Check patentability & draft patents in minutes with Patsnap Eureka AI!

Perovskite type LaCoO3 modified zinc oxide photocatalyst as well as preparation method and application thereof

A perovskite type, photocatalyst technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of low catalytic efficiency and achieve photocatalytic Improvement of degradation efficiency and effect of high visible light catalytic efficiency

Pending Publication Date: 2022-03-01
FUYANG NORMAL UNIVERSITY
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problem of low catalytic efficiency of zinc oxide as a photocatalyst under visible light catalytic conditions, and greatly improves the visible light catalytic efficiency of zinc oxide

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 LaCoO3 modified zinc oxide photocatalyst as well as preparation method and application thereof
  • Perovskite type LaCoO3 modified zinc oxide photocatalyst as well as preparation method and application thereof
  • Perovskite type LaCoO3 modified zinc oxide photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of perovskite-type LaCoO by sol-gel method 3 Wet gel; then dried at 120°C by spontaneous combustion to form perovskite LaCoO 3 dry gel powder.

[0032] Weigh 3.24 grams of lanthanum nitrate, 2.91 grams of cobalt nitrate, and 4.21 grams of citric acid, disperse them in 10 milliliters of deionized water, perform ultrasonication to achieve complete dissolution, and carry out magnetic stirring for 30 minutes, and the reaction temperature is 70 ° C; after stirring for 3 hours, then Raise the temperature to 80°C, continue to stir until a gel is formed, and end the stirring. Wet gel perovskite LaCoO 3 Pour into ceramic vessels and start drying, which takes place in five stages. In the first stage, the drying oven is heated to 90°C and kept for 6 hours; in the second stage, the temperature is raised from 90°C to 100°C and kept for 6 hours; in the third stage, the temperature is raised from 100°C to 110°C and kept for 6 hours; In the fourth stage, the tempera...

Embodiment 2

[0040] In this example, perovskite-type LaCoO was prepared 3 The method and process are the same as in Example 1, and the perovskite type LaCoO 3 Modified zinc oxide photocatalyst (ZnO-LaCoO 3 ) process is as follows:

[0041] Modifier Perovskite LaCoO 3 Powder precursor solution configuration: weighing perovskite LaCoO 3 50 mg of the powder was dispersed in 10 ml of absolute ethanol to form solution A.

[0042] Zinc oxide precursor solution configuration: Weigh 3.64 grams of cetyltrimethylammonium bromide, 2.19 grams of zinc acetate, and 0.61 grams of urea, and disperse them in 40 milliliters of absolute ethanol to form solution B.

[0043] Solution A and solution B were mixed and stirred with solution AB for 16 hours, and the stirred mixed solution was transferred into a polytetrafluoroethylene reactor for high-pressure hydrothermal reaction. The hydrothermal reaction conditions are carried out in three stages; in the first stage, the drying oven is heated from 40°C to ...

Embodiment 3

[0045] In this example, perovskite-type LaCoO was prepared 3 The method and process are the same as in Example 1, and the perovskite type LaCoO 3 Modified zinc oxide photocatalyst (ZnO-LaCoO 3 ) process is as follows:

[0046] Modifier Perovskite LaCoO 3 Powder precursor solution configuration: weighing perovskite LaCoO 3 70 mg of powder was dispersed in 10 ml of absolute ethanol to form solution A.

[0047] Zinc oxide precursor solution configuration: Weigh 3.64 grams of cetyltrimethylammonium bromide, 2.19 grams of zinc acetate, and 0.61 grams of urea, respectively, and disperse them in 40 milliliters of absolute ethanol to form solution B.

[0048] Solution A and solution B were mixed and stirred for 30 hours, and the stirred mixed solution was transferred into a polytetrafluoroethylene reactor for high-pressure reaction. The hydrothermal reaction conditions are carried out in three stages; in the first stage, the drying oven is heated from 40°C to 140°C, and the heati...

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 relates to the technical field of photocatalysts and discloses a perovskite type LaCoO3 modified zinc oxide photocatalyst as well as a preparation method and application thereof. Aiming at the defects that zinc oxide is poor in visible light utilization capability and high in electron-hole recombination rate, perovskite type LaCoO3 is used as a modifier, and the perovskite type LaCoO3 modified zinc oxide is obtained through a hydrothermal method, so that the visible light absorption performance of zinc oxide is improved, the electron-hole recombination rate is reduced, and the catalytic performance of zinc oxide is improved. The composite material is used in the field of sewage purification and is used for purifying antibiotic tetracycline hydrochloride in wastewater.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst preparation, in particular to a perovskite-type LaCoO 3 Modified zinc oxide photocatalyst, preparation method and application thereof. Background technique [0002] In recent years, with the rapid development of modern industry, a large number of pollutants have been released into the environment, seriously affecting the normal life of human beings, and the problem of antibiotics in water is particularly serious. Due to the overuse of antibiotics, it has been detected many times in municipal sewage outlets, wastewater treatment plants and natural water. The researchers found that the concentration of tetracycline in the water phase of typical discharge sources reached the highest. The refractory degradation of tetracycline hydrochloride has become one of the major problems in the field of environment worldwide. Therefore, it will be of great practical significance to seek a technology for ...

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): B01J23/83B01J37/03B01J37/10C02F1/30C02F101/34C02F101/38
CPCB01J23/83B01J23/002B01J37/036B01J37/10C02F1/30B01J2523/00C02F2101/34C02F2101/345C02F2101/38C02F2305/10B01J35/39B01J2523/27B01J2523/3706B01J2523/845
Inventor 张颖赵士林洪豪浩吴昊崔玉敏李慧泉苗慧
Owner FUYANG NORMAL UNIVERSITY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com