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Preparation method for BiOBr nanorod, and applications

A technology of nanorods and reactions, applied in chemical instruments and methods, catalyst activation/preparation, inorganic chemistry, etc., can solve problems such as unfavorable sewage treatment, increased production costs, environmental threats, etc., and achieve good effects, good crystallinity, The effect of shortening the reaction time

Active Publication Date: 2018-12-07
王子韩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art listed above, although there are many preparation methods for bismuth oxyhalide, it is inevitable to use organic solvents more or less. The existence of these organic solvents will not only increase the preparation cost, but also For the subsequent sewage treatment and its disadvantages, there is a certain potential threat to the environment

Method used

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  • Preparation method for BiOBr nanorod, and applications
  • Preparation method for BiOBr nanorod, and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh bismuth nitrate pentahydrate and sodium bromide at a molar ratio of 1:1.1, grind the mixture of the two in an agate mortar for 5 minutes, then transfer the ground mixture to a planetary ball mill for high-speed grinding reaction, wherein the ball milling speed is 3000rpm, and the ball milling time is 3min; after the ball milling is finished, the intermediate product is taken out from the ball mill tank; it is dispersed in deionized water, and the amount of 2.5mg intermediate product added per milliliter of deionized water is added; after the addition is completed, put Put it into a hydrothermal reaction kettle and react at 100°C for 8 hours. After the reaction, cool down to room temperature naturally, centrifuge, wash with water and alcohol in sequence, and dry at 60°C.

Embodiment 2

[0024] Weigh bismuth nitrate pentahydrate and sodium bromide at a molar ratio of 1:1.3, grind the mixture of the two in an agate mortar for 5 minutes, then transfer the ground mixture to a planetary ball mill for high-speed grinding reaction, wherein the ball milling speed is 3000rpm, and the ball milling time is 3min; after the ball milling is finished, the intermediate product is taken out from the ball mill tank; it is dispersed in deionized water, and the amount of 2.5mg intermediate product added per milliliter of deionized water is added; after the addition is completed, put Put it into a hydrothermal reaction kettle and react at 110°C for 7 hours. After the reaction, cool down to room temperature naturally, centrifuge, wash with water and alcohol in sequence, and dry at 60°C.

Embodiment 3

[0026] Weigh bismuth nitrate pentahydrate and sodium bromide at a molar ratio of 1:1.5, grind the mixture of the two in an agate mortar for 5 minutes, then transfer the ground mixture to a planetary ball mill for high-speed grinding reaction, wherein the ball milling speed is 4000rpm, and the ball milling time is 2.5min; after the ball milling is finished, the intermediate product is taken out from the ball mill tank; it is dispersed in deionized water, and the amount of 2.5mg of the intermediate product is added per milliliter of deionized water; after the addition is completed, Put it into a hydrothermal reaction kettle and react at 120°C for 7 hours. After the reaction, cool down to room temperature naturally, centrifuge, wash with water and alcohol in sequence, and dry at 60°C.

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Abstract

The invention discloses a preparation method for a BiOBr nanorod. The preparation method includes the following steps: 1) weighing proper amount of barium nitrate pentahydrate and sodium bromide, grinding a mixture of the barium nitrate pentahydrate and sodium bromide in a mortar for some time, transferring the grinded mixture to a planetary ball mill to perform high speed grinding reaction, and taking an intermediate product out of a ball-milling jar after the reaction is performed for 2-3 min; 2) dispersing the intermediate product in deionized water to put into a hydrothermal reaction kettle to perform hydrothermal reaction; and 3) obtaining a final product through separating and washing after the reaction is finished.

Description

technical field [0001] The invention relates to a sewage treatment agent with broad-spectrum light absorption capacity, in particular to a preparation method and application of BiOBr nanorods. Background technique [0002] At present, energy shortages and serious environmental pollution problems increasingly plague the healthy development of society, especially water pollution, which has brought huge ecological disasters. Semiconductor catalytic technology is an efficient green oxidation technology, which has extensive research and application value in water pollution control. [0003] In 1972, A.Fujishima et al discovered TiO 2 It can decompose water under the action of ultraviolet light. Since then, many scientific researchers have conducted extensive research on it, but using TiO 2 As a photocatalyst material, there are certain defects, such as TiO 2 It is a wide bandgap material, its light absorption wavelength is narrow, mainly concentrated in the ultraviolet region,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/08B01J35/02B01J37/00B01J37/10C01G29/00C02F1/30B01J35/00
CPCC01G29/00C02F1/30B01J27/08B01J37/0036B01J37/10C01P2004/64C01P2004/16C02F2305/10B01J35/40B01J35/39
Inventor 王子韩杨宗英张亮
Owner 王子韩
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