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Metal-oxide two-dimensional material and preparing method and application thereof

A technology of two-dimensional materials and oxides, which is applied in the direction of oxide/hydroxide preparation, chemical instruments and methods, titanium oxide/hydroxide, etc., and can solve the problems that limit the development and application of metal oxide two-dimensional materials. , to achieve the effect of easy implementation and simple method

Active Publication Date: 2017-01-11
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This limits the development of metal oxide 2D materials and their related applications.

Method used

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  • Metal-oxide two-dimensional material and preparing method and application thereof
  • Metal-oxide two-dimensional material and preparing method and application thereof
  • Metal-oxide two-dimensional material and preparing method and application thereof

Examples

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Effect test

Embodiment 1

[0036] Preparation of two-dimensional materials of alkaline earth metal oxide CaO:

[0037] (1) 1 gram of CaCl 2 Dissolve in 20 milliliters of deionized water to obtain a solution containing Ca ions, then add 20 milliliters of a dispersed graphene oxide solution to the solution, the concentration of the graphene oxide solution is 2 mg / ml, and adsorb at room temperature while stirring for 0.5 Hour, obtain mixed solution;

[0038] (2) Centrifuge the mixed solution with a centrifuge to obtain graphene oxide that adsorbs Ca ions, and redisperse these graphene oxides in pure water by shaking, stirring and ultrasonic methods, and then use these graphene oxide-containing water with liquid nitrogen Quickly freeze into ice cubes, the freezing time is 5 seconds;

[0039] (3) Put the ice cubes obtained in step (2) into a freeze dryer to remove the moisture in the ice cubes. The temperature of the freeze dryer is -50°C, the air pressure is 25 Pascals, and the freeze-drying time is 3 day...

Embodiment 2

[0042] Contains alkali metal component oxide NaCo 2 o 4 Preparation of 2D materials:

[0043] (1) 0.2 g of CoCl 2, 0.1 gram of NaCl was dissolved in 10 milliliters of deionized water to obtain a solution containing Na and Co ions, and then 20 milliliters of a dispersed graphene oxide solution was added to the solution, and the concentration of the graphene oxide solution was 2 mg / ml. Under adsorption, while stirring for 0.5 hours, a mixed solution was obtained;

[0044] (2) The mixed solution is centrifuged with a centrifuge to obtain the adsorption of Na, the graphene oxide of Co ions, and redisperse these graphene oxides in pure water by means of shaking, stirring and ultrasound, and then use these graphene oxide-containing water with Liquid nitrogen is quickly frozen into ice cubes, and the freezing time is 5 seconds;

[0045] (3) Put the ice cubes obtained in step (2) into a freeze dryer to remove the moisture in the ice cubes. The temperature of the freeze dryer is -5...

Embodiment 3

[0048] Multi-metal component oxide Fe-doped TiO 2 Preparation of 2D materials:

[0049] (1) 0.1 gram of tetrabutyl titanate, 0.01 gram of FeCl 3 Dissolve in 10 milliliters of 2M nitric acid to obtain a solution containing Ti and Fe ions, then add 20 milliliters of a dispersed graphene oxide solution to the solution, the concentration of the graphene oxide solution is 2 mg / ml, adsorb at room temperature, and simultaneously Stir for 0.5 hour to obtain a mixed solution;

[0050] (2) The mixed solution is centrifuged with a centrifuge to obtain adsorption Ti, the graphene oxide of Fe ions, and redisperse these graphene oxides in pure water by means of vibration, stirring and ultrasound, and then use these graphene oxide-containing water with Liquid nitrogen is quickly frozen into ice cubes, and the freezing time is 5 seconds;

[0051] (3) Put the ice cubes obtained in step (2) into a freeze dryer to remove the moisture in the ice cubes. The temperature of the freeze dryer is -5...

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Abstract

The invention discloses a metal-oxide two-dimensional material and a preparing method and application thereof. The preparing method includes the steps that sheet-shaped graphene oxide serves as a template and is used for adsorbing metal ions in a solution, dispersed graphene oxide solid adsorbing the metal ions is obtained with the re-dispersion and ultrafast freezing method, and is subjected to a following annealing treatment, and the metal-oxide two-dimensional material is obtained. The metal-oxide two-dimensional material prepared with the method can be applied to numerous fields such as bio-diesel preparation, gas catalyzing, gas sensing and lithium ion batteries. Metal oxide comprising alkali metal and alkaline-earth metal components and the multi-metal-component oxide two-dimensional material can be obtained with the preparing method; the method is simple, practicable, easy to carry out and friendly in environment.

Description

technical field [0001] The invention relates to a metal oxide two-dimensional material and its preparation method and application. The material can be applied to various fields of biodiesel preparation, electrocatalysis, photocatalysis, gas catalysis, gas sensitivity and lithium battery. Background technique [0002] In recent years, two-dimensional materials represented by graphene are only a dozen or even a few atoms thicker than traditional bulk materials, making them have a large specific surface area, special electronic structure, and flexibility. , Machinability and other advantages. While metal oxides (such as TiO 2 , ZnO, etc.) As a large class of important functional materials, metal oxide two-dimensional materials have great application potential in catalysis, energy storage, electronics and other fields. At present, the main preparation method of metal oxide two-dimensional materials is the exfoliation method. With alkali metal ions (Li + , Na + ,K + ), alka...

Claims

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Application Information

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IPC IPC(8): C01B13/14C01F11/02C01G51/00C01G23/08C01G23/047H01M10/0525
CPCC01B13/14C01F11/02C01G23/047C01G23/08C01G51/00C01P2002/80C01P2004/03C01P2004/04H01M10/0525Y02E60/10
Inventor 李亚光
Owner HEBEI UNIVERSITY
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