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A graphite oxide phase monolayer c 3 no 4 Composite membrane material and its preparation method and application

A technology of C3N4 and graphite phase, which is applied in the field of graphite oxide phase single-layer C3N4 composite membrane material and its preparation, can solve the problems of limited application and no visible light response, and achieve the effect of increased contact area and excellent recyclability

Active Publication Date: 2020-12-22
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one of the biggest problems of titanium dioxide catalysis is that it does not have visible light response, which limits its application in actual production and life, so it is urgent to develop a catalyst with visible light response

Method used

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  • A graphite oxide phase monolayer c <sub>3</sub> no <sub>4</sub> Composite membrane material and its preparation method and application
  • A graphite oxide phase monolayer c <sub>3</sub> no <sub>4</sub> Composite membrane material and its preparation method and application
  • A graphite oxide phase monolayer c <sub>3</sub> no <sub>4</sub> Composite membrane material and its preparation method and application

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preparation example Construction

[0026] Such as figure 1 As shown, a graphite oxide phase monolayer C 3 N 4 The preparation method of composite membrane material comprises the following steps: weighing O-g-C 3 N 4 and N-CNT in two centrifuge tubes, respectively added concentrated hydrochloric acid, ultrasonic 90min. O-g-C treated with concentrated hydrochloric acid 3 N 4 Mix with N-CNT in the same centrifuge tube, centrifuge, wash 3 times with water, and keep the precipitate. Add GO, mix and sonicate for 2h to obtain a mixed solution. Install the suction filtration device, take the mixed solution for suction filtration, take it out after suction filtration, dry, add ethanol solution dropwise on the back of the filter membrane, and mix O-g-C 3 N 4 / GO / N-CNT membrane was peeled off from the filter membrane, and finally a graphite oxide phase monolayer C 3 N 4 Composite membrane materials such as figure 2 , image 3 shown. from figure 2 It can be seen from the optical pictures that the film can b...

Embodiment 1

[0031] Example 1: Graphite Oxide Phase Monolayer C 3 N 4 Application of composite membrane materials in photocatalytic degradation of antibiotic molecules in water. Accurately take 20mL of tetracycline hydrochloride solution with a concentration of 10mg / L in the quartz photoreactor, take a sample of 0.5mL and mark it as -30 in a 1.5mL centrifuge tube, then add graphite oxide phase monolayer C into the reactor 3 N 4 Composite membrane material, take a sample of 0.5mL in a 1.5mL centrifuge tube after ventilating and stirring for 30min in a dark place, and mark it as 0. Turn on the circulating condensate device and the xenon lamp light source in turn (there is a 400nm filter at the xenon lamp light source), start the photocatalytic reaction process, take 0.5mL samples every 30min and put them in a 1.5mL centrifuge tube and mark them, and the photoreaction ends when it reaches 360min . The sample was centrifuged at 10000r / min for 30min, and the absorbance of tetracycline hydro...

Embodiment 2

[0038] Example 2: Graphite Oxide Phase Monolayer C 3 N 4 Application of composite membrane material in photocatalytic degradation of organic dye pollutant molecules in water body. Accurately take 20mL of rhodamine 6G solution with a concentration of 10mg / L in the quartz photoreactor, take a sample of 0.5mL and mark it as -30 in a 1.5mL centrifuge tube, and then add graphite oxide phase monolayer C into the reactor 3 N 4 Composite membrane material, take a sample of 0.5mL in a 1.5mL centrifuge tube after ventilating and stirring for 30min in a dark place, and mark it as 0. Turn on the circulating condensate device and the xenon lamp light source in turn (there is a 400nm filter at the xenon lamp light source), start the photocatalytic reaction process, take 0.5mL samples every 30min and put them in a 1.5mL centrifuge tube and mark them, and the photoreaction ends when it reaches 360min . The sample was centrifuged at 10000r / min for 30min, and the absorbance of rhodamine 6G ...

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Abstract

The invention provides an oxide graphite phase single layer C 3 N 4 Composite membrane material and its preparation method and use. The prepared composite membrane material is used for photodegradation of antibiotics and organic dyes in water, and can be reused by achieving self-cleaning through visible light degradation. GO and N-CNT are used to treat graphite phase single Layer C 3 N 4 Perform surface modification to prepare graphite oxide phase single layer C 3 N 4 Composite membrane materials.

Description

technical field [0001] The invention relates to a graphite oxide phase monolayer C 3 N 4 Composite membrane material and its preparation method and use. Background technique [0002] The traditional water treatment technology in my country is a physical method, including filter materials of various pore sizes, which use the adsorption or barrier methods of materials to remove impurities in water, but this filtering method cannot completely remove antibiotics and organic dye molecules in water. Therefore, it is urgent to find a method that can thoroughly remove antibiotics and organic dyes in water. [0003] The photocatalytic oxidation method has unique advantages for the treatment of antibiotic-containing water and organic dye wastewater. The advantage lies in the fact that pollutants can be completely degraded into non-toxic small molecules through the redox reaction of photocatalytically active molecules. For the photocatalytic oxidation method, the most important thin...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/34B01J37/03C02F1/30C02F101/34C02F101/38C02F103/34
CPCC02F1/30B01J27/24B01J37/031B01J37/343C02F2305/10C02F2103/343C02F2101/34C02F2101/38C02F2101/308B01J35/59B01J35/39
Inventor 李海涛朱根渠陆陆杨国海
Owner XUZHOU NORMAL UNIVERSITY
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