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flake g-c for bpa removal in water 3 no 4 /zif-8/agbr composite material and preparation method thereof

A technology of ZIF-8 and composite materials, which is applied in the direction of catalyst activation/preparation, water/sludge/sewage treatment, organic compound/hydride/coordination complex catalysts, etc., which can solve the problem of unsatisfactory degradation effect of composite materials, etc. , to achieve the effect of shortening the required time, high photocatalytic performance and improving utilization rate

Active Publication Date: 2022-03-01
CHANGZHOU UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the present application found that ZIF-8 / g-C 3 N 4 When used to degrade and remove environmental estrogen bisphenol A, ZIF-8 / g-C 3 N 4 The degradation effect of composite materials is not ideal

Method used

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  • flake g-c for bpa removal in water <sub>3</sub> no <sub>4</sub> /zif-8/agbr composite material and preparation method thereof
  • flake g-c for bpa removal in water <sub>3</sub> no <sub>4</sub> /zif-8/agbr composite material and preparation method thereof
  • flake g-c for bpa removal in water <sub>3</sub> no <sub>4</sub> /zif-8/agbr composite material and preparation method thereof

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Effect test

Embodiment 1

[0031] (1) Preparation of g-C 3 N 4

[0032] Put melamine into an alumina crucible with a cover; heat to 550°C in a muffle furnace at a rate of 5°C / min, and keep at 550°C for 4h to obtain a yellow product;

[0033] Add 0.1 g of the product to 80 mL of concentrated H 2 SO 4 In, the protonated g-C 3 N 4 It is in the form of flakes, the specific surface area is increased, and hydronium ions are generated on the surface, which has strong oxidizing properties and can enhance the photocatalytic effect. It was stirred and sonicated for 8 h; g-C was collected by centrifugation 3 N 4 and washed several times with distilled water; the product was dried at 60°C for 24h to obtain the treated g-C 3 N 4 product.

[0034] (2) The general synthesis method of ZIF-8

[0035] A. Add 3g of Zn(NO 3 ) 2 ·6H 2 The 2-methylimidazole of 0 and 6.6g is added in the 200mL methanol solvent respectively;

[0036] B. The solution was vigorously stirred at room temperature for 1 h overnight; ...

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Abstract

The present invention provides g-C flakes for the removal of bisphenol A in water 3 N 4 / ZIF-8 / AgBr composite material and preparation method thereof, to the g-C of ultrasonic mixing 3 N 4 / ZIF‑8 solution added with AgNO 3 solution and NaBr solution to prepare flake g‑C 3 N 4 / ZIF‑8 / AgBr composite. On the one hand, the AgBr added by the present invention can narrow the bandgap of ZIF-8; on the other hand, part of AgBr will generate Ag simple substance under visible light irradiation, effectively capture photogenerated electrons, thereby inhibiting the recombination of electron-hole pairs, greatly Improved photocatalytic degradation efficiency. And using X-ray diffraction to prove that it is difficult to solve the problem that existing MOF materials are difficult to degrade water pollutants through photocatalysis due to their wide energy gap bands. The material of the invention is novel, has the advantages of high photocatalytic degradation efficiency, simple preparation method and good stability, and can be used for degradation of environmental hormone pollutants.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of nanocomposite materials and environmental materials and their degradation of environmental pollutants, and relates to an ultrasonic-assisted deposition-precipitation method for preparing flake g-C 3 N 4 / ZI F-8 / AgBr composite material and its properties. Background technique: [0002] Environmental estrogens are a large class of substances. It mainly includes pesticides (such as: NNJ), additives (such as: bisphenol A), heavy metals (such as: lead), polycyclic aromatic hydrocarbons, diphyllin, polychlorinated biphenyls, plant-derived estrogens And drugs (diethylstilbestrol), etc., in view of its far-reaching negative effects, environmental estrogen pollution and control have attracted great attention from developed countries. The current traditional treatment methods are not only ineffective, but also not environmentally friendly, and are likely to cause secondary pollution to the enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22B01J31/26B01J37/34B01J37/03C02F1/30C02F101/34
CPCB01J31/1691B01J31/1815B01J31/26B01J37/343B01J37/031C02F1/30C02F2101/345C02F2305/10B01J2531/26B01J35/39
Inventor 冯胜郑玮吴唯段雪梅张跃
Owner CHANGZHOU UNIV
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