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Boron-phosphorus co-doped activated carbon for adsorbing aromatic-ring-containing compounds in water and preparation method of boron-phosphorus co-doped activated carbon

A co-doping, activated carbon technology, applied in chemical instruments and methods, water pollutants, adsorbed water/sewage treatment, etc., can solve the problems of reduced aromatic ring charge density, adverse effects of aromatic ring-containing compounds adsorption, weakened EDA effect, etc.

Active Publication Date: 2021-01-26
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of the charge density of aromatic rings caused by boron doping will weaken the EDA effect and adversely affect the adsorption of aromatic ring compounds

Method used

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  • Boron-phosphorus co-doped activated carbon for adsorbing aromatic-ring-containing compounds in water and preparation method of boron-phosphorus co-doped activated carbon
  • Boron-phosphorus co-doped activated carbon for adsorbing aromatic-ring-containing compounds in water and preparation method of boron-phosphorus co-doped activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of boron and phosphorus co-doped activated carbon, comprising the following steps:

[0039] (1) Using boric acid, phytic acid, glucose and water as raw materials, mix them in a mass ratio of 30:30:20:20;

[0040] (2) hydrothermally reacting the product obtained in step (1) at 150°C for 3h, and drying at 100°C for 18h;

[0041] (3) The product obtained in step (2) was calcined in a high-temperature furnace at 950° C. for 2 h under a helium atmosphere, then washed with water until the pH value of the clear liquid was 7, and then dried at 100° C. for 24 h to obtain boron-phosphorus co-doped activated carbon.

[0042] The boron-phosphorous co-doped activated carbon obtained by the above method has a boron doping amount of 10wt.%, a phosphorus doping amount of 8.4wt.%, and a specific surface area of ​​2500m 2 / g.

[0043] Application of a boron and phosphorus co-doped activated carbon in the adsorption of aromatic ring compounds in water:

[0044]Weig...

Embodiment 2

[0046] A preparation method of boron and phosphorus co-doped activated carbon, comprising the following steps:

[0047] (1) Use boric acid, phytic acid, sucrose and water as raw materials, and mix them in a mass ratio of 6:30:16:48;

[0048] (2) hydrothermally reacting the product obtained in step (1) at 250° C. for 36 hours, and drying at 95° C. for 24 hours;

[0049] (3) The product obtained in step (2) was calcined in a high-temperature furnace at 800° C. for 4 h under a nitrogen atmosphere, then washed with water until the pH value of the clear liquid was 7, and then dried at 100° C. for 16 h to obtain boron-phosphorus co-doped activated carbon.

[0050] The boron-phosphorous co-doped activated carbon obtained by the above method has a boron doping amount of 1.6wt.%, a phosphorus doping amount of 10wt.%, and a specific surface area of ​​2100m 2 / g.

[0051] Application of a boron and phosphorus co-doped activated carbon in the adsorption of aromatic ring compounds in wat...

Embodiment 3

[0054] A preparation method of boron and phosphorus co-doped activated carbon, comprising the following steps:

[0055] (1) Use boric acid, phytic acid, fructose and water as raw materials, and mix them in a mass ratio of 5:5:16:74;

[0056] (2) hydrothermally reacting the product obtained in step (1) at 195°C for 18h, and drying at 90°C for 16h;

[0057] (3) The product obtained in step (2) was calcined in a high-temperature furnace at 650° C. for 1 h under a nitrogen atmosphere, then washed with water until the pH value of the clear liquid was 6, and then dried at 100° C. for 24 h to obtain boron and phosphorus co-doped activated carbon.

[0058] The boron-phosphorous co-doped activated carbon obtained by the above method has a boron doping amount of 3.9wt.%, a phosphorus doping amount of 3.4wt.%, and a specific surface area of ​​850m 2 / g.

[0059] Application of a boron and phosphorus co-doped activated carbon in the adsorption of aromatic ring compounds in water:

[00...

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Abstract

The invention provides boron-phosphorus co-doped activated carbon for adsorbing aromatic-ring-containing compounds in water and a preparation method of the boron-phosphorus co-doped activated carbon,and belongs to the technical field of treatment of organic pollutants in water. The preparation method comprises the steps of uniformly mixing boric acid, phytic acid, a carbohydrate and water, and sequentially carrying out hydrothermal reaction, drying, calcining, water washing and drying on the obtained product to obtain the boron-phosphorus co-doped activated carbon. According to the preparation method, boric acid and phytic acid are used as pore forming agents together, so that the preparation cost can be reduced, and the advantage of in-situ pore forming is maintained. Boron doping and phosphorus doping are introduced into the boron-phosphorus co-doped activated carbon at the same time, and the electron donating capacity of phosphorus counteracts the reduction of aromatic ring chargedensity caused by boron doping, so that the intensity of the EDA effect is maintained, and the adsorption performance of the activated carbon on aromatic ring-containing compounds in the adsorption application of the aromatic ring-containing compounds in water is improved.

Description

technical field [0001] The invention relates to the technical field of organic pollutant treatment in water, in particular to a boron-phosphorous co-doped activated carbon used for adsorption of aromatic ring compounds in water and a preparation method thereof. Background technique [0002] Organic matter in water, including pharmaceuticals and personal care products, endocrine disruptors, dyes, natural organic matter, etc., are common pollutants in the water environment. The treatment methods of pollutants in water include adsorption method, oxidation method, coagulation method, hydrolysis method, membrane method and so on. Among them, the adsorption method has the characteristics of low cost, simple operation, and no toxic by-products, and has been widely used. [0003] Adsorption methods use a wide variety of adsorbents, including activated carbon, carbon nanotubes, graphene, molecular sieves, metal organic frameworks, and resins. Considering the cost factor, activated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/34C02F101/36C02F101/38C02F103/30C02F103/34C02F101/32
CPCB01J20/20C02F1/283C02F2101/38C02F2101/40C02F2101/34C02F2101/36C02F2103/343C02F2103/30C02F2101/32
Inventor 师亚威丁光辉宋国彬李安祺王浩男
Owner DALIAN MARITIME UNIVERSITY
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