Preparation method of Fe-doped Bi2O2CO3 photocatalyst and Fe-doped Bi2O2CO3 photocatalyst

A technology of photocatalyst and dopant, which is applied in the field of photocatalysis, can solve problems such as limitations, and achieve the effect of enhanced absorption and enhanced photocatalytic activity of visible light

Inactive Publication Date: 2018-06-29
HUBEI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, let Bi 2 o 2 CO 3 It is

Method used

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  • Preparation method of Fe-doped Bi2O2CO3 photocatalyst and Fe-doped Bi2O2CO3 photocatalyst
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  • Preparation method of Fe-doped Bi2O2CO3 photocatalyst and Fe-doped Bi2O2CO3 photocatalyst

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preparation example Construction

[0023] The invention provides an Fe-doped Bi 2 o 2 CO 3 The preparation method of photocatalyst, it comprises: will contain Fe 3+ The dopant is dissolved in Bi(NO 3 ) 3 and sodium citrate in an alkaline organic solvent solution, and carry out hydrothermal reaction under the condition of ammonia water.

[0024] Bi 2 o 2 CO 3 It is a typical bismuth-based composite oxide composed of Bi 2 o 2 2+ and CO 3 2– Composition, its curved spatial structure exhibits unique photocatalytic properties under UV-visible light irradiation. The inventors found that the Fe 3+ doping into Bi 2 o 2 CO 3 In the crystal lattice, it can effectively increase the Bi 2 o 2 CO 3 The absorption of visible light, thus effectively improving the Bi 2 o 2 CO 3 visible light photocatalytic activity.

[0025] Contains Fe 3+ The dopant acts as an iron source, providing Fe 3+ Enter Bi 2 o 2 CO 3 in the lattice. In some specific embodiments of the present invention, containing Fe 3+ Th...

Embodiment 1

[0040] A Fe-doped Bi 2 o 2 CO 3 The preparation method of photocatalyst comprises:

[0041] S1, the 0.97gBi (NO 3 ) 3 and 0.3 g of sodium citrate were dissolved in 10 ml of N,N-dimethylformamide to obtain a reaction solution.

[0042] S2, add 0.1gFe(NO 3 ) 3 , stirred evenly, and 5ml of ammonia water with a mass concentration of 28% was added to obtain a reaction mixture.

[0043] S3. Transfer the reaction mixture to a hydrothermal kettle, keep it warm at 170° C. for 12 hours, and separate the solid and liquid after cooling to obtain the primary product.

[0044] S4. Wash the initial product alternately with distilled water and ethanol, and dry it at 60° C. for 8 hours to obtain Bi 2 o 2 CO 3 catalyst of light.

[0045] A kind of Fe-doped Bi prepared according to the above-mentioned preparation method 2 o 2 CO 3 catalyst of light.

Embodiment 2

[0047] A Fe-doped Bi 2 o 2 CO 3 The preparation method of photocatalyst comprises:

[0048] S1, put 0.8gBi(NO 3 ) 3 and 0.15 g of sodium citrate were dissolved in 8 ml of N,N-dimethylformamide to obtain a reaction solution.

[0049] S2, add 0.02gFe(NO 3 ) 3 , stirred evenly, and 3ml of ammonia water with a mass concentration of 35% was added to obtain a reaction mixture.

[0050] S3. Transfer the reaction mixture to a hydrothermal kettle, keep it warm at 175°C for 11 hours, and separate the solid and liquid after cooling to obtain the primary product.

[0051] S4. Wash the initial product alternately with distilled water and ethanol, and dry it at 60° C. for 8 hours to obtain Bi 2 o 2 CO 3 catalyst of light.

[0052] A kind of Fe-doped Bi prepared according to the above-mentioned preparation method 2 o 2 CO 3 catalyst of light.

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Abstract

The invention discloses a preparation method of a Fe-doped Bi2O2CO3 photocatalyst and the Fe-doped Bi2O2CO3 photocatalyst, and belongs to the technical field of photocatalysis. The preparation methodcomprises the following steps: uniformly mixing a dopant containing Fe<3+> in alkaline solvent solution with dissolved Bi(NO3)3 and sodium citrate, and carrying out hydrothermal reaction under the condition of containing ammonia water. The photocatalyst is prepared according to the preparation method. The Fe-doped Bi2O2CO3 photocatalyst disclosed by the invention has the advantages that Fe can bedoped into lattices of Bi2O2CO3, and the absorption of Bi2O2CO3 for visible light can be improved, so that the photocatalytic activity of Bi2O2CO3 for the visible light is improved.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a Fe-doped Bi 2 o 2 CO 3 Preparation method of photocatalyst and Fe-doped Bi 2 o 2 CO 3 catalyst of light. Background technique [0002] With the rapid development of industry, environmental pollution is becoming more and more serious. Using solar energy to degrade pollutants through photocatalytic technology is an energy-saving and environmentally friendly pollution treatment technology, which is considered to be the most effective and promising method to solve environmental problems. Bi 2 o 2 CO 3 It is a new type of photocatalyst that can degrade organic pollutants under ultraviolet light, and has higher activity than commercial P25. However, Bi 2 o 2 CO 3 The forbidden band width is about 3.4eV, which cannot absorb visible light. In addition, ultraviolet light in sunlight accounts for only about 4.5%, while visible light accounts for about 45%. Therefore...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01J35/00B01J35/10
CPCB01J27/232B01J35/004B01J35/1004
Inventor 戴高鹏彭金龙李嘉慧汪万强罗天雄刘素芹
Owner HUBEI UNIV OF ARTS & SCI
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