Preparation method of GO@PDA@MIL-101 nano composite material
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A nano-composite material, a technology of dopamine hydrochloride, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as long time, achieve low cost, harmless health, and simple operation Effect
Inactive Publication Date: 2017-02-15
SHENYANG LIGONG UNIV
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This method is relatively mild, and it is easy to synthesize larger crystals, but it usually takes a long time, so it is limited in some aspects.
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Embodiment 1
[0026] A preparation method of GO@PDA@MIL-101 nanocomposite material, comprising the following steps:
[0027] Step 1: Preparation of GO@PDA:
[0028] First, 20 mg of dopamine hydrochloride was dissolved in 10 mL of Tris buffer solution. After dissolving, 10 mg of graphene oxide (GO) was added, ultrasonically dispersed at 20KZ for 10 min, and magnetic stirring was continued at room temperature for 24 hours after the dispersion was uniform. After stirring, wash thoroughly with deionized water, then dry, and finally collect the prepared GO@PDA for future use.
[0029] Step 2: Preparation of GO@PDA@MIL-101:
[0030] Dissolve 410 mg of terephthalic acid and 1 g of chromium nitrate nonahydrate in 12 mL of deionized water, dissolve the GO@PDA prepared in Step 1 in it, disperse it ultrasonically at 20 Kz for 15 min, stir at room temperature under a magnetic force of 200 r / min for 20 min, and pour into the mixture Add 0.125ml of hydrofluoric acid into the solution, stir until unifor...
Embodiment 2
[0032] A preparation method of graphene oxide-metal organic framework nanocomposite material, comprising the following steps:
[0033] Step 1: Preparation of GO@PDA:
[0034] First, 20 mg of dopamine hydrochloride was dissolved in 10 mL of Tris buffer solution. After fully dissolving, 10 mg of graphene oxide (GO) was added and placed in an ultrasonic wave for ultrasonic dispersion for 10 min. After the dispersion was uniform, magnetic stirring was continued at room temperature for 24 hours. After stirring, wash thoroughly with deionized water, then dry, and finally collect for future use.
[0035] Step 2: Preparation of GO@PDA@MIL-101:
[0036] Dissolve 410mg of terephthalic acid and 1g of chromium nitrate nonahydrate in 12mL of deionized water, dissolve 100mg of GO@PDA prepared in Step 1 in it, sonicate for 15min, stir for 20min at room temperature under a magnetic force of 200r / min, and add to the mixed solution Add 0.125ml of hydrofluoric acid, stir until uniform; place t...
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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...
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