Preparation method of polyurethane sponge supported MOG material

Abstract

A preparation method of a polyurethane sponge supported MOG material belongs to the field of sponge material preparation, and comprises the following steps: soaking 10 parts by weight of polyurethane sponge in sufficient distilled water, cleaning for 5-30 minutes under an ultrasonic condition, taking out the polyurethane sponge, repeating the cleaning operation, and drying the cleaned polyurethane sponge at 30-45 DEG C to obtain a material A; dispersing 2 parts by weight of the MOG material in 200 parts by weight of distilled water under an ultrasonic condition, adding 1 part by weight of sodium alginate, and stirring for 3.5-6.5 hours to obtain a mixed solution, namely a solution B; adding the material A into the solution B, and repeatedly extruding by using a glass rod to obtain a material C; adding the material C into 200 parts by weight of a CaCl2 solution with the concentration of 0.5-1.5% W / V, and soaking for 6-24 hours to obtain a material D; the material D is repeatedly washed with deionized water and dried at the temperature of 30-45 DEG C, and a polyurethane sponge supported MOG material is obtained; the preparation process is simple and convenient, less chemicals are consumed, and the method is suitable for subsequent loading of various powdery materials.

Description

Technical Field

[0001] The invention belongs to the field of sponge material preparation, and particularly relates to a method for preparing a polyurethane sponge-loaded MOG material. Background Art

[0002] Metal-organic gel (MOG) is a type of material formed by the coordination of metal ions and ligands. Compared with metal-organic framework (MOF), it has the characteristics of hierarchical porous structure, rich active sites, and large specific surface area, and can be widely used in the fields of adsorption and catalysis. However, the prepared powdered MOG materials often agglomerate, precipitate, and are difficult to recover in adsorption and catalysis research, which affects their subsequent practical applications. In order to make up for the above shortcomings, many scholars have studied and prepared supported MOG materials. However, so far, the carriers of supported MOG materials have mostly selected carbon materials, natural or artificial macromolecular materials, etc. The preparation process is complicated, energy-consuming, and time-consuming, and some carrier materials involve strong acids and alkalis in the preparation process, which poses a threat to the personal safety of operators. Therefore, it is very necessary to study a preparation method for supported MOG materials with a simple process and wide adaptability.

[0003] Polyurethane sponge has rich pore structure, appropriate pore size and environmental friendliness, and can be used as a good carrier for powdered materials. However, the existing preparation methods of polyurethane sponge-loaded materials have the disadvantages of complex loading process, large consumption of chemicals and poor applicability, which limits the subsequent promotion and application. Therefore, it is necessary to propose a preparation method of polyurethane sponge-loaded MOG material with universal applicability. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing a polyurethane sponge-loaded MOG material which is simple, has low energy consumption and wide adaptability in view of the shortcomings of the existing method for preparing a polyurethane sponge-loaded MOG material. The prepared polyurethane sponge-loaded material has stable physical and chemical properties and a multivariate pore structure and can be used in subsequent pollutant removal.

[0005] A method for preparing a polyurethane sponge-loaded MOG material comprises the following steps: Step 1: soak 10 parts by weight of a polyurethane sponge in sufficient distilled water, clean it under ultrasonic conditions for 5-30 minutes, take out the polyurethane sponge, repeat the above cleaning process 3-5 times, and then dry the cleaned polyurethane sponge at 30-45 degrees to obtain material A; Step 2: Disperse 2 parts by weight of MOG material in distilled water under ultrasonic conditions to make the concentration of the MOG solution 10 g / L, then add 1 part by weight of sodium alginate and stir for 3.5-6.5 h to obtain a mixed solution, named solution B; Step 3: Add the material A obtained in step 1 to the solution B obtained in step 2, and squeeze repeatedly with a glass rod to promote full contact between the material A and the solution B to obtain material C; Step 4: Add sufficient amount of CaCl with a concentration of 0.5-1.5% W / V to material C 2 The solid material D was obtained by soaking in the solution for 6-24 hours and then separating the solid and the liquid; Step 5: The solid material D is repeatedly washed with deionized water for 3-5 times, and dried at 30-45 degrees to obtain a polyurethane sponge-loaded MOG material.

[0006] Beneficial effects of the present invention: The external conditions required by the present invention are simple and easy to achieve, the preparation process is simple, less chemicals are consumed, unnecessary external condition control operations are omitted, and the present invention can be widely applied to subsequent loading of various powdered materials.

[0007] The polyurethane sponge-loaded MOG material prepared by the present invention has the following advantages: 1. Multi-element pore structure; 2. Larger specific surface area. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is the BET diagram of the polyurethane sponge-supported MOG material of the present invention.

[0009] Figure 2 It is the pore size distribution diagram of the polyurethane sponge-loaded MOG material of the present invention. DETAILED DESCRIPTION

[0010] See also Figure 1 , Figure 2 An embodiment of the present invention. Example 1

[0011] A method for preparing a polyurethane sponge-loaded MOG material comprises the following steps: Step 1: Soak 1 g of polyurethane sponge in sufficient distilled water, clean it under ultrasonic conditions for 30 minutes, take out the polyurethane sponge, repeat the above cleaning process 3 times, and then dry the cleaned polyurethane sponge at 45 degrees to obtain material A; Step 2: 0.2 g of MOG material was dispersed in distilled water under ultrasonic conditions to make the concentration of the MOG solution 10 g / L, and then 0.1 g of sodium alginate was added and stirred for 6 h to obtain a mixed solution, which was named solution B; Step 3: Add material A obtained in step 1 to solution B obtained in step 2, and squeeze repeatedly with a glass rod to promote full contact between material A and solution B to obtain material C.

[0012] Step 4: Add sufficient amount of CaCl2 to obtain a concentration of 1.5% W / V to material C. 2 The solution was immersed for 12 h, and solid-liquid separation was performed to obtain solid material D; Step 5: The solid material D was repeatedly washed with deionized water for 5 times, and dried at 45 degrees to obtain a polyurethane sponge-loaded MOG material. Example 2

[0013] A method for preparing a polyurethane sponge-loaded MOG material comprises the following steps: Step 1: Soak 5 g of polyurethane sponge in sufficient distilled water, clean it under ultrasonic conditions for 20 minutes, take out the polyurethane sponge, repeat the above cleaning process 3 times, and then dry the cleaned polyurethane sponge at 35 degrees to obtain material A; Step 2: Disperse 1 g of MOG material in distilled water under ultrasonic conditions to make the concentration of the MOG solution 10 g / L, then add 0.5 g of sodium alginate and stir for 6 h to obtain a mixed solution, named solution B; Step 3: Add the material A obtained in step 1 to the solution B obtained in step 2, and squeeze repeatedly with a glass rod to promote full contact between the material A and the solution B to obtain material C; Step 4: Add sufficient amount of CaCl2 to obtain a concentration of 1.0% W / V to material C. 2 The solution was immersed for 18 h, and solid-liquid separation was performed to obtain solid material D; Step 5: The solid material D was repeatedly washed with deionized water for 4 times, and dried at 40 degrees to obtain a polyurethane sponge-loaded MOG material.

Claims

1. A method for preparing a polyurethane sponge-loaded MOG material, characterized in that: The steps include: Step 1: soak 10 parts by weight of a polyurethane sponge in sufficient distilled water, clean it under ultrasonic conditions for 5-30 minutes, take out the polyurethane sponge, repeat the above cleaning process 3-5 times, and then dry the cleaned polyurethane sponge at 30-45 degrees to obtain material A; Step 2: Disperse 2 parts by weight of MOG material in 200 parts by weight of distilled water under ultrasonic conditions, add 1 part by weight of sodium alginate, and stir for 3.5-6.5 hours to obtain a mixed solution, which is named solution B; Step 3: Add the material A obtained in step 1 to the solution B obtained in step 2, and squeeze repeatedly with a glass rod to promote full contact between the material A and the solution B to obtain material C; Step 4: Add 200 parts by weight of material C into a CaCl2 solution with a concentration of 0.5-1.5% W / V, and soak for 6-24 hours to obtain material D; Step 5: Wash material D repeatedly with deionized water for 3-5 times, and dry it at 30-45 degrees to obtain a polyurethane sponge-loaded MOG material.

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