Preparing method for two-dimensional material-transition metal heterojunction sheet

A transition metal and two-dimensional material technology, which is applied in the field of preparation of two-dimensional material-transition metal heterojunction thin sheets, can solve the problems of complex process, large loss, and structural degradation of two-dimensional materials, so as to simplify the preparation process and improve the efficiency. , cost saving effect

Active Publication Date: 2019-08-13
深圳市中科墨磷科技有限公司
View PDF17 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In pre-stripping, storage and transfer, it will bring about the degradation of the two-dimensional material structure, performance attenuation, and the process is complicated and the loss is large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparing method for two-dimensional material-transition metal heterojunction sheet
  • Preparing method for two-dimensional material-transition metal heterojunction sheet
  • Preparing method for two-dimensional material-transition metal heterojunction sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing graphene-nickel nanosheets, comprising the steps of:

[0037](1) 0.01g block graphite crystal as the working electrode, carbon cloth as the counter electrode, connected to the wire, immersed in an organic solvent, the organic solvent is one or more mixtures of DMF, NMP, DMSO, DMI, organic The solvent contains an intercalation agent, and the intercalation agent is one or more mixtures of any quaternary ammonium cation and quaternary phosphorus cation. In this embodiment, N-methylpyrrolidone containing 0.025M tetrabutylphosphorus cation is preferred as the electrolyte , placed in an H-type electrolytic cell to form a two-electrode system.

[0038] (2) Use a DC power supply to continuously energize at a constant voltage for 10s-10h. In this embodiment, it is preferable to energize for 30 minutes, and to pass a constant current of 0.1-50 mA. In this embodiment, it is preferable to energize 5mA, and the volume of the block graphite becomes larger.

[...

Embodiment 2

[0042] A method for preparing black phosphorus-cobalt nanosheets, comprising the steps of:

[0043] (1) 0.01g block black phosphorus crystal is used as the working electrode, carbon cloth is used as the counter electrode, connected to the wire, immersed in an organic solvent, the organic solvent is one or more mixtures of DMF, NMP, DMSO, DMI, The organic solvent contains an intercalation agent. The intercalation agent is one or more mixtures of any quaternary ammonium cation and quaternary phosphorus cation. In this embodiment, N,N-dimethyl cation containing 0.05M tetrabutylammonium cation is preferred. Formamide is used as the electrolyte, which is placed in an H-type electrolytic cell to form a two-electrode system.

[0044] (2) Use a DC power supply to continuously energize at a constant voltage for 10s-10h. In this embodiment, it is preferably energized for 3 minutes, and energized at 0.1-30 V. In this embodiment, it is preferably energized at 20V. The volume of the blocky...

Embodiment 3

[0048] A method for preparing titanium selenide-cobalt nanosheets, comprising the steps of:

[0049] (1) 0.01g bulk titanium selenide crystal is used as the working electrode, the platinum sheet is the counter electrode, and the platinum wire is the auxiliary electrode, which is connected to the wire and immersed in an organic solvent. The organic solvent is DMF, NMP, DMSO, DMI One or more mixtures, the organic solvent contains an intercalation agent, the intercalation agent is one or more mixtures of any quaternary ammonium cation and quaternary phosphorus cation, preferably containing 0.025M tetrapentylammonium cation in this embodiment 1,3-dimethylimidazolidin-2-one is used as an electrolyte solution, which is placed in a three-electrode electrolytic cell to form a three-electrode system.

[0050] (2) Use the workstation to supply power for 10s-10h. In this embodiment, it is preferred to power on for 30 minutes. Cyclic voltammetry is used to measure 5mVs -1 The scanning sp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for simply and rapidly preparing a two-dimensional material-transition metal heterojunction nano sheet. In the electric field, a blocky two-dimensional crystal containing a laminar structure is converted into a few-layer sheet, and transition metal heterojunction modification is conducted on the sheet. According to the method, the blocky two-dimensional crystal serves as a work electrode, additional inert materials serve as other electrodes, all the electrodes are connected with a wire and immersed in an electrolyte, continuous electrification is conducted, andblocky two-dimensional materials are layered in a solvent containing an intercalation agent. After a period of time, transition metal positive ions are added in the same device, continuous electrification continues, the two-dimensional material-transition metal heterojunction nano sheet is obtained, an obtained product is collected, cleaned and subjected to ultrasonic treatment, and the two-dimensional material-transition metal heterojunction is obtained. Electrochemistry is utilized in the method, and a transition metal modified thin-layer two-dimensional sheet is obtained. According to the method, conditions are simple, cost is low, repeatability is good, and environment friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation, and relates to a method for preparing a two-dimensional material-transition metal heterojunction sheet. Background technique [0002] Two-dimensional materials have become one of the most active research fields in nanoscience due to their unique physical and chemical properties, and have broad application prospects in the fields of environmental protection, energy, and nanoelectronics. However, it often needs to form a heterojunction with transition metals to change its electronic state, thereby improving the performance of two-dimensional materials. At present, the common method for preparing transition metal heterojunctions of two-dimensional materials is to first peel off two-dimensional materials into thin sheets, and then construct transition metal heterojunctions on the thin sheets by hydrothermal method and vapor deposition method. In the process of pre-stripping, s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/54C25D3/12
CPCC25D3/12C25D5/54
Inventor 喻学锋刘丹妮王佳宏
Owner 深圳市中科墨磷科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap