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Fe/Co-Nx/TiO2 photocatalyst and preparation method and application thereof

A photocatalyst, co-nx technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as photocatalytic performance that few people study, and achieve easy-to-obtain raw materials and high degradation Ability, low toxicity effect

Active Publication Date: 2018-01-12
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since Yang et al. prepared anatase TiO with 47% {001} facets 2 After that, for TiO 2 The research on (001) is increasing day by day, but most of the studies are only on the control of the proportion of {001} crystal plane, that is, increasing the proportion of its {001} crystal plane, and few people have studied its photocatalytic performance after modification.

Method used

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  • Fe/Co-Nx/TiO2 photocatalyst and preparation method and application thereof
  • Fe/Co-Nx/TiO2 photocatalyst and preparation method and application thereof
  • Fe/Co-Nx/TiO2 photocatalyst and preparation method and application thereof

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Embodiment 1

[0032] Fe / Co-Nx / TiO of the present invention 2 The preparation method of photocatalyst specifically comprises the following steps:

[0033] Step 1, preparation of Fe / Co-Nx nanoparticles: Weigh 0.4g ferrous sulfate heptahydrate and 0.6g sulfonated cobalt phthalocyanine and place it in 4ml methanol for ultrasonication for 10min, place the resulting mixture in a tube furnace, and place the mixture under N 2 Calcined for 2 hours under the protection of the atmosphere, the calcined temperature is 300 ℃, and Fe / CoPcS is obtained after grinding;

[0034] Step 2: Take 25mL of butyl titanate, 5mL of hydrofluoric acid and 5mL of deionized water respectively, place them in a polytetrafluoroethylene container, mix and stir evenly, and then react in the reactor at 180°C for 24h; centrifuge the obtained product Finally, wash with deionized water and absolute ethanol three times, dry, and grind to obtain TiO 2 (001) nanosheets;

[0035] Step 3, weigh 50mgFe / CoPcS and 200mgTiO 2 (001) Nan...

Embodiment 2

[0037] Fe / Co-Nx / TiO of the present invention 2 The preparation method of photocatalyst specifically comprises the following steps:

[0038] Step 1, preparation of Fe / Co-Nx nanoparticles: Weigh 0.4g ferrous sulfate heptahydrate and 0.6g sulfonated cobalt phthalocyanine and place it in 4ml methanol for ultrasonication for 10min, place the resulting mixture in a tube furnace, and place the mixture under N 2 Calcined for 2 hours under the protection of the atmosphere, the calcined temperature is 300 ℃, and Fe / CoPcS is obtained after grinding;

[0039] Step 2: Take 25mL of butyl titanate, 5mL of hydrofluoric acid and 5mL of deionized water respectively, place them in a polytetrafluoroethylene container, mix and stir evenly, and then react in the reactor at 170°C for 20h; centrifuge the obtained product Finally, wash with deionized water and absolute ethanol three times, dry, and grind to obtain TiO 2 (001) nanosheets;

[0040] Step 3, weigh 50mgFe / CoPcS and 200mgTiO 2 (001) Nanos...

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Abstract

The invention discloses a Fe / Co-Nx / TiO2 photocatalyst. The photocatalyst contains a Fe / Co-Nx chelate on a TiO2 {001} crystal plane. The invention further discloses a preparation method of the Fe / Co-Nx / TiO2 photocatalyst. The preparation method comprises the following step of performing a pyrolysis reaction on the Fe / CoPcS and TiO2 nanosheets at high temperature according to a required mass ratio to obtain a Fe / Co-Nx / TiO2 nanomaterial containing the Fe / Co-Nx chelate on the TiO2 {001} crystal plane. The invention finally discloses application of the Fe / Co-Nx / TiO2 photocatalyst to catalytic degradation of sulfathiazole in water. The modified Fe / Co-Nx / TiO2 photocatalyst has a very high capability of degrading the sulfathiazole in water in both visible light and ultraviolet light; meanwhile, adegraded product has lower toxicity.

Description

technical field [0001] The present invention relates to a kind of Fe / Co-Nx / TiO 2 Photocatalysts, also relating to the aforementioned Fe / Co-Nx / TiO 2 The preparation method and application of photocatalyst belong to the technical field of photocatalyst. Background technique [0002] In recent decades, sulfonamides have gradually become one of the most widely used antibacterial agents in human and animal medicine. Researchers have detected the presence of such substances in surface water, groundwater and rivers. However, because such pollutants are not only persistent but also easily destroy the DNA and nucleus of bacteria, the biodegradation method is greatly limited. In recent years, Fenton's reagent is considered to be an effective catalyst for the degradation of sulfonamides, but due to its 2 o 2 The requirement of the dosage leads to the increase of its cost and cannot be put into practical application. Although TiO 2 It can degrade antibiotics well under ultraviole...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/04B01J37/08B01J37/10B01J37/34C02F1/30C02F1/32C02F1/72C02F101/34C02F101/38
Inventor 杨汉培高照朱鸿宇郭润强张睿宸柴斯琦查道平吴俊明毛静涛
Owner HOHAI UNIV
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