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

Amorphous FeOOH modified BiO2-x heterojunction photo-catalyst as well as preparation method and application thereof

A photocatalyst and heterojunction technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of catalytic activity improvement and precise synthesis difficult to control , to achieve the effect of large natural abundance, increased band gap value, and enriched active substances

Active Publication Date: 2021-01-01
WUHAN INSTITUTE OF TECHNOLOGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the precise synthesis of defects in the above patents is difficult to control, and the existence of oxygen vacancies is not necessarily conducive to the improvement of catalytic activity

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
  • Amorphous FeOOH modified BiO2-x heterojunction photo-catalyst as well as preparation method and application thereof
  • Amorphous FeOOH modified BiO2-x heterojunction photo-catalyst as well as preparation method and application thereof
  • Amorphous FeOOH modified BiO2-x heterojunction photo-catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of amorphous FeOOH modified BiO2-x Heterojunction photocatalyst (FeOOH / BiO 2-x ), its preparation method comprises the steps:

[0043] 1) Dissolve 3.6g of sodium hydroxide in 90mL of deionized water, add 4.2g of sodium bismuthate dihydrate after cooling, and after ultrasonic dispersion for 30min, transfer the obtained sodium bismuthate suspension to a 120mL stainless steel reaction kettle, and Continuous reaction at 180°C for 12h; after the hydrothermal reaction, wash the obtained solid with deionized water until neutral, and dry it in vacuum at 60°C to obtain BiO 2-x ;

[0044] 2) Take 0.4g of the obtained BiO 2-x In the Erlenmeyer flask, add 60mL ethanol solution (the ethanol concentration is 50vol%), and continuously sonicate for 3h to obtain BiO 2-x Thin slices; then add 0.0406g of ferric chloride hexahydrate to the obtained suspension, stir for 30 minutes, add ammonia solution dropwise to adjust the pH to 8.5, stir and react at room temperature for 12 hou...

Embodiment 2

[0048] A kind of amorphous FeOOH modified BiO 2-x Heterojunction photocatalyst (FeOOH / BiO 2-x ), its preparation method comprises the steps:

[0049] 1) Dissolve 1.2g of sodium hydroxide in 30mL of deionized water, add 1.4g of sodium bismuthate dihydrate after cooling, and after ultrasonic dispersion for 30min, transfer the obtained sodium bismuthate suspension to a 50mL stainless steel reaction kettle, and Continuous reaction at 180°C for 18h; after the hydrothermal reaction, wash the obtained solid with deionized water until neutral, and dry it in vacuum at 60°C to obtain BiO 2-x ;

[0050] 2) Take 0.4g of the obtained BiO 2-x In the Erlenmeyer flask, add 60mL of 50wt% ethanol solution, and continuously sonicate for 3h to obtain BiO 2-x Thin slices; then add 0.1622g of ferric chloride hexahydrate to the obtained suspension, stir for 30 minutes, add ammonia solution dropwise to adjust the pH to 8.5, stir and react at room temperature for 12 hours, then centrifuge and wash...

Embodiment 3

[0052] A kind of amorphous FeOOH modified BiO 2-x Heterojunction photocatalyst (FeOOH / BiO 2-x ), its preparation method comprises the steps:

[0053] 1) Dissolve 3.6g of sodium hydroxide in 90mL of deionized water, add 4.2g of sodium bismuthate dihydrate after cooling, and after ultrasonic dispersion for 30min, transfer the obtained sodium bismuthate suspension to a 120mL stainless steel reaction kettle, and Continuous reaction at 180°C for 12h; after the hydrothermal reaction, wash the obtained solid with deionized water until neutral, and dry it in vacuum at 60°C to obtain BiO 2-x ;

[0054] 2) Take 0.4g of the obtained BiO 2-x Add 60mL of 50% ethanol solution to the Erlenmeyer flask, and continuously sonicate for 3h to obtain BiO 2-x Thin slices; then add 0.6488g ferric chloride hexahydrate to the obtained suspension, stir for 30min, add ammonia solution dropwise to adjust the pH to 8.5, stir and react at room temperature for 12h, then centrifuge and wash, and dry under...

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 an amorphous FeOOH / BiO2-x heterojunction composite photo-catalytic material with near-infrared response. The amorphous FeOOH / BiO2-x heterojunction composite photo-catalytic material is prepared by in-situ deposition of ferric ions on a meta-stable BiO2-x sheet under a weakly alkaline condition at a normal temperature. The composite photo-catalytic material disclosed by theinvention has a relatively wide light absorption range, and has an excellent effect of catalyzing degradation of organic matters under near-infrared light and sunlight; the related preparation methodis simple, and good in repeatability, and the raw materials are abundant in nature, non-toxic, harmless, good in bio-compatibility, not easy to cause secondary pollution, and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of functional composite materials and their preparation, in particular to an amorphous FeOOH-modified BiO 2-x Heterojunction photocatalyst and its preparation method and application. Background technique [0002] With the rapid development of economy and society, the problem of environmental pollution has become increasingly prominent. Photocatalytic oxidation has attracted much attention due to its advantages of utilizing solar energy, low energy consumption, mild reaction conditions, and complete decomposition of pollutants. However, photocatalytic degradation technology is still in its infancy, and the limited utilization of light by catalysts is still a huge bottleneck restricting its industrialization. Most photocatalytic systems are only active under ultraviolet or visible light, which account for only 4% and 46% of solar radiation, respectively, and infrared light (NIR), which accounts for nearly 50...

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): B01J23/843B01J37/10B01J37/16B01J37/34B01J35/10C02F1/30C02F1/72C02F101/34C02F101/36
CPCB01J23/8437B01J37/10B01J37/16B01J37/343C02F1/30C02F1/725C02F2101/345C02F2101/36C02F2305/10C02F2305/02B01J35/39B01J35/61
Inventor 陈嵘黄圣男代嘉伟苏春平朱德雨田雪松
Owner WUHAN INSTITUTE OF TECHNOLOGY
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