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Preparation method of bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material

A photocatalytic material, bismuth oxycarbonate technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as insufficient response, achieve low cost, accelerate separation, and improve photocatalytic activity Effect

Pending Publication Date: 2022-03-22
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can effectively solve the problem of insufficient response of bismuth oxycarbonate as a photocatalytic material to ultraviolet light

Method used

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  • Preparation method of bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material
  • Preparation method of bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material
  • Preparation method of bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Add 0.5 g of urea to deionized water, stir to dissolve and add 2.75 mmol of Bi(NO 3 ) 3 ·5H 2 O, mechanical stirring. After the stirring was completed, 3 mmol of sodium sulfide was added to obtain a mixed solution. The mixed solution was mechanically stirred on a magnetic stirrer for 30 min. Transfer the mixed solution to a polytetrafluoroethylene liner, put the liner in a reaction kettle at 200°C and keep it warm for 24 hours for reaction; after the reaction is completed, cool it down to room temperature naturally, centrifuge the product, wash it with water, and wash it with alcohol , and dried at room temperature to obtain a bismuth oxycarbonate-bismuth sulfide heterostructure photocatalytic material.

[0029] The XRD patterns of bismuth oxycarbonate-bismuth sulfide heterostructure photocatalytic materials are shown in figure 1 ,Depend on figure 1 It can be seen that this embodiment indeed prepares a bismuth oxycarbonate-bismuth sulfide heterojunction. The SEM ...

Embodiment 2

[0031] Add 0.5 g of urea to deionized water, stir to dissolve and add 2.75 mmol of Bi(NO 3 ) 3 ·5H 2 O, mechanical stirring. After the stirring was completed, 4 mmol of sodium sulfide was added to obtain a mixed solution. The mixed solution was mechanically stirred on a magnetic stirrer for 30 min. Transfer the mixed solution to a polytetrafluoroethylene liner, put the liner in a reaction kettle at 200°C and keep it warm for 24 hours for reaction; after the reaction is completed, cool it down to room temperature naturally, centrifuge the product, wash it with water, and wash it with alcohol , and dried at room temperature to obtain a bismuth oxycarbonate-bismuth sulfide heterostructure photocatalytic material.

Embodiment 3

[0033] Add 0.5 g of urea to deionized water, stir to dissolve and add 2.75 mmol of Bi(NO 3 ) 3 ·5H 2O, mechanical stirring. After the stirring was completed, 4 mmol of sodium sulfide was added to obtain a mixed solution. The mixed solution was mechanically stirred on a magnetic stirrer for 30 min. Transfer the mixed solution to a polytetrafluoroethylene lining, put the lining in a reaction kettle at 180°C and keep it warm for 24 hours for reaction; after the reaction is completed, cool it down to room temperature naturally, centrifuge the product, wash it with water, and wash it with alcohol , and dried at room temperature to obtain a bismuth oxycarbonate-bismuth sulfide heterostructure photocatalytic material.

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Abstract

The invention discloses a preparation method of a bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material, which comprises the following steps: (1) adding urea into deionized water, stirring and dissolving, then adding Bi (NO3) 3.5 H2O, continuously stirring, and then adding sodium sulfide to obtain a mixed solution; and (2) stirring the mixed solution, then carrying out a closed reaction, after the reaction is completed, naturally cooling to room temperature, and carrying out centrifugation, water washing, alcohol washing and drying at room temperature on a product to obtain the bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material. The preparation method can effectively solve the problem of insufficient response to ultraviolet light when bismuthyl carbonate is used as a photocatalytic material, and compared with other bismuthyl carbonate-bismuth sulfide heterojunctions, the preparation method is simple, the cost is low, and large-scale production is easy.

Description

technical field [0001] The invention relates to the technical field of photocatalyst synthesis, in particular to a method for preparing a bismuth oxycarbonate-bismuth sulfide heterostructure photocatalytic material. Background technique [0002] In the research of photocatalytic technology, semiconductor photocatalysts have been attracting much attention. The use of visible light, which accounts for the largest proportion in the solar spectrum, to effectively degrade organic matter is one of the promising technologies for solving energy problems. [0003] As a typical semiconductor photocatalyst, nano-titanium dioxide has been attracting people's attention. Titanium dioxide has high photocatalytic activity and stability, and is cheap and non-toxic. However, due to the relatively large band gap energy of titanium dioxide, it can only accept short-wave radiation. Ultraviolet light excitation cannot effectively use most of the visible light, and the electrons and holes generate...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01J27/04B01J35/00C02F1/30C02F101/30
CPCB01J27/232B01J27/04C02F1/30C02F2101/30C02F2305/10B01J35/39Y02W10/37
Inventor 王军李娜刘克学李现旭殷焕顺王金花朱鲁生
Owner SHANDONG AGRICULTURAL UNIVERSITY
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