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A kind of method of Schiff alkali copper complex catalyzing hydrogen peroxide to degrade triclosan

A Schiff base copper, oxidative degradation technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low catalytic efficiency and reaction temperature, Achieve the effect of good catalytic degradation characteristics and good application value

Active Publication Date: 2021-11-02
HENAN NORMAL UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These studies still have problems such as low catalytic efficiency, high reaction temperature or visible light excitation, etc. Exploring and synthesizing Schiff base metal complex catalysts with high catalytic efficiency in aqueous solution is still the focus of research in this field

Method used

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  • A kind of method of Schiff alkali copper complex catalyzing hydrogen peroxide to degrade triclosan
  • A kind of method of Schiff alkali copper complex catalyzing hydrogen peroxide to degrade triclosan
  • A kind of method of Schiff alkali copper complex catalyzing hydrogen peroxide to degrade triclosan

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Embodiment

[0031] 1 Materials and methods

[0032] 1.1 Reagents and instruments

[0033] 5-nitrosalicylaldehyde, N-phenyl-o-phenylenediamine, absolute ethanol, copper chloride dihydrate, and 30 wt% hydrogen peroxide are analytically pure (AR), and TCS is chromatographically pure (HPLC).

[0034] Aglient 1200 high-performance liquid chromatography (Aglient, USA); CHN-O-Rapid elemental analyzer (Heraeus, Germany); Cary 50 ultraviolet spectrophotometer (Varian, USA); NEXUS 870 infrared spectrometer (KBr tablet, Nicolet USA). company); PHI5000VersaProbe electronic energy spectrometer (UlVAC-PHI company in Japan); SGW X-4 micro melting point instrument (Shanghai Shenguang company); HJ-3 digital constant temperature magnetic stirrer (Jiangsu Jintan Jerrell company), etc. .

[0035] 1.2 Experimental method

[0036] 1.2.1 Synthesis of Schiff bases

[0037] Weigh 1.670g (0.01mol) of 5-nitrosalicylaldehyde and dissolve it in 60mL of absolute ethanol, and heat it in a water bath at 60°C to obta...

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Abstract

The invention discloses a method for oxidizing and degrading triclosan by hydrogen peroxide catalyzed by a Schiff base copper complex, and belongs to the technical field of degradation treatment of organic wastewater. The main points of the technical scheme of the present invention are: add the phosphate buffer solution of pH=7.6, the dimethylformamide solution of the Schiff base copper complex and the triclosan wastewater solution in sequence in the reaction vessel, then add hydrogen peroxide to start the reaction, and realize the reaction in Hydrogen peroxide oxidative degradation of triclosan catalyzed by Schiff base copper complexes in aqueous phase system and near neutral conditions. The Schiff base copper complex prepared by the present invention can realize the oxidative degradation of TCS under aqueous phase conditions, and the oxidation can occur under near-neutral conditions, avoiding the difficult problem that the Fenton reaction needs to be carried out under acidic conditions. It has good potential application value in the wastewater treatment of etc.

Description

technical field [0001] The invention belongs to the technical field of degradation treatment of organic wastewater, and in particular relates to a method for oxidizing and degrading triclosan by hydrogen peroxide catalyzed by a Schiff base copper complex. Background technique [0002] Triclosan (TCS) is a broad-spectrum antibacterial agent, which belongs to the typical environmental pollutants of pharmaceuticals and personal care products (PPCPs). Bioaccumulation. In recent years, due to the mass production and use of TCS-containing consumer products, TCS has been continuously detected in environmental media, aquatic animals and breast milk. For example, Zhao et al. investigated the distribution of TCS in the waters of the Yangtze River, Yellow River, Liao River, Pearl River, and Hai River. It was found that the TCS content in the surface water of five rivers was as high as 478ng L -1 , the content in the sediment is 1329ng·g -1 . TCS is also detected in aquatic organism...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72B01J31/22C02F101/36
Inventor 彭建彪邵帅李静华史嘉璐刘海津高士祥
Owner HENAN NORMAL UNIV
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