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

Method for preparing nano-diamond on sodium chloride substrate

A nano-diamond and substrate technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as preparing nanodiamonds

Inactive Publication Date: 2014-06-25
CHANGCHUN INST OF TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, almost no one has prepared nanodiamonds on sodium chloride substrates

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 nano-diamond on sodium chloride substrate
  • Method for preparing nano-diamond on sodium chloride substrate
  • Method for preparing nano-diamond on sodium chloride substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Use sodium chloride as the substrate, use PECVD equipment, heat up to 800°C in a hydrogen atmosphere, and the heating rate is 20°C / min. When this temperature is reached, methane gas is introduced to make the ratio of methane and hydrogen to 1: 4. The total pressure is controlled at 1200Pa;

[0021] 2) In the PECVD equipment, after completing step 1), turn on the RF power supply, control the RF power at 260W, and the deposition time is 30-40min;

[0022] 3) After the reaction is over, continue to pass hydrogen to room temperature;

[0023] According to the exemplifying method of the above-mentioned invention, a nano-diamond material can be prepared, and this material has the following characteristics:

[0024] 1) Perform transmission electron microscope (TEM) characterization on the samples obtained by the method used in the above invention. It shows that the particle size of diamond is between 15-20nm.

[0025] 2) Raman analysis is performed on the samples obt...

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
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
lattice spacingaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing nano-diamond on a sodium chloride substrate. The method comprises the following step: preparing nano-diamond on the sodium chloride substrate by virtue of a plasma-enhanced chemical vapour deposition technology under a methane and hydrogen atmosphere. During the reaction process, the corresponding flow ratio of methane gas to hydrogen is (10-15):(75-85), the unit is millilitre per minute (sccm) in a standard state, and the temperature ranges from 750 to 850 DEG C. According to the method disclosed by the invention, hydrocarbon gases are used as carbon source gases, and reasonably proportioned with hydrogen to obtain well-crystallized nano-diamond, pre-treatment does not need to be carried out on the substrate, the nano-diamond hardly contains other carbon-based impurities, a very simple method for preparing nano-diamond is provided, and a novel growth mechanism is put forwards. The transmission electron microphotograph of the experiment finished product is shown in figure 1.

Description

technical field [0001] The present invention relates to a method for preparing nano-diamonds, more specifically, the present invention uses single-crystal sodium chloride as a substrate, and prepares nano-diamonds under methane and hydrogen atmospheres. The prepared nano-diamonds have less impurity content and are simple in method Feasible and controllable. Background technique [0002] In recent years, nanodiamond thin film materials have attracted widespread attention due to their outstanding physical and chemical properties, which are derived from the bonding structure and microstructure of carbon. Nanodiamond is mainly composed of sp 3 Composed of hybrid carbon atoms, it has high hardness and high chemical stability, and the surface hydrogenated nanodiamond has a negative electron affinity. So far, almost no one has prepared nanodiamonds on sodium chloride substrates. In this patent, we prepared nanodiamonds on NaCl substrates and proposed a new growth mechanism. Co...

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): C23C16/27C23C16/513B82Y30/00B82Y40/00
Inventor 徐强杨光敏高峰郑伟涛
Owner CHANGCHUN INST OF TECH
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