Method for preparing bismuth oxyhalide - diatomite composite photocatalyst

A technology of bismuth oxyhalide and diatomite, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of limited adsorption capacity and small specific surface area

Inactive Publication Date: 2017-08-11
HUNAN CITY UNIV
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In summary, the existing problems in the prior art are: as a photocatalyst, bismuth oxyhalide has easy-to-obtain raw materials and simple preparation process, and can be excited by visible light and directly used as a visible light photocatalytic material to remove organic pollutants in the environment, but There is a problem of small specific surface area and limited adsorption capacity

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
  • Method for preparing bismuth oxyhalide - diatomite composite photocatalyst
  • Method for preparing bismuth oxyhalide - diatomite composite photocatalyst
  • Method for preparing bismuth oxyhalide - diatomite composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] like figure 1 As shown, the preparation method of the bismuth oxyhalide-diatomite composite photocatalyst provided by the embodiments of the present invention comprises the following steps:

[0034] S101: After mixing according to the ratio of KX or NaX: water: refined diatomaceous earth = 20-500: 2000-10000: 100-4000 in parts by weight, stir for 5-30 minutes to make a slurry; X is Cl, Br, I ;

[0035] S102: According to parts by weight Bi(NO 3 ) 3 ·5H 2 O: KX or NaX=500-1...

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
diameteraaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of catalysts and discloses a method for preparing a bismuth oxyhalide - diatomite composite photocatalyst. Raw material refined diatomite is taken as a carrier, bismuth nitrate pentahydrate, potassium chloride, potassium bromide and potassium iodide are taken as precursors, a normal temperature direct hydrolysis method is adopted to directly synthesize the bismuth oxyhalide - diatomite composite photocatalyst, the composite material is filtered, washed and dried, and then the finished product is obtained. BiOX is successfully loaded on a diatomite rotary screen and is of a flaky hierarchical structure; and on equal conditions, the degradation rate of rhodamine B reaches 86.7% under the conditions that the initial dye concentration is 15 mg / L, the catalyst dosage is 0.15 g and a 50 W LED blue light lamp shines for 50 min. A preparation process is simple, raw materials are easy to obtain, the product can thoroughly remove harmful substances in air and water under visible light, the cost is low, and the method has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a preparation method of a bismuth oxyhalide-diatomite composite photocatalyst. Background technique [0002] With the rapid development of industrialization, toxic and harmful organic pollutants have entered the environment, and pollution has begun to seriously threaten the physical and mental health of human beings. Diatomaceous earth is a biogenic siliceous sedimentary rock. Because of its light weight, porous and regular distribution of pores, the pore diameter ranges from tens of nanometers to hundreds of nanometers, it has a large specific surface area and can be used to adsorb organic and inorganic substances. , has a good application prospect in the field of environmental protection, especially in the control of water pollution and air pollution. However, studies have found that purely using diatomite to treat wastewater and waste gas mainly uses the adsorption properti...

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): B01J27/06C02F1/30C02F1/32C02F101/30
CPCB01J27/06B01J35/004C02F1/30C02F1/32C02F2101/308
Inventor 林立胡拥军董超南刘欢易斌
Owner HUNAN CITY UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap