Fe-doped g-C3N4 photocatalyst as well as preparation method and application thereof

A photocatalyst, g-c3n4 technology, applied in the field of photocatalytic materials, can solve the problems of reducing the number of active species and reducing degradation efficiency, and achieve the effects of enhanced light absorption capacity, reduced recombination rate, and good economic benefits

Pending Publication Date: 2021-09-17
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with acidic and neutral environments, the degradation efficiency of photo-Fenton reaction is significantly lower in alkaline environment, which is due to Fe 2+ It is easy to react with hydroxide under alkaline conditions, resulting in hydroxide precipitation, resulting in a decrease in the number of active species participating in the catalytic reaction, which is also the limitation of the practical application of ordinary Fe-containing catalysts

Method used

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  • Fe-doped g-C3N4 photocatalyst as well as preparation method and application thereof
  • Fe-doped g-C3N4 photocatalyst as well as preparation method and application thereof
  • Fe-doped g-C3N4 photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1, Fe-doped g-C 3 N 4 Preparation of Photocatalyst FCN-0.1

[0030] Put 0.1 g of pig blood and 10 g of melamine in a beaker and mix them evenly at room temperature, then pour them into a crucible, put them in a muffle furnace, heat them up to 550°C at a heating rate of 5°C / min, and keep them warm for 2 h. After the muffle furnace was cooled to room temperature, the obtained sample was ground in an agate mortar and collected for later use. The sample was marked as FCN-0.1.

Embodiment 2

[0031] Embodiment 2, Fe-doped g-C 3 N 4 Preparation of photocatalyst FCN-0.3

[0032] Put 0.3 g of pig blood and 10 g of melamine into a beaker and mix them evenly at room temperature, then pour them into a crucible, put them in a muffle furnace, heat them to 550°C at a heating rate of 5°C / min, and keep them warm for 2 h. After the muffle furnace was cooled to room temperature, the obtained sample was ground in an agate mortar and collected for later use. The sample was marked as FCN-0.3.

Embodiment 3

[0033] Example 3, Fe-doped g-C 3 N4 Preparation of Photocatalyst FCN-0.5

[0034] Put 0.5 g of pig blood and 10 g of melamine into a beaker and mix them evenly at room temperature, then pour them into a crucible, put them in a muffle furnace, heat them up to 550°C at a heating rate of 5°C / min, and keep them warm for 2 h. After the muffle furnace was cooled to room temperature, the obtained sample was ground in an agate mortar and collected for later use. The sample was marked as FCN-0.5.

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Abstract

The invention discloses a Fe-doped g-C3N4 photocatalyst and a preparation method and application thereof. The Fe-doped g-C3N4 photocatalyst is obtained from pig blood and melamine through a one-step thermal polymerization method, and the obtained product can be combined with photo catalysis and a Fenton oxidation reaction process under the visible light condition to conduct combined degradation of pollutants; and the photocatalyst prepared in the invention has a stable Fe-N bond in the structure, so that the photocatalyst does not easily react with hydroxide in an alkaline environment to form an iron-based hydroxide precipitate, the defect that the activity of a common Fe-doped photocatalyst is reduced in a Fenton process under an alkaline condition is overcome, and therefore, the catalyst can maintain good degradation activity in a wide pH range.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, in particular to an Fe-doped g-C 3 N 4 Photocatalyst and its preparation method and its application combined with Fenton oxidation technology. Background technique [0002] Photocatalytic oxidation technology, as a new type of wastewater treatment technology with environmental protection, low consumption, simple operation, strong oxidation ability, fast reaction rate and wide application range, has shown great application potential in the treatment of antibiotic wastewater. Semiconductor photocatalysts can generate electrons and holes under the radiation of sunlight, and further generate hydroxyl and superoxide radicals with strong redox ability, which can catalyze the degradation of antibiotic molecules in water and finally achieve the purpose of purifying water. [0003] Graphite-like carbon nitride (abbreviated as g-C 3 N 4 ), a typical metal-free semiconductor photocataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/08C02F1/30C02F1/72C02F101/38C02F101/34
CPCB01J27/24B01J35/004B01J37/082C02F1/30C02F1/725C02F2305/10C02F2305/026C02F2101/38C02F2101/34
Inventor 郭峰施伟龙孙浩然
Owner JIANGSU UNIV OF SCI & TECH
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