Method for catalytic removal of antibiotic by silver phosphate/bismuth sulfide/bismuth oxide double-Z-type photocatalyst

A technology of photocatalyst and bismuth oxide, which is applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of fast photogenerated electron-hole recombination, low light utilization efficiency, photocatalytic Poor performance and other problems, to achieve efficient degradation effect

Active Publication Date: 2019-03-19
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in previous studies, the photocatalysts used for photocatalytic degradation still have the following problems: low light utilization efficiency, fast photogenerated electron-hole recombination, poor photocatalytic performance, and poor stability. Greatly limit the wide application of photocatalytic degradation

Method used

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  • Method for catalytic removal of antibiotic by silver phosphate/bismuth sulfide/bismuth oxide double-Z-type photocatalyst
  • Method for catalytic removal of antibiotic by silver phosphate/bismuth sulfide/bismuth oxide double-Z-type photocatalyst
  • Method for catalytic removal of antibiotic by silver phosphate/bismuth sulfide/bismuth oxide double-Z-type photocatalyst

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Effect test

Embodiment 1

[0045] A method for using silver phosphate silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst to catalyze the removal of antibiotics, specifically using silver phosphate silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst to catalyze the removal of sulfonamide in water pyrimidine, comprising the steps of:

[0046] Take silver phosphate / bismuth sulfide / bismuth oxide double Z photocatalyst (ABB-1, ABB-2, ABB-3, ABB-4), bismuth oxide (BO), bismuth sulfide (BS) and silver phosphate (AP), Take 100 mg each, add them to 100 mL of sulfamethazine (SAZ) solution with a concentration of 10 mg / L, mix well, and adsorb sulfamethazine at 30 °C and 600 rpm, and reach the adsorption after 30 min. Equilibrium; the mixed solution that reached adsorption equilibrium was placed under a xenon lamp (λ > 420 nm, power 50 W), and the photocatalytic reaction was carried out at 30 °C and 600 rpm for 90 min to complete the treatment of SAZ.

[0047] The sul...

Embodiment 2

[0074] A method of using silver phosphate silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst to catalyze the removal of antibiotics, specifically using silver phosphate silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst to catalyze the removal of chlorine in water Xacillin sodium, comprising the following steps:

[0075]Take the silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst (ABB-1, ABB-2, ABB-3, ABB-4) prepared in Example 1, bismuth oxide (BO), bismuth sulfide (BS) and silver phosphate (AP), 100 mg each, were added to 100 mL of cloxacillin sodium (CLX) solution with a concentration of 10 mg / L, mixed evenly, and the cloxacillin Sodium was adsorbed, and the adsorption equilibrium was reached after 30 min; the mixed solution that reached the adsorption equilibrium was placed under a xenon lamp (λ > 420 nm, power 50 W), and the photocatalytic reaction was carried out at 30 °C and 600 rpm for 90 min , com...

Embodiment 3

[0079] Investigating the stability of silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst in removing antibiotics from water

[0080] The first group: investigate the stability of silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst to catalyze the removal of sulfamethazine in water, including the following steps:

[0081] (1) Take 100 mg of the silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalyst (ABB-3) prepared in Example 1 and add it to 100 mL of sulfamethazine (SAZ) solution with a concentration of 10 mg / L , mixed evenly, and adsorbed SAZ at 30°C and 600 rpm, and reached adsorption equilibrium after 30 min; put the mixed solution that reached adsorption equilibrium under a xenon lamp (λ > 420 nm, power 50 W), and The photocatalytic reaction was carried out at 30 °C and 600 rpm for 60 min to complete the treatment of SAZ.

[0082] (2) After the treatment in step (1) is completed, the mixture obtained after...

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Abstract

The invention discloses a method for catalytic removal of antibiotic by a silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst. According to the method, the antibiotic is treatedby the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst, the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst takes bismuth oxide as a carrier, andthe surface of the bismuth oxide is modified by bismuth sulfide and silver phosphate. According to the method, photocatalytic degradation is implemented by the aid of the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst, different types of antibiotic can be effectively removed, and the method has the advantages of simple process, low processing cost, good removing effect, high safety, no secondary pollution and the like. Particularly, the method can efficiently remove antibiotic in water and has excellent practical application prospects.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to a method for removing antibiotics, in particular to a method for catalyzing and removing antibiotics in water bodies by using silver phosphate / bismuth sulfide / bismuth oxide double Z-type photocatalysts. Background technique [0002] With the development and progress of society, antibiotics have been widely used. Their excessive use and incomplete metabolism make antibiotics often detected in natural water, sewage, soil and other environmental media. These antibiotics that have not been metabolized are likely to be It affects the development of biological cells, the circulation of the ecosystem and promotes the reproduction of drug-resistant pathogenic bacteria, thus adversely affecting the ecological environment and human health. At present, the commonly used methods for removing antibiotics in water environment at home and abroad include biological methods, physicochemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/186C02F1/30C02F101/38C02F101/36C02F101/34
CPCB01J27/186B01J35/004C02F1/30C02F2101/34C02F2101/36C02F2101/38C02F2101/40C02F2305/023C02F2305/10
Inventor 刘智峰邵彬彬梁清华曾光明刘洋程莹黄靖潘园章薇刘小娟
Owner HUNAN UNIV
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