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Resin based mesoporous nano composite material, preparation method and applications thereof

A nanocomposite material and composite material technology are applied in the fields of nanocomposite material synthesis technology and water treatment application, which can solve problems such as difficult preparation, and achieve the effects of easy regulation, easy regulation of content and strong hydrophilicity

Active Publication Date: 2016-12-07
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes a new type of porous organic compound that combines two different components: one makes up part of itself by forming tiny holes called “pores” on its own face when heat treated at high temperatures. Another component forms small cavities inside these tiny spaces where other molecules are trapped during cooling after being cooled down. These special structures allow for better transport properties compared with traditional methods like liquid filtrations. Overall this innovative process allows for precise tunings over various parameters such as particle size, shape, density, etc., resulting in improved composites' capabilities in treatments involving liquids.

Problems solved by technology

Technological Problem: Current methods for producing metal/carbon composites involve complex processes involving multiple steps like dissolution, coagulation, precipitation, filtrate transferring, etc., making them challenging to control particle sizes within narrow ranges without causing plugging issues due to aggregates formed from small particles. Additionally, current techniques often result in poor performance at low concentrations of nanophiles because they require large amounts of surfactant to stabilize the nanocatalysts beforehand.

Method used

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  • Resin based mesoporous nano composite material, preparation method and applications thereof
  • Resin based mesoporous nano composite material, preparation method and applications thereof
  • Resin based mesoporous nano composite material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation steps of resin-based mesoporous nanocomposites are as follows (such as figure 1 shown):

[0042] (1) Take 30g of polystyrene (PS) with a molecular weight of 190,000, mix it with 10g of chloromethyl polystyrene (CMPS), dissolve it in 200mL of N,N-dimethylformamide (DMF), add 6g of The diameter is the nano iron oxide particle (self-made) of 5nm, stirs and makes it fully dissolve to make mixed solution;

[0043] (2) Add 1000mL of methanol in batches to the liquid nitrogen to make it completely solidified, and then add the mixed solution drop by drop into the liquid nitrogen; leave it for 16 hours to make the liquid nitrogen volatilize completely and the methanol completely melt, take out the solid form in the container Resin pellets, washed with ethanol several times and then dried at 50°C to obtain solid pellets;

[0044] (3) Add solid pellets into 1,6-hexamethylenediamine ethanol solution with a mass concentration of 10%, treat at 50°C for 24 hours, wash ...

Embodiment 2

[0047] The preparation steps of the resin-based mesoporous nanocomposite are similar to those in Example 1, but the 5 nm iron oxide particles (self-made) in Example 1 are replaced by 10 nm iron oxide particles (self-made).

[0048] The resin-based mesoporous nanocomposite material obtained in this example is spherical, reddish brown, with a diameter of about 1.7 mm, and most of the absorption peaks in the infrared spectrum are the same as those of polystyrene (PS); but at 1635 and 1223 cm -1 with 820cm -1 There are new peaks appearing at , corresponding to -N-H bending vibration, C-N stretching vibration and characteristic absorption peaks of Fe-O, indicating that the resin-based skeleton of the composite material is aminated polystyrene, and the composite material contains nano-iron oxide. by N 2 -Adsorption-desorption instrument measures the pore structure, showing that its specific surface area is 200m 2 / g, the pore diameter is about 21nm, and the pore distribution of th...

Embodiment 3

[0050] The preparation steps of the resin-based mesoporous nanocomposite are similar to those in Example 1, but the 5nm iron oxide particles (self-made) in Example 1 are replaced by 30nm nanometer iron oxide particles (self-made).

[0051] The resin-based mesoporous nanocomposite material obtained in this example is spherical, reddish brown, with a diameter of about 2.7 mm, and most of the absorption peaks in the infrared spectrum are the same as those of polystyrene (PS); but at 1643 and 1230 cm -1 with 828cm -1 There are new peaks appearing at , corresponding to -N-H bending vibration, C-N stretching vibration and characteristic absorption peaks of Fe-O, indicating that the resin-based skeleton of the composite material is aminated polystyrene, and the composite material contains nano-iron oxide. by N 2 -Adsorption-desorption instrument measures the pore structure, showing that its specific surface area is 50m 2 / g, the pore diameter is about 11nm, and the pore distributio...

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Abstract

The invention discloses a resin based mesoporous nano composite material, a preparation method and applications thereof, and belongs to the fields of nano composite material synthesis and water treatment. The resin based mesoporous nano composite material is prepared by the following steps: mixing linear high molecular polymers with a certain amount of chloromethyl polystyrene or polyvinyl chloride, dissolving, mixing nano particles into the mixture, and carrying out pre-mixing, cold crystallization hole forming, and crosslinking amination. The nano composite material is in a ball shape, the aperture is 5 to 40 nm; the specific surface area is 50 to 300 m2/g, the negative ion exchange capacity is 0.5 to 3.0 mmol/g, and the mass percentage of nano particles is 1 to 30%. The provided composite material has the characteristics that the hole structure is abundant, the structure is stable, and the synthesis process is easy to control. Moreover, solved are problems that the holes are easily obstructed during the preparation process of the nano composite material, the hole structure is out of order, and the nano particle content is difficult to adjust. The composite material can be effectively applied to engineering application.

Description

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Claims

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Application Information

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Owner NANJING UNIV
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