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

Perovskite type cesium lead bromide quantum dot composite Bi2WO6 photocatalyst and preparation method thereof

A lead cesium bromide quantum and photocatalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of scarcity of photocatalysts, achieve high catalytic efficiency, improve degradation efficiency, The effect of good catalytic performance

Inactive Publication Date: 2020-11-10
陈华
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most photocatalysts are only aimed at the treatment of antibiotic residues in ordinary wastewater, and photocatalysts applied to the degradation of antibiotics in organic systems are extremely rare.

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
  • Perovskite type cesium lead bromide quantum dot composite Bi2WO6 photocatalyst and preparation method thereof
  • Perovskite type cesium lead bromide quantum dot composite Bi2WO6 photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A perovskite-type lead cesium bromide quantum dot composite Bi 2 WO 6 The preparation method of photocatalyst comprises the following steps:

[0034] 1) Preparation of cesium oleate: drop 1.5 mol of cesium carbonate into a three-necked flask containing 2.6 mol of oleylamine and 3 mol of 1-octadecene and heat in an oil bath for 1 hour, then feed nitrogen and heat up. Then hexanoic acid and oleic acid were added sequentially, and the reaction was vigorously stirred for 0.5 hours;

[0035]2) Preparation of lead bromide quantum dots: mix 40ml of ethanol and 50ml of toluene evenly, add 2mol of octylamine, stir evenly, heat to 85°C in a water bath, grind 1mol of lead bromide into powder and add it to acetic acid , then add 2.5mol of N, N dimethylamide and the product obtained in step 1), raise the temperature of the water bath to 80° C., and react for 12 hours under slow stirring to obtain lead cesium bromide quantum dots;

[0036] 3) Bi 2 WO 6 Preparation: Take 1mol of ...

Embodiment 2

[0040] For a perovskite-type lead cesium bromide quantum dot composite Bi 2 WO 6 The temperature of the photocatalyst was regulated before nitrogen gas was introduced, and the other steps of the steps were completely consistent with those in Example 1. In step 1) in the oil bath temperature, when the oil bath temperature is less than 150°C, the weight drops sharply at 300°C in the thermogravimetric test, and the low oil bath temperature is not conducive to the perovskite type lead cesium bromide quantum dot composite Bi 2 WO 6 Preparation of photocatalyst perovskite structure, making perovskite-type lead cesium bromide quantum dots composited with Bi 2 WO 6 The thermal stability of the photocatalyst is greatly reduced.

[0041] Applied experiment

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 perovskite type lead-cesium bromide quantum dot composite Bi2WO6 photocatalyst, and the photocatalyst is synthesized from cesium oleate and lead bromide quantum dots; the cesium oleate is synthesized from cesium carbonate, oleylamine, oleic acid, hexanoic acid, 1-octadecene and oil bath; and the lead bromide quantum dots are synthesized from lead bromide, N, N-dimethylformamide, hexanoic acid, octylamine and toluene ethanol water bath. The synthesized lead-cesium bromide quantum dot composite Bi2WO6 photocatalyst has a perovskite type structure, can be stably dispersed in an ethanol solution without change, and can degrade antibiotic residues in an organic system.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a perovskite-type lead bromide cesium quantum dot composite Bi that is suitable for degradation of antibiotics in organic systems 2 WO 6 catalyst of light. Background technique [0002] With the rapid growth of population and rapid economic development, environmental pollution has become an increasingly serious problem. Antibiotic residues, a type of pharmaceutical pollutant, have caused serious impacts on human health and the ecological environment and have attracted global attention. Tetracycline hydrochloride (TC-HCl) is one of the common antibiotics, and its residues can cause serious damage to the ecosystem. For ecological protection and sustainable development, it is necessary for us to convert harmful residues into non-toxic and harmless substances, and various technologies have been applied to deal with antibiotic residues in water, such as advanced ...

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): B01J27/135C02F1/32C02F101/38C02F103/34
CPCB01J27/135C02F1/32C02F2305/10C02F2103/343C02F2101/38B01J35/39
Inventor 陈华
Owner 陈华
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