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Ultrathin black phosphorene non-metal promoter material, as well as preparation method and composite material of ultrathin black phosphorene non-metal promoter material

A technology of co-catalysts and composite materials, which is applied in the fields of catalyst activation/preparation, non-metallic elements, chemical instruments and methods, etc., can solve problems such as being easily oxidized, and achieve simple operation, universality, wide application prospects and use. effect of value

Inactive Publication Date: 2019-03-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a disadvantage of black phosphorus, that is, it is easily oxidized

Method used

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  • Ultrathin black phosphorene non-metal promoter material, as well as preparation method and composite material of ultrathin black phosphorene non-metal promoter material
  • Ultrathin black phosphorene non-metal promoter material, as well as preparation method and composite material of ultrathin black phosphorene non-metal promoter material
  • Ultrathin black phosphorene non-metal promoter material, as well as preparation method and composite material of ultrathin black phosphorene non-metal promoter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Ultrathin black phosphorene prepared by peeling off

[0032] Weigh 0.05g block BP and place it in a 100ml plastic beaker, add 50ml liquid nitrogen, put it in a vacuum flask, and freeze it for 2h. The block black phosphorus after freezing treatment is dispersed in the 99% 1-methyl-N-pyrrolidone (NMP) solution of 50ml, in the supersonic wave of 400W 4h; Centrifuge for 10 minutes; after removing the block BP that has not been successfully peeled off, transfer the obtained suspoemulsion to a centrifuge tube, put it into a vacuum freeze dryer, set the freezing temperature to -50°C, and vacuum freeze dry for 8 hours to finally obtain a fluffy black The powder is ultra-thin black phosphorene.

Embodiment 2

[0033] Example 2: Preparation of ultra-thin black phosphorene and photocatalyst composite material

[0034] Select photocatalyst 2D C 3 N 4 ; Weigh 50 mg of 2D C 3 N 4 Put it in a beaker, add 20ml 99% 1-methyl-N-pyrrolidone (NMP) solution, stir for 0.5h with high-purity argon, then add 2.5mg ultra-thin black phosphorene and stir for 24h; after stirring, centrifuge, ethanol After washing, the obtained precipitate was dried in a vacuum oven at 40°C; after drying, the resultant was calcined at 200°C for 2 hours under a high-purity argon atmosphere, and the final product was a composite material.

[0035] The structural test of the prepared ultrathin black phosphorene was carried out on a German Bruker D8 type ray diffractometer (XRD) (Cu-Kα ray, The range is 10°-80°), and its XRD pattern is as follows figure 1 shown. Depend on figure 1 It can be seen that BP has diffraction peaks at 17.3°, 34.5° and 52.6°, corresponding to (020), (040) and (060) crystal planes, respective...

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Abstract

The invention relates to the technical field of photocatalyst preparation, and particularly relates to an ultrathin black phosphorene non-metal promoter material, as well as a preparation method and acomposite material of the ultrathin black phosphorene non-metal promoter material. Liquid nitrogen low temperature pretreatment is beneficial to ultrasonic assisted liquid phase stripping of a layered material, so that the stripping efficiency is improved, and a high quality and high yield ultrathin black phosphorene nanosheet is prepared; the prepared ultrathin black phosphorene nanosheet, as anon-metal promoter material, can form strong electronic coupling with a photocatalyst material, which is favorable for rapid migration of photogenerated charges and provides a relatively large specific surface area to expose more active sites; the ultrathin black phosphorene non-metal promoter material is high in photocatalytic performance.

Description

technical field [0001] The invention relates to the technical field of photocatalyst preparation, in particular to an ultra-thin black phosphorene non-metal co-catalyst, a preparation method and a composite material composed of the co-catalyst. Background technique [0002] Environmental degradation and energy depletion are two major problems that modern society needs to solve. At present, the use of photocatalytic technology to degrade organic pollutants and photolysis of water to produce hydrogen have become the most active research directions. Combining the degradation of organic pollutants with water splitting to produce hydrogen, and realizing the simultaneous achievement of killing two birds with one stone, will be a hotspot in the field of photocatalysis in the future and has a good development prospect. [0003] As a new material, black phosphorus (BP) has become a research hotspot in recent years. BP has a folded honeycomb layer structure, and the layers are combi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/14B01J27/24B01J37/08C01B3/04C02F1/30C02F101/30
CPCC01B3/042C02F1/30B01J27/14B01J27/24B01J37/082C02F2305/10C02F2101/30C01B2203/1094C01B2203/0277B01J35/39Y02E60/36
Inventor 许晖张小妮李华明朱兴旺宋艳华
Owner JIANGSU UNIV
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