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A fluorine-modified boron-carbon-nitrogen photocatalytic material and its application in efficient reduction of carbon dioxide

A photocatalytic material, carbon dioxide technology, applied in the field of photocatalytic materials, can solve the problems of high cost, inefficiency, environmental pollution, etc., and achieve the effects of mechanical wear resistance, low cost, and low environmental pollution

Active Publication Date: 2021-03-30
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fluorine-modified boron-carbon-nitrogen photocatalytic material and its application in the efficient reduction of carbon dioxide, which can solve the inefficiency, high cost and Environmental pollution and other issues

Method used

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  • A fluorine-modified boron-carbon-nitrogen photocatalytic material and its application in efficient reduction of carbon dioxide
  • A fluorine-modified boron-carbon-nitrogen photocatalytic material and its application in efficient reduction of carbon dioxide
  • A fluorine-modified boron-carbon-nitrogen photocatalytic material and its application in efficient reduction of carbon dioxide

Examples

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Effect test

Embodiment 1

[0025] Completely dissolve 2g of boron oxide, 4g of urea, and 0.6g of glucose in 40-50ml of deionized water. After evaporating all the water at 75°C under normal pressure, place the resulting mixture in a corundum porcelain boat, and then place it in In a horizontal high-temperature tube furnace, the temperature was raised to 1250 °C at a rate of 5 °C / min in an ammonia atmosphere, and then kept for 5 h. After the sample was taken out, it was washed with 0.1 mol / L dilute hydrochloric acid, centrifuged, and dried to obtain Graphite phase boron carbon nitrogen powder; mix potassium fluoride with the obtained boron carbon nitrogen powder at a mass ratio of 0.4:1, grind them evenly, place them in a muffle furnace, and heat up to 400°C at a rate of 5°C / min in an air atmosphere , and then keep warm for 3 hours; after cooling to room temperature, take out the sample, fully wash with deionized water, suction filter, and dry to obtain the fluorine-modified boron carbon nitrogen photocata...

Embodiment 2

[0034] Completely dissolve 2g of boron oxide, 4g of urea, and 0.6g of glucose in 40-50ml of deionized water. After evaporating all the water at 75°C under normal pressure, place the resulting mixture in a corundum porcelain boat, and then place it in In a horizontal high-temperature tube furnace, the temperature was raised to 1250 °C at a rate of 5 °C / min in an ammonia atmosphere, and then kept for 5 h. After the sample was taken out, it was washed with 0.1 mol / L dilute hydrochloric acid, centrifuged, and dried to obtain Graphite phase boron carbon nitrogen powder; mix potassium fluoride with the obtained boron carbon nitrogen powder at a mass ratio of 0.2:1, grind them evenly, place them in a muffle furnace, and heat up to 400°C at a rate of 5°C / min in an air atmosphere , and then keep warm for 3 hours; after cooling to room temperature, take out the sample, fully wash with deionized water, suction filter, and dry to obtain the fluorine-modified boron carbon nitrogen photocata...

Embodiment 3

[0036] Completely dissolve 2g of boron oxide, 4g of urea, and 0.6g of glucose in 40-50ml of deionized water. After evaporating all the water at 75°C under normal pressure, place the resulting mixture in a corundum porcelain boat, and then place it in In a horizontal high-temperature tube furnace, the temperature was raised to 1250 °C at a rate of 5 °C / min in an ammonia atmosphere, and then kept for 5 h. After the sample was taken out, it was washed with 0.1 mol / L dilute hydrochloric acid, centrifuged, and dried to obtain Graphite phase boron carbon nitrogen powder; mix potassium fluoride with the obtained boron carbon nitrogen powder at a mass ratio of 0.3:1, grind them evenly, place them in a muffle furnace, and heat up to 400°C at a rate of 5°C / min in an air atmosphere , and then keep warm for 3 hours; after cooling to room temperature, take out the sample, fully wash with deionized water, suction filter, and dry to obtain the fluorine-modified boron carbon nitrogen photocata...

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Abstract

The invention discloses a fluorine-modified boron carbon nitrogen photocatalytic material and its application in efficient reduction of carbon dioxide, and belongs to the field of photocatalytic materials. The fluorine-modified boron carbon-nitrogen photocatalytic material is made by heat treatment reaction of graphite-phase boron carbon-nitrogen synthesized by high-temperature thermal polymerization and potassium fluoride. It is an inorganic non-metallic copolymer material with stability. Strong, resistant to chemical corrosion, high temperature resistance, good thermal conductivity and visible light response, it can catalytically reduce carbon dioxide gas driven by visible light, expanding the current catalytic materials for photocatalytic reduction of carbon dioxide, which mainly use (noble) metal oxygen (or sulfur) It is mainly chemical-based and has problems such as high cost, instability and environmental pollution. Its preparation method is simple, the raw materials are cheap and easily available, it has low environmental pollution, and it is easy to produce on a large scale, and it has significant economic and social benefits.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, in particular to a fluorine-modified boron carbon nitrogen photocatalytic material and its application in efficient reduction of carbon dioxide. Background technique [0002] At present, the recycling of carbon resources has been widely concerned by the international community. Using light energy to drive the conversion of carbon dioxide to realize the storage of low-density solar energy to high-density chemical energy is considered to be an ideal green and environmentally friendly way, which can not only alleviate the greenhouse effect, but also deal with the current energy crisis. At present, the research on catalytic materials for photocatalytic carbon dioxide reduction mainly focuses on semiconductors such as metal oxides or sulfides, but these metal compounds often have some problems such as low efficiency, non-response to visible light, chemical instability, etc., and the cost of met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C01B32/40
CPCC01B32/40B01J27/24B01J35/39
Inventor 黄彩进邢芳舒刘秋文
Owner FUZHOU UNIV
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