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Coralline TiOF2 photocatalyst and preparation method and application thereof

A photocatalyst, coral-like technology, applied in the field of photocatalyst, can solve the problems of unfavorable pollutant active sites, poor adsorption performance, etc., and achieve good catalytic degradation performance

Active Publication Date: 2021-07-16
国中创业(北京)环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, cubic TiOF 2 The adsorption performance of tetracycline hydrochloride and dyes is poor, which is not conducive to the pollutants reaching the active sites on the surface of the photocatalyst

Method used

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  • Coralline TiOF2 photocatalyst and preparation method and application thereof
  • Coralline TiOF2 photocatalyst and preparation method and application thereof
  • Coralline TiOF2 photocatalyst and preparation method and application thereof

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Embodiment 1～ Embodiment 5

[0033] The coral-shaped TiOF provided by this embodiment 2 The preparation method of photocatalyst comprises the following steps:

[0034] 1) Preparation of cubic TiOF by one-step hydrothermal synthesis 2 Precursor, spare;

[0035] 1.1) glacial acetic acid CH 3 Add COOH and hydrofluoric acid HF into the polytetrafluoroethylene liner according to the volume ratio, and stir at 25°C for 5 minutes to obtain a mixed solution A;

[0036] 1.2) Add tetrabutyl titanate TBOT to solution A at a rate of two drops per second, stir at 25°C for 1 hour to obtain a white suspension; tetrabutyl titanate TBOT and glacial acetic acid CH 3 COOH volume ratio is 1:2;

[0037] 1.3) Put the polytetrafluoroethylene liner in a high-pressure reactor, and the product obtained by the reaction is cooled to 25°C, washed with ethanol and ultrapure water, and dried to obtain a cubic TiOF 2 Precursor;

[0038] 2) Synthesis of coral-like TiOF by alkaline hydrothermal method 2 ;

[0039] Specifically, in ...

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Abstract

The invention belongs to the technical field of photocatalysts, and relates to a coralline TiOF2 photocatalyst and a preparation method and application thereof. The method comprises the following steps of 1) preparing a cubic TiOF2 precursor, (2) dispersing the prepared cubic TiOF2 precursor in NaOH in a polytetrafluoroethylene container, and stirring, placing the container in a high-pressure reaction kettle for reaction, cooling to room temperature, and washing with HCl until the pH value of the washing filtrate is less than 7, and 3) continuously washing with absolute ethyl alcohol and water until the pH value of the washing filtrate is 7 (6.8-7.2), and drying to obtain the coralline flower-shaped H2Ti3O7. Cubic TiOF2 is used as a precursor, sodium hydroxide is used as a stripping agent, and the coralline TiOF2 photocatalyst is prepared through an alkaline hydrothermal method; the catalyst is coralline-shaped in morphology, excellent in photocatalytic performance and good in catalytic degradation performance on tetracycline hydrochloride and rhodamine B.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts and relates to a coral-shaped TiOF 2 Photocatalyst and its preparation method and application. Background technique [0002] Tetracycline hydrochloride is one of the most widely used antibiotics in my country and is widely used in the pharmaceutical industry, intensive agriculture and aquaculture. However, since the naphthol ring in the tetracycline structure cannot be completely metabolized by organisms, more than 85% of antibiotics can be extracted and discharged into the environment, threatening the ecosystem and human health. In addition, rhodamine B is a widely used organic dye, but it has high pollution concentration, high chroma, and poor biodegradability, so it is difficult to deal with it by traditional biochemical and physical chemical methods. In the past ten years, photocatalytic oxidation technology has been widely used to eliminate various organic pollutants. Photocatalysts...

Claims

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Application Information

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IPC IPC(8): B01J27/135C02F1/30C01G23/00
CPCB01J27/135C02F1/30C01G23/00C02F2305/10C02F2101/38B01J35/39Y02W10/37
Inventor 侯晨涛李怡洁刘华林王静李月瑶王柳菁张敏敏张颖张懿心
Owner 国中创业(北京)环保科技有限公司
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