A conductive metal organic framework nanorod array composite material and its preparation and application

Abstract

The invention belongs to the technical field of nanometer materials, and in particular relates to a conductive metal organic framework nanorod array composite material and its preparation and application. The preparation method of the present invention comprises the following steps: (s1) self-assembling the hydroxide nanorod array and the conductive organic ligand through hydrothermal reaction to obtain the core-shell structure nanorod array; (s2) in situ forming the core-shell structure nanorod array By electrochemical reduction, the conductive metal organic framework nanorod array composite material can be obtained. The present invention synthesizes the conductive metal organic framework nanorod array composite material through etching, epitaxial growth and in-situ electric reduction, and completes the directional growth of the conductive metal organic framework, the generation of metal oxides and the effective compounding with the metal organic framework. The in situ electrochemical reduction method completes the recombination of conductive metal organic frameworks and metal oxides, which has broad application prospects as a detection and sensing platform.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a conductive metal organic framework nanorod array composite material and its preparation and application. Background technique [0002] Metal-organic frameworks (MOFs) are crystalline materials composed of metal ions and organic ligands with large surface area, customizable composition, and porous structure, resulting in high surface chemical activity, large chemisorption capacity, and high Surface-to-volume ratio, showing great potential in molecular recognition, energy, gas separation, etc. Especially as catalysts, MOFs have certain selectivity and good catalytic activity. However, the vast majority of MOFs have poor electrical conductivity, which severely limits their applications in electrochemical sensing. Therefore, a very desirable strategy is to develop conductive metal-organic framework composite metal oxide materials to improve the conductivit...

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Problems solved by technology

[0007] In view of the above defects of the prior art, the present invention provides a method for preparing a conductive metal organic framework nanorod array composite material, which synthesizes a conductive metal organic framework nanorod array composite material by etching, epitaxial growth and in-situ electrical reduction methods, The composite of conductive metal organic frameworks and metal oxides was completed by in-situ electrochemical reduction method, thus solving the problems of poor electrical conductivity of metal organic framework materials, difficulty in compounding with metal oxides, and unsatisfactory electrocatalytic performance.

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