismuth phosphate photocatalyst: Weigh 2.9 g bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O) Dissolve in 80 mL of nitric acid aqueous solution (concentration: 3 mol / L), fully stir and dissolve to obtain solution A.

[0040] Weigh 2 g of the red phosphorus precursor obtained in step 1 and add it to solution A under magnetic stirring. After ultrasonic treatment for 30 mi...

Embodiment 3

[0043] 1. Preparation of the precursor: Weigh 4 g of red phosphorus and add it to 80 mL of deionized water, and stir the suspension for 12 hours with sufficient stirring.

[0044] Put the mixed phase obtained above into a 100 mL polytetrafluoroethylene autoclave, the hydrothermal reaction time is 12 hours, and the hydrothermal reaction temperature is 180 ° C. The obtained dark red substance is washed several times with deionized water, and vacuum-dried After 12 h at a temperature of 80 °C, the red phosphorus precursor with surface oxide removed was obtained.

[0045] 2. Preparation of phosphorus-doped bismuth phosphate photocatalyst: Weigh 0.725g bismuth nitrate (Bi(NO 3 ) 3 ·5H 2 O) Dissolve in 15 mL of nitric acid aqueous solution with a concentration of 4 mol / L, stir and dissolve thoroughly to obtain solution A.

[0046] Weigh 0.5 g of the red phosphorus precursor obtained in step 1, add it into solution A under magnetic stirring, and after ultrasonic treatment for 20 mi...

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Abstract

The invention discloses a preparation method of a phosphorus doped bismuth phosphate photocatalyst, and belongs to the technical field of preparing of nanometer materials; the preparation method is as follows: first mixing red phosphorus and deionized water in an autoclave for hydrothermal reaction, after the reaction, washing an obtained solid product with the deionized water, drying to obtain a red phosphorus precursor with surface oxides being removed; then under magnetic stirring, putting the red phosphorus precursor in an aqueous nitric acid solution in which bismuth nitrate is dissolved for ultrasonic treatment, placing the mixing system in the autoclave at 180 DEG C for hydrothermal reaction, and after the reaction, cooling to room temperature; then washing a precipitate product with the deionized water and ethanol, and finally, drying to obtain the phosphorus doped bismuth phosphate photocatalyst. According to the method, the phosphorus doped bismuth phosphate photocatalyst can be successfully prepared by one step low temperature hydrothermal method, the method is novel and simple, the phosphorus doped bismuth phosphate photocatalyst is high in photocatalytic activity, a simulated dye can be degraded under the condition of light irradiation, and 2.5 hours after the degradation rate is as high as 95%.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and in particular relates to a preparation method of phosphorus-doped bismuth phosphate photocatalyst. Background technique [0002] Bismuth phosphate (BiPO 4 ) have particular applications in the fields of catalysis, ion sensing, separation of radioactive elements, and improvement of the electrical properties of phosphate glasses. In recent years, it has been reported that BiPO 4 Has fluorescent properties. BiPO 4 There are three main crystal forms in the system: monoclinic phase, monoclinic phase monazite structure and hexagonal structure. Bi 3+ The ion forms an eight-coordinated structure with the O atom, and the P 5+ Ions and O atoms form four coordinations, Bi and P atoms form oxygen polyhedrons to form a chain structure, Bi and P atoms form oxygen polyhedrons, and the ratio is 1:1. Hexagonal BiPO 4 It is widely used in optics and other fields, and there ha...

Claims

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Application Information

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IPC IPC(8): B01J27/186
Inventor 谢吉民魏巍崔恒律陈国云刘润兴宗瑟凯
Owner YANGZHOU TIANCHEN FINE CHEM
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