Method for preparing nano particles

A carbon nanoparticle, carbon material technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as high cost and complex process, and achieve the effect of low cost and simple process

Inactive Publication Date: 2016-03-30
HEBEI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the above preparation methods have many deficiencies such as complicated process and high cost, and the particle size of the carbon nanomaterials prepared by the current method is mostly above 10 nanometers.

Method used

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  • Method for preparing nano particles
  • Method for preparing nano particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Transfer 0.5g of graphene to a KOH solution with a concentration of 1mol / L, heat at 80°C for 2h, then cool to room temperature naturally, filter, rinse with distilled water 3 times, and dry naturally; mix 3mg of CaO with 2mg of graphene Finally, add 1mL of distilled water, grind for 10min, and then dry naturally; transfer the obtained sample to a container, add 5mL of distilled water, sonicate in an ultrasonic instrument with a power of 80W for 5h, filter, and dry naturally to obtain a super carbon nanoparticles.

[0022] figure 1 It is the XRD spectrum pattern of the carbon nanoparticles prepared in Example 1. Sharp diffraction peaks of the (002) crystal plane of C and the crystal plane of C (004) appear in the figure, and no other miscellaneous peaks appear. It shows that the crystal structure of the prepared carbon nanomaterials is intact and has a high degree of crystallinity.

[0023] figure 2 The TEM photo of the carbon nanomaterial sample prepared in Example...

Embodiment 2

[0025] Move the mixture of 1.0g of carbon black and graphene into a KOH solution with a concentration of 1.5mol / L, heat at 95°C for 3h, then cool to room temperature naturally, filter, rinse with distilled water 4 times, and dry naturally; After mixing 5 mg of PdO with 2 mg of carbon mixture, add 1.5 mL of distilled water, grind for 10 min, and then dry it naturally; transfer the obtained sample to a container, add 4.5 mL of distilled water, and sonicate for 4.5 h in an ultrasonic instrument with a power of 80W. Filter and dry naturally to obtain super carbon nanoparticles. The particle size of the obtained carbon nanoparticles is about 2 nanometers.

Embodiment 3

[0027] Move 1.2g of acetylene black into NaOH solution with a concentration of 0.5mol / L, heat at 75°C for 3h, then cool to room temperature naturally, filter, rinse with distilled water 5 times, and dry naturally; treat 5mgPdO with 2mg acetylene black, then add 1.8mL of distilled water, grind for 15min, and then dry naturally; transfer the obtained sample to a container, then 3.0mL of distilled water, sonicate in an ultrasonic instrument with a power of 90W for 6h, filter, and let it dry naturally Dry to get super carbon nanoparticles. The prepared carbon nanoparticles have a particle size of about 2 nanometers.

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Abstract

The invention discloses a method for preparing a super carbon nano material. The preparation process comprises the following steps of transforming a carbon material to alkali solution with the concentration of 0.3-2mol / L, heating for 1-3h at 70-100DEG C, naturally cooling to the room temperature, filtering, washing for 3-5 times with distilled water, and naturally airing; weighing metallic oxide and carbon material treated by alkali solution at the molar ratio of 1:(1-5); mixing, and adding distilled water of which the volume is 1-3 times of that of a dry mixture; grinding for 5-30min, and then naturally airing; transferring to a container, then adding distilled water of which the volume is 5-10 time of that of the sample, carrying out ultrasound treatment in ultrasound equipment with the power of 80-100W for 3-7h, filtering, and naturally airing to obtain the super carbon nano particle material. The process is simple in process, is low in production cost and is green and environmentally friendly. The prepared super carbon nano material with the grain size about 2nm and good crystal form is expected to be a new catalyst support and a lithium negative electrode and storage battery carbon dopant material.

Description

technical field [0001] The invention relates to a method for preparing nanoparticles, in particular to a method for preparing carbon nanoparticles, and belongs to the field of material technology. Background technique [0002] Carbon nanomaterials, because of their excellent physical and chemical properties such as high electrical conductivity, large specific surface area, and stable chemical properties, have important application values ​​in catalyst supports, lithium battery negative electrode materials, and battery dopants. Super carbon nanomaterials usually refer to carbon nanomaterials with a particle size below 5 nanometers. Recent studies have found that super carbon nanomaterials have many unexpected properties such as special fluorescence properties, high biocompatibility, and special quantum dot effects, and have potential application values ​​in biosensors and microelectronic devices. Therefore, the preparation of super carbon nanomaterials, that is, the preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00
CPCB82Y30/00C01P2002/72C01P2004/04C01P2004/64
Inventor 丁克强王然赵棉赵婧陈昱萦张燕魏斌娟王庆飞
Owner HEBEI NORMAL UNIV
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