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Fe2O3/g-C3N4 composite system and preparation method and application thereof

A fe2o3, 1.fe2o3 technology, applied in the field of photocatalyst synthesis, to achieve excellent photocatalytic activity, facilitate mass production, and convenient operation

Active Publication Date: 2018-03-27
DAQO GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no one-step solvothermal synthesis of mesoporous Fe 2 o 3 Nanosphere modified g-C 3 N 4 The "Z-Scheme" type Fe 2 o 3 / g -C 3 N 4 Composite system

Method used

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  • Fe2O3/g-C3N4 composite system and preparation method and application thereof
  • Fe2O3/g-C3N4 composite system and preparation method and application thereof
  • Fe2O3/g-C3N4 composite system and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Mesoporous "Z-Scheme" type Fe 2 o 3 / g -C 3 N 4 Preparation of composite system

[0036] 1. Preparation of g-C 3 N 4 catalyst of light

[0037] 1. Weigh urea, dry it in an oven at 80°C for 24 hours, grind it and put it into a crucible, cover it, and place it in a muffle furnace at 2°C min -1 The heating rate is from room temperature to 550°C, and calcined for 4h.

[0038] 2. Use 1mol L after taking it out -1 Soak and stir in nitric acid for 24 hours, filter, wash with distilled water 7-8 times until neutral, and dry in an oven at 80°C for 24 hours.

[0039] 3. Take out the sample and grind it, place it in a crucible, and calcinate it in a muffle furnace at 500°C for 4 hours without a cover to obtain mesoporous g-C 3 N 4 catalyst of light.

[0040] 2. Preparation of mesoporous “Z-Scheme” Fe 2 o 3 / g -C 3 N 4 Composite system

[0041] 1. Accurately weigh 0.2g of P123 and 0.1g of hexamethyleneimine, dissolve in a mixed solution of 16.5ml of absol...

Embodiment 2

[0048] Example 2: Mesoporous "Z-Scheme" type Fe 2 o 3 / g -C 3 N 4 Preparation of composite system

[0049] 1. Preparation of g-C 3 N 4 catalyst of light

[0050] 1. Weigh urea, dry it in an oven at 80°C for 24 hours, grind it and put it into a crucible, cover it, and place it in a muffle furnace at 2°C min -1 The heating rate is from room temperature to 550°C, and calcined for 4h.

[0051] 2. Use 1mol L after taking it out -1 Soak and stir in nitric acid for 24 hours, filter, wash with distilled water 7-8 times until neutral, and dry in an oven at 80°C for 24 hours.

[0052] 3. Take out the sample and grind it, place it in a crucible, and calcinate it in a muffle furnace at 500°C for 4 hours without a cover to obtain mesoporous g-C 3 N 4 catalyst of light.

[0053] 2. Preparation of mesoporous “Z-Scheme” Fe 2 o 3 / g -C 3 N 4 Composite system

[0054] 1. Accurately weigh 0.2g of P123 and 0.1g of hexamethyleneimine, dissolve in a mixed solution of 16.5ml of absol...

Embodiment 3

[0061] Example 3: Mesoporous "Z-Scheme" type Fe 2 o 3 / g -C 3 N 4 Preparation of composite system

[0062] 1. Preparation of g-C 3 N 4 catalyst of light

[0063] 1. Weigh urea, dry it in an oven at 80°C for 24 hours, grind it and put it into a crucible, cover it, and place it in a muffle furnace at 2°C min -1 The heating rate is from room temperature to 550°C, and calcined for 4h.

[0064] 2. Use 1mol L after taking it out -1 Soak and stir in nitric acid for 24 hours, filter, wash with distilled water 7-8 times until neutral, and dry in an oven at 80°C for 24 hours.

[0065] 3. Take out the sample and grind it, place it in a crucible, and calcinate it in a muffle furnace at 500°C for 4 hours without a cover to obtain mesoporous g-C 3 N 4 catalyst of light.

[0066] 2. Preparation of mesoporous “Z-Scheme” Fe 2 o 3 / g -C 3 N 4 Composite system

[0067] 1. Accurately weigh 0.2g of P123 and 0.1g of hexamethyleneimine, dissolve in a mixed solution of 16.5ml of absol...

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Abstract

The invention belongs to the technical field of synthesis of a photocatalyst, and especially relates to a Fe2O3 / g-C3N4 composite system and a preparation method and an application thereof, which can be used for catalytic degradation of tetracycline hydrochloride pollutants by visible light. The method comprises the following steps: accurately weighing P123 and hexamethylene imine, dissolving the materials in a mixed solution of absolute ethyl alcohol and ethylene glycol, and stirring the materials to obtain a solution A; accurately weighing tetrahydrate ferrous chloride, and adding tetrahydrate ferrous chloride in the solution A and performing ultrasonic dissolving to form a solution B; adding mesoporous g-C3N4 in the solution B to form a fluid suspension C; performing ultrasonic dissolving and magnetic stirring on the fluid suspension C to obtain turbid liquid D; transferring the turbid liquid D to a reaction vessel, and reacting the materials in a baking oven at the temperature of 200 DEG C for 15 h; naturally cooling the materials to room temperature, and performing centrifugation, washing, and drying to obtain a solid F; and placing the solid F in a crucible, and placing the materials in a muffle furnace for calcining to obtain a sample.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst synthesis and uses a simple and fast solvothermal method to synthesize mesoporous Fe in one step 2 o 3 Nanosphere modified g-C 3 N 4 The mesoporous "Z-Scheme" type Fe 2 o 3 / g -C 3 N 4 The composite system can be used for visible light catalytic degradation of tetracycline hydrochloride pollutants. Background technique [0002] With the global energy crisis and environmental pollution becoming more and more serious, it is imperative to develop and utilize clean and renewable energy. Solar energy is currently one of the cleanest, most realistic and most promising renewable energy sources in the world, suitable for large-scale development and utilization. The photocatalytic technology has the characteristics of energy saving, high efficiency, and environmental protection, and is an ideal new method for using clean solar energy to control environmental pollution. However, designing and...

Claims

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Application Information

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IPC IPC(8): B01J27/24A62D3/17A62D101/26
CPCA62D3/17B01J27/24A62D2101/26B01J35/39
Inventor 李春梅吴海君董红军刘春波车慧楠张晓旭艾俊哲
Owner DAQO GROUP CO LTD
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