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Preparation method of wrinkly nano-rGO composite material, and preparation method of wrinkly nanometer metal oxide

A composite material and nano-metal technology, which is applied in the field of preparation of metal oxide nano-materials, can solve the problems of non-sustainability and batch size, high requirements for experimental conditions, complicated and difficult operations, etc., and achieves good potential for subsequent related analysis applications. , The effect of easy availability of raw materials and low cost

Inactive Publication Date: 2019-01-11
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current preparation process of nano-metal oxide / rGO composites is complicated and cannot be obtained in one step, and it takes a long time to prepare a large amount of oxides; when preparing rGO composites, a wide variety of catalysts and reducing agents are used, and the reaction process is complicated. Some existing technologies also need to use strong acid or strong alkali for pretreatment or participating in the reaction, which requires high experimental conditions and complicated operation; and the prior art has wrinkled nano-rGO composite materials and wrinkled nano-metal oxides. Preparation is not continuous and batch

Method used

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  • Preparation method of wrinkly nano-rGO composite material, and preparation method of wrinkly nanometer metal oxide
  • Preparation method of wrinkly nano-rGO composite material, and preparation method of wrinkly nanometer metal oxide
  • Preparation method of wrinkly nano-rGO composite material, and preparation method of wrinkly nanometer metal oxide

Examples

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Embodiment 1

[0036] combine Figures 1 to 3 As shown, the preparation method of a wrinkled nano-rGO composite material provided in this embodiment specifically includes the following steps:

[0037] (1) Put 30ml of GO with a concentration of 10mg / ml and 250ml of deionized water in a beaker, and ultrasonically stir for 1min or magnetically stir for 5min at room temperature to make a GO aqueous dispersion; weigh 600mg of CoCl 2 ·6H 2 O solid was dissolved in 20ml deionized water; the prepared metal salt solution was mixed with GO aqueous dispersion, and magnetically stirred for 2h to obtain GO and CoCl 2 ·6H 2 O concentration ratio is a mixed solution of 1:2;

[0038] (2) Heat the tube reactor to 700°C, then atomize the mixture into droplets through an ultrasonic nebulizer, and then pump the droplets to the tube reactor through a vacuum pump, where the droplets are dried at high temperature in the tube reactor. Decompose and crystallize to form solid particles and adsorb to the collectio...

Embodiment 2

[0041]combine Figure 4 As shown, this example is the same as Example 1, the only difference is that this example provides a method for preparing a wrinkled nano-metal oxide, which specifically includes the following steps: the wrinkled nano-Co obtained in Example 1 3 o 4 The / rGO composite material is put into a crucible and calcined together with the crucible in a tubular reactor under an air atmosphere. The calcination process is as follows: after heating from room temperature to 400 °C at a heating rate of 10 °C / min, heat preservation at 400 °C After 3h, after cooling to room temperature with the furnace, the wrinkled nano-Co 3 o 4 powder material.

Embodiment 3

[0043] combine Figure 5 As shown, this example is the same as Example 1, the only difference is that this example provides a method for preparing a wrinkled nano-metal oxide, which specifically includes the following steps: the wrinkled nano-Co obtained in Example 1 3 o 4 The / rGO composite material is put into the crucible, and is calcined together with the crucible in the tubular reactor under the air atmosphere. The calcination process is as follows: 2 After heating from room temperature to 400°C at a heating rate of 1°C / min under atmosphere, heat preservation treatment at 400°C for 1 hour, then heat preservation at 400°C for 1 hour in air atmosphere, and finally cool naturally to room temperature in air cooling, and then obtain Wrinkled nano-Co with wrinkled paper-like microstructure 3 o 4 powder material.

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Abstract

The invention discloses a preparation method of a wrinkly nano-rGO composite material. The preparation method of the wrinkly nano-rGO composite material comprises the following steps: (1) adding a metal salt to a GO dispersion, and performing uniform mixing to prepare a mixed solution; (2) performing ultrasonic spray pyrolysis on the mixed solution, and collecting prepared black powder to obtain the wrinkly nanometer metal oxide / rGO composite material. A preparation method of the wrinkly nanometer metal oxide is characterized in that the wrinkly nanometer metal oxide / rGO composite material iscalcined in a protective gas atmosphere to obtain the wrinkly nanometer metal oxide with a wrinkly spitball-shaped microstructure. The nanometer metal oxide / rGO composite material is prepared in a one-step manner through combining a spray pyrolysis process with a template process with GO and a metal salt as a precursor, and is calcined to prepare the wrinkly nanometer metal oxide. The preparationmethods have the advantages of simple process, short cycle, easily available raw materials and low cost, and the prepared metal oxide powder has a large surface area and rich pore structures.

Description

technical field [0001] The invention relates to a preparation method of a wrinkled nanometer metal oxide / rGO composite material and a preparation method of a wrinkled nanometer metal oxide, belonging to the technical field of metal oxide nanomaterial preparation. Background technique [0002] Spray pyrolysis is a method for preparing particles or films by forming droplets from precursor solutions, which are then evaporated and decomposed in a reactor, and is a very efficient method for the preparation of multifunctional particles. The process of spray pyrolysis can be described as follows: the combination of solutes such as inorganic compounds, metal-organic compounds, organometallic compounds, colloids, etc. is dissolved in the solvent, atomized into droplets, and then transported to the reactor by carrier gas, and then dried, decomposed and crystallize to form solid particles or films. During particle formation, the liquid droplets entering the reactor are dried and react...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/755B01J23/14B01J23/34B01J35/10C01G19/02C01G45/02C01G51/04C01G53/04
CPCC01G19/02C01G45/02C01G51/04C01G53/04B01J23/14B01J23/34B01J23/75B01J23/755C01P2002/85C01P2004/03B01J35/61
Inventor 唐志红高小林杨俊和
Owner UNIV OF SHANGHAI FOR SCI & TECH
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