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A preparation method based on iron oxide doped graphite phase carbon nitride composite material

A graphite phase carbon nitride and composite material technology, applied in the direction of iron oxide/iron hydroxide, iron oxide, nitrogen compounds, etc., can solve the problems of easy agglomeration of active sites, high electron-hole pair recombination rate, and reduce the Effect of recombination efficiency, facile preparation process, and excellent photoelectrochemical performance

Active Publication Date: 2019-05-31
无锡智慧兴宜信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure Fe 2 o 3 The active sites on the surface are less and easy to agglomerate, and the recombination rate of electron-hole pairs is high, which often limits Fe 2 o 3 Applications as a class of photoelectric materials in the field of photoelectrochemistry

Method used

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  • A preparation method based on iron oxide doped graphite phase carbon nitride composite material
  • A preparation method based on iron oxide doped graphite phase carbon nitride composite material
  • A preparation method based on iron oxide doped graphite phase carbon nitride composite material

Examples

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Effect test

Embodiment 1

[0027] (1) Preparation of iron-based ionic liquid: at room temperature, weigh 20g T 8 Cl (trioctylmethylammonium chloride) was stirred in a 50mL round bottom flask, and 13.376g FeCl was added 3 ·6H 2 O. After stirring evenly, the three-neck flask was placed in an oil bath at 40°C, and stirred for 24 hours. After the reaction was completed, the reactant was filtered and then dried in a blast oven at 50° C. for 24 hours. The prepared iron-based ionic liquid T 8 Cl / FeCl 3 Sealed and kept for later use.

[0028] (2) Weigh 5 mmol of cyanuric chloride, add it into a polytetrafluoroethylene-lined reaction kettle, then measure 20 mL of acetonitrile and add it into the reaction kettle, stir magnetically at room temperature for a certain period of time until the cyanuric chloride dissolves. Finally, 2.5 mmol of melamine was weighed and slowly added to the reaction kettle. After magnetic stirring at room temperature for 15 minutes, the reaction was performed in a high-temperature s...

Embodiment 2

[0034] (1) Preparation of iron-based ionic liquid: at room temperature, weigh 15g T 8 Cl (trioctylmethylammonium chloride) was stirred in a 50mL round bottom flask, and 10.032g FeCl was added 3 ·6H 2 O. After stirring evenly, the three-neck flask was placed in an oil bath at 40°C, and stirred for 24 hours. After the reaction was completed, the reactant was filtered and then dried in a blast oven at 50° C. for 24 hours. The prepared iron-based ionic liquid T 8 Cl / FeCl 3 Sealed and kept for later use.

[0035] (2) Weigh 3.5 mmol of cyanuric chloride, add it into a polytetrafluoroethylene-lined reaction kettle, then measure 20 mL of acetonitrile and add it into the reaction kettle, stir magnetically at room temperature for a certain period of time until the cyanuric chloride dissolves. Finally, 1.75 mmol of melamine was weighed and slowly added to the reaction kettle. After magnetic stirring at room temperature for 15 minutes, the reaction was performed in a high-temperatur...

Embodiment 3

[0041] (1) Preparation of iron-based ionic liquid: at room temperature, weigh 10g T 8 Cl (trioctylmethylammonium chloride) was stirred in a 50mL round bottom flask, and 6.688g FeCl was added 3 ·6H 2 O. After stirring evenly, the three-neck flask was placed in an oil bath at 40°C, and stirred for 24 hours. After the reaction was completed, the reactant was filtered and then dried in a blast oven at 50° C. for 24 hours. The prepared iron-based ionic liquid T 8 Cl / FeCl 3 Sealed and kept for later use.

[0042] (2) Weigh 2.5mmol of cyanuric chloride, add it into a polytetrafluoroethylene-lined reaction kettle, then measure 20mL of acetonitrile into the reaction kettle, stir magnetically at room temperature for a certain period of time until the cyanuric chloride dissolves. Finally, 1 mmol of melamine was weighed and slowly added to the reaction kettle. After magnetic stirring at room temperature for 15 minutes, the reaction was performed in a high-temperature solvent heating...

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Abstract

The invention provides a preparation method of a Fe2O3 (ferric oxide) doped graphite phase based C3N4 (carbon nitride) composite. The preparation method comprises steps as follows: step 1, preparation of an iron-based ionic liquid; step 2, preparation of C3N4; step 3, preparation of a C3N4 / Fe2O3 photoelectric composite. According to the C3N4 / Fe2O3 photoelectric composite prepared with the method, C3N4 is introduced for construction of P-N junctions, the carrier migration rate of the material is increased, the composite efficiency of electron-hole pairs is reduced, and the prepared C3N4 / Fe2O3 photoelectric composite has excellent photoelectrochemical performance.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to a method for preparing a graphite-phase carbon nitride-doped iron oxide composite material. Background technique [0002] Since the emergence of the photoelectric phenomenon, photoelectrochemical (PEC) research has made great contributions to realizing high-efficiency photoelectric conversion, effectively solving the energy crisis, reducing or controlling environmental pollution, etc., and its application prospects are very broad. The photoelectrochemical process to achieve photoelectric conversion is essentially that the photoelectrode material absorbs a large number of photons after being illuminated, and the internal electrons are excited from the valence band to the conduction band, and then holes are generated in the valence band. The electrons and holes are effectively separated, and the electrons on the conduction band are transferred to the electrode surface, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/06C01B21/082B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B21/0605C01G49/06C01P2002/72C01P2002/82C01P2002/84C01P2002/85C01P2004/04C01P2004/64C01P2004/80C01P2006/40
Inventor 程秀美严鹏程徐丽田玉辉夏杰祥李华明
Owner 无锡智慧兴宜信息技术有限公司
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