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fe 2 o 3 /g-c 3 no 4 Composite system, preparation method and application

A technology of g-c3n4 and fe2o3 is applied in the field of photocatalyst synthesis to achieve the effects of short reaction time, excellent photocatalytic activity and convenient mass production

Active Publication Date: 2020-01-24
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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  • fe <sub>2</sub> o <sub>3</sub> /g-c <sub>3</sub> no <sub>4</sub> Composite system, preparation method and application
  • fe <sub>2</sub> o <sub>3</sub> /g-c <sub>3</sub> no <sub>4</sub> Composite system, preparation method and application
  • fe <sub>2</sub> o <sub>3</sub> /g-c <sub>3</sub> no <sub>4</sub> Composite system, preparation method and application

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 photocatalyst synthesis, especially Fe 2 O 3 / g‑C 3 N 4 The composite system, preparation method and application can be used for visible light catalytic degradation of tetracycline hydrochloride pollutants. Accurately weigh P123 and hexamethyleneimine, dissolve them in a mixed solution of absolute ethanol and ethylene glycol, and stir to obtain solution A. Accurately weigh ferric chloride tetrahydrate, add it to solution A and dissolve it with ultrasound to form solution B. Add mesoporous g‑C to solution B 3 N 4 Suspension C is formed. Suspension C was subjected to ultrasonic dispersion and magnetic stirring to obtain turbid liquid D. Transfer the turbid liquid D to the reaction kettle and react in an oven at 200°C for 15 hours. After being naturally cooled to room temperature, it was centrifuged, washed, and dried to obtain solid F. Put solid F into a crucible and put it into a muffle furnace for calcination 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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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24A62D3/17A62D101/26
CPCA62D3/17B01J27/24A62D2101/26B01J35/39
Inventor 董红军张晓旭李春梅吴海君刘春波车慧楠艾俊哲
Owner DAQO GROUP CO LTD
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