Solid super-molecular photocatalyst integrating Fenton effect and photocatalysis as well as preparation method and application thereof

A photocatalyst and integrated Fenton technology, applied in the field of photocatalysis, can solve the problem that iron ions cannot be reused, and achieve the effect of reducing iron loss and fast reaction speed

Inactive Publication Date: 2015-03-25
INNER MONGOLIA UNIV FOR THE NATITIES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming that the loss of iron ions in the Fenton reaction cannot be reused, and provides a solid supramolecular photocatalyst integrating the Fenton effect and photocatalysis and its preparation method and application to solve the above problems

Method used

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  • Solid super-molecular photocatalyst integrating Fenton effect and photocatalysis as well as preparation method and application thereof
  • Solid super-molecular photocatalyst integrating Fenton effect and photocatalysis as well as preparation method and application thereof

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Effect test

Embodiment 1

[0030] 1. Dissolve ferric chloride hexahydrate in ultrapure water to obtain 1mM ferric chloride solution;

[0031] Two, after adjusting the pH of the ferric chloride solution to be no more than 1, add sodium oxalate to it according to the stoichiometric ratio, to obtain the iron-oxalic acid complex;

[0032] 3. According to the g-C per 0.1g 3 N 4 join 1×10 -4 The ratio of mol of iron-oxalate complex will be g-C 3 N 4 It is mixed with iron-oxalic acid complex, stirred for 12 hours, and then dried at 80°C to obtain a solid supramolecular photocatalyst.

Embodiment 2

[0034] 1. Dissolve ferric nitrate hexahydrate in ultrapure water to obtain a 10mM ferric nitrate solution;

[0035] Two, after adjusting the pH of ferric chloride solution to be no more than 1, trisodium citrate is added thereto by stoichiometric ratio to obtain iron-citric acid complex;

[0036] 3. According to the g-C per 0.1g 3 N 4 join 2×10 -4 The ratio of mol of iron-citric acid complex will be g-C 3 N 4 Mix with iron-citric acid complex, stir for 12 hours, and dry at 80°C to obtain a solid supramolecular photocatalyst.

Embodiment 3

[0038] 1. Dissolve ferric sulfate heptahydrate in ultrapure water to obtain 20mM ferric sulfate solution;

[0039] 2. After adjusting the pH of the ferric chloride solution to be not greater than 1, add phosphotungstic acid to it according to the stoichiometric ratio to obtain an iron-phosphotungstic acid complex;

[0040]3. According to the g-C per 0.1g 3 N 4 join 1×10 -3 The ratio of mol of iron-phosphotungstic acid complex will be g-C 3 N 4 Mix with iron-phosphotungstic acid complex, stir for 12 hours, and then dry at 80°C to obtain a solid supramolecular photocatalyst. Such as figure 1 shown. Lamellar large size is g-C 3 N 4 , the iron-phosphotungstic acid complex adsorbed on g-C 3 N 4 On the surface, iron particles cannot be seen in the transmission electron microscope, indicating that iron exists in the state of complexes.

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Abstract

The invention discloses a solid super-molecular photocatalyst integrating Fenton effect and photocatalysis as well as preparation methods and application thereof. A first type of the photocatalyst is a compound of an iron complex and g-C3N4, and is prepared by the following steps: dissolving a water-soluble iron salt into ultrapure water to obtain an iron salt solution; adjusting the pH value of the iron salt solution to be not more than 1, and adding a ligand precursor into the iron salt solution to obtain an iron complex; and adding g-C3N4 into the iron complex, stirring, and drying to obtain the solid super-molecular photocatalyst. A second type of the photocatalyst is a compound of ferrocene and g-C3N4 and is prepared by the following steps: dissolving ferrocene into hot water, adding g-C3N4 powder when the mixture is hot, stirring fully, and drying to obtain a ferrocene / g-C3N4 compound photocatalyst. A third type of the photocatalyst is a compound of chlorhematin and g-C3N4, and the preparation method is similar to that of ferrocene / g-C3N4. The solid super-molecular photocatalyst has the following beneficial effects: the iron source is stable, the photocatalysis condition is not influenced by pH, and the solid super-molecular photocatalyst responds to visible light and is high in reaction speed.

Description

technical field [0001] The invention relates to a solid supramolecular photocatalyst integrating Fenton effect and photocatalysis, a preparation method and application thereof, and belongs to the technical field of photocatalysis. Background technique [0002] With the development of human beings, energy and environment have gradually become two major themes facing the world today. Excessive consumption of fossil energy has not only increased people's concerns about future energy, but also increased the pressure of a large amount of pollution on the environment. Therefore, how to use new energy to solve environmental problems has become a major survival issue to be solved urgently on the road of human development in the future. People have been familiar with solar energy since ancient times. Today, using clean, harmless and powerful solar energy to solve people's new energy crisis and environmental problems seems to be the best choice for all scientific researchers. Among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22A62D3/17A62D101/28
Inventor 刘景海段莉梅李鑫
Owner INNER MONGOLIA UNIV FOR THE NATITIES
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