Novel two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material as well as preparation method and application thereof

A nanosheet and solar energy technology, which is applied in the field of new two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production materials, can solve the problems of weak absorption of visible light and near-infrared light, containing precious metals, complicated preparation process, etc.

Inactive Publication Date: 2018-11-06
HANGZHOU DIANZI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The first purpose of the present invention is to propose a two-dimensional black phosphorus nanosheet-MoS in view of the shortcomings of the existing solar hydrogen production materials, such as weak absorption of visible light and near-infrared light, containing precious metals, and complicated preparation processes. 2 Composite solar hydrogen production materials

Method used

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  • Novel two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material as well as preparation method and application thereof
  • Novel two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material as well as preparation method and application thereof
  • Novel two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1-1

[0023] Add 20 mg of black phosphorus crystal powder and 20 mg of NaOH to 50 ml of N-methylpyrrolidone solution, sonicate for 24 hours in a cell disruption ultrasonicator, and then centrifuge at 2500 rpm / min for 10 minutes to remove large black phosphorus particles, and collect the upper suspension. The suspension was centrifuged at 10,000 rpm / min for 10 minutes, and the resulting fine black phosphorus nanosheet solids were collected. Such as figure 1 As shown in (a), the size of black phosphorus nanosheets is in the range of 100-500nm. image 3 The XRD plot of black phosphorus nanosheets is given, which proves the generation of black phosphorus nanosheets.

Embodiment 2-1

[0025] 40ml of N,N-dimethylformamide (DMF) solution containing 10mg of black phosphorus nanosheets and 16mg of ammonium tetrathiomolybdate was added to a reactor with a capacity of 50ml, and the reactor was reacted at 200°C for 24h. After cooling to room temperature after the reaction, centrifuge at 4000rpm / min to obtain black phosphorus nanosheets / MoS 2 (1:1) Composite solar hydrogen production materials. Such as figure 1 As shown in (b), the size of black phosphorus nanosheets is in the range of 100-500nm, with a typical two-dimensional structure. Such as figure 2 As shown in the TEM image, black phosphorus nanosheets successfully grew MoS 2 Nanosheets have a typical two-dimensional structure. image 3 Black phosphorus nanosheets / MoS 2 (1:1) XRD map, which proves that black phosphorus nanosheets / MoS 2 (1:1) generation.

Embodiment 2-2

[0027] 40ml of N,N-dimethylformamide (DMF) solution containing 50mg of black phosphorus nanosheets and 16mg of ammonium tetrathiomolybdate was added to a reactor with a capacity of 50ml, and the reactor was reacted at 180°C for 25h. After cooling to room temperature after the reaction, centrifuge at 4000rpm / min to obtain black phosphorus nanosheets / MoS 2 (5:1) Composite solar hydrogen production materials. Such as figure 1 As shown in (b), the size of black phosphorus nanosheets is in the range of 100-500nm, with a typical two-dimensional structure.

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Abstract

The invention provides a novel two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material as well as a preparation method and application thereof. The novel two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material provided by the invention is prepared by using simple ultrasonic peeling and solvent thermal reaction methods, and the black phosphorus nanosheet-MoS2 composite solar hydrogen production material is of a typical two-dimensional composite structure. The developed two-dimensional black phosphorus nanosheet-MoS2 composite solar hydrogen production material can be effectively applied to hydrogen preparation from photocatalytic decomposition water. The two-dimensional black phosphorus nanosheet-MoS2 composite solarhydrogen production material provided by the invention has the advantages of being green and environmental-friendly, low in cost, good in visible light response, good in stability, simple in preparation process, and the like.

Description

technical field [0001] The invention belongs to the field of new energy materials, in particular to a novel two-dimensional black phosphorus nanosheet-MoS 2 Composite solar hydrogen production materials and their applications. Background technique [0002] With the rapid development of science and technology, the needs of human beings for a better life are multi-faceted, multi-level, and multi-field, especially the demand for green and sustainable energy is increasing day by day. At present, the main ways for people to obtain energy are coal, oil and natural gas. However, these fossil resources on the earth are limited, and with the use of large-scale coal, petroleum and other fuels, a large amount of greenhouse gases and toxic and harmful nitrogen oxides, sulfur compounds, etc. are produced, which can easily cause the greenhouse effect, acid rain, and smog environmental issues such as the hole in the ozone layer. At present, the search and development of clean and renewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J35/02C01B3/04
CPCB01J27/19B01J35/004B01J35/02C01B3/042C01B2203/1005C01B2203/1041Y02E60/36
Inventor 元勇军白王峰丁明烨吴诗婷
Owner HANGZHOU DIANZI UNIV
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