Preparation method of BiOBr/black phosphorus alkene hetero-junction nano composite material

A nano-composite material, black phosphorene technology, applied in the field of environmental pollution control, can solve the problems of poor chemical stability and easy oxidation reaction, achieve high redox ability, high photogenerated electron-hole separation ability, and improve interface phase capacitive effect

Inactive Publication Date: 2019-04-05
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, black phosphorus has poor chemical stability and is prone to oxidation reactions in air
However, the process of constructing BiOBr/black phosphorene he...

Method used

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  • Preparation method of BiOBr/black phosphorus alkene hetero-junction nano composite material
  • Preparation method of BiOBr/black phosphorus alkene hetero-junction nano composite material
  • Preparation method of BiOBr/black phosphorus alkene hetero-junction nano composite material

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Embodiment 1

[0027] A method for preparing a BiOBr / black phosphorene heterojunction nanocomposite material.

[0028] (1) With 2.91g of Bi(NO 3 ) 3 ·5H 2 O and 0.714g of KBr as raw materials were dissolved in 35mL of ethylene glycol solvent, and the KBr solution was added dropwise to Bi(NO 3 ) 3 solution and magnetically stirred for 1 h; put the mixed solution into a hydrothermal kettle, and dilute to 80% with ethylene glycol, then use solvent heat to react at 120°C for 8 h; cool to room temperature after the reaction, and wash with absolute ethanol 3 times and dried in an oven at 60°C for 12h to prepare flower-like BiOBr;

[0029] (2) Using black phosphorus block as raw material and NMP as solvent, black phosphorene was prepared by ultrasonic stripping combined with vacuum drying under the protection of atmosphere. Take 0.08g of ground black phosphorus tablets and put them into an Erlenmeyer flask filled with argon, add 20ml of NMP into the Erlenmeyer flask, seal the mouth, and ultras...

Embodiment 2

[0032] A method for preparing a BiOBr / black phosphorene heterojunction nanocomposite material.

[0033] (1) With 4.16g of Bi(NO 3 ) 3 ·5H 2 O and 1.428g of KBr were used as raw materials, respectively dissolved in 50mL of ethylene glycol solvent, and the KBr solution was added dropwise to Bi(NO 3 ) 3 solution and magnetically stirred for 1.5h; put the mixed solution into a hydrothermal kettle, and dilute to 80% with ethylene glycol, then use solvent heat to react at 120°C for 9h; Washing 3 times and drying in an oven at 60°C for 14 hours to prepare flower-like BiOBr;

[0034] (2) Using black phosphorus block as raw material and NMP as solvent, black phosphorene was prepared by ultrasonic stripping combined with vacuum drying under the protection of atmosphere. Take 0.12g of ground black phosphorus tablets and put them into an Erlenmeyer flask filled with argon, add 30ml of NMP into the Erlenmeyer flask, seal the mouth, and ultrasonicate at 10°C for 15h; put the ultrasonic...

Embodiment 3

[0037] A method for preparing a BiOBr / black phosphorene heterojunction nanocomposite material.

[0038] (1) With 5.82g of Bi(NO 3 ) 3 ·5H 2 O and 1.02g of KBr were used as raw materials, respectively dissolved in 70mL of ethylene glycol solvent, and the KBr solution was added dropwise to Bi(NO 3 ) 3 solution and magnetically stirred for 2h; put the mixed solution into a hydrothermal kettle, and dilute to 80% with ethylene glycol, and then use solvent heat to react at 120°C for 10h; cool to room temperature after the reaction, and wash with absolute ethanol 3 times and dried in an oven at 60°C for 18 hours to prepare flower-like BiOBr;

[0039](2) Using black phosphorous block as raw material and NMP as solvent, black phosphorene was prepared by using atmosphere-protected ultrasonic stripping combined with vacuum drying. Take 0.16g of ground black phosphorus tablets and put them into an Erlenmeyer flask filled with argon, add 40ml of NMP into the Erlenmeyer flask, seal the...

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Abstract

The invention discloses a preparation method of a BiOBr/black phosphorus alkene hetero-junction nano composite material. The method adopts hydroxyl induction assisted solvothermal interface co-assembly to prepare the BiOBr/black phosphorus alkene hetero-junction nano composite material. The technical method includes the following steps of taking Bi(NO3)3*5H2O and KBr as raw materials and ethyleneglycol as a solvent, and adopting a solvothermal reaction to prepare the flower-shaped BiOBr; taking a black phosphorus block as a raw material and NMP as a solvent, and adopting ultrasonic strippingwith vacuum drying to prepare black phosphorus alkene; and preforming solvent heat treatment on the BiOBr and the black phosphazene in an ethanol solvent, and utilizing the hydroxyl induction assisted solvothermal interface co-assembly to prepare the BiOBr/black phosphazene hetero-junction nano composite material. The method has the advantages of simple preparation process and low production cost, and the obtained BiOBr/black phosphazene heterojunction nano composite material has strong visible light response capability, good interface coupling property and the advantages of direct Z-type hetero-junction, so that the method is expected to be applied to photo-catalytic components to degrade organic pollutants.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a preparation method of a BiOBr / black phosphorene heterojunction nanocomposite material. Background technique [0002] Nano-BiOBr is a new type of semiconductor material, which has high catalytic activity in the photocatalytic degradation of organic pollutants due to its unique characteristics such as small forbidden band width and strong response to visible light. At present, a variety of methods have successfully prepared BiOBr nanomaterials and a large number of reports on the degradation of organic pollutants by BiOBr. However, due to the limitation of its visible light catalytic efficiency, the practical application of BiOBr nanomaterials alone is relatively small. [0003] In order to solve the key scientific problems such as the easy recombination of photogenerated electrons and holes in traditional single photocatalytic materials, and their insuffi...

Claims

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Application Information

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IPC IPC(8): B01J27/06C02F1/72C02F101/30
CPCB01J27/06B01J35/004C02F1/725C02F2101/308
Inventor 李喜宝熊杰黄军同冯志军康棒棒刘积有李海
Owner NANCHANG HANGKONG UNIVERSITY
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