MOFS/COFS heterojunction composite photocatalyst and preparation method and application thereof

Inventors: Xiaoli Zhao (Beijing, CN); Lin Niu (Beijing, CN); Fengchang Wu (Beijing, CN)

Assignee: GUANGDONG INSTITUTE OF ECO-ENVIRONMENT AND SOIL SCIENCES

B01J31/1691 B01J35/39 B01J37/0036 B01J37/04 C07F15/025 B01J2531/004 B01J2531/842 C02F1/30 C02F1/725 C02F2101/34 C02F2101/38 C02F2305/10

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Quick Facts

Patent No.: US 12661642
App. No.: 18/135,118
Granted: Jun 23, 2026
Kind: B2

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Abstract

The application belongs to the technical field of photocatalyst preparation, and specifically relates to a MOFs/COFs heterojunction composite photocatalyst and a preparation method and application thereof. The application uses melamine (MA), 1,3,5-trimethylphloroglucinol (Tp), 2-aminoterephthalic acid, and ferrous acetate as reaction raw materials, a catalyst is added, and a mechanical grinding method is used, to prepare the MOFs/COFs heterojunction composite photocatalyst. The catalyst is simple and green in preparation method, and has the better degradation efficiency for pollutants in water, especially carbamazepine.

Claims (12)

1 . A preparation method for an MOFs/COFs heterojunction composite photocatalyst, comprising the following steps:

using melamine (MA), 1,3,5-trimethylphloroglucinol (Tp), 2-aminoterephthalic acid, and ferrous acetate as reaction raw materials, adding a catalyst, and preparing the MOFs/COFs heterojunction composite photocatalyst by using a mechanical grinding method,

wherein the catalyst is p-toluenesulfonic acid.

2 . The preparation method for the MOFs/COFs heterojunction composite photocatalyst as claimed in claim 1 , wherein the preparation method comprises the following steps:

(1) taking and adding MA, 2-aminoterephthalic acid, and the catalyst to a grinding tank for mixing and grinding;

(2) then adding Tp and ferrous acetate to the grinding tank, and grinding continuously; and

(3) adding water to the grinding tank, and grinding continuously, washing with dimethyl formamide (DMF), and vacuum-drying, to obtain the MOFs/COFs heterojunction composite photocatalyst.

3 . The preparation method for the MOFs/COFs heterojunction composite photocatalyst as claimed in claim 2 , wherein the catalyst is a solution of the p-toluenesulfonic acid in acetic acid, and in the solution of the p-toluenesulfonic acid in acetic acid, a mass fraction of the p-toluenesulfonic acid is 12 wt %.

4 . The preparation method for the MOFs/COFs heterojunction composite photocatalyst as claimed in claim 2 , wherein during the grinding in steps (1) to (3), grinding balls are used, and the grinding balls each having a diameter of 5 mm or 7 mm.

5 . The preparation method for the MOFs/COFs heterojunction composite photocatalyst as claimed in claim 2 , wherein during the grinding in steps (1) to (3), grinding balls are used, and the grinding balls represent a mixture of grinding balls with a size of 5 mm and grinding balls with a size of 7 mm.

6 . The preparation method for the MOFs/COFs heterojunction composite photocatalyst as claimed in claim 2 , wherein in step (1), a grinding time is in a range of 30-60 minutes; and a rotational speed for the grinding is in a range of 300-600 rpm.

7 . The preparation method for the MOFs/COFs heterojunction composite photocatalyst as claimed in claim 2 , wherein in step (2), a grinding time is in a range of 3-5 hours; and in step (3), a grinding time is in a range of 3-5 hours.