Preparation method of GO@PDA@MIL-101 nano composite material

Abstract

The invention provides a preparation method of a GO@PDA@MIL-101 nano composite material. The method includes the steps of: 1. preparing GO@PDA; 2. taking para toluic acid, A GOPDAMIL 101 nano composite material preparation method comprises the following steps: 1, preparation of GOPDA, 2, take on the quality of benzoic acid, chromium nitrate nonahydrate and GO@PDA in a mass ratio of 41:100:10, and taking deionized water and 40% hydrofluoric acid in a mass ratio of 96:1 for standby use; 3. firstly dissolving para toluic acid and chromium nitrate nonahydrate in a reaction kettle holding deionized water, then dissolving the GO@PDA prepared in step 1 in the mixed solution, conducting ultrasonic treatment for 15min, and performing magnetic stirring for 20min; 4. adding hydrofluoric acid into the mixed solution, and carrying out reaction under 493k for 8h; and 5. cooling the reaction product to room temperature, then conducting washing with N, N-dimethylformamide, ethanol and distilled water in order, and then performing drying, thus obtaining the GO@PDA@MIL-101 nano composite material. The method provided by the invention has the advantages of simple operation and low cost, the prepared GO@PDA@MIL-101 nano composite material has a nano-scale particle size, uniform particles, good dispersion, and strong adsorption capacity. The preparation process does not cause environmental pollution and is harmless to the health of operators.

Description

technical field

[0001] The invention relates to a preparation method of a metal organic framework composite material, in particular to a preparation method of a graphene oxide-metal organic framework nanocomposite material (GO@PDA@MIL-101) modified with dopamine hydrochloride. Background technique

[0002] There are many methods for the synthesis of metal-organic framework materials, and the common methods include hydrothermal method, diffusion method, microwave-assisted method, room temperature stirring method, ultrasonic-assisted method and so on.

[0003] (1) Hydrothermal method

[0004] The hydrothermal method (also known as the hydrothermal method) refers to a method in which water is used as a solvent to react the reactants through high temperature and high pressure under airtight conditions to cultivate crystals. So far, the reaction method of the hydrothermal method is not limited to using water as a solvent, and may be part or all of an organic solvent during the r...