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Binary metal sulfide/carbon nitride composite photocatalytic material and preparation method thereof

A composite photocatalysis, binary metal technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost and limited development, and achieve low synthesis cost, easy storage, Excellent Visible Light Photocatalytic Decomposition of Water for Hydrogen Production

Active Publication Date: 2017-08-04
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of these precious metals is generally high, which limits their development

Method used

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  • Binary metal sulfide/carbon nitride composite photocatalytic material and preparation method thereof
  • Binary metal sulfide/carbon nitride composite photocatalytic material and preparation method thereof
  • Binary metal sulfide/carbon nitride composite photocatalytic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] refer to figure 1 , Take a certain amount of urea and put it in an alumina crucible, cover it and place it in a muffle furnace, heat it to 550°C at a heating rate of 5°C / min and keep it at this temperature for 2h. When the temperature dropped to room temperature, the obtained solid was ground into powder, and then 0.1 g of the above-prepared powder was placed in a muffle furnace for the second temperature-programmed calcination, and heated to 420 °C at a heating rate of 5 °C / min. And keep at this temperature for 2 hours, then raise the temperature to 600°C at a heating rate of 5°C / min and hold for 3h. When the temperature drops to room temperature, the obtained light yellow powder is g-C 3 N 4 Nanosheets. Take 0.145mL of 0.05mol / L ferric nitrate solution, 1.45mL of 0.05mol / L nickel chloride solution, 5.6mL of 0.025mol / L urea solution, and 2mL of 0.0005mol / L trisodium citrate solution in a beaker, add 70.8mL of water, stirred for 10min, then take 1g of g-C 3 N 4 The...

Embodiment 2

[0039] Take a certain amount of urea in an alumina crucible, cover it and place it in a muffle furnace, heat it to 550°C at a heating rate of 5°C / min and keep it at this temperature for 2h. When the temperature dropped to room temperature, the obtained solid was ground into powder, and then 0.1 g of the above-prepared powder was placed in a muffle furnace for the second temperature-programmed calcination, and heated to 420 °C at a heating rate of 5 °C per minute And keep it at this temperature for 2 hours, then raise the temperature to 600 ℃ at a rate of 5 ℃ / min and keep it for 3 hours. When the temperature drops to room temperature, the obtained light yellow powder is g-C 3 N 4 Nanosheets. Take 0.145mL of 0.1mol / L ferric nitrate solution, 1.45mL of 0.1mol / L nickel chloride solution, 5.6mL of 0.05mol / L urea solution, and 2mL of 0.001mol / L trisodium citrate solution in a beaker, add 70.8mL of water, stirred for 10min, then take 1g of g-C 3 N 4 The nanosheets were ultrason...

Embodiment 3

[0044] Take a certain amount of urea in an alumina crucible, cover it and place it in a muffle furnace, heat it to 550°C at a heating rate of 5°C / min and keep it at this temperature for 2h. When the temperature dropped to room temperature, the obtained solid was ground into powder, and then 0.1 g of the above-prepared powder was placed in a muffle furnace for the second temperature-programmed calcination, and heated to 420 °C at a heating rate of 5 °C / min. And keep it at this temperature for 2 hours, then raise the temperature to 600 ℃ at a rate of 5 ℃ / min and keep it for 3 hours. When the temperature drops to room temperature, the obtained light yellow powder is g-C 3 N 4 Nanosheets. Take 0.145mL of 0.25mol / L ferric nitrate solution, 1.45mL of 0.25mol / L nickel chloride solution, 5.6mL of 0.125mol / L urea solution, and 2mL of 0.0025mol / L trisodium citrate solution in a beaker, add 70.8mL of water, stirred for 10min, then take 1g of g-C 3 N 4 The nanosheets were ultrasonic...

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Abstract

The invention provides a binary metal sulfide / carbon nitride composite photocatalytic material and a preparation method thereof. According to the binary metal sulfide / carbon nitride composite photocatalytic material and the preparation method thereof, the binary metal sulfide / carbon nitride composite photocatalytic material is formed by nano sheet-shaped g-C3N4 and a binary metal sulfide nano sheet loaded on the surface of the g-C3N4 nano sheet; and in the composite photocatalytic material, binary metal sulfide accounts for 1%-5% of the mass percent of the g-C3N4. The binary metal sulfide / g-C3N4 composite photocatalytic material has high visible photocatalytic activity and has excellent activity for photocatalytically decomposing water to generate hydrogen by visible light.

Description

technical field [0001] The present invention relates to a kind of binary metal sulfide / g-C 3 N 4 A composite photocatalytic material and a preparation method thereof belong to the fields of material preparation and energy environment. Background technique [0002] At present, environmental degradation and energy shortage have become two important issues that threaten and restrict human survival and development. In order to replace traditional fossil fuels, scientific researchers focus on nuclear energy, ocean energy, hydrogen energy, solar energy, etc. These energy sources have wide sources, low pollution, and can be recycled. Photocatalysis, as a method that can convert solar energy into clean fossil fuels, is a very promising method to solve energy and environmental problems. Many semiconductor photocatalyst materials such as g-C 3 N 4 、TiO 2 , CdS, ZnO, etc. Among them, carbon nitride in the graphite phase is currently the new favorite in the field of photocatalysis...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/08B01J37/04B01J37/20C01B3/04
CPCC01B3/042B01J27/24B01J37/009B01J37/035B01J37/04B01J37/08B01J37/082B01J37/20B01J35/393B01J35/39B01J35/23B01J35/399Y02E60/36
Inventor 曹少文李芳余家国
Owner WUHAN UNIV OF TECH
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