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Application of semiconductor composite material loaded with fullerene and derivative thereof in photocatalytic degradation of indoor VOCs

A technology of fullerene derivatives and composite materials, applied in gas treatment, chemical instruments and methods, membrane technology, etc., can solve the problem of low reusability of photocatalytic materials, difficulty in dealing with VOCs pollution, and recombination rate of photogenerated carriers Advanced problems, to achieve a thorough decomposition effect, strong practicability, and strong operability

Inactive Publication Date: 2020-05-08
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology of utilizing ultraviolet photocatalysis usually has the following disadvantages: 1) the utilization rate of solar energy is low; 2) when utilizing ultraviolet light source, harmful products O 3 ; 3) The recombination rate of photogenerated carriers is very high, resulting in low quantum efficiency, and it is difficult to deal with indoor VOCs pollution with large quantities and high concentrations; 4) The reusability of the photocatalytic materials used is extremely low
[0007] However, the application of semiconductor composites loaded with fullerene derivatives in the removal of indoor VOCs pollution has not been reported.

Method used

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  • Application of semiconductor composite material loaded with fullerene and derivative thereof in photocatalytic degradation of indoor VOCs
  • Application of semiconductor composite material loaded with fullerene and derivative thereof in photocatalytic degradation of indoor VOCs
  • Application of semiconductor composite material loaded with fullerene and derivative thereof in photocatalytic degradation of indoor VOCs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0059] Example 1-1 Fullerene loaded TiO 2 Preparation of composite materials

[0060] TiO 2 Preparation of particles: Add 1.7ml tetrabutyl phthalate to 2ml xylene solution with stirring, then add 30ml H 2 O, continue to stir for 1h, transfer the resulting suspension to a 100ml reactor at 180°C for 10h, and cool down after the reaction to obtain a solution containing titanium dioxide nanoparticles. The solution is centrifugally filtered, washed 3 times with toluene, and then washed 3 times with absolute ethanol. times, TiO was obtained after drying overnight in a vacuum oven at 40°C 2 nanoparticles.

[0061] (1)C 60 / TiO 2 Preparation: 4mgC 60 Add 2ml of xylene to ultrasonically dissolve, then add 1.7ml of tetrabutyl phthalate to the solution containing C under stirring 60 xylene solution, followed by adding 30ml of H 2 O, continue to stir for 1h, transfer the resulting suspension to a 100ml reactor at 180°C for 10h, cool down after the reaction to obtain 60 Supported ...

Embodiment 1-2

[0067] Example 1-2 Fullerene Carboxyl Derivatives Loading TiO 2 Preparation of composite materials

[0068] Granular TiO 2 Preparation: Mix 17.5ml of ethanol and 35ml of water with ultrasound for 15min to obtain a mixed solution, then add 3.4ml of tetrabutyl phthalate to another 17.5ml of ethanol, then add tetrabutyl titanate ethanol solution dropwise under stirring into the above mixed solution, continue to stir for 2 hours, transfer the obtained suspension to a 100ml reactor at 180°C for 10 hours, cool down after the reaction to obtain a solution containing titanium dioxide particles, and centrifugally filter the solution, first wash it with deionized water for 3 times, and then use After washing with absolute ethanol for 3 times, and drying overnight in an oven at 80° C., granular titanium dioxide solid powder was obtained.

[0069] C 60 (C(COOH) 2 ) 3 Preparation: According to reference Liu Y H, Liu P X, Lu C. Tunabletribological properties in water-based lubrication ...

Embodiment 1-3

[0081] Example 1-3 Fullerene amino derivatives loaded TiO 2 Preparation of composite materials

[0082] Granular TiO 2 The preparation method is with embodiment 1-2.

[0083] C 60 Aminated derivative C 60 (EDA) n Preparation: Weigh 50 mg of solid fullerene C with an analytical balance 60 Dissolve in 25ml o-xylene solution, ultrasonically disperse for 30min, measure 50mL ethylenediamine with a measuring cylinder, add it to a 100mL conical flask with a stopper, add a magnetic stirrer, and stir for 24h with a magnetic stirrer (temperature: room temperature, speed: 1000r / min), use a solvent filter (volume: 1 L, filter membrane pore size: 200 nm) to obtain a brownish-red solution after suction filtering the reactant. The components of the solution are mainly unreacted ethylenediamine and C 60 (EDA) n and the solvent o-xylene. The obtained solution was added into a 250ml round bottom flask, and then the filtrate was completely dried by rotary evaporation using a rotary eva...

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Abstract

The embodiment of the invention relates to application of a semiconductor composite material loaded with fullerene and a derivative thereof in photocatalytic degradation of indoor VOCs. According to the invention, the fullerene comprises at least one selected from the group consisting of hollow fullerene and metal fullerene; the fullerene derivative comprises at least one selected from the group consisting of a fullerene aminated derivative, a fullerene carboxylated derivative and a fullerene hydroxylated derivative; a semiconductor body in the composite material comprises at least one selected from the group consisting of titanium dioxide, zinc oxide, tin oxide and manganese oxide. According to the composite material, the utilization efficiency of solar energy is high in the process of removing indoor VOCs through photocatalysis; meanwhile, no harmful product O3 is generated in the reaction process, indoor VOCs pollution with large quantity and high concentration can be treated, and the composite material is stable in structure, capable of being repeatedly used, excellent in indoor VOCs pollutant degradation performance and low in cost.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to the application of semiconductor composite materials supported by fullerene and its derivatives in photocatalytic degradation of indoor VOCs. Background technique [0002] With the emergence of a large number of new buildings in our country, indoor air pollution caused by volatile organic compounds (VOC) emitted from building decoration and furniture has seriously endangered people's health and quality of life. VOCs will have obvious adverse effects on the human respiratory system, cardiovascular system and nervous system, and even cause cancer. In the list of atmospheric toxic pollutants formulated by the US Environmental Protection Agency (EPA), there are 50 VOCs. Studies have shown that VOCs pollution is a common indoor phenomenon in my country. Therefore, how to eliminate VOCs in indoor air is a hot issue that urgently needs to be studied and solved in the field of indoor enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44B01D53/88
CPCB01D53/007B01D53/8687B01D53/88B01D2255/802B01D2257/708Y02A50/20
Inventor 王春儒吴波刘丽萍韩伟
Owner INST OF CHEM CHINESE ACAD OF SCI
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