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

Biochar-mediated Ag3PO4/alpha-Fe2O3 heterojunction visible light catalytic composite material and preparation method thereof

A composite material and biochar technology, applied in the field of photocatalysis, can solve problems such as the influence of photocatalytic performance

Active Publication Date: 2022-04-08
YANGZHOU UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Ag 3 PO 4 The photocatalytic performance will be affected by factors such as "photocorrosion", catalyst stability and electron-hole pair recombination.

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
  • Biochar-mediated Ag3PO4/alpha-Fe2O3 heterojunction visible light catalytic composite material and preparation method thereof
  • Biochar-mediated Ag3PO4/alpha-Fe2O3 heterojunction visible light catalytic composite material and preparation method thereof
  • Biochar-mediated Ag3PO4/alpha-Fe2O3 heterojunction visible light catalytic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Materials and methods

[0033] 1.1 Reagents

[0034] Ferrous sulfate heptahydrate (FeSO 4 ·7H 2 O), sodium dihydrogen phosphate dihydrate (NaH 2 PO 4 2H 2 O), silver nitrate (AgNO 3 ), ethanol (C 2 h 5 OH), ammonia (NH 3 ·H 2 O), rhodamine B, tert-butanol (TBA), disodium ethylenediaminetetraacetic acid (EDTA-Na) and hydrochloric acid (HCl) were provided by Sinopharm Chemical Reagent Co., Ltd. Tetracycline (TC), ciprofloxacin (CIP), benzoquinone (BQ), furfuryl alcohol (C 5 h 6 o 2 ), 5,5-dimethyl-1-pyrrolidine N-oxide (DMPO) and 2,2,6,6-tetramethyl-4-piperidone (TEMP) were purchased from Aladdin Corporation. All reagents were of analytical grade and were not purified. Working solutions were prepared using 18.25 MΩ deionized water.

[0035] 1.2 Preparation of catalyst

[0036] Biochar (BC): Pine wood flour was rinsed thoroughly with deionized water to remove impurities and dried at 80°C. in continuous CO 2 Dry biomass was pyrolyzed in a tube furnace a...

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
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of photocatalysis, in particular to a biochar-mediated Ag3PO4 / alpha-Fe2O3 heterojunction visible light catalytic composite material and a preparation method thereof.The biochar and a FeSO4 solution are mixed and stirred, the obtained turbid liquid is placed in a high-pressure reaction kettle to react, and after cooling and centrifugation, vacuum drying is conducted to obtain a Fe2O3-BC composite material; ammonia water is dropwise added into an AgNO3 solution until precipitates are completely dissolved, the Fe2O3-BC composite material is added after magnetic stirring is conducted under the dark condition, the Fe2O3-BC composite material is stirred with a magnetic stirrer in the dark after ultrasonic treatment, then a NaH2PO4 solution is dropwise added, a reaction is conducted in the dark, an obtained mixture is centrifuged, solid matter is collected and subjected to vacuum drying, and the Fe2O3-BC composite material is obtained. And the charcoal mediated Ag3PO4 / alpha-Fe2O3 heterojunction visible light catalysis composite material is obtained. The material can efficiently degrade dyes and antibiotics in water.

Description

technical field [0001] The present invention relates to the technical field of photocatalysis, more specifically to biochar-mediated Ag 3 PO 4 / α-Fe 2 o 3 Heterojunction visible light photocatalytic composite material and preparation method. Background technique [0002] Organic dyes and antibiotics are common organic pollutants in wastewater that are harmful to human health. Photocatalytic technology has attracted more attention than traditional technologies (such as adsorption, Fenton oxidation, etc.) due to its excellent ability to degrade organic pollutants in wastewater into less toxic intermediates or carbon dioxide. Compared to UV light activation of catalysts to generate reactive oxygen species (ROS), photocatalytic oxidation technology is more favored due to its lower cost and greater feasibility. In this sense, it is necessary to find an efficient catalyst that can be activated by visible light. Currently, Ag 3 PO 4 It is a new type of semiconductor catalys...

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): B01J27/185B01J37/10C02F1/30C02F101/30
Inventor 施俊王小治王圣森王杰尹微琴
Owner YANGZHOU UNIV
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