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A kind of copolymerization modified layered graphite phase carbon nitride photocatalyst and its preparation method and application

A technology of phase carbon nitride light and layered graphite, which is applied in the field of preparation of semiconductor nanomaterials and photocatalysis, can solve the problems of few photocatalysts and the like, and achieve the effects of improved hydrogen production effect, simple preparation method and high yield.

Active Publication Date: 2020-11-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, 7,7,8,8-tetracyanoquinodimethane (TCNQ) is mostly used in capacitors, and rarely used in the preparation of photocatalysts.

Method used

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  • A kind of copolymerization modified layered graphite phase carbon nitride photocatalyst and its preparation method and application
  • A kind of copolymerization modified layered graphite phase carbon nitride photocatalyst and its preparation method and application
  • A kind of copolymerization modified layered graphite phase carbon nitride photocatalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 5 g of melamine and 5 mg of TCNQ into a ceramic mortar and grind continuously to obtain a mixed solid powder;

[0024] (2) Spread the mixed solid powder prepared in step (1) evenly in a quartz boat, place it in a tube furnace, raise the temperature to 520°C at a heating rate of 5°C / min in an air atmosphere, keep it for 4 hours and then follow the furnace Cool down to room temperature, make the layered graphitic phase carbon nitride photocatalyst (g-C 3 N 4 / TCNQ 0.1％ ).

Embodiment 2

[0026] (1) Add 5 g of melamine and 10 mg of TCNQ into a ceramic mortar and grind continuously to obtain a mixed solid powder;

[0027] (2) Spread the mixed solid powder prepared in step (1) evenly in a quartz boat, place it in a tube furnace, raise the temperature to 520°C at a heating rate of 5°C / min in an air atmosphere, keep it for 4 hours and then follow the furnace Cool down to room temperature, make the layered graphitic phase carbon nitride photocatalyst (g-C 3 N 4 / TCNQ 0.2％ ).

Embodiment 3

[0029] (1) Add 5 g of melamine and 25 mg of TCNQ into a ceramic mortar and grind continuously to obtain a mixed solid powder;

[0030] (2) Spread the mixed solid powder prepared in step (1) evenly in a quartz boat, place it in a tube furnace, raise the temperature to 520°C at a heating rate of 5°C / min in an air atmosphere, keep it for 4 hours and then follow the furnace Cool down to room temperature, make the layered graphitic phase carbon nitride photocatalyst (g-C 3 N 4 / TCNQ 0.5％ ).

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Abstract

The invention discloses a preparation method and application of a copolymerized modified layered graphite phase carbon nitride photocatalyst, and belongs to the technical fields of material preparation and photocatalysis. Copolymerization to prepare graphite phase carbon nitride photocatalyst with nano-layered structure is prepared through high-temperature copolymerization using melamine and TCNQ as precursors. Compared with traditional bulk carbon nitride, the graphite phase carbon nitride photocatalyst prepared by the invention has enhanced visible light absorption and has efficient photocatalytic hydrogen production performance. The preparation process of the invention is simple, the catalytic efficiency is high, and it has broad potential application prospects in the field of photocatalysis.

Description

technical field [0001] The invention relates to a preparation method and application of a copolymerized modified layered graphite phase carbon nitride photocatalyst, which belongs to the technical field of semiconductor nanomaterial preparation and photocatalysis. Background technique [0002] Energy shortage and environmental problems have become two major problems that human society is currently facing. The development of sustainable, clean and pollution-free new energy is of great significance to solve these two problems and realize the sustainable development of human beings. As a sustainable, non-polluting, universal and huge energy source, solar energy is generally considered to be the best substitute for fossil fuels in today's world. However, solar energy does not have continuity and stability in space and time, so it is still difficult to directly utilize it on a large scale. Photocatalytic water splitting for hydrogen production requires only one step to convert ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C01B3/04
CPCB01J27/24C01B3/042C01B2203/0277C01B2203/1041B01J35/39Y02E60/36
Inventor 潘新花王凤志叶志镇
Owner ZHEJIANG UNIV
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