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a v 2 o 5 Preparation method of /bioi semiconductor composite photocatalyst

A composite light and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., to achieve low cost, easy manipulation, and improved photocatalytic activity

Active Publication Date: 2021-10-08
江苏矽腾半导体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no V 2 o 5 Research report on the application of / BiOI compound semiconductor in the degradation of organic pollutants

Method used

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  • a v <sub>2</sub> o <sub>5</sub> Preparation method of /bioi semiconductor composite photocatalyst
  • a v <sub>2</sub> o <sub>5</sub> Preparation method of /bioi semiconductor composite photocatalyst
  • a v <sub>2</sub> o <sub>5</sub> Preparation method of /bioi semiconductor composite photocatalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 5mmol NH 4 VO 3 Dissolve in deionized water, stir and ultrasonically disperse for 30 minutes to a bright yellow, clear and transparent solution, measure the pH of the solution with a pH meter, add HNO dropwise 3 Adjust pH 2.1-2.5. Transfer the solution to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, react at 180°C for 24h, centrifuge the precipitate, wash it with deionized water and absolute ethanol three times, dry it at 80°C, and transfer it to a horse. Calcined in Furnace at 500°C for 2h, cooled to room temperature and ground to get orange V 2 o 5 sample.

[0023] 1mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 20 mL of ethylene glycol, and ultrasonicated for 30 min until the solution was clear and transparent.

[0024] Weigh V with a mass ratio of 1% 2 o 5 Add to the above clear solution, ultrasonic 30min to disperse.

[0025] Weigh 1 mmol of KI solid and dissolve it in 20 mL of deionized water, then add the KI solution dropwise to the above so...

Embodiment 2

[0027] 5mmol NH 4 VO 3 Dissolve in deionized water, stir and ultrasonically disperse for 30 minutes to a bright yellow, clear and transparent solution, measure the pH of the solution with a pH meter, add HNO dropwise 3 Adjust pH 2.1-2.5. Transfer the solution to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, react at 180°C for 24h, centrifuge the precipitate, wash it with deionized water and absolute ethanol three times, dry it at 80°C, and transfer it to a horse. Calcined in Furnace at 500°C for 2h, cooled to room temperature and ground to get orange V 2 o 5 sample.

[0028] 1mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 20 mL of ethylene glycol, and ultrasonicated for 30 min until the solution was clear and transparent.

[0029] Weigh the V with a mass ratio of 3% 2 o 5 Add to the above clear solution, ultrasonic 30min to disperse.

[0030] Weigh 1 mmol of KI solid and dissolve it in 20 mL of deionized water, then add the KI solution dropwise to the abov...

Embodiment 3

[0032] 5mmol NH 4 VO 3 Dissolve in deionized water, stir and ultrasonically disperse for 30 minutes to a bright yellow, clear and transparent solution, measure the pH of the solution with a pH meter, add HNO dropwise 3 Adjust pH 2.1-2.5. Transfer the solution to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, react at 180°C for 24h, centrifuge the precipitate, wash it with deionized water and absolute ethanol three times, dry it at 80°C, and transfer it to a horse. Calcined in Furnace at 500°C for 2h, cooled to room temperature and ground to get orange V 2 o 5 sample.

[0033] 1mmol Bi(NO 3 ) 3 ·5H 2O was dissolved in 20 mL of ethylene glycol, and ultrasonicated for 30 min until the solution was clear and transparent.

[0034] Weigh V with a mass ratio of 5% 2 o 5 Add to the above clear solution, ultrasonic 30min to disperse.

[0035] Weigh 1 mmol of KI solid and dissolve it in 20 mL of deionized water, then add the KI solution dropwise to the above sol...

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Abstract

The invention belongs to the technical field of preparation of composite photocatalysts, in particular to a V 2 o 5 / BiOI composite semiconductor photocatalyst preparation method. V 2 o 5 / BiOI composite semiconductor photocatalyst by V 2 o 5 Composite with BiOI, in which V was first prepared by hydrothermal and calcination 2 o 5 , and then dispersed in the ethylene glycol solution of bismuth nitrate and potassium iodide solution to obtain V 2 o 5 / BiOI composite semiconductor photocatalyst. The preparation method of the invention has simple process, easy manipulation and low cost. The photocatalytic degradation experiment shows that the photocatalyst prepared by the present invention shows better photocatalytic degradation effect on rhodamine B, when V 2 o 5 Occupation of composite photocatalyst V 2 o 5 When the mass ratio of / BiOI is 5%, the degradation effect is the best, and the degradation of Rhodamine B reaches 80.6% in 120min.

Description

technical field [0001] The invention belongs to the technical field of preparation of composite photocatalysts, in particular to a method for preparing V 2 o 5 / BiOI semiconductor composite photocatalyst method. Background technique [0002] Global energy shortages, increasing environmental pollution and climate issues are already the most challenging issues facing mankind in this century. As human society relies more and more on non-renewable fossil energy, people begin to urgently seek safe and clean new renewable energy. Solar energy is the most abundant and inexhaustible clean energy source. Using efficient catalysts can convert solar energy into chemical energy, which has great potential application prospects in catalytic water splitting and catalytic pollutant degradation. Semiconductor photocatalysis technology has great potential in solving energy and environment. Since Fujishima and Honda reported the use of n-type semiconductor TiO in 1972 2 Since the splittin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06C02F1/30C02F101/30
Inventor 张蓉仙唐燕柯志江程世青柯文韬李想张岐
Owner 江苏矽腾半导体材料有限公司
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