Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing beta-BC2N nano-rod under temperate condition

A technology of nanorods and conditions, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve problems such as unfavorable production, expensive equipment or relatively harsh, and achieve low-cost synthesis, easy preparation scale, and product morphology Good results

Inactive Publication Date: 2010-02-10
YANSHAN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mainly include high temperature and high pressure method, chemical vapor deposition method, arc method, plasma assisted evaporation method, etc., but these preparation methods either require relatively expensive equipment or relatively harsh preparation conditions (such as temperature above 1000 ° C, pressure up to GPa), or High requirements are placed on the stability of the product, which is not conducive to production. Therefore, it is of great practical significance to develop a method with mild reaction conditions, simple operation, easy chemical control, and low-cost preparation of boron carbon nitrogen compounds.

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
  • Method for preparing beta-BC2N nano-rod under temperate condition
  • Method for preparing beta-BC2N nano-rod under temperate condition
  • Method for preparing beta-BC2N nano-rod under temperate condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Under the protection of nitrogen in the glove box, 4.096 grams of analytically pure NaN 3 Add to 30ml of distilled anhydrous acetonitrile, stir for 20 minutes to make it evenly dispersed, then add 2ml of liquid BBr 3 , continue stirring for 5 minutes, transfer the mixture to a 50ml stainless steel reaction kettle, and seal it. Place the reaction kettle in a crucible boiler, heat it at 500°C for 24 hours, then allow the kettle to cool down to room temperature naturally, and take out the product. Wash with absolute ethanol and distilled water three times in sequence, filter, and then vacuum-dry at 80°C for 6 hours to obtain β-BC containing trace oxygen defects 2 N nanorods.

Embodiment 2

[0024] Under the protection of nitrogen in the glove box, 4.096 grams of analytically pure NaN 3 Add to 10ml of distilled anhydrous acetonitrile, stir for 10 minutes to disperse evenly, then add 2ml of liquid BBr 3 , continue to stir for 2 minutes, transfer the mixture to a 15ml stainless steel reaction kettle, and seal it. Place the reaction kettle in a crucible boiler, heat it at 480°C for 30 hours, then allow the kettle to cool down to room temperature naturally, and take out the product. Wash with absolute ethanol and distilled water three times in sequence, filter, and then vacuum-dry at 80°C for 6 hours to obtain β-BC containing trace oxygen defects 2 N nanorods.

[0025] figure 1 and figure 2 Transmission and scanning electron microscope pictures of the as-prepared nanorods are given. It can be seen from the figure that all the nanorods are straight rods with a diameter ranging from 50 to 210 nm and a ratio of length to diameter of 5 to 30. The nanorods prepared ...

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
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing novel super hard material Beta-BC2N nano-rods under mild condition by utiliaing organic solvent as carbon source and reaction medium, which is characterized in that: under the protection of nitrogen, the boron source and the nitrogen source are dispersed into the organic solvent, fully stirred and then sealed in a stainless steel reaction vessel to react for 15-30 hours under 400-600 DGE C; after naturally cooling to the room temperature, the obtained product is taken out and washed by ethanol and water for 3-5 times; then, the obtained product isfiltered, dried to obtain the Beta-BC2N nano-rods with the trace oxygen defect. The invention has the advantages that the reaction is completed under relatively low temperature and pressure; the required devices are simple and the reaction is easy to be controlled; the material used in the invention are regular chemical reagent and chemical material; the operation processes are simple and industrial production with low cost can be easily realized.

Description

technical field [0001] The invention relates to a method for preparing β-BC by using an organic solvent as a carbon source and a reaction medium under low temperature and low pressure conditions 2 The method for N nanorods belongs to the technical field of preparation of novel superhard materials. Background technique [0002] The synthesis and properties of superhard materials have always been one of the focuses of condensed matter physics and material science research. Since Cohen M.L. published an article in "Science" (Science.1993, 261:307), it was proposed to obtain the bulk modulus (B) and bond length (d) of covalent materials from the bond energy and molecular volume of covalent bonds. Since the relational expression, it is expected that new superhard materials may be produced in the B-C-N ternary system phase diagram. In recent years, scientists have successfully prepared cubic boron carbon nitride (c-BCN) by high temperature and high pressure method, and measured ...

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 Patents(China)
IPC IPC(8): C01B35/14C01B21/082B82B3/00
Inventor 侯莉高发明李娜
Owner YANSHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com