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Ternary composite catalytic material for removing tetracycline in wastewater and preparation method of ternary composite catalytic material

A ternary composite and catalytic material technology, applied in chemical instruments and methods, physical/chemical process catalysts, water pollutants, etc., can solve the problem of high photo-induced electron-hole recombination rate, affecting photocatalytic efficiency, and photocatalytic activity and other problems, to achieve the effect of improving photocatalytic performance, improving photocatalytic performance and high stability

Pending Publication Date: 2021-12-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But in the photocatalytic process, g-C 3 N 4 It is difficult to exhibit high photocatalytic activity due to its inherent defects
First, g-C 3 N 4 The wide bandgap (~2.7 eV) limits its efficiency of utilizing sunlight, which in turn leads to the generation of fewer photogenerated carriers, which ultimately affects its photocatalytic activity.
Second, due to the prepared g-C 3 N 4 The specific surface area is low, so the photocatalyst has fewer active sites during the photoreaction process, which affects the photocatalytic efficiency
Finally, due to the inherent defects of its structure, the photoinduced electron-hole recombination rate is high, which eventually has an inhibitory effect on its photocatalytic activity.

Method used

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  • Ternary composite catalytic material for removing tetracycline in wastewater and preparation method of ternary composite catalytic material
  • Ternary composite catalytic material for removing tetracycline in wastewater and preparation method of ternary composite catalytic material
  • Ternary composite catalytic material for removing tetracycline in wastewater and preparation method of ternary composite catalytic material

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Effect test

Embodiment 1

[0037] This embodiment provides a kind of AgCl / Bi 12 o 15 Cl 6 / g -C 3 N 4 Preparation method and application of ternary composite catalytic material:

[0038] (1) g-C 3 N 4 Preparation of:

[0039] Weigh 20 g of urea, place it in an alumina crucible with a cover, heat it to 550 °C in an electric furnace at a rate of 5 °C / min, and keep it for 4 h. Cool to room temperature after the end of the reaction, grind and collect the light yellow powder obtained to obtain g-C 3 N 4 sample;

[0040] (2) Bi 12 o 15 Cl 6 Preparation of:

[0041] Weigh 1 mmol of Bi(NO 3 ) 3 • 5H 2 O, was dissolved into 10 mL of ethylene glycol under vigorous stirring to form a homogeneous solution A. Simultaneously weigh 0.33 mmol of NH 4 Cl, which was dissolved in 35 mL of distilled water to form solution B. Solution A was slowly added to solution B under vigorous stirring, and stirred at room temperature for 1 h. After stirring, it was transferred to an autoclave and heated at 160 °C f...

Embodiment 2

[0056] This embodiment provides a kind of AgCl / Bi 12 o 15 Cl 6 / g -C 3 N 4 Preparation method and application of ternary composite catalytic material:

[0057] (1) g-C 3 N 4 Preparation of:

[0058] Weigh 20 g of urea, place it in an alumina crucible with a cover, heat it to 550 °C in an electric furnace at a rate of 5 °C / min, and keep it for 4 h. Cool to room temperature after the end of the reaction, grind and collect the light yellow powder obtained to obtain g-C 3 N 4 sample;

[0059] (2) Bi 12 o 15 Cl 6 Preparation of:

[0060] Weigh 1 mmol of Bi(NO 3 ) 3 • 5H 2 O, was dissolved into 10 mL of ethylene glycol under vigorous stirring to form a homogeneous solution A. Simultaneously weigh 0.33 mmol of NH 4 Cl, which was dissolved in 35 mL of distilled water to form solution B. Solution A was slowly added to solution B under vigorous stirring, and stirred at room temperature for 1 h. After stirring, it was transferred to an autoclave and heated at 160 °C f...

Embodiment 3

[0070] This embodiment provides a kind of AgCl / Bi 12 o 15 Cl 6 / g -C 3 N 4 Preparation method and application of ternary composite catalytic material:

[0071] (1) g-C 3 N 4 Preparation of:

[0072] Weigh 20 g of urea, place it in an alumina crucible with a cover, heat it to 550 °C in an electric furnace at a rate of 5 °C / min, and keep it for 4 h. Cool to room temperature after the end of the reaction, grind and collect the light yellow powder obtained to obtain g-C 3 N 4 sample;

[0073] (2) Bi 12 o 15 Cl 6 Preparation of:

[0074] Weigh 1 mmol of Bi(NO 3 ) 3 • 5H 2 O, was dissolved into 10 mL of ethylene glycol under vigorous stirring to form a homogeneous solution A. Simultaneously weigh 0.33 mmol of NH 4 Cl, which was dissolved in 35 mL of distilled water to form solution B. Solution A was slowly added to solution B under vigorous stirring, and stirred at room temperature for 1 h. After stirring, it was transferred to an autoclave and heated at 160 °C f...

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Abstract

The invention discloses a ternary composite catalytic material for removing tetracycline in wastewater and a preparation method of the ternary composite catalytic material. The preparation method comprises the following steps: (1) preparing g-C3N4; (2) preparing Bi12O15Cl6 ; (3) preparing a Bi12O15Cl6 / g-C3N4 binary composite material; and (4) preparing the AgCl / Bi12O15Cl6 / g-C3N4 ternary composite catalytic material. The prepared ternary composite catalytic material can be used for degrading tetracycline under the visible light condition. The ternary photocatalyst is synthesized through a wet impregnation method, and the method has the advantages of being simple in operation method and easy to implement. AgCl and Bi12O15Cl6 are doped on g-C3N4, so that the utilization rate of g-C3N4 to visible light is effectively improved, the separation efficiency of photon-generated carriers is promoted, and the visible light catalysis efficiency is further improved; and the process flow is simple and convenient to operate, and has a great application prospect in the aspect of sewage treatment.

Description

technical field [0001] The present invention relates to a kind of AgCl / Bi for removing tetracycline in waste water 12 o 15 Cl 6 / g -C 3 N 4 The invention relates to a ternary composite catalytic material and a preparation method thereof, which belong to the technical field of catalyst preparation and application. Background technique [0002] The advancement of science and technology and the development of society have promoted the rapid development of the pharmaceutical industry. However, the rapid development of the pharmaceutical industry is accompanied by the abuse of antibiotics and the rapid growth of medical wastewater discharge. Facing the increasingly serious problem of medical wastewater pollution, traditional treatment methods have been difficult to remove efficiently. In recent years, photocatalytic technology has rapidly emerged due to its environmental protection and no secondary pollution. Photocatalytic reaction is an advanced oxidation technology with ...

Claims

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Application Information

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IPC IPC(8): B01J27/06B01J27/10B01J27/24B01J35/00C02F1/30C02F101/38
CPCB01J27/10B01J27/06B01J27/24C02F1/30C02F2305/10C02F2101/38B01J35/39
Inventor 李育珍霍浩浩夏云生石建惠谭思洋
Owner TAIYUAN UNIV OF TECH
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