Method for preparing metal, metallic oxide or metallic hydroxide and carbon nano tube composite

Abstract

The invention discloses a method for preparing metal, metallic oxide or metallic hydroxide and carbon nano tube composite. In the method, a carbon tube is ultrasonic-dispersed in solvent, a metal precursor is ultrasonic-dispersed in the solvent, and the dispersion solution are mixed uniformly and ultrasonically; under the ultrasonic action, the solution can react with reducing agent or aqueous alkali or ethanol and water, so as to obtain the metal, the metallic oxide or the metallic hydroxide and the carbon nano tube composite respectively. In the invention, by utilizing the reduction, oxidization and hydrolysis reactions of the metal precursor in the carbon tube dispersion solution under the ultrasonic action, the generated metal, metallic oxide or metallic hydroxide are directly loaded on the surface of the carbon tube, so as to prepare the metal, the metallic oxide or the metallic hydroxide and the carbon nano tube composite. The method has simple operation, short reaction time and easy realization; the reaction condition is mild without high-temperature high-pressure equipment; pre-modification treatment for the carbon tube is avoided, so as not to damage the electronic structure of the carbon tube; in addition, the higher load concentration can be achieved.

Description

technical field [0001] The invention relates to a method for preparing metal, metal oxide, metal hydroxide / carbon nanotube composite material. Background technique [0002] Carbon nanotubes (CNTs) have been widely used in the construction of new organic and inorganic functional nanocomposites due to their perfect structure and excellent physical properties since their discovery in 1991. The prepared compound can be used in photoelectric devices, sensors, high-strength materials and catalysts, etc. [0003] The synthesis method of carbon nanotube composite mainly contains following three kinds: (1) covalent modification method, this method often first needs to carry out strong acid treatment to carbon tube surface, introduces carboxyl or hydroxyl functional group, then further makes modification bond. catch. However, covalent modification will inevitably cause damage to the electronic structure of carbon tubes, and at the same time increase the synthesis cost and complexity...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that the adsorbed molecules will hinder the application of the complex in some fields such as catalytic applications, etc.

(3) Supercritical fluid chemical deposition method, but higher reaction temperature and operating pressure limit the wide application of this method

In short, the above three methods generally have defects such as poor loading effect, serious particle aggregation, large particle size (>3nm), and low loading capacity.

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