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Preparation method of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material and application of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material in treatment of toxic organic wastewater

A technology of organic wastewater treatment and photocatalytic materials, applied in special compound water treatment, light water/sewage treatment, chemical instruments and methods, etc., can solve the problem of low separation efficiency of photogenerated carriers

Inactive Publication Date: 2018-09-04
CHANGZHOU UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the separation efficiency of photogenerated carriers in BiOI is still low, and its photocatalytic activity still needs to be further improved.

Method used

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  • Preparation method of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material and application of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material in treatment of toxic organic wastewater
  • Preparation method of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material and application of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material in treatment of toxic organic wastewater
  • Preparation method of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material and application of high performance iodine vacancy bismuth oxygen-iodine photocatalytic material in treatment of toxic organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 5.5g Bi(NO 3 ) 3 ·5H 2 O and 1.9g KI were magnetically stirred with 25mL ethylene glycol for 0.5h, until completely dissolved. Then, the bismuth nitrate solution was dropped into the potassium iodide solution, and the reaction was performed with magnetic stirring for 1 h, transferred to a high-pressure reactor, and reacted at 160° C. for 12 h, and cooled naturally to room temperature. The product was washed 2-3 times with deionized water, filtered, dried at 80°C, and ground to obtain coral red BiOI.

Embodiment 2

[0026] Weigh 1g of BiOI prepared in Example 1, put it into an alumina crucible, place it in a muffle furnace, heat it to 200°C at a heating rate of 5°C / min, keep this temperature for calcination for 5h, and naturally cool to room temperature , to obtain iodine vacancy bismuth oxygen iodine BiO 1.05 I 0.90 .

Embodiment 3

[0028] Weigh 1g of BiOI prepared in Example 1, put it into an alumina crucible, place it in a muffle furnace, heat it to 300°C at a heating rate of 5°C / min, keep this temperature for calcination for 5h, and naturally cool to room temperature , to obtain iodine vacancy bismuth oxygen iodine BiO 1.11 I 0.78 .

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Abstract

The invention discloses a preparation method of a high performance iodine vacancy bismuth oxygen-iodine (BiO1.18I0.64) photocatalytic material. The preparation method is characterized in that bismuthnitrate and potassium iodide are used as raw materials, ethylene glycol is used as a solvent, and a novel photocatalytic material iodine vacancy bismuth oxygen-iodine (BiO1.18I0.64) is obtained by combining a solvothermal method with a calcination method. The preparation process is simple and operation conditions are loose; and the synthesized iodine vacancy bismuth oxygen-iodine (BiO1.18I0.64) has excellent photocatalytic performance and higher degradation activity for toxic organic matters in water.

Description

1. Technical field [0001] The invention belongs to the technical field of photocatalytic wastewater treatment, and relates to a method for preparing iodine vacancy bismuth oxyiodine (BiO 1.18 I 0.64 ) photocatalytic material method and photocatalytic purification of toxic organic wastewater. 2. Technical background [0002] With the rapid development of my country's petrochemical and fine chemical industries, a large amount of waste water containing toxic organic matter has been discharged into water bodies without effective treatment, resulting in increasingly serious organic matter pollution in water bodies in my country, causing great harm to human health and aquatic organisms. The application of photocatalytic technology to treat harmful chemicals in wastewater has attracted extensive attention from researchers because of its mild reaction conditions, deep decomposition of organic matter, and low secondary pollution. However, the key problem faced by using this technol...

Claims

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Application Information

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IPC IPC(8): B01J27/08C01G29/00C02F1/30C02F101/30
CPCC01G29/00C02F1/30B01J27/08C01P2002/72C01P2002/70C01P2004/03C01P2002/84C02F2101/30C02F2301/066C02F2305/10B01J35/39
Inventor 王少莽关媛马兴东陈璐吴鑫泉易广
Owner CHANGZHOU UNIV
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