Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of polypyrrole modified TiO2 coated LaB6 photodegradation catalyst

A polypyrrole and catalyst technology, applied in the field of polypyrrole-modified TiO2-coated LaB6 photodegradation catalyst and its preparation, can solve the problems that the hole separation efficiency is not as good as noble metal deposition and dye sensitization

Inactive Publication Date: 2021-01-26
ZHEJIANG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional metal ion doping and non-metal ion doping often increase the output rate of electron holes and accelerate the recombination speed of electron-hole pairs, but the hole separation efficiency is often not as good as noble metal deposition and dye sensitization

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 polypyrrole modified TiO2 coated LaB6 photodegradation catalyst
  • Preparation method of polypyrrole modified TiO2 coated LaB6 photodegradation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 takes lanthanum oxide as the synthesis of lanthanum boride of lanthanum source

[0050] Weigh 0.001 mole of lanthanum oxide (0.33g, containing 0.002 mole of lanthanum) and 0.012 mole of sodium metaborate according to the molar ratio of lanthanum, boron, and aluminum atoms as 1:6:7 (La:B:Al=1:6:7). (0.78g) and Al 0.014 mole (0.37g) powders were added to the ball mill jar, and after ball milling at a speed of 1000rpm for 12 hours, a mechanical mixture of lanthanum oxide, sodium metaborate and aluminum was obtained. The heating rate was heated from room temperature to 500°C and then kept for 2 hours; a mixture of lanthanum boride, metaaluminate and alumina was obtained through the following reaction:

[0051] La 2 o 3 +12NaBO 2 +14Al→2LaB 6 +12NaAlO 2 +Al 2 o 3

[0052] After cooling to room temperature, wash with 5wt% hydrochloric acid, centrifuge, wash with deionized water, filter, and vacuum-dry at 80° C. to obtain nanometer single crystal lanthanum...

Embodiment 2

[0053] Embodiment 2 takes lanthanum hydroxide as the synthesis of lanthanum boride of lanthanum source

[0054] According to the molar ratio of lanthanum, boron, and aluminum atoms as 1:6:7 (La:B:Al=1:6:7), weigh 0.001 mole (0.19g) of lanthanum hydroxide and 0.006 mole (0.39g) of sodium metaborate ) and Al 0.007 mole (0.18g) powder into the ball mill tank, after ball milling at 1000rpm for 12 hours to obtain a mechanical mixture of lanthanum oxide, sodium metaborate and aluminum, placed in the reactor, with a heating rate of 2 ° C / min from After heating at room temperature to 500°C, keep it warm for 2 hours; obtain a mixture of lanthanum boride, metaaluminate and aluminum hydroxide through the following reaction:

[0055] La(OH) 3 +6NaBO 2 +7Al→LaB 6 +6NaAlO 2 +Al(OH) 3

[0056] After cooling to room temperature, wash with 5wt% hydrochloric acid, centrifuge, wash with deionized water, filter, and vacuum-dry at 80° C. to obtain nanometer single crystal lanthanum boride....

Embodiment 3

[0057] Embodiment 3: take lanthanum carbonate as the synthesis of lanthanum boride of lanthanum source

[0058] Weigh 0.001 mole of lanthanum carbonate (0.46g, containing 0.002 mole of lanthanum) and 0.012 mole of sodium metaborate according to the molar ratio of lanthanum, boron, and aluminum atoms as 1:6:7 (La:B:Al=1:6:7). (0.78g) and Al 0.014 mole (0.37g) powders were added to the ball mill jar, and after ball milling at a speed of 1000rpm for 12 hours, a mechanical mixture of lanthanum oxide, sodium metaborate and aluminum was obtained. The heating rate is heated from room temperature to 500°C and then kept for 2 hours; CO is released through the following reaction 2 , to obtain a mixture of lanthanum boride, metaaluminate and alumina:

[0059] La 2 (CO 3 ) 3 +12NaBO 2 +14Al→2LaB 6 +12NaAlO 2 +Al 2 o 3 +3CO 2

[0060] After cooling to room temperature, wash with 5wt% hydrochloric acid, centrifuge, wash with deionized water, filter, and vacuum-dry at 80° C. to ob...

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 a photodegradation sewage treatment technology, and aims to provide a preparation method of a polypyrrole modified TiO2 coated LaB6 photodegradation catalyst. The preparationmethod comprises the following steps: spraying precursor sol containing nano single crystal lanthanum boride into hot air to form a titanium dioxide coated nano single crystal lanthanum boride precursor, and conducting firing to obtain an anatase titanium dioxide coated nano single crystal lanthanum boride material; and adding the anatase titanium dioxide coated nano single crystal lanthanum boride material into a polypyrrole-modified alpha-cyclodextrin solution, conducting uniform stirring, and conducting heating and drying to obtain the polypyrrole-modified TiO2-coated LaB6 photodegradationcatalyst. According to the method, the production cost of lanthanum boride is greatly reduced, the single crystal particle size consistency of lanthanum boride is improved, and quality management of large-scale production is facilitated. The product not only absorbs ultraviolet rays and near infrared rays to degrade organic matter, but also can change the wavelength of absorbed light rays by adjusting the chain length of polypyrrole, so that the light efficiency is improved, and the degradation speed of the organic matter is increased. The degradation speed of organic matters is promoted, thedegradation degree of the organic matters is improved, and the sewage purification effect is improved.

Description

technical field [0001] The invention relates to the technical field of photodegradation sewage treatment, in particular to a polypyrrole-modified TiO 2 Coated LaB 6 Photodegradation catalyst and preparation method thereof. Background technique [0002] Water pollution caused by industrial wastewater, urban domestic sewage discharge, and the use of organic pesticides has seriously affected people's health and the environment. How to solve the problem of environmental pollution has become another challenge in today's society. Chemical treatment often brings secondary pollution problems. Photocatalytic degradation of organic matter is not only environmentally friendly, but also has a large treatment capacity and low energy consumption. It is a sewage treatment technology with commercial prospects. Numerous studies have shown that the use of TiO 2 Photocatalysis can effectively degrade pollutants in water sources and pollutants in the air. And, by TiO 2 Photocatalysis can e...

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): B01J31/06B01J31/38C02F1/30C02F101/38
CPCB01J31/06B01J31/38C02F1/30C02F2305/10C02F2101/40B01J35/39
Inventor 刘宾虹闫卿李洲鹏
Owner ZHEJIANG UNIV
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