Novel nano-composite visible light catalyst and preparation method thereof
A nanocomposite, visible light technology, applied in the field of photocatalytic materials, can solve the problems of uncontrollable tin tungsten oxide particle size, decreased photocatalytic activity, and decreased specific surface area, so as to improve catalyst activity, reduce recombination rate, and promote separation. Effect
Inactive Publication Date: 2013-05-22
湖南元素密码石墨烯高科技有限公司
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The invention relates to a novel nano-composite visible light catalyst and a preparation method thereof, and belongs to the fields of nano-composite materials and light catalysis. The visible light catalyst is formed by compounding porous graphene and stannum tungsten oxide, wherein a nano-stannum tungsten oxide is deposited on a porous graphene sheet layer; the particle diameter of the nano-stannum tungsten oxide is from 20 to 160 nm; the specific surface area of the porous graphene is from 350 to 450 m<2>/g; the conductivity of the porous graphene is from 20 to 60 S.m(-1); and the weight loss of the porous graphene within the temperature of 900 DEG C is from 4 to 6 wt%. The nano-composite material has the strong absorbance in a region with the wave length of 400 to 800 nm, wherein the absorbance is from 0.92 to 1.08. Therefore, under the irradiation of the visible light, by irradiating the visible light catalyst for 90 minutes, the degradation rate of a methyl orange dye can reach 99.9%.
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Property | Measurement | Unit |
Specific surface area | 350.0 | m²/g |
Particle size | 20.0 ~ 160.0 | nm |
Specific surface area | 370.0 | m²/g |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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