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Method for preparing inorganic nano-tube by employing porous templates

A technology of inorganic nanotubes and porous templates, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve problems such as limitations, complicated post-processing operations, and limited applications, so as to achieve simple and easy experimental operations and avoid complicated operations. , the effect of broad application prospects

Inactive Publication Date: 2011-06-15
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0004] The traditional template synthesis method mainly combines electrochemical technology, sol-gel and other technologies to deposit nanotubes or nanowires of the required materials in the pores of the porous template. This method not only requires high experimental operating conditions and skills, but also sample preparation. And the post-processing operation is complicated, there must be a separate template heat treatment process, and it is only limited to the preparation of binary system nanotubes, which greatly limits the application of this method

Method used

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  • Method for preparing inorganic nano-tube by employing porous templates
  • Method for preparing inorganic nano-tube by employing porous templates
  • Method for preparing inorganic nano-tube by employing porous templates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, preparation ZnS inorganic nanotube

[0037] Using zinc diethyldithiocarbamate as raw material, its mass is 0.5g. The raw material was placed upstream of a tube furnace, and an alumina template with a pore size of 200 nm was vertically placed in the center of the furnace. With high purity N 2 As the carrier gas, the mass flow meter is used to control the gas flow, and the valve is used to control the pumping speed of the vacuum pump to control the pressure of the furnace. During the reaction, the carrier gas flow rate is controlled at 20SCCM, the furnace pressure is controlled at 20Pa, and the temperature of the tube furnace is raised to the reaction temperature of 420°C. At this time, the temperature of the raw material is 150°C. When the furnace temperature reaches the required temperature, the furnace temperature is controlled at the reaction temperature for 240min. . After slowly cooling down to room temperature, the template loaded with ZnS was take...

Embodiment 2

[0039] Embodiment 2, preparation Zn 0.5 Cd 0.5 S Inorganic Nanotubes

[0040] A mixture of zinc diethyldithiocarbamate and cadmium diethyldithiocarbamate with a molar ratio of 1:1 is used as a raw material, and its mass is 4 g. The raw material was placed upstream of a tube furnace, and an alumina template with a pore size of 200 nm was vertically placed in the center of the furnace. With high purity N 2 As the carrier gas, the mass flow meter is used to control the gas flow, and the valve is used to control the pumping speed of the vacuum pump to control the pressure of the furnace. During the reaction, the carrier gas flow rate is controlled at 90SCCM, the furnace pressure is controlled at 90Pa, and the temperature of the tube furnace is raised to the reaction temperature of 430°C. At this time, the temperature of the raw material is 150°C. When the furnace temperature reaches the required temperature, the furnace temperature is controlled at the reaction temperature for ...

Embodiment 3

[0042] Embodiment 3, preparation CdS inorganic nanotube

[0043] Using zinc cadmium diethyldithiocarbamate as raw material, its mass is 2g. The raw material was placed upstream of a tube furnace, and an alumina template with a pore size of 200 nm was vertically placed in the center of the furnace. With high purity N 2 As the carrier gas, the mass flow meter is used to control the gas flow, and the valve is used to control the pumping speed of the vacuum pump to control the pressure of the furnace. During the reaction, the carrier gas flow rate is controlled at 80SCCM, the furnace pressure is controlled at 80Pa, and the temperature of the tube furnace is raised to the reaction temperature of 420°C. At this time, the temperature of the raw material is 150°C. When the furnace temperature reaches the required temperature, the furnace temperature is controlled at the reaction temperature for 20 minutes. . After slowly cooling down to room temperature, the template loaded with cadm...

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Abstract

The invention discloses a method for manufacturing inorganic nanometer tube with a multi-hole die plate, which includes the following procedures: 1) a reactant and a multi-hole die plate are placed into a pipe heater respectively and then is filled with inert gas; 2) the temperature of the pipe heater is raised to 300-1000 DEG C to carry out isothermal reaction and obtain a multi-hole die plate with inorganic nanometer tube; 3) the multi-hole die plate is removed with solvent; wherein, the solvent only reacts with the multi-hole die plate and does not react with the inorganic nanometer tube; the multi-hole die plate is alumina multi-hole die plate with the bore diameter of 4nm-80Mum and the thickness of 5Mum-200Mum; the carrier gas flow rate is 5-500 SCCM, and the pressure inside the pipeheater is 5-10<6> Pa; the time of the isothermal reaction is 1 minute-20 hours. The method is simple and easy to operate, and can effectively regulate the diameter, the length and the wall thickness of the nanometer tube and can obtain multi-component system inorganic nanometer tubes with different doping proportion. The method provided by the invention has wide application prospect in the manufacturing field of nanometer materials.

Description

technical field [0001] The invention relates to a method for preparing inorganic nanotubes with a porous template. Background technique [0002] Nanomaterials, especially nanomaterials with different shapes, exhibit specific physical properties in terms of light, electricity, and magnetism, making the research and development of nanomaterials increasingly a hot topic and an emerging topic. Since Iijima discovered carbon nanotubes in 1991, researchers have paid more and more attention to the preparation and performance of nanotubes of different materials. Existing research results show that nanotube materials are important components and connection components in optoelectronic nanodevices such as single-molecule transistors, electron emission flat panel displays, and chemical sensors. Due to the diversity, multifunctionality and potential application value of inorganic compounds, it is increasingly urgent to study easy and feasible methods for preparing inorganic nanotubes. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00
Inventor 姚建年马颖翟天佑
Owner INST OF CHEM CHINESE ACAD OF SCI
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