Iron-doped carbon nitride diatomite composite material and preparation method and application thereof

A carbon nitride diatomite and composite material technology, applied in chemical instruments and methods, special compound water treatment, catalyst carriers, etc., can solve the problems of poor visible light absorption, low photocatalytic efficiency, etc., and achieve adsorption performance and photocatalytic performance. Lifting, strong adsorption effect, large specific surface area effect

Inactive Publication Date: 2021-05-07
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To solve the existing blocky g-C 3 N 4 For the technical problems of poor visible light absorption and low photocatalytic efficiency, the present invention provides an iron-doped carbon nitride diatomite composite material and its preparation method and application

Method used

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  • Iron-doped carbon nitride diatomite composite material and preparation method and application thereof
  • Iron-doped carbon nitride diatomite composite material and preparation method and application thereof
  • Iron-doped carbon nitride diatomite composite material and preparation method and application thereof

Examples

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Embodiment 1

[0040] see figure 1 , this embodiment provides a method for preparing an iron-doped carbon nitride diatomite composite material, which is used to prepare an iron-doped carbon nitride diatomite composite material, namely Fe-g-C 3 N 4 / DE material. Wherein, the preparation method includes the following steps, namely steps (1)-(6).

[0041] (1) Dissolving urea in a deionized aqueous solution to form a mixed solution one. In this example, urea was dissolved in 30 ml of deionized water to form a urea solution, ie mixed solution one.

[0042] (2) Dissolve ferric chloride in mixed solution 1 to form mixed solution 2. In this embodiment, the amount of ferric chloride is 80 mg, that is, 80 mg of ferric chloride is placed in the urea solution obtained in the previous step.

[0043] (3) Diatomaceous earth was dissolved in deionized aqueous solution to form a mixed liquid three. In this embodiment, the mass ratio of urea and diatomite is 1:10, and diatomite is dissolved in 20 ml of ...

Embodiment 2

[0050] This example provides a method for adsorption and degradation of tetracycline in water. The method uses the iron-doped carbon nitride diatomite composite material prepared by the method for preparing the iron-doped carbon nitride diatomite composite material in Example 1. Adsorption and degradation of tetracycline in water. Fe-g-C 3 N 4 The / DE multifunctional nanocomposite can adsorb and degrade tetracycline in water, and use it as a Fenton-like photocatalyst to adsorb and degrade refractory pollutants, realizing the multifunctional synergy of adsorption / Fenton-like oxidation, and has excellent recyclability , compared with pristine diatomaceous earth and graphitic carbon nitride, the adsorption performance and photocatalytic performance are significantly improved.

Embodiment 3

[0052] This example provides a method for adsorption and degradation of tetracycline in water. The method is used to determine various adsorption conditions of tetracycline in water, so that the optimal adsorption conditions can be determined and efficient adsorption and degradation of tetracycline in water can be realized. Wherein, the adsorption degradation method includes the following steps, namely steps (a), (b), (c) and (d).

[0053] (a) First, the same amount of diatomite, doped carbon nitride diatomite composite material, and iron-doped carbon nitride diatomite composite material prepared by the iron-doped carbon nitride diatomite composite material in Example 1 were prepared. The diatomite composite material was added to tetracycline solutions with different concentrations and shaken, and then the adsorption rate of diatomite, carbon nitride-doped diatomite composite material and iron-doped carbon nitride diatomite composite material to tetracycline was measured . In...

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Abstract

The invention discloses an iron-doped carbon nitride diatomite composite material and a preparation method and application thereof. The preparation method comprises the following steps: dissolving urea in a deionized water solution to form a mixed solution I; dissolving ferric trichloride in the mixed solution I to form a mixed solution II; dissolving diatomite in a deionized water solution to form a mixed solution III; performing ultrasonic treatment on the mixed solution I, the mixed solution II and the mixed solution III, dropwise adding the mixed solution III into the mixed solution II, performing water bath stirring and drying to obtain a solid product, and finally grinding the solid product into powder; heating the ground powder to a preset temperature at a constant speed in a nitrogen atmosphere, and keeping the temperature for a period of time until yellow powder is generated; and grinding the yellow powder into the iron-doped carbon nitride diatomite composite material. The composite material disclosed by the invention has the characteristics of large specific surface area, low photo-induced electron hole recombination rate and high pollutant degradation efficiency, has a good function of cooperatively degrading pollutants, and can realize cyclic utilization of the composite material.

Description

technical field [0001] The invention relates to a method for preparing a composite material in the technical field of sewage treatment and resource utilization, in particular to a method for preparing an iron-doped carbon nitride diatomite composite material, and also to an iron-doped carbon nitride prepared by the preparation method The diatomite composite material also relates to an adsorption and degradation method for tetracycline in water using the iron-doped carbon nitride diatomite composite material. Background technique [0002] With the rapid development of social industry, the pollution of the ecological environment by human survival activities is becoming more and more serious, and environmental pollution has become an important problem in the global ecosystem. Environmental pollution caused by human activities produces a variety of harmful substances, such as the discharge of domestic sewage, heavy metal pollutants discharged by factories and enterprises, and a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/02B01J32/00C02F1/28C02F1/30C02F1/72C02F101/34C02F101/38
CPCB01J27/24B01J35/004B01J35/026C02F1/281C02F1/30C02F1/725C02F2305/026C02F2305/10C02F2101/34C02F2101/38
Inventor 陈星张玉吴玉程刘旭崔康平笪春年王宇
Owner HEFEI UNIV OF TECH
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