Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of manganese zinc ferrite/bismuth oxide magnetic photocatalyst

A technology of manganese zinc ferrite and photocatalyst, which is applied in the direction of physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, chemical instrument and method, etc., which can solve the problem of low photocatalytic efficiency and difficulty in recycling, etc. problem, to achieve the effect of simple operation, sufficient solid-liquid mixing, and less equipment

Inactive Publication Date: 2015-03-25
CHONGQING UNIV
View PDF5 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is aimed at the existing Bi 2 o 3 Due to the problems of low photocatalytic efficiency and difficult recovery, a preparation method of manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst is proposed. The prepared manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst has High photocatalytic efficiency, and the preparation method of the catalyst is simple, low cost, high recovery rate, the recovered catalyst still has high photocatalytic activity, and can effectively degrade aromatic heterocyclic dye organic pollutants in wastewater

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 of manganese zinc ferrite/bismuth oxide magnetic photocatalyst
  • Preparation method of manganese zinc ferrite/bismuth oxide magnetic photocatalyst
  • Preparation method of manganese zinc ferrite/bismuth oxide magnetic photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst, concrete steps are as follows:

[0026] (1) Preparation of manganese zinc ferrite

[0027] Weigh 1.91g of zinc sulfate, 2.77g of manganese sulfate, and 14.57g of ferric chloride hexahydrate and dissolve in water to obtain a solution, then add the zinc sulfate solution and ferric chloride solution into the manganese sulfate solution, and stir thoroughly to obtain a mixed solution. Weigh 16.40 g of ammonium oxalate and dissolve in water to obtain an ammonium oxalate solution. The mixed solution and the ammonium oxalate solution were heated to 80° C. under water bath conditions, and then the mixed solution was slowly added dropwise to the ammonium oxalate solution, and then the pH value was adjusted to 7 with ammonia water. The resulting oxalate precipitate was aged at room temperature for 12 hours, filtered, washed and dried, and finally placed in a muffle furnace and c...

Embodiment 2

[0033] A kind of preparation method of manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst, concrete steps are as follows:

[0034] The (1) step is the same as embodiment 1.

[0035] The (2) step is the same as embodiment 1.

[0036] In step (3), take an appropriate amount of manganese zinc ferrite according to the mass ratio of manganese zinc ferrite and bismuth oxide as 15:100, add it to the bismuth oxide precursor prepared in step (2), and mechanically stir for 2 hours. The precursor of the gray manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst was obtained. The precursor was filtered, washed, and dried in an oven at 60°C. The dried precursor was placed in a muffle furnace and calcined at 380° C. for 10 minutes, then taken out immediately, and the manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst was obtained after cooling.

Embodiment 3

[0038] A kind of preparation method of manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst, concrete steps are as follows:

[0039] The (1) step is the same as embodiment 1.

[0040] The (2) step is the same as embodiment 1.

[0041] In step (3), take an appropriate amount of manganese zinc ferrite according to the mass ratio of manganese zinc ferrite and bismuth oxide as 20:100, add it to the bismuth oxide precursor prepared in step (2), and mechanically stir for 3 hours. The precursor of the gray manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst was obtained. The precursor was filtered, washed, and then dried in an oven at 60°C. The dried precursor was placed in a muffle furnace and calcined at 400° C. for 10 minutes, then taken out immediately, and the manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst was obtained after cooling.

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of a manganese zinc ferrite / bismuth oxide magnetic photocatalyst, and belongs to the field of inorganic catalytic materials. The preparation method comprises the following steps of firstly, preparing a bismuth oxide precursor, then preparing a precursor of the manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst, and finally, filtering, washing, drying and roasting to obtain the manganese zinc ferrite / bismuth oxide magnetic photocatalyst. According to the method, the preparation technology is simple; the used equipment is few; the preparation cycle is short; the production cost is low. The prepared magnetic composite photocatalyst is high in photocatalytic activity; the degradation rate of a 10mg / L rhodamine B solution for 2.5 hours reaches 99.1% under simulated sunlight, and the recovery rate reaches 89.3%; the manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst which is recycled for three times has the degradation rate of 85% to rhodamine B within 2.5 hours. The manganese zinc ferrite / bismuth oxide magnetic photocatalyst prepared by the invention can be widely applied to the field of photo-catalyzed degradation of organic pollutants.

Description

technical field [0001] The invention relates to a preparation method of manganese zinc ferrite / bismuth oxide composite magnetic photocatalyst, which belongs to the technical field of inorganic environmental protection photocatalytic materials. Background technique [0002] Semiconductor photocatalytic technology has gradually become one of the hot research topics due to its broad application prospects in the degradation of organic pollutants in water. The development of semiconductor photocatalytic technology mainly focuses on two directions. One is the traditional photocatalytic material titanium dioxide (TiO 2 ) research once occupied half of the photocatalytic research technology, but TiO 2 The band gap is wide (3.2eV), and it can only absorb ultraviolet light, and has no response to visible light that accounts for 43% of solar energy; the second is to develop other new photocatalysts (such as Ag 3 PO 4 and its complexes, sulfides, bismuth compounds and cobalt compound...

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
IPC IPC(8): B01J23/889C02F1/30H01F1/36
CPCY02W10/37
Inventor 徐龙君张兆娣刘成伦
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com