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Covalence triazine organic polymer visible-light-driven photocatalyst and preparing method and application thereof

A covalent triazine, polymer technology, applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the sample containing metal inorganic salt impurities, preparation conditions Harsh and other problems, to achieve high practical value and application prospects, low production cost, good material stability

Active Publication Date: 2015-04-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a covalent triazine organic polymer visible light catalyst and its preparation method and application, to provide new materials for solving current energy and environmental problems, and to solve the existing preparation conditions for preparing covalent triazine organic polymers at the same time Harsh, the obtained samples contain metal inorganic salt impurities and other problems

Method used

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  • Covalence triazine organic polymer visible-light-driven photocatalyst and preparing method and application thereof
  • Covalence triazine organic polymer visible-light-driven photocatalyst and preparing method and application thereof
  • Covalence triazine organic polymer visible-light-driven photocatalyst and preparing method and application thereof

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Embodiment 1

[0018] Under the condition of stirring at 0 °C, take 10 mL of trifluoromethanesulfonic acid and add it to 1.28 g of terephthalonitrile, replace the oil bath and heat up to 30 °C until the mixture becomes viscous and cannot be stirred. After standing for 3 days , rinsed and filtered with 40 mL of dichloromethane, then washed with ammonia water until the pH was greater than 7, then added 50 mL of ammonia water, stirred for 12 h, washed with water and centrifuged to pH 7, and finally washed and centrifuged with methanol once to obtain a solid precipitate; the above obtained The solid precipitated, refluxed with methanol at 90 °C for 12 h, then refluxed with dichloromethane at 65 °C for 12 h, and vacuum dried at 80 °C for 12 h, which was a covalent triazine organic polymer with a yield of 78.1 %.

Embodiment 2

[0020] Under the condition of stirring at 0 °C, take 10 mL of trifluoromethanesulfonic acid and add it to 1.28 g of terephthalonitrile, replace the oil bath and heat up to 30 °C until the mixture becomes viscous and cannot be stirred. After standing for 3 days , rinsed and filtered with 40 mL of dichloromethane, then washed with ammonia water until the pH was greater than 7, then added 50 mL of ammonia water, stirred for 12 h, washed with water and centrifuged to pH 7, and finally washed and centrifuged with methanol once to obtain a solid precipitate; the above obtained The solid precipitated, refluxed with methanol at 100 °C for 12 h, then refluxed with dichloromethane at 80 °C for 12 h, and vacuum dried at 80 °C for 12 h, which was a covalent triazine organic polymer with a yield of 60.9 %.

Embodiment 3

[0022] Under the condition of stirring at 0 °C, 40 mL of trifluoromethanesulfonic acid was added to 5.12 g of terephthalonitrile, the oil bath was replaced and the temperature was raised to 30 °C until the mixture became viscous and could not be stirred. After standing for 3 days , rinsed and filtered with 160 mL of dichloromethane, then washed with ammonia water until the pH was greater than 7, then added 200 mL of ammonia water, stirred for 12 h, washed with water and centrifuged to pH 7, and finally washed and centrifuged with methanol once to obtain a solid precipitate; the above obtained The solid precipitated, refluxed with methanol at 90 °C for 12 h, then refluxed with dichloromethane at 65 °C for 12 h, and vacuum dried at 80 °C for 12 h, which was a covalent triazine organic polymer with a yield of 60.5 %.

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Abstract

The invention discloses a covalence triazine organic polymer visible-light-driven photocatalyst and the preparing method and application thereof and belongs to the technical field of material preparation and photocatalysis. According to the method, normal-temperature liquid-phase polymerization is adopted, para-phthalonitrile serves as the monomer, trimerization is conducted under the catalysis of trifluoromethanesulfonic acid, and then the covalence triazine organic polymer visible-light-driven photocatalyst is prepared. By means of the photocatalyst, visible-light reaction is achieved, hydrogen production through water photolysis can be achieved without obvious inactivation, and organic pollutants in waste water can be effectively degraded. The preparing condition is mild, production cost is low, yield is high, actual production requirements are met, and application potential is great.

Description

Technical field [0001] The invention is the field of material preparation and photocatalytic technology, which involves a common price triazine organic polymer visible photocatalyst and its preparation methods and applications. Background technique [0002] Energy shortage and environmental problems are major issues facing and urgently needed to solve in the 21st century.Semiconductor photocatalytic technology is considered an ideal technology that can solve energy crisis and environmental problems.However, traditional TIO 2 The problem of narrow light response and low solar utilization rate of photocatalysts in an equivalent of the photocatalyst, which seriously restricts the development of photocatalytic technology.The key to solving these problems is still concentrated on the development of photocatalys.Therefore, domestic and foreign scholars have done a lot of exploration work in developing and studying visible light responses. For example, a series of inorganic photocatalys...

Claims

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Application Information

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IPC IPC(8): B01J31/06C02F1/30C01B3/04
CPCY02E60/36Y02W10/37
Inventor 毕进红方伟李留义梁诗景刘明华
Owner FUZHOU UNIV
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