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Iron bismuth titanate-graphite phase carbon nitride composite photocatalyst, preparation method thereof and method of degrading antibiotics

A technology of graphite phase carbon nitride and bismuth iron titanate, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low photocatalytic efficiency and easy compounding, and achieve the goal of preparation process The effect of simplicity, easy availability of raw material sources, and wide range of raw material sources

Inactive Publication Date: 2019-02-22
湖北省工程咨询股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the photocatalytic efficiency of ordinary graphitic carbon nitride photocatalysts is also low due to the easy recombination of photogenerated electrons and holes of graphitic carbon nitride.

Method used

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  • Iron bismuth titanate-graphite phase carbon nitride composite photocatalyst, preparation method thereof and method of degrading antibiotics
  • Iron bismuth titanate-graphite phase carbon nitride composite photocatalyst, preparation method thereof and method of degrading antibiotics
  • Iron bismuth titanate-graphite phase carbon nitride composite photocatalyst, preparation method thereof and method of degrading antibiotics

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Embodiment 1

[0028] Embodiment 1 of the present invention is a preparation method of a bismuth iron titanate-graphite phase carbon nitride composite photocatalyst, comprising the following steps:

[0029] Step 1: preparing bismuth iron titanate nanosheets;

[0030] Step 2: Put the bismuth iron titanate nanosheets into absolute ethanol and mix evenly, then add graphite phase carbon nitride and perform ultrasonic treatment to obtain the product;

[0031] Step 3: After washing and drying the product, a composite photocatalyst of bismuth iron titanate-graphite phase carbon nitride is obtained.

Embodiment 2

[0032] Embodiment 2 of the present invention is a preparation method of a bismuth ferrotitanate-graphite carbon nitride composite photocatalyst. On the basis of Embodiment 1, the step 1 is specifically:

[0033] Step 11: dissolving bismuth nitrate pentahydrate, ferric nitrate nonahydrate and tetrabutyl titanate in nitric acid solution, stirring evenly to obtain mixture I;

[0034] Step 12: adding sodium hydroxide solution dropwise to the mixture I, stirring evenly to obtain mixture II;

[0035] Step 13: subjecting the mixture II to a hydrothermal reaction, and separating the precipitate after cooling;

[0036] Step 14: Wash and dry the precipitate to obtain bismuth ferro-titanate nanosheets.

Embodiment 3

[0037] Example 3 of the present invention is a preparation method of a bismuth iron titanate-graphite phase carbon nitride composite photocatalyst. On the basis of Example 2, the bismuth nitrate pentahydrate, the iron nitrate nonahydrate and the titanic acid The mass ratio of tetrabutyl ester is 6:1:2.53.

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Abstract

The invention relates to an iron bismuth titanate-graphite phase carbon nitride composite photocatalyst, a preparation method thereof and a method of degrading antibiotics. The preparation method includes the steps of 1, preparing iron bismuth titanate nanosheets; 2, adding the iron bismuth titanate nanosheets in anhydrous ethyl alcohol, mixing well, adding graphite phase carbon nitride, and performing ultrasonic treatment to obtain a product; 3, washing the product, and drying to obtain the iron bismuth titanate-graphite phase carbon nitride composite photocatalyst. The iron bismuth titanate-graphite phase carbon nitride composite photocatalyst is prepared herein through a hydrothermal-ultrasonic combination process; the preparation process is simple. Graphite phase carbon nitride is usedto modify a laminated ferroelectric material iron bismuth titanate so as to prepare a heterojunction photocatalyst; the interfacial charge separation effect of the heterojunction photocatalyst enables the prepared iron bismuth titanate-graphite phase carbon nitride composite photocatalyst to exhibit good photocatalytic deactivation of antibiotics in visible light.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a bismuth iron titanate-graphite phase carbon nitride composite photocatalyst, a preparation method and an antibiotic degradation method. Background technique [0002] Photocatalytic technology has shown unique potential application value in the treatment of environmental problems and energy crisis, especially in the efficient degradation of antibiotics in water. Layered ferroelectric materials, because of their low cost, redox ability and high photochemical stability, have become one of the photocatalyst materials that have attracted much attention; the most common layered ferroelectric materials are ferro-titanic acid Bismuth, due to its diversity of crystal structure and electronic structure, suitable energy band structure and high mobility of photogenerated carriers, has been regarded as a potential high-efficiency photocatalyst material. However, bismuth ferro-titana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/10B01J37/34C02F1/30C02F101/30C02F101/34C02F101/38
CPCC02F1/30B01J27/24B01J37/10B01J37/343C02F2305/10C02F2101/34C02F2101/30C02F2101/38B01J35/39
Inventor 王继全张高科秦茜周婕姚成鹏袁念念邵婷黄鹏黄莹蔡国沛
Owner 湖北省工程咨询股份有限公司