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Preparation method and application of bismuth oxyiodate/bismuth oxybromide composite photocatalyst

A technology of bismuth oxyiodate and bismuth oxybromide, which is applied in catalyst activation/preparation, physical/chemical process catalyst, bismuth compound, etc., can solve the problems of limited visible light response capability and large forbidden band width, etc., and achieves a simple and feasible experimental method. , good matching and good controllability

Inactive Publication Date: 2021-01-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But since BiOIO 3 The bandgap width is large and the response ability to visible light is limited, so its visible light photocatalytic activity should be improved

Method used

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  • Preparation method and application of bismuth oxyiodate/bismuth oxybromide composite photocatalyst
  • Preparation method and application of bismuth oxyiodate/bismuth oxybromide composite photocatalyst
  • Preparation method and application of bismuth oxyiodate/bismuth oxybromide composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1. Dissolve 0.485g of bismuth nitrate in 80ml of distilled water. After completely dissolving, add 0.214g of potassium iodate and stir for 10 minutes. Cool naturally, wash with distilled water and absolute ethanol alternately, and dry to obtain bismuth oxyiodate.

[0034] Step 2. Dissolve 1g of bismuth nitrate and 1g of hexadecyltrimethylammonium bromide in 50ml of distilled water, stir for 1h, transfer the resulting suspension to a 100ml reactor, react at 160°C for 18h, and cool naturally at room temperature , washed with distilled water and absolute ethanol alternately, and dried to obtain bismuth oxybromide.

[0035] Step 3. Add 0.1g of bismuth oxyiodate and 0.1g of bismuth oxybromide to 20ml of ethanol respectively, and sonicate for 1 hour. After the ultrasonication is completed, pour the bismuth oxyiodate solution into the bismuth oxybromide solution, and continue to sonicate the mixture for 2 hours. Add 20ml of acetone dropwise to the mixture with a rubber d...

Embodiment 2

[0037] Step 1. Dissolve 0.485g of bismuth nitrate in 80ml of distilled water. After completely dissolving, add 0.214g of potassium iodate and stir for 10 minutes. Cool naturally, wash with distilled water and absolute ethanol alternately, and dry to obtain bismuth oxyiodate.

[0038] Step 2. Dissolve 1g of bismuth nitrate and 1g of hexadecyltrimethylammonium bromide in 50ml of distilled water, stir for 2h, transfer the resulting suspension to a 100ml reactor, react at 140°C for 24h, and cool naturally at room temperature , washed with distilled water and absolute ethanol alternately, and dried to obtain bismuth oxybromide.

[0039] Step 3. Add 0.1g of bismuth oxyiodate and 0.12g of bismuth oxybromide to 20ml of ethanol respectively, and sonicate for 1 hour. After the ultrasonication is completed, pour the bismuth oxyiodate solution into the bismuth oxybromide solution, and continue to sonicate the mixture for 2 hours. Add 20ml of acetone dropwise into the mixture with a rubbe...

Embodiment 3

[0041] Step 1. Dissolve 0.485g of bismuth nitrate in 80ml of distilled water. After completely dissolving, add 0.214g of potassium iodate and stir for 10 minutes. Cool naturally, wash with distilled water and absolute ethanol alternately, and dry to obtain bismuth oxyiodate.

[0042] Step 2. Dissolve 1g of bismuth nitrate and 1g of hexadecyltrimethylammonium bromide in 50ml of distilled water, stir for 2h, transfer the resulting suspension to a 100ml reactor, react at 140°C for 24h, and cool naturally at room temperature , washed with distilled water and absolute ethanol alternately, and dried to obtain bismuth oxybromide.

[0043] Step 3. Add 0.1g of bismuth oxyiodate and 0.14g of bismuth oxybromide to 20ml of ethanol respectively, and sonicate for 1 hour. After the ultrasonication is completed, pour the bismuth oxyiodate solution into the bismuth oxybromide solution, and continue to sonicate the mixture for 2 hours. Add 20ml of acetone dropwise to the mixture with a rubber ...

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Abstract

The invention discloses a preparation method and application of a bismuth oxyiodate / bismuth oxybromide composite photocatalyst, and belongs to the field of photocatalytic semiconductor materials. Themethod comprises the following steps: dissolving bismuth nitrate in distilled water, dissolving potassium iodate in the solution, transferring the obtained suspension into a reaction kettle, reactingat 130-150 DEG C for 5-8 hours, naturally cooling to room temperature, and washing, drying and baking the obtained product to obtain bismuth oxyiodate; then, dissolving bismuth nitrate and hexadecyl trimethyl ammonium bromide in distilled water, transferring the obtained suspension into the reaction kettle, reacting for 18-24 hours at 140-160 DEG C, naturally cooling at room temperature, washing the product with distilled water and absolute ethyl alcohol alternately, and performing drying to obtain bismuth oxybromide; finally, respectively adding bismuth oxyiodate and bismuth oxybromide into ethanol, carrying out ultrasonic treatment, dropwise adding the bismuth oxyiodate solution into the bismuth oxybromide solution, continuing ultrasonic treatment, dropwise adding acetone into the mixedsolution, and carrying out magnetic stirring, precipitation and drying to obtain the composite photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic semiconductor materials, and relates to a BiOIO 3 Preparation method of composite photocatalyst. Background technique [0002] Photocatalytic technology is a new type of environment-friendly technology. Photocatalytic technology can produce high efficiency at room temperature, and can use sunlight. It is a pollutant energy-saving treatment technology with broad application prospects. If you want to effectively play the role of photocatalytic technology, you must focus on photocatalysts, which are the key to photocatalytic technology. [0003] Bismuth oxyiodate (BiOIO 3 ) as a new bismuth-based photocatalyst and the commonly used catalyst TiO 2 (P25) showed excellent photocatalytic performance. BiOIO 3 The excellent photocatalytic activity is due to its layered structure and internal polarity, both of which are conducive to the separation of photogenerated electron-hole pairs, and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J37/02B01J37/34C02F1/30C01G29/00C02F101/30C02F101/36C02F101/38
CPCB01J27/06B01J37/0201B01J37/343C02F1/30C01G29/00C02F2101/36C02F2101/38C02F2305/10C02F2101/308C02F2101/30B01J35/39
Inventor 徐成栋万玉山
Owner CHANGZHOU UNIV
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