Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of BiFeO3/Bi25FeO40 heterostructure catalyst

A technology of heterostructure and catalyst is applied in the application field of degrading antibiotics, which can solve the problems of complex synthesis process, easy generation of impurities and high synthesis temperature, and achieves the effects of broad application prospects, improved efficiency and simple preparation method.

Active Publication Date: 2019-09-13
CHANGCHUN INST OF TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]Composite for existing BiFeO3 / Bi25FeO40 heterostructure Catalyst synthesis process is complex and cumbersome, easy to produce impurities, and the synthesis temperature is high. The present invention provides a one-step synthesis of BiFeO3 / Bi25FeO by hydrothermal method. The method of >40heterostructure composite catalyst has a simple synthesis process and makes BiFeO3 / Bi25FeO40heterogeneous Structural catalysts, as dual catalysts, degrade antibiotics under the synergistic effect of photocatalytic reaction and advanced oxidation reaction, which provides a new idea for the efficient degradation of antibiotics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of BiFeO3/Bi25FeO40 heterostructure catalyst
  • Preparation method and application of BiFeO3/Bi25FeO40 heterostructure catalyst
  • Preparation method and application of BiFeO3/Bi25FeO40 heterostructure catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. BiFeO 3 / Bi 25 FeO 40 Preparation of heterostructure catalysts

Embodiment 1-1

[0037] Take by weighing 2.1g bismuth nitrate pentahydrate and be dissolved in 150ml water, add ferric nitrate nonahydrate after fully stirring, potassium hydroxide is as mineralizer, wherein bismuth nitrate pentahydrate: ferric nitrate nonahydrate: the mass ratio of potassium hydroxide is 1: 0.7:8.1, after stirring, put the mixed solution into the reaction kettle with a filling degree of 80%, raise the temperature to 180°C for 6 hours, wash the product thoroughly with deionized water and ethanol until the pH value is 7, and dry it at 60°C for 5 hours. A brown sample is obtained, which is BiFeO 3 / Bi 25 FeO 40 heterostructure catalysts.

[0038] figure 1 for BiFeO 3 、 Bi 25 FeO 40 、BiFeO 3 / Bi 25 FeO 40 XRD spectrum of the heterostructure. According to the standard spectrum (BiFeO 3 (PDF#74-2016) and Bi 25 FeO 40 (PDF#46-0416)) comparison shows that the prepared BiFeO 3 / Bi 25 FeO 40 The composite contains only BiFeO 3 and Bi 25 FeO 40 Two phases, no other im...

Embodiment 1-2

[0041] Take by weighing 2.1g bismuth nitrate pentahydrate and be dissolved in 150ml water, add ferric nitrate nonahydrate after fully stirring, potassium hydroxide is as mineralizer, wherein bismuth nitrate pentahydrate: ferric nitrate nonahydrate: the mass ratio of potassium hydroxide is 1: 0.4:2.8, after stirring, put the mixed solution into the reaction kettle with a filling degree of 60%, raise the temperature to 160°C for 5 hours, wash the product thoroughly with deionized water and ethanol until the pH value is 7, and dry it at 60°C for 5 hours. A brown sample is obtained, which is BiFeO 3 / Bi 25 FeO 40 heterostructure catalysts.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

Belonging to the technical field of sewage treatment, the invention discloses a preparation method and application of a BiFeO3 / Bi25FeO40 heterostructure catalyst. The BiFeO3 / Bi25FeO40 heterostructurecatalyst is synthesized by one step under hydrothermal condition, and the preparation method is simple. In the BiFeO3 / Bi25FeO40 heterostructure catalyst, the heterostructure formed by BiFeO3 and Bi25FeO40 can inhibit the compounding of visible-light-driven photocatalyst BiFeO3 photoinduced electrons and holes, at the same time, under the combined action of light and Fe<3+>, potassium hydrogen persulfate can be activated to produce SO4.<-> rapidly and efficiently, and under the synergistic effect of heterostructure photocatalytic reaction and advanced oxidation reaction, the degradation rate onoxytetracycline can reach 77.69% in 40min.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, in particular to a BiFeO 3 / Bi 25 FeO 40 Preparation method and application of heterostructure catalyst, especially related to a method using BiFeO 3 / Bi 25 FeO 40 Application of heterostructures as dual catalysts for photocatalytic reactions and advanced oxidation reactions in the field of antibiotic degradation. Background technique [0002] my country is a big country in the production and use of antibiotics. A large number of antibiotics are directly or indirectly discharged, causing secondary pollution to the water environment, and causing significant toxic effects on the growth and development of microorganisms, animals, and plants. What is shocking is that veterinary antibiotics have been detected in children's urine tests in Jiangsu, Zhejiang, Shanghai, Anhui and other places at the beginning of this year. It is urgent to find an efficient and environment-friendly m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/843B01J37/10C02F1/30C02F1/72C02F103/34C02F101/34C02F101/38
CPCB01J23/8437B01J37/10C02F1/30C02F1/725C02F2305/10C02F2103/343C02F2101/34C02F2101/38B01J35/39Y02W10/37
Inventor 池方丽边德军艾胜书李广柱田曦
Owner CHANGCHUN INST OF TECH