Mesoporous carbon material loading zero-valent iron, preparation method and application thereof

A mesoporous carbon and zero-valent iron technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problem that the preparation method has not yet been reported, and achieve the chemical structure and performance of the product. Stable, high load rate, small aperture effect

Inactive Publication Date: 2018-09-04
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, the preparation of mesoporous carbon materials loaded with zero-valent iron has not been reported

Method used

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  • Mesoporous carbon material loading zero-valent iron, preparation method and application thereof
  • Mesoporous carbon material loading zero-valent iron, preparation method and application thereof
  • Mesoporous carbon material loading zero-valent iron, preparation method and application thereof

Examples

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Embodiment 1

[0030] The embodiment of the present invention provides a method for preparing a mesoporous carbon material loaded with zero-valent iron, such as figure 1 As shown, the specific steps are as follows:

[0031] S1. Weigh 15g of starch and dissolve it in 50mL of deionized water, sonicate for 30min, then heat and stir the starch aqueous solution in a water bath at 80°C for 20min, and then 20g of colloidal dioxide containing 50wt% silica at a rate of 0.1mL / s Silicon was added, then heated and stirred in an oil bath at 120°C for 20min, allowed to stand and cooled, then dried, carbonized at 500°C for 3h, cooled naturally, washed with 100mL NaOH solution with a concentration of 30wt% in a water bath at 70°C, and then used Wash with deionized water until the pH value is 7. Since ethanol is volatile and more conducive to rapid drying, it is finally washed with ethanol three times and dried at 60°C for 24 hours to obtain a mesoporous carbon material;

[0032] S2. Weigh 0.6g ferric chlor...

Embodiment 2

[0035] The embodiment of the present invention provides a method for preparing a mesoporous carbon material loaded with zero-valent iron, and the specific steps are as follows:

[0036] S1. Weigh 15g of starch and dissolve it in 50mL of deionized water, sonicate for 30min, then heat and stir the starch aqueous solution in a water bath at 80°C for 20min, and then 20g of colloidal dioxide containing 50wt% silica at a rate of 0.1mL / s Silicon was added, then heated and stirred in an oil bath at 120°C for 20 minutes, allowed to stand and cooled, then dried, and carbonized at 300°C, 500°C and 700°C for 3 hours, and cooled naturally with 100mL of 30wt% NaOH solution at 70 Wash in a water bath at ℃, and then wash with deionized water until the pH value is 7. Since ethanol is volatile and more conducive to rapid drying, it is finally washed with ethanol three times and dried at 60°C for 24 hours to obtain a mesoporous carbon material;

[0037]S2. Weigh 0.6g ferric chloride hexahydrate ...

Embodiment 3

[0043] The embodiment of the present invention provides a method for preparing a mesoporous carbon material loaded with zero-valent iron, and the specific steps are as follows:

[0044] S1. Weigh 15g of starch and dissolve it in 50mL of deionized water, sonicate for 30min, then heat and stir the starch aqueous solution in a water bath at 80°C for 20min, and then 20g of colloidal dioxide containing 50wt% silica at a rate of 0.1mL / s Silicon was added, then heated and stirred in an oil bath at 120°C for 20 minutes, allowed to stand and cooled, then dried, and carbonized at 300°C, 400°C, 500°C, and 600°C for 3 hours, and cooled naturally with 100mL of 30wt% NaOH solution was washed in a water bath at 70°C, and then washed with deionized water until the pH value was 7. Since ethanol is volatile and more conducive to rapid drying, it was finally washed with ethanol three times and dried at 60°C for 24 hours to obtain mesoporous carbon materials;

[0045] S2. Under nitrogen atmosphe...

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Abstract

The invention discloses a mesoporous carbon material loading zero-valent iron, a preparation method and application thereof. The preparation method comprises the following steps: drying and carbonizing a starch water solution containing colloidal silicon dioxide, so as to obtain a mesoporous carbon material, adding a solution containing ferric iron into the mesoporous carbon material in non-oxidizing atmosphere, and performing reduction with sodium borohydride, so as to obtain the mesoporous carbon material loading zero-valent iron; the specific surface area, mean pore size and pore volume ofthe mesoporous carbon material are 100 to 400m2 / g, 5 to 10nm and 0.5 to 1.0cm3 / g separately; the adsorption removal rate hexavalent chromium ion in a water body can reaches greater than 99 percent. The method can realize the controllable synthesis of different specifications of mesoporous carbon materials loading zero-valent iron by adjusting technical parameters; the mesoporous carbon material ishigh in metallic iron load rate, and high in stability, adsorption efficiency and adsorption capacity; the preparation condition is mild, the technology is simple and controllable, and the efficiencyis high, the method is suitable for scale production and wide in application.

Description

technical field [0001] The invention relates to the technical field of adsorption materials for heavy metal treatment, in particular to a mesoporous carbon material loaded with zero-valent iron and its preparation method and application. Background technique [0002] In recent years, with the increasing mining, smelting, processing and commercial manufacturing activities of heavy metals, the pollution of heavy metals has become quite serious, which is extremely harmful to the environment and organisms. At the same time, heavy metals cannot be biodegraded and are easily enriched through the food chain collection, endangering human health. Therefore, seeking suitable methods to deal with heavy metal water pollution has attracted widespread attention. At present, commonly used methods for removing heavy metals in water include chemical precipitation, ion exchange, redox, membrane treatment, biological methods, adsorption, etc. Among them, adsorption is the most widely used met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/22
Inventor 杨志辉易皓岚刘维柴立元杨卫春王海鹰
Owner CENT SOUTH UNIV
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