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A kind of ceria/titanium nitride nanotube with ce-mof as precursor and its preparation method and application

A technology of ceria and titanium nitride, used in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., to achieve the effects of high electrical conductivity, easy operation, and good electrochemical performance

Inactive Publication Date: 2021-07-09
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the catalysts prepared with Ce-MOF as the precursor are basically supported on TiO 2 Or on carbon black, loading on TiN nanotube structure has not been reported yet

Method used

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  • A kind of ceria/titanium nitride nanotube with ce-mof as precursor and its preparation method and application
  • A kind of ceria/titanium nitride nanotube with ce-mof as precursor and its preparation method and application
  • A kind of ceria/titanium nitride nanotube with ce-mof as precursor and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 0.90g of cerium acetate and 0.75g of terephthalic acid, dissolve them in 50mL of methanol, mix them evenly, add them to a 100mL flask, put them in an oven, keep them warm at 180°C for 8h, and take them out after cooling down to room temperature to obtain a sample . Afterwards, the samples were dried in a vacuum oven for 16 hours to obtain the Ce-MOF-1 precursor framework.

Embodiment 2

[0037] Weigh 1.02g of cerium acetate and 0.88g of adipic acid, dissolve them in 100mL of dipropylformamide, mix them evenly, add them to a 100mL flask, put them in an oven, keep them warm at 50°C for 8h, and take them out after cooling down to room temperature The sample was obtained by filtration. Afterwards, the samples were dried in a vacuum oven for 16 hours to obtain the Ce-MOF-2 precursor framework.

Embodiment 3

[0039] 1. Add 2.12g of Ce-MOF-1 precursor framework and 25.62g of titanyl sulfate into an autoclave with a polytetrafluoroethylene liner (100mL) in sequence, then add 20mL of butanediol, 20mL of butyl ether and 40mL of absolute ethanol, and mix the reactants evenly.

[0040] 2. Add the above mixture into a polytetrafluoroethylene liner and put it into the reaction kettle, and react at 200°C for 17h;

[0041] 3. Allow the reaction kettle to cool down to room temperature naturally, then filter, wash with ethanol, and then place it in an oven at 60°C for 16 hours of drying;

[0042] 4. Put it in a muffle furnace for calcination at 250°C for 5 hours, and finally in a tube furnace for 5 hours at 800°C to obtain CeO 2 / Titanium Nitride Nanotubes (CeO 2 / TiN NTs).

[0043] figure 1 For the CeO prepared in this example 2 / SEM photo of TiN NTs. From figure 1 It can be seen that the resulting CeO 2 / TiN NTs with an average diameter of 50-200nm, CeO composed of Ce-MOF-1 and titan...

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Abstract

The invention belongs to the technical field of catalyst materials and discloses a ceria / titanium nitride nanotube (CeO 2 / TiN NTs) and their preparation methods. The cerium oxide / titanium nitride nanotubes are prepared by dissolving the Ce-MOF precursor framework and the titanium source in a solvent, adding them into a high-pressure reactor, and reacting at 110-200° C. After the reaction, cooling, filtering, It is obtained by washing, drying, and calcination, followed by post-nitridation treatment. The titanium nitride nanotube has regular morphology, large specific surface area and good electrochemical performance. The method requires simple equipment, is easy to operate, has low raw material prices, and is expected to be mass-produced. It can be widely used in the fields of photocatalytic materials, dielectric and microwave absorbing materials, high temperature microwave absorbing materials, electrode catalyst carrier materials and heat conducting materials.

Description

technical field [0001] The invention belongs to the technical field of catalyst materials, more specifically, relates to a ceria / titanium nitride nanotube (CeO 2 / TiN NTs) and their preparation methods and applications. Background technique [0002] Titanium nitride (TiN) is a cubic crystal system, which has the characteristics of high hardness, high melting point and high temperature chemical stability, and is a good electrical and thermal conductor. Compared with zero-dimensional TiN particles, the hollow and porous one-dimensional TiN nanotubes (TiN NTs) have a larger specific surface area, which improves the mass transfer rate during the reaction. Due to the interaction between nanotubes, the electrical conductivity is greatly improved, which is conducive to the conduction of electrons. There are also related reports on the research on titanium nitride nanotubes as the carrier. Zhao Fengming et al. (Zhao Fengming, Wen Gang, Kong Liyao, et al. Electrochemical performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10C09K5/00H05K9/00
CPCH05K9/0081C09K5/00B01J27/24B01J35/33B01J35/615B01J35/647B01J35/39
Inventor 周秋曼潘湛昌黄钊杰陈啸翔冯广文肖楚民魏志钢胡光辉
Owner GUANGDONG UNIV OF TECH