Graphene-Re-TiO2 multi-component nanotube material preparation method

Abstract

The invention relates to a graphene-Re-TiO2 multi-component nanotube material preparation method. The method comprises the following steps: preparation of mixing raw materials: weighing nano particles TiO2 sale in the market and a NaOH raw material according to the mass ratio of 1:8, dumping the materials into a corundum crucible; respectively weighing a compound of graphene powder and rare earth and placing the compound in the corundum crucible, fully and uniformly mixing the materials for standby; performing high temperature fusion: under room temperature, placing the corundum crucible equipped with the mixing raw materials into a vacuum high temperature furnace which can isolate the air, closing a furnace door; opening an argon flow valve, introducing argon to remove the air in the furnace body; heating the materials to the temperature of 400-500 DEG C with the heating speed of 5 DEG C / min, melting the mixing raw materials; cooling the high temperature furnace to room temperature, taking the corundum crucible out, turning off argon, forming titanate mixing alkali fusion clinker by the raw materials; extracting the material by boiling water, performing hydro-thermal processing under normal pressure; performing precipitation washing, and calcining the material to obtain the finished product. The method has the advantages of low cost and short required time, the length of the prepared nanotube is greatly increased, the property is stable, and the photocatalysis characteristic of the composite nano-material can be effectively increased.

Description

[0001] 【Technical field】 [0002] The invention belongs to a method for preparing nanomaterials, specifically a graphene-Re-TiO 2 The preparation method of multi-component composite nanotube material. [0003] 【Background technique】 [0004] TiO 2 It is an important inorganic functional material, because of its high activity, good stability, no secondary pollution, harmless to the human body and low price, it is widely used in the storage and utilization of solar energy, photoelectric conversion, photochromic and photocatalytic degradation of the atmosphere It has a wide range of applications in fields such as pollutants in water and water. [0005] Since the discovery of carbon nanotubes by Iijima in 1991, it has attracted great interest in the study of nanotube materials. TiO 2 Nanotubes (TNTs) as TiO 2 A form of nanomaterials. Due to its aspect ratio and nanoscale hollow channels, titanium dioxide with a tubular structure can be assembled into a composite nanomaterial ...

AI Technical Summary

Problems solved by technology

The more common preparation method is to avoid high-temperature calcination of graphene-TNTs in order to avoid the formation of carbon oxides, which will affect the crystallinity of TNTs and directly affect the performance of TNTs.

[0011] The shortcoming of the preparation prior art of graphene-rare earth-TNTs (Graphene-Re-TNTs, GATNTs) material: 1, use pressurized equipment such as autoclaves or carry out microwave heating operation, in carrying out industrialized production process, must Increase equipment investment and increase production cost

3. In the conventional high-pressure reactor or microwave heating for hydrothermal reaction, the doping element rare earth of the composite nanotube participates in the crystallization degree of the nanotube is not high, and there is a problem that the doping element rare earth is easy to fall off

The more common preparation method is to avoid high-temperature calcination of graphene-TNTs in order to avoid the formation of carbon oxides, which will affect the crystallinity of TNTs and directly affect the performance of TNTs.

5. So far, using the preparation process proposed by the patent number ZL200910111090.0, only the composite Ag-TiO 2 nanotube

In the above four patent specifications, there is no GMTNTs material preparation process under normal pressure

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