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

A kind of preparation method of iodine-sulfur co-doped carbon nitride

A carbon nitride and co-doping technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of high recombination rate of photogenerated carriers and poor photocatalytic performance, etc. Achieve the effects of excellent photocatalytic performance, simple preparation process and high separation efficiency

Active Publication Date: 2022-07-01
SHANGHAI NAT ENG RES CENT FORNANOTECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing carbon nitride co-doped with iodine and sulfur in view of the shortcomings of high photogenerated carrier recombination rate and poor photocatalytic performance in the existing preparation of carbon nitride

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 preparation method of iodine-sulfur co-doped carbon nitride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of iodine-sulfur co-doped carbon nitride, prepared according to the following steps:

[0015] 1) Weigh the carbon-nitrogen-rich carbon nitride precursor melamine, trimethyliodosulfonic acid and solvent deionized water according to the formula to make the mass ratio of carbon nitride precursor to trimethyliodosulfonic acid and solvent At 1:2:50, the carbon nitride precursor and trimethyliodosulfonic acid were first added to the solvent, stirred evenly and dissolved, and then kept at 80 °C, and the solvent was evaporated to dryness to obtain a solid;

[0016] 2) Grind and pulverize the solid obtained above, then put it into a ceramic crucible and cover it, put it into a muffle furnace, and heat it up to 500°C at a heating rate of 2°C / min, keep and roast for 5h, and the solid after natural cooling is Carbon nitride is co-doped with iodine and sulfur.

[0017] In the present invention, carbon-nitrogen-rich compounds such as urea other than melamine can also be used ...

Embodiment 2

[0020] A kind of iodine-sulfur co-doped carbon nitride, prepared according to the following steps:

[0021] 1) Weigh the carbon-nitrogen-rich carbon nitride precursor dicyandiamide, trimethyliodosulfonic acid and solvent ethanol according to the formula to make the quality of the carbon nitride precursor, trimethyliodosulfonic acid and solvent. The ratio is 1: 0.5: 100, carbon nitride precursor and trimethyl iodosulfonic acid are first added to the solvent, stirred and dissolved, and then kept at 90 ° C, and the solvent is evaporated to dryness to obtain a solid;

[0022] 2) Grind and pulverize the solid obtained above, then put it into a ceramic crucible and cover it, put it into a muffle furnace and heat it up to 550 °C at a heating rate of 5 °C / min, keep it warm for 3 hours, and the solid after natural cooling is Carbon nitride is co-doped with iodine and sulfur.

Embodiment 3

[0024] A kind of iodine-sulfur co-doped carbon nitride, prepared according to the following steps:

[0025] 1) Weigh carbon-nitrogen-rich carbon nitride precursors melamine cyanuric acid, trimethyliodosulfonic acid and solvent isopropanol according to the formula, so that the carbon nitride precursor, trimethyliodosulfonic acid and solvent are mixed together. The mass ratio is 1:5:200. First, the carbon nitride precursor and trimethyliodosulfonic acid are added to the solvent, stirred evenly and dissolved, and then kept at 100 °C, and the solvent is evaporated to dryness to obtain a solid;

[0026] 2) Grind and pulverize the solid obtained above, then put it into a ceramic crucible and cover it, put it into a muffle furnace and heat it up to 600 °C at a heating rate of 10 °C / min, keep it warm for 2 hours, and the solid after natural cooling is Carbon nitride is co-doped with iodine and sulfur.

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 relates to a preparation method of iodine-sulfur co-doped carbon nitride. The carbon nitride precursor rich in carbon and nitrogen, trimethyl iodosulfonic acid and a solvent are accurately weighed, and the carbon nitride precursor and trimethyl sulfonic acid are accurately weighed. Add iodosulfonic acid to the solvent, stir evenly and keep the temperature at a certain temperature to evaporate the solvent to dryness. The solid obtained above is ground and pulverized and then placed in a muffle furnace for calcination, and the final solid obtained is the iodine-sulfur co-doped carbon nitride. The iodine-sulfur co-doped carbon nitride prepared by the method of the invention has moderate forbidden band width, high separation efficiency of photogenerated carriers, excellent photocatalytic performance, simple preparation process, and is suitable for large-scale promotion.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation, in particular to a preparation method of iodine-sulfur co-doped carbon nitride. Background technique [0002] With the development and progress of human society, people's energy consumption is increasing day by day. The massive consumption of energy makes people directly face the two major problems of fossil energy shortage and environmental pollution. The global energy crisis that broke out in the 1970s aroused great concern from governments around the world. Since entering the 21st century, the energy crisis and environmental pollution problems have become more and more serious. As we all know, the reserves of resources are not unlimited. Fossil energy is not only limited in reserves and expensive to exploit, but also causes pollution and damage to the ecological environment. Among many renewable energy sources, solar energy is favored due to its huge reserves, safe use, green environ...

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
CPCB01J27/24B01J35/39
Inventor 徐少洪王敬锋林琳陈超金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH