Ag3PO4/g-C3N4 Fenton catalytic material as well as preparation method and application thereof

A catalytic material, the technology of g-c3n4, is applied in the application field of high-efficiency degradation of tetracycline hydrochloride, can solve problems such as insufficient activity and iron sludge, and achieves the effects of improving catalytic oxidation activity, good repeatability and simple process

Pending Publication Date: 2021-08-31
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing heterogeneous iron-containing Fenton catalysts have the problem of insufficient activity
and produce pollutants such as iron sludge

Method used

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  • Ag3PO4/g-C3N4 Fenton catalytic material as well as preparation method and application thereof
  • Ag3PO4/g-C3N4 Fenton catalytic material as well as preparation method and application thereof
  • Ag3PO4/g-C3N4 Fenton catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First put urea in a muffle furnace and bake it at 550°C for 3 hours in an air atmosphere with a heating rate of 5°C / min to obtain g-C 3 N 4 . Then containing silver acetate and g-C 3 N 4 Dispersed in deionized water, where g-C 3 N 4 The mass ratio of sodium dihydrogen phosphate to silver acetate is 1:2.3. Stir in the dark for 1 hour, then add sodium dihydrogen phosphate solution to the above solution, and the molar ratio of sodium dihydrogen phosphate to silver acetate is 1:1.4. Sonicate for 1 hour under stirring and 100W power, centrifuge, and dry at 80°C for 12 hours to obtain Ag 3 PO 4 / g -C 3 N 4 Fenton-like catalytic materials.

[0035] Preparation of sample transmission electron microscope photos figure 1 shows that Ag 3 PO 4 The particle size is tens of nanometers to hundreds of nanometers, g-C 3 N 4 It is a sheet / layer structure. XRD results showed that Ag 3 PO 4 is a cubic phase.

Embodiment 2

[0037] First put urea in a muffle furnace and bake it at 550°C for 3 hours in an air atmosphere with a heating rate of 3°C / min to obtain g-C 3 N 4 . Then containing silver acetate and g-C 3 N 4 Dispersed in deionized water, where g-C 3 N 4 The mass ratio of sodium dihydrogen phosphate to silver acetate is 1:4. Stir in the dark for 1 hour, then add sodium dihydrogen phosphate solution to the above solution, and the molar ratio of sodium dihydrogen phosphate to silver acetate is 1:2. Sonicate for 1 hour under stirring and 100W power, centrifuge, and dry at 100°C for 8 hours to obtain Ag 3 PO 4 / g -C 3 N 4 Fenton-like catalytic materials.

Embodiment 3

[0039] First put melamine in a muffle furnace, and bake it at 600°C for 1 hour in an air atmosphere with a heating rate of 3°C / min to obtain g-C 3 N 4 . Then add silver nitrate and g-C 3 N 4 Dispersed in deionized water, where g-C 3 N 4 The mass ratio of sodium hydrogen phosphate to silver nitrate is 1:1. Stir in the dark for 2 hours, then add sodium hydrogen phosphate solution to the above solution, and the molar ratio of sodium hydrogen phosphate to silver nitrate is 1:1. Sonicate for 2 hours under stirring and 100W power, centrifuge, and dry at 90°C for 10 hours to obtain Ag 3 PO 4 / g -C 3 N 4 Fenton-like catalytic materials.

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Abstract

The invention provides a Ag3PO4/g-C3N4 type Fenton catalytic material. Ag3PO4 in the Ag3PO4/g-C3N4 type Fenton catalytic material is in a cubic phase, and g-C3N4 is of a sheet/layered structure. Under the combined action of the Ag3PO4/g-C3N4 Fenton catalytic material and H2O2, the Ag3PO4/g-C3N4 Fenton catalytic material has high and stable non-photocatalytic oxidation activity and excellent visible light catalytic activity and can also be used at night/dark places, iron mud and other adverse effects cannot be generated in the catalysis process, g-C3N4 as a promoter component can strongly interact with Ag3PO4, so that electrons are enriched around Ag < + > on the surface and become an active center, and the catalytic oxidation activity of the main catalyst is obviously improved. The invention further provides a preparation method of the Ag3PO4/g-C3N4 Fenton catalytic material. The preparation method is simple in process, good in repeatability and suitable for industrial production.

Description

technical field [0001] The patent of the present invention relates to the field of inorganic composite materials, especially Ag 3 PO 4 / g -C 3 N 4 Fenton-like and its preparation method and its application in efficiently degrading tetracycline hydrochloride. Background technique [0002] With the development of economy, water pollution is becoming more and more serious, which has become a major social problem that threatens human health and sustainable economic development. Industrial wastewater contains a large amount of highly toxic, stable, and difficult-to-decompose organic pollutants, such as residual antibiotics, organic dyes, etc. These organic pollutants have become one of the important sources of water pollution, causing serious harm to human and other biological health. Removal of refractory organic pollutants in organic wastewater has become a research hotspot and difficulty in the field of environment. [0003] As an advanced green oxidation technology, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/72C02F101/30C02F101/38
CPCB01J27/24C02F1/722C02F1/725C02F2101/38C02F2101/30C02F2305/026C02F2209/06
Inventor 聂龙辉李柳代志寅方彤田雨露
Owner HUBEI UNIV OF TECH
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