Nano porous starch-based material with high oil absorption rate and preparation method and application thereof

A nanoporous, high oil absorption technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., to achieve stable structure, high oil absorption effect, and good oil absorption effect.

Active Publication Date: 2020-02-04
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in porous starch, combined with the existing problems in the treatment of oil pollution in water at the present stage, the present invention provides a porous starch-based material with high oil absorption rate, which uses silver nitrate, hydrazine hydrate, stearyl mercaptan, and isopropanol to treat Modification and structural reinforcement of porous starch to obtain stable nanoporous starch with high oil absorption rate

Method used

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  • Nano porous starch-based material with high oil absorption rate and preparation method and application thereof
  • Nano porous starch-based material with high oil absorption rate and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0039] A preparation method of nanoporous starch-based material with high oil absorption rate, comprising the following steps:

[0040] 1. Gelatinization treatment of starch: Take 100 g of starch and dissolve it in 10 L of distilled water, gradually raise the temperature to 95°C at a rate of 8°C / min and keep for 2 minutes, then cool to room temperature for later use;

[0041] 2. Add 2 g of calcium carbonate nanoparticles to step 1 and continue to stir for 20 min. Continue to stir overnight at 4°C. Centrifuge at 2500 r / min for 5 min. After washing with water three times, disperse in ethylenediaminetetraacetic acid (0.2 M pH=7.4, EDTA), stirred for 30 min, centrifuged and washed three times with ultrapure water. Repeatedly disperse EDTA, stir, centrifuge and wash;

[0042] Operation points and precautions: Calcium carbonate nanoparticles are dissolved in 10% ethanol water and ultrasonically mixed. When dissolving, ethanol can be added first to dissolve most of the nano-calcium ...

Embodiment 2

[0051] A preparation method of nanoporous starch-based material with high oil absorption rate, comprising the following steps:

[0052] 1. Gelatinization treatment of starch: Take 100 g of starch and dissolve it in 10 L of distilled water, gradually raise the temperature to 95 °C at a rate of 14 °C / min and keep for 4 min, then cool to room temperature for later use;

[0053]2. Add 4 g of calcium carbonate nanoparticles to step 1 and continue to stir for 20 min. Continue to stir overnight at 4°C. Centrifuge at 2500 r / min for 5-10 min. After washing with water three times, disperse in ethylenediamine Tetraacetic acid (0.2M pH=7.4, EDTA), stirred for 30-35 min, and centrifuged and washed three times with ultrapure water. Repeatedly disperse EDTA, stir, centrifuge and wash;

[0054] Operation points and precautions: Calcium carbonate nanoparticles are dissolved in 10% ethanol water and mixed ultrasonically. When dissolving, ethanol can be added first to dissolve most of the nano-...

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Abstract

The invention discloses a preparation method of a nano porous starch-based material with high oil absorption rate, and can effectively solve the problem of oil pollution in water. Starch serves as a raw material, the starch is gelatinized and cooled, nano calcium carbonate serves as a sacrificial template, a three-dimensional nano porous starch nano material is prepared through a sacrificial template method, then, a mixture of 1% silver nitrate, hydrazine hydrate, isopropanol and octadecanethiol is added, and finally the nano porous starch with high oil absorption rate is obtained. The oil absorption rate of the prepared nano porous starch with high oil absorption rate is obviously increased, the preparation process is simple and feasible, and the prospect is wide.

Description

technical field [0001] The invention relates to a nanoporous starch-based material with a high oil absorption rate and a preparation method thereof, as well as its application in treating oil pollution in water, and belongs to the field of porous adsorption materials. Background technique [0002] With the rapid development of the global economy, the development and utilization of petroleum resources, the oil pollution of water bodies is becoming more and more serious. The search for cheap, efficient and environmentally friendly degreasing methods has attracted people's attention. Currently, the commonly used degreasing methods include physical methods, chemical methods and Among the biological methods, the physical method is the most economical and environmentally friendly. Commonly used physical methods include oil boom method, oil skimmer, and adsorption method. Compared with other methods, adsorption method is more efficient, has high oil removal efficiency, and has a wi...

Claims

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Application Information

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IPC IPC(8): C08J9/36C08J9/26B01J20/24B01J20/28B01J20/30C02F1/28C02F1/40C08L3/02
CPCC08J9/36C08J9/26B01J20/24B01J20/28011C02F1/286C02F1/40C08J2303/02
Inventor 方奕珊崔波陶春静岳丹华沈静敏王媛媛
Owner QILU UNIV OF TECH
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