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A kind of composite photocatalytic material of carbon nitride and lanthanum ferrite and preparation method thereof

A technology of composite photocatalysis and lanthanum ferrite, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. High, complex photocatalyst preparation methods and other issues, to achieve the effect of simple preparation method, low equipment requirements, and good stability

Active Publication Date: 2019-07-05
GUIZHOU MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to: provide a kind of carbon nitride and lanthanum ferrite composite photocatalytic material and preparation method thereof, the obtained composite photocatalyst has good stability, high photocatalytic activity, simple preparation method, low equipment requirements, and Solve the problems of complex preparation methods of existing photocatalysts, high requirements for equipment, and relatively general stability and catalytic activity

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  • A kind of composite photocatalytic material of carbon nitride and lanthanum ferrite and preparation method thereof
  • A kind of composite photocatalytic material of carbon nitride and lanthanum ferrite and preparation method thereof
  • A kind of composite photocatalytic material of carbon nitride and lanthanum ferrite and preparation method thereof

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Embodiment 1

[0019] This embodiment provides a composite photocatalytic material of carbon nitride and lanthanum ferrite. In the composite material, the mass ratio of carbon nitride to lanthanum ferrite is 20:1.

[0020] At the same time, a preparation method of carbon nitride and lanthanum ferrite composite photocatalytic material is provided:

[0021] 1. Graphite phase carbon nitride (g-C 3 N 4 ) preparation, weigh 10.00g melamine in a semi-closed crucible, and put it in a muffle furnace at 5°C min -1 The temperature was raised to 550°C with a speed program, calcined at 550°C for 2 hours, cooled to room temperature, and ground into powder with a mortar.

[0022] 2. Weigh g-C 3 N 4 Powder 4.00g, ferric nitrate 0.34g and lanthanum nitrate 0.36g, in muffle furnace at 5°C min -1 The temperature was raised to 450°C with a speed program, calcined at 450°C for 3 hours, cooled to room temperature, and ground into powder with a mortar. The carbon nitride / lanthanum ferrite composite photocat...

Embodiment 2

[0024] This embodiment provides a composite photocatalytic material of carbon nitride and lanthanum ferrite. In the composite material, the mass ratio of carbon nitride to lanthanum ferrite is 10:1.

[0025] At the same time, a preparation method of carbon nitride and lanthanum ferrite composite photocatalytic material is provided:

[0026] 1. Graphite phase carbon nitride (g-C 3 N 4 ) preparation, weigh 10.00g melamine in a semi-closed crucible, and put it in a muffle furnace at 5°C min -1 The temperature was raised to 550°C with a speed program, calcined at 550°C for 2 hours, cooled to room temperature, and ground into powder with a mortar.

[0027] 2. Weigh g-C 3 N 4 Powder 4.00g, iron nitrate 0.68g and lanthanum nitrate 0.72g, in muffle furnace at 5°C min -1 The temperature was raised to 500°C with a speed program, calcined at 500°C for 2 hours, cooled to room temperature, and ground into powder with a mortar. The carbon nitride / lanthanum ferrite composite photocatal...

Embodiment 3

[0029] This embodiment provides a composite photocatalytic material of carbon nitride and lanthanum ferrite. In the composite material, the mass ratio of carbon nitride to lanthanum ferrite is 5:2.

[0030] At the same time, a preparation method of carbon nitride and lanthanum ferrite composite photocatalytic material is provided:

[0031] 1. Graphite phase carbon nitride (g-C 3 N 4 ) preparation, weigh 10.00g melamine in a semi-closed crucible, and put it in a muffle furnace at 5°C min -1 The temperature was raised to 550°C with a speed program, calcined at 550°C for 2 hours, cooled to room temperature, and ground into powder with a mortar.

[0032] 2. Weigh g-C 3 N 4 Powder 4.00g, ferric nitrate 2.72g and lanthanum nitrate 2.88g, in muffle furnace at 5°C min -1 The speed is programmed to heat up to 550°C, calcined at 550°C for 1 hour, cooled to room temperature, and ground into powder with a mortar. The carbon nitride / lanthanum ferrite composite photocatalytic material...

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Abstract

The invention provides a carbon nitride and lanthanum ferrite composite photocatalytic material and a preparation method thereof. In the composite material, the mass ratio of carbon nitride to lanthanum ferrite is 100:1 to 100:80. The preparation steps are: first prepare g‑C 3 N 4 , then, weigh g‑C 3 N 4 Powder, add ferric nitrate and lanthanum nitrate, grind until thoroughly mixed, g‑C 3 N 4 The mass ratio of powder, iron nitrate, and lanthanum nitrate is 400:6.8:7.2~400:544:576; place it in a muffle furnace and heat it to 350~550°C for calcination treatment for 1~3 hours to obtain a composite of carbon nitride and lanthanum ferrite. Photocatalytic materials. In order to solve the problems of complex preparation methods of existing photocatalysts, high equipment requirements, and relatively general stability and catalytic activity. The invention belongs to the field of semiconductor photocatalytic preparation.

Description

technical field [0001] The invention belongs to the field of semiconductor photocatalytic preparation, and in particular relates to a preparation method of a carbon nitride / lanthanum ferrite composite photocatalytic material. Background technique [0002] Carbon nitride is a novel visible-light responsive metal-free photocatalyst. Mainly composed of carbon and nitrogen, it is an organic polymer. Theoretical calculations show that graphitic carbon nitride (g-C 3 N 4 ) is the most stable at room temperature and has semiconducting properties. g-C 3 N 4 It is a two-dimensional sheet structure formed by connecting three-s-triazine through tertiary amine nitrogen. Compared with traditional metal catalysts, graphite-type carbon nitride has the advantages of high stability, acid and alkali resistance, and easy modification, and has broad application prospects in the field of catalysis. found g-C 3 N 4 Can catalyze Friedel-Crafts reaction, CO 2 Some important organic reacti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J23/83C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J23/83B01J27/24C02F2305/10C02F2101/34C02F2101/38B01J35/39
Inventor 冯建徐科徐红
Owner GUIZHOU MEDICAL UNIV