Preparation method and application of sulfur-doped graphite-phase carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst

A technology of graphite phase carbon nitride and ferric oxide, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the limitation of carbon nitride material application Prospects, high photogenerated electron-hole recombination rate, difficult catalyst recycling, etc., to achieve the effect of improving effective separation and reuse performance, improving photocatalytic efficiency, and improving photocatalytic effect

Active Publication Date: 2020-06-12
TONGJI UNIV
View PDF11 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used traditional methods for the preparation of graphite-like carbon nitride have problems such as large blocky particles, small specific surface area, low crystallinity, and incomplete polymerization, which limit the application prospects of carbon nitride materials. Its preparation method can be further improved
At the same time, in terms of the properties of use, the current graphite-like carbon nitride still has problems such as high recombination rate of photogenerated electrons and holes, and difficulty in recycling catalysts in the field of water treatment.

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 and application of sulfur-doped graphite-phase carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst
  • Preparation method and application of sulfur-doped graphite-phase carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst
  • Preparation method and application of sulfur-doped graphite-phase carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] To specifically produce a sulfur-doped graphitic phase carbon nitride nanosheet-loaded graphene (mass fraction accounts for 0.2%) and ferric oxide composite magnetic photocatalyst (20%- Fe 3 o 4 / GE / CN) as an example, including sulfur-doped graphite phase carbon nitride nanosheets, graphene dispersion (purchased in the market), and ferric oxide particles. Wherein the catalyst is supported by sulfur-doped graphite-like carbon nitride nano-sheets, and the sulfur-doped graphite-like carbon nitride nano-sheets are decorated with graphene and ferroferric oxide particles.

[0061] In this embodiment, graphene and ferric oxide particles are evenly attached to the surface of sulfur-doped graphite-like carbon nitride nanosheets.

[0062]In this embodiment, the graphene dispersion is loaded and modified on sulfur-doped graphite-like carbon nitride nanosheets by impregnation to form a sulfur-doped graphite-like carbon nitride-supported graphene photocatalyst composite material, ...

Embodiment 2

[0091] A kind of sulfur-doped graphitic phase carbon nitride nanosheet loaded graphene and iron ferric oxide composite magnetic photocatalyst in the application in the treatment of ranitidine antibiotic wastewater, comprising the following steps:

[0092] (1) Take by weighing 50 milligrams of the sulfur-doped graphitic phase carbon nitride nanoplates that 50 milligrams of embodiment 1 make support graphene and ferroferric oxide composite magnetic photocatalyst (20%-Fe 3 o 4 / GE / CN), added to 50 milliliters of ranitidine wastewater with an initial concentration of 5 milligrams per liter, and then placed in a photocatalytic reaction device and stirred for 30 minutes at a rate of 500 rpm in a dark and light-proof environment.

[0093] (2) Adopt the above-mentioned 300-watt xenon lamp as the light source, use a cut-off filter below 400 nanometers to ensure that ranitidine and the composite photocatalyst carry out the photocatalytic reaction in the visible light region (wavelength λ...

Embodiment 3

[0097] The application of a kind of sulfur-doped graphitic phase carbon nitride nanosheet loaded graphene and iron ferric oxide composite magnetic photocatalyst in the treatment of ranitidine antibiotic wastewater comprises the following steps:

[0098] (1) Take by weighing 50 milligrams of the sulfur-doped graphitic phase carbon nitride nanosheets loaded graphene and ferroferric oxide composite magnetic photocatalyst (20%-Fe 3 o 4 / GE / CN), added to 50 milliliters of ranitidine wastewater with an initial concentration of 5 milligrams per liter, and then placed in a photocatalytic reaction device and stirred for 30 minutes at a rate of 500 rpm in a dark and light-proof environment.

[0099] (2) Adopt the above-mentioned 300-watt xenon lamp as the light source, use a cut-off filter below 400 nanometers to ensure that ranitidine and the composite photocatalyst carry out the photocatalytic reaction in the visible light region (wavelength λ>400 nanometers) for 60 minutes, and compl...

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 provides a sulfur-doped graphite-like carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst. A sulfur-doped graphite-like carbon nitride nanosheet is taken as a carrier, and graphene and ferroferric oxide particles are modified on the sulfur-doped graphite-like carbon nitride nanosheet. The preparation method comprises the following steps: preparing sulfur-doped graphite-like carbon nitride nanosheets by using thiourea through high-temperature pyrolysis, preparing a sulfur-doped graphite-like carbon nitride loaded graphene composite material by using an impregnation method, and preparing the sulfur-doped graphite-like carbon nitride loaded graphene and ferroferric oxide composite photocatalyst material by using an alkaline-thermal coprecipitation method. The composite magnetic photocatalyst has the advantages of high photocatalytic activity, good stability, magnetic force and easy recovery, and the preparation process has the advantages of simple operation, low cost and good safety. The composite magnetic photocatalyst can be used for treating wastewater containing various antibiotics and is good in stability and practicability, high in efficiency, easy and convenient to operate, low in cost and high in recycling value.

Description

technical field [0001] The invention belongs to the field of functional composite photocatalyst technology and application, and relates to a graphite-like phase carbon nitride nanosheet composite photocatalyst and its preparation method and application, especially a sulfur-doped graphite-like phase carbon nitride nanosheet-supported graphene Preparation method and application of composite magnetic photocatalyst with ferric oxide. Background technique [0002] In recent years, the problems of environmental water pollution and energy shortage have become increasingly prominent, and traditional environmental remediation technologies have gradually failed to meet people's requirements. Therefore, finding a new type of efficient and energy-saving environmental remediation technology has become one of the current research hotspots. In recent years, the research on photocatalytic advanced oxidation technology based on semiconductor catalysts has attracted the attention of researche...

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): B01J27/24B01J23/745B01J21/18B01J37/02B01J37/03C02F1/30C02F101/34C02F101/38
CPCB01J27/24B01J23/745B01J21/18B01J35/004B01J35/0033B01J35/0013B01J37/0201B01J37/035C02F1/30C02F2101/34C02F2101/38C02F2101/40C02F2101/345C02F2305/10Y02W10/37
Inventor 王林窦义成李咏梅严婷婷孙启雅
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap