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A kind of mesoporous photocatalyst and its preparation method and application

A photocatalyst and mesoporous technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve undiscovered problems, achieve short reaction time, reduce costs, and facilitate mass production.

Active Publication Date: 2019-12-31
DAQO GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no complexation-calcination method has been found in mesoporous g-C 3 N 4 Simultaneous introduction of metallic Cu and non-metallic Cl elements to prepare dual-doped Cu / Cl-g-C 3 N 4 mesoporous photocatalyst

Method used

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  • A kind of mesoporous photocatalyst and its preparation method and application
  • A kind of mesoporous photocatalyst and its preparation method and application
  • A kind of mesoporous photocatalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: 0.77wt% double doped Cu / Cl-g-C 3 N 4 Preparation of Mesoporous Photocatalysts

[0032] 1. Preparation of mesoporous g-C 3 N 4 catalyst of light

[0033] 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.

[0034] 2. Use 1mol L after taking it out -1 Soak and stir in nitric acid for 24 hours, filter, then wash with distilled water 7-8 times until neutral, and dry in an oven at 80°C for 24 hours.

[0035] 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 thermally exfoliated g-C 3 N 4 catalyst of light.

[0036] 2. Preparation of 0.77wt% double-doped Cu / Cl-g-C 3 N 4 mesoporous photocatalyst

[0037] 1. Accurately weigh 0.0023g cuprous chloride, dissolve it in 5mL ammonia water, and ultras...

Embodiment 2

[0043] Embodiment 2: 1.53wt% double doping Cu / Cl-g-C 3 N 4 Preparation of Mesoporous Photocatalysts

[0044] 1. Preparation of mesoporous g-C 3 N 4 catalyst of light

[0045] 1. Weigh a certain amount of 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 was heated from room temperature to 550°C, and calcined for 4h.

[0046] 2. Use 1mol L after taking it out -1 Soak in nitric acid and stir for 24 hours, then filter, then wash with distilled water 7-8 times until neutral, and dry in an oven at 80°C for 24 hours.

[0047] 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 for thermal exfoliation to obtain mesoporous g-C 3 N 4 catalyst of light.

[0048] 2. Preparation of 1.53wt% double-doped Cu / Cl-g-C 3 N 4 mesoporous photocatalyst

[0049] 1. Accurately weigh 0.0046g of cuprous ...

Embodiment 3

[0055] Embodiment 3: 4.57wt% double doping Cu / Cl-g-C 3 N 4 mesoporous photocatalyst

[0056] 1. Preparation of mesoporous g-C 3 N 4 catalyst of light

[0057] 1. Weigh a certain amount of 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 was heated from room temperature to 550°C, and calcined for 4h.

[0058] 2. Use 1mol L after taking it out -1 Soak in nitric acid and stir for 24 hours, then filter, then wash with distilled water 7-8 times until neutral, and dry in an oven at 80°C for 24 hours.

[0059] 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 for thermal exfoliation to obtain mesoporous g-C 3 N 4 catalyst of light.

[0060] 2. Preparation of 4.57wt% double-doped Cu / Cl-g-C 3 N 4 mesoporous photocatalyst

[0061] 1. Accurately weigh 0.0137g of cuprous chloride, dissol...

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Abstract

The invention belongs to the technical field of photocatalyst synthesis, and specifically refers to a mesoporous photocatalyst and its preparation method and application. Preparation of double-doped Cu / Cl‑g‑C by precisely controlling reaction conditions and amounts of reactants 3 N 4 Mesoporous photocatalyst, characterization results indicate pure g‑C 3 N 4 After double doping with metallic Cu and non-metallic Cl, g‑C did not change 3 N 4 The inherent mesoporous structural characteristics simultaneously increase the specific surface area and surface active sites, expand the visible light response range, and improve the carrier separation efficiency.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst synthesis, and uses a complexation-calcination method to synthesize Cu / Cl-g-C double-doped with metallic Cu and non-metallic Cl elements 3 N 4 Mesoporous photocatalyst for visible light degradation of tetracycline hydrochloride pollutants. Background technique [0002] In recent years, antibiotics have been widely used in the treatment of diseases in humans and animals. Due to the large amount of use, it has caused a certain degree of environmental pollution. Among them, tetracycline hydrochloride, as a kind of antibiotics, ranks second in the global production and use, and its environmental residues will cause a series of ecological pollution; at the same time, it will also produce drug resistance to bacteria and affect human health. Therefore, it is imminent to effectively remove tetracycline hydrochloride residues in the environment. After research, it was found that some conventional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10C02F1/30C02F101/38C02F101/34C02F101/36
CPCC02F1/30B01J27/24C02F2305/10C02F2101/34C02F2101/38C02F2101/36B01J35/64B01J35/39
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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