Preparation method of iron sesquioxide-bismuthylcarbonate composite light catalyst

A technology of ferric oxide and bismuth oxycarbonate, which is used in physical/chemical process catalysts, chemical instruments and methods, water treatment of special compounds, etc., can solve the problems of high price of composite components, complex synthesis steps, and unfavorable wide application. , to achieve the effect of remarkable photocatalytic effect, low operating cost and easy operation.

Inactive Publication Date: 2017-01-04
YANGZHOU TIANCHEN FINE CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the existing patented technologies, bismuth oxycarbonate composite photocatalyst still has some shortcomings: the price of composite components is high, and the synthesis steps are complicated, which is not conducive to the wide application in production practice

Method used

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  • Preparation method of iron sesquioxide-bismuthylcarbonate composite light catalyst
  • Preparation method of iron sesquioxide-bismuthylcarbonate composite light catalyst
  • Preparation method of iron sesquioxide-bismuthylcarbonate composite light catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Weigh 0.433g FeCl 3 ·6H 2 O was dissolved in 2.4 g absolute ethanol and stirred until FeCl 3 ·6H 2 O was completely dissolved, and 0.537 g of deionized water was added to the solution, followed by 0.649 g of propylene oxide, and allowed to stand for 12 h to form a brown-red iron-based gel.

[0030] The gel was placed in a 25 mL polytetrafluoroethylene autoclave, and 0.8 g Bi(NO 3 ) 2 .5H 2 O and 10mL dilute nitric acid (4 mol·L -1 ) was used as the reaction solvent, and the hydrothermal reaction was carried out for 12 h at the temperature of the mixed system at 180 °C.

[0031] After the reaction, it was naturally cooled to room temperature, and the reacted sample was taken out and washed three times with ethanol at 50°C. The washed samples were placed in a blast drying oven at a controlled temperature of 60°C and dried for 6 hours to obtain ferric oxide-bismuth oxycarbonate.

Embodiment 2

[0033] Weigh 0.866g FeCl 3 ·6H 2 O was dissolved in 6.4 g of absolute ethanol and stirred until FeCl 3 ·6H 2 O was completely dissolved, and 2.0 g of deionized water was added to the solution, followed by 1.3 g of propylene oxide, and allowed to stand for 20 h to form a brown-red iron-based gel.

[0034] The gel was placed in a 50 mL polytetrafluoroethylene autoclave, and 1.6 g of Bi(NO 3 ) 2 .5H 2 O and 20mL dilute nitric acid (4 mol·L -1 ) was used as the reaction solvent, and the hydrothermal reaction was carried out for 24 hours under the condition that the temperature of the mixed system was 180°C.

[0035] After the reaction, it was naturally cooled to room temperature, and the reacted sample was taken out and washed three times with ethanol at 50°C. The washed sample was placed in a forced air drying oven at a controlled temperature of 80°C and dried for 8 hours to obtain ferric oxide-bismuth oxycarbonate.

Embodiment 3

[0037] Weigh 0.433g FeCl 3 ·6H 2 O was dissolved in 4.0 g absolute ethanol and stirred until FeCl 3 ·6H 2 O was completely dissolved, and 0.423g of deionized water was added to the solution, and then 0.65g of propylene oxide was added and allowed to stand for 14h to form a brown-red iron-based gel. The gel was placed in a 25 mL polytetrafluoroethylene autoclave, and 1.2 g of Bi(NO 3 ) 2 .5H 2 O and 14mL dilute nitric acid (4 mol·L -1 ) was used as the reaction solvent, and the hydrothermal reaction was carried out for 24 hours under the condition that the temperature of the mixed system was 180°C.

[0038] After the reaction, it was naturally cooled to room temperature, and the reacted sample was taken out and washed three times with ethanol at 50°C. The washed samples were placed in a blast drying oven at a controlled temperature of 80°C and dried for 10 hours to obtain ferric oxide-bismuth oxycarbonate.

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Abstract

The invention discloses a preparation method of an iron sesquioxide-bismuthylcarbonate composite light catalyst, and belongs to the technical field of novel material preparation. A low-temperature hydrothermal method is adopted, iron-based gel is adopted as a precursor, Fe2O3 is introduced on the surface of bismuthylcarbonate in one step, and the composite light catalyst is formed. The problem that the composite light catalyst is hard to synthesize is solved, and the iron sesquioxide-bismuthylcarbonate composite light catalyst is successfully prepared. On the basis of the simple sol-gel soaking method, no surface active agent or template agent is added, high temperature calcination is not needed, the technology is simple, the preparation process is easy to control, water is adopted as the reaction solvent, and obtained nanoparticles are uniform in distribution.

Description

technical field [0001] The invention belongs to the technical field of new material preparation. Background technique [0002] In order to deal with the increasingly serious water pollution problem, the development of new and efficient sewage treatment materials and photocatalytic technology has become the goal of scientific researchers. In recent years, bismuth-based compound semiconductors have gradually developed into a research hotspot in the field of photocatalysis due to their unique layered structure and good visible light absorption ability. [0003] Bi 2 o 2 CO 3 As a typical representative of bismuth-based compound semiconductors, it has many advantages of bismuth-based semiconductors, such as wider visible light response, enhanced oxidation activity of photocatalysts, and mobility of photogenerated holes in the valence band, but it is relatively large The band gap hinders further widespread application. And by compounding semiconductor particles with differen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232C02F1/30
CPCC02F1/30B01J27/232C02F2305/10B01J35/39
Inventor 魏巍谢吉民陈国云刘润兴余耀吕晓萌嵇建华
Owner YANGZHOU TIANCHEN FINE CHEM
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