Method for stripping Bi3O4Cl by using cell disintegrator and application of method in aspect of photocatalytic reduction of CO2

A pulverizer, photocatalytic technology, applied in catalyst activation/preparation, physical/chemical process catalyst, carbon monoxide, etc., can solve the problem of low photocatalytic efficiency, achieve high separation efficiency, fast migration rate, good photocatalytic reduction of CO2 performance effect

Pending Publication Date: 2020-09-11
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Researchers are studying Bi x o y x z Some problems were also found in the photocatalytic process, Bi x o y x z The carrier separation energy of Bi x o y x z It is necessary to carry out further modification to improve the photocatalytic activity

Method used

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  • Method for stripping Bi3O4Cl by using cell disintegrator and application of method in aspect of photocatalytic reduction of CO2
  • Method for stripping Bi3O4Cl by using cell disintegrator and application of method in aspect of photocatalytic reduction of CO2
  • Method for stripping Bi3O4Cl by using cell disintegrator and application of method in aspect of photocatalytic reduction of CO2

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Embodiment 1

[0021] The present invention uses a cell pulverizer to peel off Bi 3 o 4 The method embodiment 1 of Cl, its method step is:

[0022] ⑴. Weigh 1 g Bi(NO 3 ) 3 ·5H 2O was fully stirred and dissolved in 35 ml of deionized water, then 0.5 g of tetracycline hydrochloride was added, stirred for 30 min, the mixture was transferred to a 40 ml polytetrafluoroethylene-lined stainless steel kettle, and reacted at 160 °C for 16 h. The samples after the hydrothermal reaction were taken out and centrifuged at 10,000 r / min for 10 min each time using a centrifuge. The centrifuged precipitate was washed several times with distilled water and ethanol, and finally dried in an oven at 80 °C for 24 h to obtain a black Bi-O-Cl complex precursor. Weigh 0.2 g of the dried precursor and put it into a muffle furnace for sintering at 550 °C for 3 h at a heating rate of 5 °C / min. After cooling down to room temperature naturally, collect the sample to obtain the bulk Bi 3 o 4 Cl photocatalyst;

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Embodiment 2

[0024] The present invention uses a cell pulverizer to peel off Bi 3 o 4 The method embodiment 2 of Cl, its method step is:

[0025] ⑴. Weigh 0.8 g Bi(NO 3 ) 3 ·5H 2 O was fully stirred and dissolved in 33 ml of deionized water, then 0.35 g of tetracycline hydrochloride was added, stirred for 40 min, the mixture was transferred to a 40 ml polytetrafluoroethylene-lined stainless steel kettle, and reacted at 180 °C for 16 h. The samples after the hydrothermal reaction were taken out and centrifuged at 10,000 r / min for 8 min each time using a centrifuge, and the centrifuged precipitates were washed several times with distilled water and ethanol respectively, and finally dried in an oven at 60 °C for 18 h to obtain black Bi- O-Cl complex precursor. Weigh 0.2 g of the dried precursor and put it into a muffle furnace for sintering at 500 °C for 5 h at a heating rate of 2 °C / min, and collect the sample after naturally cooling down to room temperature to obtain the bulk Bi 3 o ...

Embodiment 3

[0027] The present invention uses a cell pulverizer to peel off Bi 3 o 4 The method embodiment 3 of Cl, its method step is:

[0028] ⑴. Weigh 0.5 g Bi(NO 3 ) 3 ·5H 2 O was fully stirred and dissolved in 33 ml of deionized water, then 0.28 g of tetracycline hydrochloride was added, stirred for 30 min, the mixture was transferred to a 40 ml polytetrafluoroethylene-lined stainless steel kettle, and reacted at 180 °C for 24 h. The samples after the hydrothermal reaction were taken out and centrifuged at 10,000 r / min for 8 min each time using a centrifuge, and the centrifuged precipitates were washed several times with distilled water and ethanol respectively, and finally dried in an oven at 60 °C for 18 h to obtain black Bi- O-Cl complex precursor. Weigh 0.2 g of the dried precursor into a muffle furnace and sinter at 450 °C for 5 h with a heating rate of 1 °C / min, and collect samples after naturally cooling down to room temperature to obtain the bulk Bi 3 o 4 Cl photocatal...

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Abstract

The invention provides a method for stripping Bi3O4Cl by using a cell disintegrator. The method comprises the following steps: taking water as a solvent, Bi (NO3) 3-5H2O as a Bi source and tetracycline hydrochloride as a Cl source, preparing a Bi-O-Cl complex by adopting a hydrothermal method, then preparing a block Bi3O4Cl photocatalyst (B-Bi3O4Cl) by adopting a sintering method, carrying out ultrasonic stripping on the B-Bi3O4Cl through the cell disintegrator to prepare ultrathin Bi3O4Cl nanosheet (S-Bi3O4Cl) so as to improve the photocatalytic performance of the ultrathin Bi3O4Cl nanosheet.The Bi3O4Cl photocatalyst is prepared by combining the hydrothermal method and the sintering method, the prepared Bi3O4Cl is of an irregular block structure in appearance, and the thickness of the Bi3O4Cl is about 200-400 nm; the prepared block Bi3O4Cl photocatalyst is subjected to ultrasonic stripping by using the cell disintegrator, so that the Bi3O4Cl is stripped into Bi3O4Cl nanosheets from blocks, the thickness of the nanosheets is about 10-50 nm, and the ultrathin nanosheets enable the migration rate of photon-generated carriers of the nanosheets to be high and the separation efficiencyto be high; and the material has good photocatalytic reduction performance on CO2.

Description

technical field [0001] The invention relates to the preparation of chemical substances, in particular to a method for peeling Bi 3 o 4 The method of Cl, the present invention also relates to Bi 3 o 4 Cl is reducing CO 2 aspects of application. Background technique [0002] Energy is the material basis for the survival and development of human beings, and also the material basis for the survival and development of society. Nowadays, traditional fossil energy is still in a dominant position in the energy structure, but due to the limited and non-renewable nature of fossil energy, the world will face the problem of resource depletion in the near future. Therefore, the development and utilization of new energy has become a research hotspot. Among many new energy sources, solar energy has become the focus of research because of its inexhaustible and inexhaustible advantages, and photocatalysis technology uses semiconductor photocatalysts to directly use solar energy and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J37/34B01J35/02C01B32/40
CPCB01J27/06B01J35/004B01J37/343B01J35/023C01B32/40
Inventor 金晓丽葛腾徐怡雪谢海泉
Owner NANYANG NORMAL UNIV
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