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

A kind of preparation method of high specific surface area graphitic phase carbon nitride photocatalyst

A technology based on carbon nitride light and high specific surface area, which is applied in the field of photocatalytic materials to achieve the effect of cheap raw materials, high application prospects and practical value, and simple process

Inactive Publication Date: 2019-06-14
GUANGXI UNIV FOR NATITIES
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of porous, high specific surface area graphitic carbon nitride photocatalyst materials by simple and green mechanical grinding treatment of raw materials, followed by calcination, has not yet been reported.

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 high specific surface area graphitic phase carbon nitride photocatalyst
  • A kind of preparation method of high specific surface area graphitic phase carbon nitride photocatalyst
  • A kind of preparation method of high specific surface area graphitic phase carbon nitride photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 30g of urea in a glass mortar with a diameter of 12cm, use a grinding rod to grind vigorously in circles for 2h (average 50 cycles / min) until the raw material is in the form of uniform and fine solid powder; put the ground urea product in a 100mL ceramic crucible (Covered), put it into the muffle furnace and start heating under air atmosphere. The heating parameters are set as follows: heating from room temperature 25-30℃ to 400℃, heating rate 16℃ / min, constant temperature at 400℃ for 2h; Then heat up to 550℃, the heating rate is 16℃ / min, keep the temperature at 550℃ for 2h; naturally cool to room temperature 25~30℃. Grind the obtained light yellow solid to obtain a high specific surface area graphite phase carbon nitride photocatalyst material.

[0021] Such as figure 1 As shown, the graphite phase carbon nitride prepared by the implementation of the present invention has many pore structures and belongs to a porous material.

Embodiment 2

[0023] Weigh 25g of urea in a glass mortar with a diameter of 12cm, use a grinding rod to grind vigorously in circles for 4h (average 50 cycles / min), until the raw material is uniform and fine solid powder; put the ground urea product in a 100mL ceramic crucible (Covered), put it into the muffle furnace and start heating in air atmosphere. The heating parameters are set as follows: heating from room temperature 25-30℃ to 400℃, heating rate 15℃ / min, constant temperature at 400℃ for 2h; Then heat up to 550℃, the heating rate is 15℃ / min, keep constant temperature at 550℃ for 2h; naturally cool to room temperature 25~30℃. Grind the obtained light yellow solid to obtain a high specific surface area graphite phase carbon nitride photocatalyst material.

[0024] Table 1 is the pore size distribution table of the high specific surface area graphite phase carbon nitride prepared in Examples 1 and 2 and the literature graphite phase carbon nitride.

[0025]

[0026] From the data in Table 1...

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
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a high specific surface area graphite phase carbon nitride photocatalyst. The method includes the following steps: (1) mechanically grinding urea to obtain uniform fine solid particles; (2) placing the obtained product in a covered crucible, and performing calcination, constant temperature, and natural cooling in a muffle furnace under air atmosphere , that is, the high specific surface area graphite phase carbon nitride photocatalyst is obtained. The preparation method of high specific surface area graphite phase carbon nitride photocatalyst provided by the invention has cheap raw materials, low cost, green and pollution-free, convenient operation, simple and easy control, effectively increases the specific surface area of ​​graphite phase carbon nitride, and has Good application prospects and potential practical value.

Description

Technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a preparation method of a high-specific surface area graphite phase carbon nitride photocatalyst. Background technique [0002] Graphite carbon nitride is a polymer semiconductor with a graphite-like structure. Its band gap is about 2.7eV. It can absorb blue-violet light with a wavelength of less than 475nm in the solar spectrum, that is, it absorbs in the visible light region. Due to its high stability, unique electronic energy band structure, low cost, non-toxicity, etc., graphite phase carbon nitride is widely used as a new type of non-metallic photocatalyst in environmental pollution and various catalytic reactions, such as photolysis of water to produce hydrogen , Degrade organic pollutants, etc. As we all know, the surface structure of the photocatalyst plays a vital role in the photocatalytic activity, and the increase of the specific surface area is conducive...

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): B01J27/24B01J35/10
CPCB01J27/24B01J35/613B01J35/615B01J35/647B01J35/39
Inventor 黄在银万婷肖明汤焕丰肖碧源左晨
Owner GUANGXI UNIV FOR NATITIES