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Method for preparing gadolinium-doped graphite-like carbon nitride photocatalytic material

A graphite phase carbon nitride and phase carbon nitride light technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of photocatalytic activity reduction and achieve simple preparation process, Good application prospects and superior photocatalytic performance

Inactive Publication Date: 2018-10-23
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the photocatalytic reaction of pure graphite-like carbon nitride, the photogenerated electrons and holes are very easy to recombine, which leads to the reduction of its photocatalytic activity.

Method used

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  • Method for preparing gadolinium-doped graphite-like carbon nitride photocatalytic material
  • Method for preparing gadolinium-doped graphite-like carbon nitride photocatalytic material
  • Method for preparing gadolinium-doped graphite-like carbon nitride photocatalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of gadolinium-doped graphite-like carbon nitride photocatalytic material, the preparation steps are as follows:

[0027] Step 1: Preparation of graphite-like phase carbon nitride.

[0028] (1) Weigh melamine into a ceramic crucible, place the ceramic crucible with a lid and place it in a tubular heating furnace at a heating rate of 5℃ / min to 550℃ and heat for 4 hours to obtain light yellow graphite-like phase nitrogen Carbon nanomaterials are converted, and then pulverized for use.

[0029] Step 2: Preparation of gadolinium-doped graphite-like carbon nitride photocatalytic material.

[0030] (1) Weigh 3g of the graphite-like carbon nitride nanomaterial prepared in step 1 into a beaker, add 10ml of ethylene glycol and 30ml of deionized water to the mixed solution, stir for 30min and then ultrasonicate for 30min to obtain a homogeneous mixture mixture.

[0031] (2) Add 0.02 g of solid gadolinium nitrate hexahydrate to the well-mixed mixture in (1) and continu...

Embodiment 2

[0034] A preparation method of gadolinium-doped graphite-like carbon nitride photocatalytic material, the preparation steps are as follows:

[0035] Step 1: Same as Example 1.

[0036] Step 2: Preparation of gadolinium-doped graphite-like carbon nitride photocatalytic material.

[0037] (1) Weigh 3g of the graphite-like carbon nitride nanomaterial prepared in step 1 into a beaker, add 30ml of ethylene glycol and 60ml of deionized water to the mixed solution, stir for 30min and then sonicate for 30min to obtain a homogeneous mixture mixture.

[0038] (2) Add 0.05 g of solid gadolinium nitrate hexahydrate to the well-mixed mixture in (1) and continue magnetic stirring for 1 hour. After the stirring is completed, transfer it to a reactor with a capacity of 100ml and a polytetrafluoroethylene lining, and react in an oven at 180°C for 12h.

[0039] (3) After the reaction is completed and cooled to room temperature, the precipitate is separated by centrifugation. Wash the precipitate twice...

Embodiment 3

[0041] A preparation method of gadolinium-doped graphite-like carbon nitride photocatalytic material, the preparation steps are as follows:

[0042] Step 1: Same as Example 1.

[0043] Step 2: Preparation of gadolinium-doped graphite-like carbon nitride photocatalytic material.

[0044] (1) Weigh 3g of the graphite-like carbon nitride nanomaterial prepared in step 1 into a beaker, add 10ml of ethylene glycol and 30ml of deionized water to the mixed solution, stir for 30min and then ultrasonicate for 30min to obtain a homogeneous mixture mixture.

[0045] (2) Add 0.07 g of solid gadolinium nitrate hexahydrate to the well-mixed mixture in (1) and continue magnetic stirring for 1 hour. After the stirring is complete, transfer it to a 50ml reactor lined with polytetrafluoroethylene material, and react in an oven at 180°C for 12h.

[0046] (3) After the reaction is completed and cooled to room temperature, the precipitate is separated by centrifugation. Wash the precipitate twice with dei...

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Abstract

A method for preparing a gadolinium-doped graphite-like carbon nitride photocatalytic material is disclosed. Gadolinium nitrate hexahydrate, melamine and ethylene glycol are used as main raw materials. The gadolinium-doped graphite-like carbon nitride photocatalytic material is prepared by solvothermal synthesis. The photocatalytic activity of the prepared material is tested by using visible light(lambda> 420 nm) as a light source. The excellent photocatalytic performance of the material under the visible light is proved by degrading of toxic organic pollutants such as methyl orange, rhodamine B and methylene blue in water. The composite material belongs to an inorganic photocatalytic material and has strong photocatalytic ability to degrade the organic pollutants, and the composite material has good application prospects in environmental protection and water pollution control, also has a broad development space in use of solar energy to develop and utilize new energy. The method hasthe advantages of simple preparation process and easy control of reaction conditions.

Description

Technical field [0001] The invention relates to a preparation method of a gadolinium-doped graphite-like phase carbon nitride photocatalytic material, and specifically belongs to the field of photocatalytic material preparation. Background technique [0002] Water is an indispensable substance for living things and the source of all things. However, since the 21st century, due to the continuous acceleration of the process of industrialization and the massive growth of the population, human beings are also suffering from environmental pollution, especially water pollution, while enjoying modern civilization. People have been looking for solutions for water pollution. Method. In recent years, the use of renewable energy to solve environmental pollution has become the focus of scientific research. It is under this background that the use of solar energy, a renewable energy source, to solve the problem of environmental pollution has become a hot topic for researchers. [0003] Nano-...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/03B01J37/08B01J37/10B01J37/34C02F1/30C02F101/34C02F101/38C02F101/36C02F101/30
CPCC02F1/30B01J27/24B01J37/031B01J37/088B01J37/10B01J37/343C02F2305/10C02F2101/36C02F2101/34C02F2101/40C02F2101/38C02F2101/30C02F2101/308B01J35/39
Inventor 谢宇孙朝阳
Owner NANCHANG HANGKONG UNIVERSITY
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