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Preparation of sno by online pyrolysis and atomization of composite precursor 2 /Amorphous carbon nanocomposite method

A nanocomposite material and amorphous carbon technology, applied in the field of nanomaterials, can solve the problems of discontinuous preparation steps, high production costs, and insufficient raw material utilization, and achieve the effect of simple preparation process

Inactive Publication Date: 2020-11-17
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method overcomes the traditional SnO 2 / Amorphous carbon nanocomposites have the disadvantages of non-continuous preparation steps, small batches, insufficient utilization of raw materials, large amounts of waste liquid and high production costs. They have the advantages of simple, fast, and environmentally friendly preparation processes. Cost-effective preparation of high-quality SnO 2 / Amorphous carbon nanocomposites offer feasibility

Method used

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  • Preparation of sno by online pyrolysis and atomization of composite precursor <sub>2</sub> /Amorphous carbon nanocomposite method
  • Preparation of sno by online pyrolysis and atomization of composite precursor <sub>2</sub> /Amorphous carbon nanocomposite method
  • Preparation of sno by online pyrolysis and atomization of composite precursor <sub>2</sub> /Amorphous carbon nanocomposite method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: SnO 2 / Preparation of amorphous carbon nanocomposites.

Embodiment 1-1

[0026] A. Preparation of precursor sol: Add tin tetrachloride (1g) to 15g ethanol and stir for 2-6 hours to obtain a transparent and clear solution; add 1.6g glucose to the obtained solution and stir to dissolve evenly.

[0027] B. SnO 2 / Preparation of amorphous carbon nanocomposite material: atomize the sol with an ultrasonic atomizer, pass in argon gas with a flow rate of 1L / min, and introduce the composite precursor aerosol into a quartz tube preheated to 1100°C; The nanoparticles are collected at the end of the tube, and the obtained SnO 2 / Amorphous carbon nanocomposites are characterized by SEM, XRD, Raman and other analytical means after washing, vacuum drying and other steps.

[0028] It can be observed that the material prepared in Example 1-1 has relatively serious agglomeration ( figure 2 (a)). X-ray diffraction pattern ( image 3 ) and the Raman spectrum ( Figure 4 ) proved that the material is SnO 2 / Amorphous carbon nanocomposites.

Embodiment 1-2

[0030] A. Preparation of precursor sol: Add tin tetrachloride (1g) to 20g ethanol and stir for 2-6 hours to obtain a transparent and clear solution; add 1.4g glucose to the obtained solution and stir to dissolve evenly.

[0031] B. SnO 2 / Preparation of amorphous carbon nanocomposite beads: atomize the sol with an ultrasonic atomizer, and pass in argon gas with a flow rate of 2L / min; collect the nanoparticles at the end of the quartz tube, and obtain the SnO 2 / Amorphous carbon nanocomposites are characterized by SEM, XRD, Raman and other analytical means after washing, vacuum drying and other steps.

[0032] It can be observed that the SnO prepared in Example 1-2 2 / Amorphous carbon nanocomposites present a partial nano-spherical structure, and the agglomeration phenomenon between nanoparticles is improved ( figure 2 (b)). X-ray diffraction pattern ( image 3 ) and the Raman spectrum ( Figure 4 ) proves that the prepared material is SnO 2 / Amorphous carbon nanocomp...

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Abstract

The invention discloses a method for preparing a SnO2 / amorphous carbon nano-composite material by on-line pyrolysis of an atomized compound precursor. The method comprises: converting a SnO2 alcohol sol-glucose mixture in a specific ratio as a precursor into precursor aerial fog through a piezoelectric ceramic ultrasonic atomizer, introducing the aerial fog into a tubular furnace with a hollow quartz glass tube through inert carrier gas, and carrying out pyrolysis conversion on the precursor aerial fog through a heat source so that on-line preparation of the SnO2 / amorphous carbon nano-composite material is realized. The method solves the problem that the conventional SnO2 / amorphous carbon nano-composite material preparation method has no continuous processes and a low capacity, does not fully utilize raw materials, produces a large amount of a waste liquid and has a high production cost. The method has the advantages of simple processes, fastness and environmental friendliness and realizes continuous, batch and low cost preparation of the high quality SnO2 / amorphous carbon nano-composite material.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and relates to an online pyrolysis and atomization composite precursor for preparing SnO 2 / Amorphous carbon nanocomposites method. [0002] technical background [0003] Tin dioxide (SnO 2 ) is an important class of wide-bandgap semiconductor materials. Due to its special electrical, optical, and electrochemical properties, it has good application value and prospects in the fields of semiconductors, energy storage, and photoelectric catalysis. where SnO 2 Nanomaterials have become a research hotspot in the fields of new electrochemical energy storage materials, sensors, and electrochemical catalysis due to their advantages such as good performance, low price, and easy preparation. At the same time, SnO can be obtained by compounding with other materials such as amorphous carbon, graphene, and carbon nanotubes. 2 Nanocomposites, and can further improve the performance of such materials. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02C01B32/15
CPCC01B32/15C01G19/02
Inventor 陆潇晓鲍亮陈逸凡杨涛朱怡雯熊琴琴季振国童林聪
Owner HANGZHOU DIANZI UNIV