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Mpg-C3N4 adsorbing material as well as preparation method and application thereof

A mesoporous carbon nitride, adsorption material technology, applied in chemical instruments and methods, nitrogen compounds, nitrogen and non-metallic compounds, etc., can solve problems such as poor adsorption effect of antibiotics, and achieve simple and easy operation in the adsorption process and material synthesis process. Simple, high adsorption capacity

Inactive Publication Date: 2017-11-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has poor adsorption effect on antibiotics due to its low surface area.

Method used

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  • Mpg-C3N4 adsorbing material as well as preparation method and application thereof
  • Mpg-C3N4 adsorbing material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of mesoporous carbon nitride adsorption material, comprising the following steps:

[0033] 1. Take 5mL cyanamide and place it in an alumina crucible, add 3mL silicon dioxide (SiO 2 ) sol, heated in a water bath at 50°C and stirred until completely mixed, and then dried in a vacuum oven at 50°C for 24 hours to obtain block solid A.

[0034] 2. Grind the obtained massive solid A and then transfer it to a muffle furnace to raise the temperature to 550°C at a rate of 3°C / min and keep the temperature for 3h to obtain a light yellow solid B.

[0035] 3. Put the obtained light yellow solid B3g into 50mL of 4mol / L ammonium bifluoride, stir for 72h to remove the silica template. Afterwards, carry out suction filtration and wash with ultrapure water and absolute ethanol, and then place it in a vacuum drying oven at 50°C for 24 hours. After cooling to room temperature, grind and sieve to obtain mpg-C 3 N 4 -1 adsorbent.

Embodiment 2

[0042] A kind of preparation of mesoporous carbon nitride adsorbent comprises the following steps:

[0043] 1. Weigh 5mL of cyanamide into an alumina crucible, add 6mL of silica sol to it, heat in a water bath at 50°C and stir until completely mixed, then dry in a vacuum oven at 50°C for 24h to obtain block solid A .

[0044]2. Grind the obtained massive solid A and then transfer it to a muffle furnace to raise the temperature to 550°C at a rate of 3°C / min and keep the temperature for 3h to obtain a light yellow solid B.

[0045] 3. Put the obtained light yellow solid B3g into 50mL of 4mol / L ammonium bifluoride, stir for 72h to remove the silica template. Afterwards, carry out suction filtration and wash with ultrapure water and absolute ethanol, and then place it in a vacuum drying oven at 50°C for 24 hours. After cooling to room temperature, grind and sieve to obtain mpg-C 3 N 4 -2 Adsorbent.

Embodiment 3

[0047] 1. Weigh 8mL of cyanamide into an alumina crucible, add 6mL of silica sol to it, heat in a water bath at 70°C and stir until completely mixed, then place in a vacuum oven and dry at 70°C for 18 hours to obtain blocky solid A .

[0048] 2. Grind the obtained massive solid A and then transfer it to a muffle furnace to raise the temperature to 450°C at a rate of 2°C / min and keep the temperature for 4h to obtain a light yellow solid B.

[0049] 3. Put 5 g of the obtained pale yellow solid B into 80 mL of 6 mol / L ammonium bifluoride, stir for 48 h to remove the silica template. Then carry out suction filtration and wash with ultrapure water and sewage ethanol, then place it in a vacuum drying oven at 70°C for 18 hours, and after it is cooled to room temperature, grind and sieve to obtain mpg-C 3 N 4 -3 Adsorbents.

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Abstract

The invention discloses a mpg-C3N4 adsorbing material as well as a preparation method and an application thereof. The method comprises the steps as follows: cyanamide is added to silica sol and heated to be completely mixed, vacuum drying is performed, an obtained solid is ground and calcined at 450-550 DEG C, a calcined product is added to an ammonium hydrogen fluoride solution, subjected to stirring, suction filtering, washing and vacuum drying, cooled to the room temperature, ground and sieved, and the mpg-C3N4 adsorbing material is obtained. A simple thermal polymerization method is adopted in the method, the material synthesis process is simple and good in repeatability, and mass production can be performed. The obtained mpg-C3N4 has very high specific surface area and can be used as an effective antibiotic adsorbent, the adsorption process is simple, easy to operate, low in energy consumption and high in adsorption capacity, the mpg-C3N4 can be widely applied to the antibiotic degradation field and has higher application prospects and use value.

Description

technical field [0001] The invention belongs to the field of adsorbents, and more specifically relates to a mesoporous carbon nitride adsorption material and its preparation method and application. Background technique [0002] At present, antibiotics (such as ofloxacin, norfloxacin, ciprofloxacin, etc.) have been widely used in medical treatment, animal and plant pest control and other aspects. However, after most antibiotics are absorbed by the body, most of them will be excreted in the feces in the parent form and enter the environment. Antibiotics entering the environment will not only kill many bacterial flora in the environment at extremely low environmental concentrations, but also induce the production of drug-resistant flora, causing serious harm to human health and the entire ecosystem. Therefore, there is an urgent need to develop a water treatment technology that has a significant removal effect on antibiotics in the water environment. [0003] Antibiotic waste...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C01B21/082C02F1/28C02F101/34C02F101/36C02F101/38
CPCB01J20/20B01J20/28083C01B21/0605C01P2006/16C02F1/283C02F2101/34C02F2101/36C02F2101/38
Inventor 刘国光王盈霏冯义平王枫亮吕文英
Owner GUANGDONG UNIV OF TECH
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