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

A method for photocatalytic degradation of bisphenol A in water and the catalyst used therefor

A catalytic degradation and photocatalytic technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, water treatment of special compounds, etc., to achieve good practicability, increased specific surface area, and easy promotion

Active Publication Date: 2020-04-03
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although O-doped g-C 3 N 4 There have been some studies, but there are still many problems to be studied on how to improve the method, realize controllable O doping, and further improve the visible light catalytic effect of the catalyst.

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
  • A method for photocatalytic degradation of bisphenol A in water and the catalyst used therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 O-g-C 3 N 4 preparation

[0026] 1. The melamine was calcined at a high temperature of 550 °C for 4 hours (the heating rate was 2 °C / min), and after grinding and sieving, the graphite phase carbon nitride material (g-C 3 N 4 ).

[0027] 2. Weigh 2g of g-C obtained in step 1 3 N 4 Put in a 250mL beaker, add H 2 O 2 120 mL, magnetically stirred at 60 °C for 20 min, and washed with deionized water until neutral. After the obtained material is dried, sieved to obtain product H 2 O 2 -g-C 3 N 4 .

[0028] 3. The H obtained in step 2 2 O 2 -g-C 3 N 4 The material was calcined at a high temperature of 500 ° C for 2 hours to obtain the product O-g-C 3 N 4 .

[0029] figure 1 O-g-C prepared by high temperature-oxidation-high temperature combined treatment observed using transmission electron microscopy (TEM) (JEOL JEM 2100 model) 3 N 4 TEM image, O-g-C after treatment 3 N 4 The morphology occurred in the form of thin fragments, and the BET speci...

Embodiment 2

[0030] Example 2 Visible light degradation of bisphenol A in water

[0031]The photocatalytic reaction was carried out in an XPA series-7 photocatalytic reactor produced by Nanjing Xujiang Power Plant. The reaction temperature was 25 °C, the catalyst dosage was 0.02 g, and the bisphenol A (BPA) solution was 50 mL with a concentration of 10 ppm. The type of catalyst is: untreated g-C 3 N 4 , g-C oxidized by single hydrogen peroxide 3 N 4 , single high temperature calcined g-C 3 N 4 , embodiment 1 obtains product O-g-C 3 N 4 .

[0032] Oxidation of g-C with single hydrogen peroxide 3 N 4 The preparation method is hydrothermal method, weigh 2g of g-C 3 N 4 In a 250 mL beaker, 120 mL of hydrogen peroxide was added, calcined at 550 °C for 3 h, then transferred to a reaction kettle, and hydrothermally reacted at 150 °C for 5 h to obtain the product.

[0033] Single high temperature calcined g-C 3 N 4 The preparation method is as follows under nitrogen atmosphere, g-C ...

Embodiment 3

[0037] Example 3 O-g-C under different conditions 3 N 4 preparation

[0038] 1. The melamine was calcined at a high temperature of 550 °C for 4 hours (the heating rate was 2 °C / min), and after grinding and sieving, the graphite phase carbon nitride material (g-C 3 N 4 ).

[0039] 2. Weigh 2g of g-C obtained in step 1 3 N 4 Put in a 250mL beaker, add H 2 O 2 60 mL, magnetically stirred at 60 °C for 20 min, and then washed with deionized water until neutral. After the obtained material is dried, sieved to obtain product H 2 O 2 -g-C 3 N 4 .

[0040] 3. The H obtained in step 2 2 O 2 -g-C 3 N 4 The material was calcined at a high temperature of 500 ° C for 2 hours to obtain the product O-g-C 3 N 4 .

[0041] The O-g-C obtained in step 3 was analyzed using ASAP2020 BET specific surface area tester from Micromeritics. 3 N 4 BET specific surface area, using N 2 Static adsorption method for analysis and determination of product specific surface area 11.80m 2 / ...

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
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for photocatalytically degrading bisphenol A in water. BPA solution and O‑g‑C 3 N 4 Mix thoroughly, first darkly adsorb, and then catalytically degrade for more than 3 hours under visible light conditions to achieve a degradation rate of more than 60%; among them, O‑g‑C 3 N 4 O‑g‑C prepared by high temperature‑oxidation‑high temperature combined treatment 3 N 4 . This invention utilizes cheap and easily available melamine raw materials to prepare O-g-C with superior performance through a high-temperature-oxidation-high-temperature combined treatment path. 3 N 4 product, the entire preparation process is simple and quick, and easier to promote. O‑g‑C prepared through a high-temperature-oxidation-high-temperature combined treatment path 3 N 4 Compared with products after single oxidation or single high-temperature calcination, the O-doping effect of the product is promoted, the specific surface area is increased, the light absorption domain is significantly broadened, and the photocatalytic degradation efficiency of bisphenol A in water in the visible light region reaches up to 62.3%, which is 7 times higher than the degradation efficiency of single treatment products, and has very good practicality.

Description

technical field [0001] The invention belongs to the technical field of oxygen-doped graphite phase carbon nitride, and particularly relates to a method for photocatalytic degradation of bisphenol A in water and a catalyst used therefor. Background technique [0002] Photocatalytic technology can realize the efficient conversion and storage of solar energy, and can drive important chemical reactions under certain conditions, and has great advantages in solving environmental energy problems. Traditional semiconductor photocatalysts have the disadvantages of narrow spectral response range, low solar energy utilization and poor stability. Exploring visible light catalysts with excellent performance, low price, and stability is of great significance in solving energy and environmental problems. [0003] Graphitic carbon nitride (g-C for short) 3 N 4 ), as a new type of non-metallic semiconductor photocatalyst, has the advantages of good stability and cheap raw materials. Howe...

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 Patents(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/34
CPCC02F1/30B01J27/24C02F2101/345C02F2305/10B01J35/39
Inventor 唐荣王小平秦品珠干方群丁任丽陈欢
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
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