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

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...

Examples

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...

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...

Examples

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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