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Carbon material-black phosphorene composite aerogel and preparation method thereof

A technology of composite aerogels and carbon materials, applied in the fields of phosphorus compounds, chemical instruments and methods, phosphorus, etc., can solve problems such as limiting the development of black phosphorene materials, achieve excellent photothermal conversion characteristics, ensure integrity, and good electrical conductivity sexual effect

Active Publication Date: 2018-04-20
HUBEI MOPHOS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, most of the research on black phosphorene is mainly based on black phosphorene nanosheets or black phosphorus quantum dots, which limits the further development of black phosphorene materials to some extent.

Method used

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  • Carbon material-black phosphorene composite aerogel and preparation method thereof
  • Carbon material-black phosphorene composite aerogel and preparation method thereof
  • Carbon material-black phosphorene composite aerogel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take 2mg of multi-walled carbon nanotubes with a diameter of about 15nm and a length of about 20μm and 1mg of two-dimensional black phosphorus nanosheets with an average size of 5μm and a thickness of 2nm, mix and disperse them in isopropanol, and then mix the mixture at 1500rpm / min Stir at a speed of 2h, then centrifuge the mixed solution at 10000rpm / min for 3min, ultrasonically disperse the precipitated part in cyclohexane (ultrasonic time is 10min, ultrasonic power 600W), then let it stand for 10min, and then place it at -80°C Freezing for 2 hours, followed by freeze-drying, the freeze-drying temperature is -80°C, the vacuum value is 0.01mbar, and the freeze-drying time is 12 hours, and the multi-walled carbon nanotube-herophosphorene composite airgel can be obtained.

[0049] The photothermal conversion efficiency of the prepared multi-walled carbon nanotubes-black phosphorene composite airgel is 11%, and the density is 5.1mg / cm 3 , with a porosity of 80% and a spec...

Embodiment 2

[0053] Take 1 mg of graphene with an average size of 5 μm and a thickness of about 3 nm and 1 mg of two-dimensional black phosphorus nanosheets with an average size of 2 μm and a thickness of 6 nm, mix and disperse them in isopropanol, and then stir the mixture at a speed of 1000 rpm / min 3h, then centrifuge the mixed solution at 10000rpm / min for 5min, ultrasonically disperse the precipitated part in cyclohexane (ultrasonic time is 8min, ultrasonic power 800W), then let stand for 15min, and then freeze at -70°C for 3h, Then carry out freeze-drying, the freeze-drying temperature is -70 ° C, the vacuum value is 0.1 mbar, and the freeze-drying time is 24 hours, and the graphene-black phosphorene composite airgel can be obtained.

[0054] The photothermal conversion efficiency of the prepared graphene-black phosphorene composite airgel is 14%, and the density is 6.2mg / cm 3 , with a porosity of 75% and a specific surface area of ​​1000m 2 / g.

[0055] figure 2 For the micrograph...

Embodiment 3

[0057] Take 0.5 mg of single-walled carbon nanotubes with a diameter of about 2 nm and a length of about 5 μm and 1 mg of two-dimensional black phosphorus nanosheets with an average size of 8 μm and a thickness of 3 nm, mix and disperse them in isopropanol, and then mix the mixture at 800 rpm / Min speed stirring for 2h, and then the mixed solution was centrifuged at 10000rpm / min for 6min, and the precipitated part was ultrasonically dispersed in cyclohexane (ultrasonic time was 15min, ultrasonic power 300W), then stood still for 12min, and then placed at -60 ℃ freezing for 5 hours, followed by freeze-drying, the freeze-drying temperature is -60°C, the vacuum value is 1mbar, and the freeze-drying time is 18 hours, and the single-wall carbon nanotube-herophosphorene composite airgel can be obtained.

[0058] The photothermal conversion efficiency of the prepared single-wall carbon nanotube-black phosphorene composite airgel is 18%, and the density is 4.5mg / cm 3 , with a porosity...

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Abstract

The invention discloses a carbon material-black phosphorene composite aerogel and a preparation method and application thereof. The carbon material-black phosphorene composite aerogel is formed by mutual winding of a two-dimensional black phosphorus nano-chip mesh and a carbon material mesh. Different from a conventional aerogel preparation method, the method provided by the invention is characterized in that no chemical cross-linking agent is required, the preparation process is simple in step and convenient to operate, saves time, is efficient, and causes no pollution to environments and material surfaces. The prepared carbon material-black phosphorene composite aerogel has a relatively low density, relatively high porosity and specific surface area and a relatively good photothermal conversion effect, combines excellent physical and chemical properties of black phosphorene, functional characteristics of a carbon material and ultralight and porous characteristics of aerogel, and therefore, lays a solid foundation for further expansion of black phosphorene product series and application.

Description

technical field [0001] The invention relates to the field of airgel materials, in particular to a carbon material-black phosphorene composite airgel and a preparation method thereof Background technique [0002] Airgel is a new type of porous structure material, which has excellent characteristics such as small density, rich pore structure and high specific surface area, and is widely used in chemical engineering, biomedicine, aerospace, military transportation and other fields . Since the discovery of silica aerogels, various new material aerogels have emerged, such as aluminum oxide aerogels, titanium carbide aerogels, and graphene aerogels. [0003] In recent years, a new type of direct bandgap two-dimensional semiconductor material - black phosphorene, has become a research hotspot. Compared with other two-dimensional materials, black phosphorene has many unique advantages. For example, the bandgap (0.3-2.0eV) of black phosphorene can be adjusted in a wide range by th...

Claims

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Application Information

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IPC IPC(8): C01B32/158C01B25/00
CPCC01B25/003C01B2202/06C01P2004/01C01P2006/10C01P2006/12C01P2006/40C01P2006/60
Inventor 喻学锋高明黄浩刘丹妮
Owner HUBEI MOPHOS TECH CO LTD
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