Preparation method and application of a lanthanum-doped mesoporous carbon film

A mesoporous carbon, lanthanum-doped technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve harmful algal toxins, aquatic species death, aquatic plants and algae overgrowth and other issues, to achieve the effect of low cost, high separation efficiency, and reusability

Active Publication Date: 2021-04-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, excess phosphate in water bodies can cause excessive growth of aquatic plants and algae, causing a series of environmental problems, such as algal blooms due to eutrophication, aquatic species death, and harmful algae formation due to reduced dissolved oxygen toxin

Method used

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  • Preparation method and application of a lanthanum-doped mesoporous carbon film
  • Preparation method and application of a lanthanum-doped mesoporous carbon film
  • Preparation method and application of a lanthanum-doped mesoporous carbon film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Take 10g of commercially available cotton and place it in 150mL of sulfuric acid solution with a mass fraction of 40%, then stir and react at 45°C for 2h, then transfer it to a beaker, dilute to 1000mL with distilled water, then let it stand overnight for stratification, pour Remove the supernatant, centrifuge the suspension, wash with distilled water three times to remove the amorphous, transfer the suspension to a dialysis membrane and dialyze for 2 to 4 days until the pH is about 2.4, then sonicate for 10 minutes, dilute to obtain nanocellulose crystals (NCC) for use;

[0042] (2) Pipette 10 mL of the NCC obtained in step (1), sonicate for 30 min until it becomes transparent, place it in a round bottom flask, add 500 μL of tetramethoxysilane (TMOS), then add 20 mg of nitric acid hexahydrate, at 25 °C Stir and react for 2 hours, pour into a watch glass and dry in a water bath at 25°C for 1 to 2 days;

[0043] (3) Put the composite film synthesized in step (2) in ...

Embodiment 2

[0057] (1) Take 10g of commercially available cotton and place it in 150mL of sulfuric acid solution with a mass fraction of 50%, then stir and react at 45°C for 3h, then transfer it to a beaker, dilute to 1000mL with distilled water, then let it stand overnight and pour Remove the supernatant, centrifuge the suspension, wash with distilled water three times to remove the amorphous, transfer the suspension to a dialysis membrane and dialyze for 2 to 4 days until the pH is about 2.4, then sonicate for 10 minutes, dilute to obtain nanocellulose crystals (NCC) for use;

[0058] (2) Pipette 10 mL of NCC obtained in step (1), sonicate for 30 min until transparent, place in a round bottom flask, add 700 μL of tetramethoxysilane (TMOS), then add 15 mg of nitric acid hexahydrate, 25 ° C Stir and react for 2 hours, pour into a watch glass and dry in a water bath at 25°C for 1 to 2 days;

[0059] (3) Put the composite film synthesized in step (2) in a porcelain boat, and calcined at 10...

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Abstract

The invention belongs to the technical field of material preparation and separation, and discloses a preparation method and application of a lanthanum-doped mesoporous carbon film. The invention uses biomass nanocrystalline cellulose (NCCs) as a guiding template, tetramethoxysilane (TMOS) as a mesoporous template and lanthanum nitrate hexahydrate to synthesize a membrane material, and is used for selectively adsorbing phosphorus in a solution. The membrane material obtained in the present invention greatly improves the adsorption performance of the adsorbent, and at the same time, the membrane material is convenient for continuous operation and recovery, is superior to powder materials, and has great advantages in various adsorption materials.

Description

technical field [0001] The invention belongs to the technical field of material preparation and separation, and relates to a preparation method and application of a lanthanum-doped mesoporous carbon film. Background technique [0002] Phosphorus (P), as a key element in living organisms, is an important component for maintaining the biological activity of each organism. Phosphorus exists in two main forms in biology: 1) Phospholipid, as the main component of cells, is an important functional carrier of metabolism. A study found that increasing phospholipid precursors can promote synaptogenesis to treat Alzheimer's disease. 2) Phosphates contribute to human development as fertilizers and household detergents. Therefore, phosphorus is inevitably released into rivers, lakes and marines. Unfortunately, excess phosphate in water bodies can cause excessive growth of aquatic plants and algae, causing a series of environmental problems, such as algal blooms due to eutrophication,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/20B01J20/30C02F1/28C02F101/10C02F101/12C02F101/14C02F101/16
CPCB01J20/20B01J20/28033B01J20/28083C02F1/28C02F1/283C02F2101/101C02F2101/105C02F2101/12C02F2101/14C02F2101/163
Inventor 汪云云陈厉景旋刘恩秀闫永胜
Owner JIANGSU UNIV
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