Black phosphorus-red phosphorus heterostructure material, as well as preparation method and application thereof

A heterostructure, red phosphorus technology, applied in the field of photocatalytic materials, can solve the problem of low photocatalytic activity of non-metallic photocatalytic materials, achieve excellent visible light catalytic degradation performance, promote separation and transfer, and facilitate industrialization.

Inactive Publication Date: 2016-12-07
SHENZHEN RES INST THE CHINESE UNIV OF HONG KONG
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a black phosphorus-red phosphorus heterostructure material, aiming to solve the problem of low photocatalytic activity of non-metallic photocatalytic materials in the prior art

Method used

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  • Black phosphorus-red phosphorus heterostructure material, as well as preparation method and application thereof
  • Black phosphorus-red phosphorus heterostructure material, as well as preparation method and application thereof
  • Black phosphorus-red phosphorus heterostructure material, as well as preparation method and application thereof

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preparation example Construction

[0026] And, a method for preparing a black phosphorus-red phosphorus heterostructure material, comprising the following steps:

[0027] S01. According to the mass volume ratio of amorphous red phosphorus and deionized water (1-2) g: (10-15) ml, weigh amorphous red phosphorus and add it to deionized water, and stir to form a uniform suspension;

[0028] S02. above-mentioned suspension is transferred in the autoclave and sealed;

[0029] S03. Reacting the suspension in the autoclave at 180-200° C. for 10-48 hours, washing, and vacuum-drying the obtained material to obtain a purified amorphous red phosphorus material;

[0030] S04. adding the purified amorphous red phosphorus material into an agate ball mill jar, and filling the ball mill jar with argon gas of 1 atmosphere to seal;

[0031] S05. The ball mill jar is placed on a ball mill, the reaction speed of the ball mill is 400-600 rpm, and the milling time is 0.5-18 hours, to obtain the black phosphorus-red phosphorus hetero...

Embodiment 1

[0039] Add 2 g of commercial red phosphorus into 15 mL of deionized water and stir evenly, then transfer it into a 25 mL autoclave and seal it. React at 200°C for 12 hours. The obtained purified red phosphorus is separated and washed, dried in vacuum and used for later use. Take 1.6 g of the above-mentioned purified red phosphorus and add it to a 50 mL agate ball mill jar, and add agate balls with a mass ratio of 20:1. Introduce 1 atmosphere of argon to seal. Ball mill for 2 hours at 450 rpm. The obtained material is black phosphorus-red phosphorus heterostructure material. figure 1 It is a scanning electron microscope image of the black phosphorus-red phosphorus heterostructure material obtained in Example 1, showing that the particle size of the obtained material is 1 to 2 microns; figure 2 The X-ray diffraction analysis spectrum of the black phosphorus-red phosphorus heterostructure material obtained in Example 1 shows that the obtained material is a mixed phase of bla...

Embodiment 2

[0041] The ball milling conditions were changed, the ball milling speed was 450 rpm, the ball milling time was changed from 2 hours to 18 hours, and other experimental parameters were the same as in Example 1, so that black phosphorus-red phosphorus heterostructure material particles (average diameter 0.5 microns) could be obtained. Figure 4 It is the scanning electron micrograph of the black phosphorus-red phosphorus heterostructure material prepared in Example 2.

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Abstract

The invention is applicable to the field of photocatalyst materials, and provides a black phosphorus-red phosphorus heterostructure material, a preparation method and an application thereof. The black phosphorus-red phosphorus heterostructure material is composed of red phosphorus and black phosphorus, two allotropes of phosphorus atoms, the general formula is P, and the mass of the black phosphorus-red phosphorus heterostructure material is 100%. Calculated, the mass percentage of the black phosphorus is 30-70%. The black phosphorus-red phosphorus heterostructure material has a good performance of visible light catalytic degradation of organic pollutants, and is expected to become a new type of non-metallic high-efficiency photocatalytic environmental treatment material. The preparation method of the black phosphorus-red phosphorus heterostructure material of the present invention has the advantages of simple preparation process, low cost, high yield, good repeatability, rapidity and controllable synthesis conditions.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, and in particular relates to a black phosphorus-red phosphorus heterostructure material, a preparation method and application thereof. Background technique [0002] Photocatalytic materials, especially visible light catalytic materials, can directly utilize solar energy through catalytic degradation and catalytic chemical conversion. Therefore, it has become an important object of scientific research aimed at environmental governance and sustainable development. [0003] Recently, in order to avoid the problems of secondary metal ion pollution and low resource abundance caused by commonly used transition metal oxide catalysts. Research on non-metallic photocatalytic materials with high resource reserves and low secondary pollution has gradually gained people's attention, and its representatives include g-C 3 N 4 , red phosphorus, sulfur, etc. However except g-C 3 N 4 In addition, the...

Claims

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Application Information

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IPC IPC(8): B01J27/14
Inventor 余济美沈铸睿
Owner SHENZHEN RES INST THE CHINESE UNIV OF HONG KONG
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