Mesoporous photocatalyst, and preparation method and application thereof

Abstract

The invention belongs to the technical field of synthesis of a photocatalyst, and in particular relates to a mesoporous photocatalyst, and a preparation method and application thereof. The double doped Cu / Cl-g-C3N4 mesoporous photocatalyst is prepared by precisely controlling the reaction condition and the quantity of reactants; and the characterization result indicates that after pure g-C3N4 is doubly doped with metal Cu and non-metal Cl, the inherent mesoporous structure feature of the g-C3N4 is not changed, the specific surface area and the surface active sites are increased, the response range on visible light is expanded and the separation efficiency of current carriers is improved.

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...

Examples

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...

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...

Examples

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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