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Graphite phase-like carbon nitride/tetracarboxylphenylporphyrin nano-composite material and preparation method therefor

A nano-composite material, phenyl porphyrin technology, applied in the field of electroanalytical chemistry, can solve the problems of low photogenerated electron-hole composite quantum efficiency, inability to effectively utilize sunlight, restricting large-scale popularization and application, etc., so as to improve light energy. utilization, improving photocatalytic performance, and the effect of good photoelectrochemical properties

Inactive Publication Date: 2016-05-25
黑龙江臻旸生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But due to the material properties of the polymer, the g-C 3 N 4 As a photocatalyst, there are still some problems, such as small specific surface area, high exciton binding energy for photogenerated carriers, serious photogenerated electron-hole recombination, low quantum efficiency, and large band gap that cannot effectively use sunlight. Restricting its large-scale application in the field of energy and environmental photocatalysis

Method used

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  • Graphite phase-like carbon nitride/tetracarboxylphenylporphyrin nano-composite material and preparation method therefor
  • Graphite phase-like carbon nitride/tetracarboxylphenylporphyrin nano-composite material and preparation method therefor
  • Graphite phase-like carbon nitride/tetracarboxylphenylporphyrin nano-composite material and preparation method therefor

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Effect test

Embodiment 1

[0028] The preparation method of a graphite-like carbon nitride / tetracarboxyphenylporphyrin nanocomposite material of the present invention is:

[0029] (1) Weigh 5g of melamine solid sample into a 25ml porcelain crucible, cover the crucible and put it into the muffle furnace, heat up to 550°C at a rate of 4°C / min, and keep it at 550°C for 4 hours , Then lower to room temperature, take out the crucible, and obtain graphite-like carbon nitride, which is a light yellow solid; the crucible is covered without any protective gas during the whole process; it is ground into powder for later use;

[0030] (2) Weigh 0.2 g of the graphite-like carbon nitride powder prepared in step (1), add 10 ball milling beads and stir for 2.5 hours at 400 rpm;

[0031] (3) Take out the carbon nitride powder and clean the ball milling tank, put 10mg tetracarboxyphenylporphyrin, 200mg carbon nitride powder and 10 ball milling beads into the ball milling tank together, and stir at 300rpm for 40min. The obtain...

Embodiment 2

[0036] The preparation method of a graphite-like carbon nitride / tetracarboxyphenylporphyrin nanocomposite material of the present invention is:

[0037] (1) Weigh 8g solid sample of melamine into a 25ml porcelain crucible, cover the crucible and put it in the muffle furnace, heat up to 550°C at a rate of 4°C / min, and keep it at 550°C for 4.5 hours , Then lower to room temperature, take out the crucible, and obtain graphite-like carbon nitride, which is a light yellow solid; the crucible is covered without any protective gas during the whole process; it is ground into powder for later use;

[0038] (2) Weigh 0.2g of the graphite-like carbon nitride powder prepared in step (1), add 12 ball milling beads and stir at 350rpm for 2h;

[0039] (3) Take out the carbon nitride powder and clean the ball mill tank, put 10 mg of tetracarboxyphenyl porphyrin, 200 mg of carbon nitride powder and 12 ball milling beads into the ball mill tank, and stir for 50 min at 350 rpm. The obtained solid is t...

Embodiment 3

[0041] The preparation method of a graphite-like carbon nitride / tetracarboxyphenylporphyrin nanocomposite material of the present invention is:

[0042] (1) Weigh 10g solid sample of melamine into a 25ml porcelain crucible, cover the crucible and put it into the muffle furnace, heat up to 550°C at a rate of 5°C / min, and keep it at 550°C for 4 hours , Then lower to room temperature, take out the crucible, and obtain graphite-like carbon nitride, which is a light yellow solid; the crucible is covered without any protective gas during the whole process; it is ground into powder for later use;

[0043] (2) Weigh 0.2g of the graphite-like carbon nitride powder prepared in step (1), add 15 ball milling beads and stir at 300rpm for 3h;

[0044] (3) Take out the carbon nitride powder and clean the ball mill tank, put 10mg tetracarboxyphenylporphyrin, 200mg carbon nitride powder and 15 ball milling beads into the ball mill tank together, and stir for 30min at 400rpm. The obtained solid is th...

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Abstract

The invention provides a preparation method for a graphite phase-like carbon nitride / tetracarboxylphenylporphyrin nano-composite material. The nano-composite material is obtained with a solid-phase ball milling method. The invention furthermore provides an application of the graphite phase-like carbon nitride / tetracarboxylphenylporphyrin nano-composite material to the photocatalysis. The preparation method is simple, low in cost and easy to operate, and can shorten the reaction time to a very great extent. The nano-composite material has relatively good photoelectrochemical property, relatively good photocatalytic performance and good sensitization property and stability, and plays an important role in the aspects of organic pollutant degradation and dye photocatalytic degradation.

Description

technical field [0001] The invention belongs to the technical field of electroanalytical chemistry, and in particular relates to a graphite-like carbon nitride / tetracarboxyphenylporphyrin nanocomposite material and a preparation method thereof. Background technique [0002] With the rapid development of society and economy, energy crisis and environmental degradation have become global problems that need to be solved urgently. How to develop efficient, environmentally friendly, and low-cost energy has become urgent. As an ideal, efficient, and renewable energy source, solar energy has attracted more and more researchers' attention, so scientists have devoted a lot of work to the preparation and application of photosensitized materials. Most of the photosensitizing materials are inorganic semiconductors, so researchers are also looking for new polymer semiconductors in recent years. Polymer semiconductor graphitic carbon nitride (g-C 3 N 4 ), because of its unique semicon...

Claims

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Application Information

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IPC IPC(8): B01J31/04C02F1/30C02F101/38
CPCC02F1/30B01J31/04C02F2101/308C02F2101/38C02F2305/10B01J35/39
Inventor 卢小泉李文奇宁星铭何笑张静严小雨马琴单益江
Owner 黑龙江臻旸生物科技有限公司
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