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Method for treating antibiotic wastewater by utilizing visible-light response semiconductor heterojunction hybrid photoelectric catalytic material electrode

A technology of antibiotic wastewater and photoelectric catalysis, applied in chemical instruments and methods, water treatment of special compounds, light water/sewage treatment, etc., can solve the problems of limiting photoelectrode visible light response, charge separation, low dispersion, etc., and achieve high use Value and application prospect, improvement of dispersibility, effect of improvement of degradation efficiency

Pending Publication Date: 2022-04-22
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the low dispersion of MOFs on nanotubes and weak bond contacts with semiconductors also limit the visible light response and charge separation of photoelectrodes.

Method used

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  • Method for treating antibiotic wastewater by utilizing visible-light response semiconductor heterojunction hybrid photoelectric catalytic material electrode
  • Method for treating antibiotic wastewater by utilizing visible-light response semiconductor heterojunction hybrid photoelectric catalytic material electrode
  • Method for treating antibiotic wastewater by utilizing visible-light response semiconductor heterojunction hybrid photoelectric catalytic material electrode

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Experimental program
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Effect test

Embodiment 1

[0045] A method for treating antibiotic wastewater by using a visible-light-responsive semiconductor heterojunction hybrid photocatalytic material electrode, specifically, using a visible-light-responsive semiconductor heterojunction hybrid photocatalytic material electrode as an anode to treat tetracycline in wastewater through photocatalytic reaction, Include the following steps:

[0046] With material electrode (TiO 2 -NTs, Ti 3+ -TiO 2 -NTs, Fe-Ti 3+ -TiO 2 -NTs, MIL-100(Fe) / Ti 3+ -TiO 2 -NTs, Ar-Fe 2 o 3 / Ti 3+ -TiO 2 -NTs) as anode, platinum plate electrode as counter electrode, Ag / AgCl electrode as reference electrode, put into 60mL tetracycline waste water containing sodium sulfate (the concentration of sodium sulfate in this waste water is 25mmol / L, the concentration of tetracycline is 20mg / L , pH=5.3) for 90 minutes, wherein the photocatalytic reaction was carried out under a visible light source with a voltage of 2.0V, and the treatment of tetracycline was c...

Embodiment 2

[0080] A method for treating antibiotic wastewater by using a visible-light-responsive semiconductor heterojunction hybrid photocatalytic material electrode, specifically, using a visible-light-responsive semiconductor heterojunction hybrid photocatalytic material electrode as an anode to treat tetracycline in wastewater through photocatalytic reaction, Include the following steps:

[0081] Response semiconductor heterojunction hybrid photocatalytic material electrode (Ar-Fe 2 o 3 / Ti 3+ -TiO 2 -NTs) as anode, platinum sheet as counter electrode, Ag / AgCl electrode as reference electrode, put into 60mL tetracycline wastewater containing sodium sulfate (the concentration of sodium sulfate in this wastewater is 0.5mol / L, and the concentration of tetracycline is 20mg / L , pH=5.3), the photoelectric catalytic reaction was carried out under different conditions to complete the treatment of tetracycline.

[0082] Condition 1: Apply visible light source and 2V voltage for 1.5h.

...

Embodiment 3

[0090] A method for treating antibiotic wastewater by using a visible-light-responsive semiconductor heterojunction hybrid photocatalytic material electrode, specifically, using a visible-light-responsive semiconductor heterojunction hybrid photocatalytic material electrode as an anode to treat tetracycline in wastewater through photocatalytic reaction, Include the following steps:

[0091] Responsive semiconductor heterojunction hybrid photoelectrocatalytic material electrode (Ar-Fe 2 o 3 / Ti 3+ -TiO 2 -NTs) as anode, platinum sheet as counter electrode, Ag / AgCl electrode as reference electrode, put into 60mL tetracycline wastewater containing sodium sulfate (the concentration of sodium sulfate in this wastewater is 0.5mol / L, and the concentration of tetracycline is 20mg / L , pH=5.3), the photocatalytic reaction was carried out at voltages of 1.5V, 2.0V, and 2.5V for 1.5h, wherein the photocatalytic reaction was carried out under a visible light source to complete the treat...

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Abstract

The invention discloses a method for treating antibiotic wastewater by using a visible-light response semiconductor heterojunction hybrid photoelectrocatalysis material electrode, which is characterized in that the visible-light response semiconductor heterojunction hybrid photoelectrocatalysis material electrode is used as an anode to treat antibiotics in wastewater through photoelectrocatalysis reaction. Wherein the visible-light response semiconductor heterojunction hybrid photoelectric catalytic material electrode is obtained by taking a titanium dioxide electrode plate as an electrode substrate through electrochemical reduction self-doping, pulse deposition, metal organic framework (MOFs) self-assembly, engraving reduction and other processes. According to the method, the problem that the mass transfer rate between the MOFs and the substrate is blocked is solved, and the dispersity of the MOFs in the substrate is improved, so that the MOFs have the characteristics of good catalytic effect, high light utilization capacity and the like, and also have the advantages of high recycling speed, high practicability, no secondary pollution and the like; the method is a treatment method which can be widely adopted and can effectively remove antibiotics in the water body, and has very high use value and application prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of photocatalytic electrode materials, and in particular relates to a method for treating antibiotic wastewater by using a visible light-responsive semiconductor heterojunction hybrid photocatalytic material electrode. Background technique [0002] Recently, the demand for MOFs to participate in various chemical reactions in a non-powder state is imminent. For example, the airgel state participates in adsorption, and the biochar-loaded state participates in persulfate activation. The above strategies have effectively avoided the separation and recovery difficulties of traditional powder catalysts, but at the same time introduced a variety of unknown matrices, and it is impossible to determine a An efficient synthetic technique to precisely control the dispersion of MOFs in them. At the same time, in view of the drawbacks of easy recombination of electrons and holes in MOFs in the field of pho...

Claims

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Application Information

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IPC IPC(8): C02F9/12B01J23/745B01J21/06B01J37/34B01J37/08C02F1/30C02F1/461C02F101/38C02F101/34
CPCC02F1/30C02F1/46109B01J23/745B01J21/063B01J37/348B01J37/086C02F2001/46138C02F2001/46152C02F2001/46171C02F2305/10C02F2101/38C02F2101/34B01J35/39B01J35/23B01J35/33
Inventor 熊炜平贾美莹刘淇杨朝晖
Owner HUNAN UNIV
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