Preparation method of two-dimensional crystal Nb2CTx nano material

A nanomaterial, two-dimensional crystal technology, applied in nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of high risk, difficult to store, strong irritation of hydrofluoric acid, etc. Gentle process, environmentally friendly results

Pending Publication Date: 2019-06-07
HOHAI UNIV
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main preparation method of MXene is to etch the MAX phase by hydrofluoric acid, but hydrofluoric acid has many disadvantages such as strong irritation, difficulty in storage, and high risk.
On the other hand, Ti 3 C 2 It is currently th

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
  • Preparation method of two-dimensional crystal Nb2CTx nano material
  • Preparation method of two-dimensional crystal Nb2CTx nano material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022] Weigh 1gLiF into the corroded bottle, measure 10mL of 12mol / L hydrochloric acid, pour it into the corroded bottle, and add 1g of Nb 2 AlC raw material was slowly added to it. After the reaction stabilizes, it is placed under 50℃ and magnetically stirred for 72 hours. The product is washed repeatedly with deionized water and centrifuged until the PH value is greater than or equal to 5, ultrasonically dispersed for 1 hour, and 5mL~100mL of water is added to obtain a concentration of 1. ~30mg / mL Nb 2 CT x The solution is centrifuged and filtered to obtain a single layer of Nb 2 CT x Thin film material, take the bottom solid and dry to obtain the multilayer two-dimensional crystal Nb 2 C nanomaterials, measuring Nb in two-dimensional crystals 2 CT x The conductivity is 500~3000S / cm.

Example Embodiment

[0023] Example 2:

[0024] Weigh 0.99g LiF into the corroded bottle, measure 10mL of 9mol / L hydrochloric acid, pour it into the corroded bottle, and add 1g Nb 2 AlC raw material is slowly added to it. After the reaction is stable, it is placed under 50℃ and magnetically stirred for 72 hours. The product is repeatedly washed with deionized water and centrifuged until the pH value is greater than or equal to 5, ultrasonically dispersed for 1 hour, and 5mL~100mL of water is added to obtain a concentration of 0.1 ~30mg / mL Nb 2 CT x The solution is centrifuged and filtered to obtain a single layer of Nb 2 CT x Thin film material, take the bottom solid and dry to obtain the multilayer two-dimensional crystal Nb 2 CT x Nanomaterials, measuring Nb in two-dimensional crystals 2 CT x The conductivity is 2000~4000S / cm.

[0025] figure 1 Two-dimensional crystal Nb 2 CT x Nanomaterial aqueous solution and Tyndall phenomenon;

[0026] figure 2 For through the two-dimensional nano-layered crysta...

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
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method of a two-dimensional crystal Nb2CTx nano material. The preparation method comprises the following steps: adding 1g of sieved ternary layered Nb2AlC ceramicpowder into a mixed solution of 5-25ml of hydrochloric acid and 0.2-2g of lithium fluoride; adding a magnetic rotor and heating and stirring the solution for a period of time in an oil bath; washing the solution with deionized water and centrifuging the solution, and repeating the operations for multiple times until the pH value is greater than 5; ultrasonically layering the solution by utilizingan ultrasonic cleaning machine, centrifuging the solution, taking an upper-layer turbid liquid, and carrying out suction filtration to obtain the single-layer two-dimensional crystal Nb2CTx nano material; drying the bottom-layer solid to obtain the multilayer two-dimensional crystal Nb2CTx nano material. The MAX phase is etched by using hydrofluoric acid and hydrochloric acid, the preparation method is simple, the reaction process is milder, the environment is protected, and the prepared MXene nano material has an obvious graphene-like two-dimensional layered structure and is expected to be applied to the fields of supercapacitors, lithium ion batteries, adsorption and the like.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, in particular to a two-dimensional crystal compound Nb 2 C and its preparation method and use. Background technique [0002] With economic development and social progress, the development and utilization of new energy plays an important role in solving severe environmental problems. As secondary energy storage devices, supercapacitors and lithium-ion batteries have high power density, long cycle life, and light environmental pollution. advantage. In recent years, with the discovery of graphene and its unique physical and chemical properties, there has been an upsurge in the study of two-dimensional crystals. Two-dimensional layered nano-compounds are materials with a graphene-like structure. Due to their high specific surface area, they have a variety of excellent properties. In addition to graphene, there are also transition metal dichalcogenides and metal oxides. In recent y...

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
IPC IPC(8): C01B32/914B82Y40/00
Inventor 应国兵马凤辰张晨宿琳刘璐张凯城
Owner HOHAI UNIV
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