Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of mesoporous carbon nitride photocatalyst and preparation method thereof

A mesoporous carbon nitride light, porous carbon nitride light technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. The effect of increasing capture sites and improving photocatalytic activity

Active Publication Date: 2017-11-03
JIANGNAN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but porous g-C 3 N 4 After synthesis, the hard template needs to be removed, which often requires the use of highly toxic HF or NH 4 HF 2 , more harmful to the human body

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 kind of mesoporous carbon nitride photocatalyst and preparation method thereof
  • A kind of mesoporous carbon nitride photocatalyst and preparation method thereof
  • A kind of mesoporous carbon nitride photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A kind of preparation method of mesoporous carbon nitride photocatalyst of the present invention comprises the following steps:

[0018] (1) Preparation of template mesoporous carbon: dissolve the mixture of polyether P123 and polyether F127 with 20mL 0.1M acid solution, then add 2g of β-cyclodextrin, stir for 1-1.5h, make it fully mixed, and then transfer to 50mL Teflon-lined stainless steel autoclave. React at 100-180°C for 30-40 hours. Centrifuge the obtained product, dry the product under vacuum at 50-80°C, put it into a tube furnace, introduce high-purity inert gas, and calcinate at 600-800°C for 3-5 hours to obtain mesoporous carbon with high specific surface area;

[0019] (2) Preparation of mesoporous carbon nitride: Weigh 0.3g of template mesoporous carbon prepared in step (1) and a certain amount of melamine, add 10mL alcohol solution and ultrasonically disperse for 10-30min, so that melamine can fully enter the pores of mesoporous carbon After drying at 50-...

Embodiment example 1

[0021] Embodiment example 1: the preparation method of a kind of mesoporous carbon nitride photocatalyst of the present invention comprises the following steps:

[0022] (1) Preparation of template mesoporous carbon: dissolve the mixture of polyether P123 and polyether F127 with 20mL of 0.1M HCl, then add 2g of β-cyclodextrin, stir for 1.5h, make it fully mixed, and then transfer to 50mL of polyether In a tetrafluoroethylene-lined stainless steel autoclave, react at 140°C for 36h. Centrifuge the obtained product, dry the product in vacuum at 60°C, put it into a tube furnace, pass high-purity nitrogen, and calcinate at 600°C for 5 hours to obtain a high specific surface area mesoporous carbon sample;

[0023] (2) Preparation of mesoporous carbon nitride: Weigh 0.3g of template mesoporous carbon prepared in step (1) and 3g of melamine, add 10mL of methanol solution and ultrasonically disperse for 30min, so that melamine fully enters the pores of mesoporous carbon, 55 After dryi...

Embodiment 2

[0025] Implementation example 2: the preparation method of a kind of mesoporous carbon nitride photocatalyst of the present invention comprises the following steps:

[0026] (1) Dissolve the mixture of polyether P123 and polyether F127 with 20mL of 0.1M HCl, then add 2g of β-cyclodextrin, stir for 1h, make it fully mixed, and then transfer to 50mL of polytetrafluoroethylene-lined stainless steel In a high pressure reactor. React at 130°C for 40 hours, centrifuge the obtained product, vacuum-dry the product at 60°C, put it into a tube furnace, pass high-purity nitrogen, and calcinate at 700°C for 3 hours to obtain a high specific surface area mesoporous carbon sample;

[0027] (2) Preparation of mesoporous carbon nitride: Weigh 0.3g of template mesoporous carbon prepared in step (1) and 2g of melamine, add 10mL ethanol solution and ultrasonically disperse for 30min, so that melamine fully enters the pores of mesoporous carbon, 60 After drying at ℃, put it into a tube furnace, ...

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 a mesoporous carbonitride photocatalyst and a preparation method thereof, belonging to the field of photocatalysis. The mesoporous carbonitride photocatalyst and the preparation method thereof are mainly characterized in that since mesoporous carbon is used as a template for preparation of mesoporous carbonitride, the template can be easily removed, small influence is exerted on prepared mesoporous carbonitride and mesoporous carbonitride has a high specific surface area. The preparation method comprises the following steps that: (1) polyether polymer is used as a template, beta-cyclodextrin is used as a carbon source, and low temperature polymerization and high temperature calcinations are carried out so as to prepare mesoporous carbon; and (2) mesoporous carbon prepared in the step (1) is used as the template and subjected to high-temperature thermopolymerization with melamine and then mesoporous carbon template is removed so as to prepare mesoporous carbonitride with a high specific surface area. The method is simple in process and low in cost; and the prepared mesoporous carbonitride photocatalyst has high visible-light catalytic activity.

Description

technical field [0001] The invention belongs to the photocatalytic technology, and relates to the preparation of mesoporous carbon nitride by template method, selects polyether polymers P123 and F127, uses β-cyclodextrin as carbon source, first prepares mesoporous carbon template, and then prepares mesoporous carbon template with melamine After high-temperature polycondensation under nitrogen atmosphere, the product mesoporous carbon / carbon nitride composite was calcined in air, and the prepared mesoporous carbon nitride photocatalyst broadened the spectral response range and had efficient visible light catalytic activity. Background technique [0002] At present, environmental problems and energy crisis are becoming increasingly prominent, and semiconductor photocatalytic technology has attracted much attention due to its potential application in environmental remediation and organic wastewater treatment. TiO 2 It is the first photocatalyst to be studied. It is a kind of 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 Patents(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/004B01J35/1004B01J37/082
Inventor 段芳张风丽王蓬鹏汪晓凤谈婷婷倪忠斌陈明清
Owner JIANGNAN UNIV