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Method for synthesizing iron-doped carbonitride photocatalyst

A carbon nitride light and photocatalyst technology, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, special compound water treatment, etc., can solve the problems of loss of photocatalytic ability, photogenerated electrons and holes cannot be effectively separated, etc.

Inactive Publication Date: 2017-02-15
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is also a common problem of organic polymer semiconductors, that is, due to the existence of a large number of defect states in the polymer, the photogenerated electrons and holes have high binding energy, which will make the photogenerated electrons and holes unable to be effectively separated, and it is easy to separate the photogenerated electrons and holes. Composite before redox reaction occurs and loses photocatalytic ability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Take 15g of urea and put it into a dry pot, cover it, roast at 550°C for 3 hours at 1°C / min, and obtain the light yellow carbon nitride powder for later use. Weigh 0.2g of the carbon nitride powder prepared above and dissolve it in 30mL of distilled water, then add 0.070g of ammonium ferrous sulfate, ultrasonically disperse for 30min, centrifuge, and dry at 80°C. An iron-doped carbon nitride photocatalyst was obtained.

Embodiment approach 2

[0015] Change the quality 0.070g of the ferrous ammonium sulfate in embodiment 1 to 0.098g, and other conditions remain unchanged.

Embodiment approach 3

[0017] The quality 0.070g of ferrous ammonium sulfate in embodiment 1 is changed into 0.140g, and other conditions are unchanged.

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PUM

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Abstract

The invention relates to a method for synthesizing a novel photocatalytic material and belongs to the field of inorganic photocatalytic materials. The photocatalytic material comprises iron-doped carbonitride. The photocatalytic material prepared by the method has photocatalytic activity in a wavelength range of 400 to 800nm, realizes photocatalytic oxidative degradation of pollutants under visible light or natural light irradiation, and has good stability.

Description

technical field [0001] The invention relates to a novel photocatalytic material. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the use of the catalysts described above. Background technique [0004] Carbon nitride has been found to have the advantages of easy mass synthesis, high stability, strong light absorption performance and electronic conductor, etc. It has become a research hotspot in the field of photocatalysis in recent years. However, there is also a common problem of organic polymer semiconductors, that is, due to the existence of a large number of defect states in the polymer, the photogenerated electrons and holes have high binding energy, which will make the photogenerated electrons and holes unable to be effectively separated, and it is easy to separate the photogenerated electrons and holes. Before the oxidation-reduction reaction occurs, it recombines and loses its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30
CPCC02F1/30B01J27/24C02F2305/10B01J35/39
Inventor 张淑娟杨金凤宋立民
Owner TIANJIN UNIV OF SCI & TECH