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Synthetic method and application of visible-light responding carbon nitride/iron sesquioxide nano composite

A nano-composite material, ferric oxide technology, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of high photogenerated electron-hole recombination rate and carbon nitride ratio Low surface area, low utilization rate of solar energy, etc., to achieve the effect of simple process, low price of raw materials, and improved photocatalytic ability

Inactive Publication Date: 2015-09-09
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of low photocatalytic activity caused by the low specific surface area of ​​existing carbon nitride, low solar energy utilization rate and high recombination rate of photogenerated electrons and holes, the present invention provides a carbon nitride / dioxide trioxide with visible light response. Synthesis method and application of photocatalyst of iron nanocomposite material

Method used

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  • Synthetic method and application of visible-light responding carbon nitride/iron sesquioxide nano composite
  • Synthetic method and application of visible-light responding carbon nitride/iron sesquioxide nano composite
  • Synthetic method and application of visible-light responding carbon nitride/iron sesquioxide nano composite

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Embodiment 1

[0023] Example 1 Preparation of Carbon Nitride / Fe2O3 Composite Material

[0024] Put 2.5g of melamine and 8.0g of ferric nitrate powder into a round bottom flask with 200ml of methanol as the solvent. Put the round-bottomed flask in a constant temperature magnetic stirrer, react for 3 hours, filter to obtain the precursor, put the prepared material into a porcelain boat, put it into a tube furnace, and heat up at a rate of 1 °C / min in an argon atmosphere. The room temperature was raised to 400° C. and kept at a constant temperature for 3 hours, and the argon flow rate was 60 cc / min. After cooling to room temperature, the carbon nitride / Fe2O3 nanocomposite material was obtained.

Embodiment 2

[0025] Example 2 Preparation of Carbon Nitride / Fe2O3 Composite Material

[0026] Put 2.5g of melamine and 8.0g of ferric nitrate powder into a round bottom flask with 200ml of methanol as the solvent. Put the round-bottomed flask in a constant temperature magnetic stirrer, react for 3 hours, filter to obtain the precursor, put the prepared material into a porcelain boat, put it into a tube furnace, and heat up at a rate of 2°C / min in an argon atmosphere. The room temperature was raised to 500°C and kept at a constant temperature for 3 hours, and the argon flow rate was 70 cc / min. After cooling to room temperature, the carbon nitride / Fe2O3 nanocomposite material was obtained.

Embodiment 3

[0027] Example 3 Preparation of Carbon Nitride / Fe2O3 Composite Material

[0028] Put 2.5g of melamine and 8.0g of ferric nitrate powder into a round bottom flask with 200ml of methanol as the solvent. Put the round-bottom flask in a constant temperature magnetic stirrer, react for 3 hours, filter to obtain the precursor, put the prepared material into a porcelain boat, put it into a tube furnace, and press the heating rate of 3 °C / min in an argon atmosphere. The room temperature was raised to 550°C and kept at a constant temperature for 3 hours, and the argon flow rate was 80 cc / min. After cooling to room temperature, the carbon nitride / Fe2O3 nanocomposite material was obtained.

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Abstract

The invention discloses a synthetic method and application of a visible-light responding carbon nitride / iron sesquioxide nano composite, belongs to the fields of composite preparation technologies and photocatalysis and aims to solve the problems that a conventional carbon nitride material is small in specific surface area, high in photon-generated electron-hole recombination rate, low in solar energy utilization ratio and the like. The composite is prepared by taking melamine and iron nitrate as raw materials and methanol as a solvent and adopting the chemical reaction method and the heat treating process. Compared with carbon nitride, the prepared carbon nitride / iron sesquioxide nano composite has a wider light absorption range (expanded from the ultraviolet region to the visible region), greatly improves the solar energy utilization ratio, meanwhile, has a larger specific surface area, is low in photon-generated electron-hole recombination rate, and can effectively degrade Rhodamin B under visible light. The advantages that the preparation technology is simple, the raw material cost is low, mass production is available, and the obtained composite is large in specific surface area, high in solar energy utilization ratio, excellent in catalytic performance, and good in application prospect are achieved.

Description

technical field [0001] The invention relates to a preparation method and photocatalytic application of a composite material, in particular to a preparation method and application of a carbon nitride / ferric oxide nanocomposite material, and belongs to the field of composite material preparation technology and photocatalysis. Background technique [0002] Industrial wastewater contains a large amount of pollutants, especially the sewage discharged from the printing and dyeing industry contains a large amount of organic dyes, which has a huge impact on people's living environment. Therefore, it is necessary to study mild, cheap, stable physical and chemical properties, and strong photocatalytic ability to degrade organic dyes in water, so as to ensure the reduction of environmental damage during industrial production and achieve sustainable economic development. [0003] Due to environmental and energy issues, it is imminent to find photocatalysts that can convert solar energy ...

Claims

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Application Information

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IPC IPC(8): B01J27/24C02F1/30C02F101/30
CPCY02W10/37
Inventor 高俊阔王江鹏姚菊明
Owner ZHEJIANG SCI-TECH UNIV
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