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Preparation method of iron-modified TiO2/GO ternary composite material for degradaging VOCs (volatile organic compounds)

A composite material, SO4 technology, applied in separation methods, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as low photocatalytic efficiency

Inactive Publication Date: 2018-08-03
CHANGCHUN UNIV OF TECH
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Problems solved by technology

[0004] The invention provides an iron-modified TiO for degrading VOCs 2 / GO composite preparation method, in order to solve TiO 2 The problem of low photocatalytic efficiency, studied iron-modified TiO 2 / GO Composite Preparation Method

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  • Preparation method of iron-modified TiO2/GO ternary composite material for degradaging VOCs (volatile organic compounds)
  • Preparation method of iron-modified TiO2/GO ternary composite material for degradaging VOCs (volatile organic compounds)

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[0008] specific implementation plan

[0009] 10 mg of GO was weighed, dissolved in 30 ml of deionized water, and the solution was sonicated for 1 h to obtain a GO dispersion. Weigh 100 mg of Ti(SO 4 ) 2 , mixed with the GO dispersion, placed on a magnetic stirrer, stirred for 1 h, so that the Ti(SO 4 ) 2 Mix well with GO and weigh 10 mg FeCl 3 Add it into the mixed solution, stir for 2.5 h, mix evenly, slowly pour the obtained mixed solution into a polytetrafluoroethylene-lined reactor, under the pressure of 2 MPa, the reaction temperature is 210 ℃, and the hydrothermal reaction is carried out under the assistance of microwave 8 h, after the reaction was completed and naturally cooled down to room temperature, the suspension in the reactor was taken out, washed and centrifuged with 60 ml of deionized water, placed in a vacuum drying oven, and dried at 80°C for 24 h to obtain Fe- TiO 2 / GO Composite. The composite material is used as the photocatalytic filler of the phot...

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Abstract

The invention relates to a preparation method of an iron-modified TiO2 / GO ternary composite material for degradaging VOCs (volatile organic compounds). Through a one-step microwave-assisted hydrothermal method, ferric chloride (FeCl3), GO and titanium sulfate (Ti(SO4)2) are sufficiently mixed, the mixture is put into a reaction kettle, and under the assistance of microwaves, hydrothermal reactionis carried out, so that the iron-modified titanium dioxide / graphene Fe-TiO2 / GO composite material is prepared. The composite material can be adopted as filler and an auxiliary material in a photocatalysis device to photocatalytically degrade volatile organic compounds (VOCs). The catalytic performance and degradation efficiency of TiO2 are greatly increased by the addition of Fe and Go, the preparation steps are simple, and the reaction time is greatly shortened.

Description

technical field [0001] The invention relates to an iron-modified TiO for degrading VOCs 2 The invention discloses a preparation method of a GO composite material, which belongs to the technical field of semiconductor photocatalysis. Background technique [0002] Titanium dioxide (TiO 2 ) is a commonly used photochemical catalyst with high efficiency, non-toxic, harmless, cheap and easy to obtain, and strong pollution resistance, and its unique electronic and energy band structure can undergo redox reactions with organic pollutants to catalyze the degradation of volatile organic gases VOCs for CO 2 and H 2 O, is a green and environmentally friendly material for dealing with volatile organic gases. But because TiO 2 In the catalytic process, the recombination rate of photogenerated carriers is high, the spectral absorption is distributed in the ultraviolet region, the limitations of low utilization rate of solar energy, poor adsorption capacity of pollutants, and insuffic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01D53/86B01D53/44
CPCB01D53/8687B01D2257/708B01J23/745
Inventor 王丽娟孙强丁阳阳苏秀文李宜泰王璐孙丽晶
Owner CHANGCHUN UNIV OF TECH
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