Novel Z-type sound catalyst capable of degrading antibiotic wastewater as well as preparation method and application thereof

A technology of antibiotic wastewater and catalyst, applied in the field of acoustic catalysis, can solve the problem of ineffective use of sonoluminescence ultraviolet light and other problems

Active Publication Date: 2018-01-19
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve broadband semiconductor NiGa 2 o 4 The ultraviolet light problem in sonoluminescence cannot be effectively utilized, and the present invention provides an up-conversion luminescent material Er 3+ :Y 3 Al 5 o 12 Combination method with semiconductor catalyst

Method used

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  • Novel Z-type sound catalyst capable of degrading antibiotic wastewater as well as preparation method and application thereof
  • Novel Z-type sound catalyst capable of degrading antibiotic wastewater as well as preparation method and application thereof
  • Novel Z-type sound catalyst capable of degrading antibiotic wastewater as well as preparation method and application thereof

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Experimental program
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Embodiment 1

[0038] Embodiment 1 Novel Z type acoustic catalyst Er 3+ :Y 3 Al 5 o 12 @Ni(Fe 0.05 Ga 0.95 ) 2 o 4 -Au-BiVO 4

[0039] (1) Preparation method

[0040] 1. Preparation of Er 3+ :Y 3 Al 5 o 12 nano powder

[0041] 2.7281g Er 2 o 3 (99.99%), 0.0464g Y 2 o 3 (99.99%) powder was dissolved in concentrated nitric acid (65.00%) and magnetically heated and stirred until colorless and transparent to obtain a rare earth ion solution. Weigh 12.6208g Al(NO 3 ) 3 9H 2 O (99.99%) was dissolved in distilled water, stirred with a glass rod at room temperature and slowly added to the rare earth ion solution. Use citric acid as a chelating agent and co-solvent, in molar ratio, citric acid: rare earth ion = 3:1, first weigh citric acid and dissolve it with distilled water, then add it to the above mixed solution, heat and stir at 50-60°C, when the solution Stop when thick. No precipitate formed during this process and a foamy viscous solution was finally obtained. Put the ...

Embodiment 2

[0064] Embodiment 2 Novel Z type acoustic catalyst Er 3+ :Y 3 al 5 o 12 @Ni(Fe 0.05 Ga 0.95 ) 2 o 4 -Au-BiVO 4 Application in sonocatalytic degradation of sulfonamide

[0065] (1) Acoustic catalyst Er 3+ :Y 3 al 5 o 12 @Ni(Fe 0.05 Ga 0.95 ) 2 o 4 -Au-BiVO 4 The ultraviolet absorption spectra of different time periods of the sulfonamide solution in the presence of

[0066] Experimental conditions: 200mg Er 3+ :Y 3 al 5 o 12 @Ni(Fe 0.05 Ga 0.95 ) 2 o 4 -Au-BiVO 4 And 200mL of 10.0mg / L sulfonamide (SA) aqueous solution. At a temperature of 25°C and a pressure of 101325Pa, 50W, 40KHz ultrasonic irradiation was used for 300min with an interval of 50min.

[0067] The result is as Figure 4a shown. In general, when the compound has double bonds or conjugated double bonds, π→π* electron transfer may occur under the excitation of matching ultraviolet light. Meanwhile, n→π* electron transfer may occur when some heteroatoms with lone pairs of electrons exist...

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Abstract

The invention relates to a novel Z-type sound catalyst capable of degrading antibiotic wastewater as well as a preparation method and application thereof. According to the preparation method, a novelZ-shaped structural nano composite sound catalyst Er<3+>:Y3Al5O12@ Ni(Fe0.05Ga0.95)2O4-Au-BiVO4 is prepared with a simple sol-gel method and hydrothermal and high-temperature calcining methods. A result shows that according to the Er<3+>:Y3Al5O12@ Ni(Fe0.05Ga0.95)2O4-Au-BiVO4 disclosed by the invention, as a cyclic redox circulating system can be formed after Ni(Fe0.05Ga0.95)2O4 and BiVO4 are combined, separation of e<-> and h<+> is promoted, and the sound catalytic degrading capacity of the system is obviously improved. The novel efficient sound catalyst disclosed by the invention can be widely applied to the environmental protection fields of water purification, wastewater treatment and the like, and has a wide prospect.

Description

technical field [0001] The invention belongs to the field of sonocatalysis, in particular to a sonocatalyst Er with a Z-shaped structure 3+ :Y 3 Al 5 o 12 @Ni(Fe 0.05 Ga 0.95 ) 2 o 4 -Au-BiVO 4 Synthesis of and its application in the sonocatalytic degradation of antibiotic wastewater. Background technique [0002] In recent years, the abuse of antibiotics by humans has produced a large amount of wastewater containing antibiotics. The residual antibiotics in this type of wastewater have accumulated in the ecological environment for a long time, which not only has teratogenic and carcinogenic properties, but also leads to the enhancement of drug resistance of pathogenic microorganisms. Serious harm to ecological balance and human health. Therefore, the treatment of antibiotic wastewater is imminent. Residual antibiotics in wastewater have high biological toxicity, large pH fluctuations, deep color, and heavy odor, which bring great difficulties to wastewater treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C02F1/30C02F1/32C02F1/36C02F1/72C02F1/74C02F103/34C02F101/30
Inventor 王君王国伟张朝红宋有涛李思怡马雪乔静
Owner LIAONING UNIVERSITY
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