Rare-earth composite g-C3N4 graphene photocatalyst and preparation method thereof
The invention relates to a photocatalytic material for treating organic pollutants in water and a preparation method thereof. The photocatalytic material is formed by compounding layered semiconductor g-C3N4 graphene material with visible-light response and beta-NaYF4: Yb, Tm rare-earth nanoparticle...
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| creator | WANYI ZENG HAOJIE CUI MINGLAI FU MINZHONG HUANG |
| description | The invention relates to a photocatalytic material for treating organic pollutants in water and a preparation method thereof. The photocatalytic material is formed by compounding layered semiconductor g-C3N4 graphene material with visible-light response and beta-NaYF4: Yb, Tm rare-earth nanoparticles with upconversion performance, wherein the beta-NaYF4: Yb, Tm rare-earth nanoparticles are uniformly distributed on the surface of the g-C3N4 graphene material, and a composite photocatalytic material with heterostructure and near-infrared light response is formed. According to successful compounding of the rare-earth nanoparticles, the g-C3N4 graphene can absorb visible light emitted by the rare earth through upconversion, so that the infrared light response is realized. The catalyst has excellent catalytic activity under near-infrared light, the concentration of the organic pollutants in the water can be rapidly reduced in a short time, and finally the pollutants can be almost completely degraded. The preparation method is simple and feasible, and the catalyst can be conveniently recycled and has wide application prospects. |
| format | Patent |
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The photocatalytic material is formed by compounding layered semiconductor g-C3N4 graphene material with visible-light response and beta-NaYF4: Yb<3+>, Tm<3+> rare-earth nanoparticles with upconversion performance, wherein the beta-NaYF4: Yb<3+>, Tm<3+> rare-earth nanoparticles are uniformly distributed on the surface of the g-C3N4 graphene material, and a composite photocatalytic material with heterostructure and near-infrared light response is formed. According to successful compounding of the rare-earth nanoparticles, the g-C3N4 graphene can absorb visible light emitted by the rare earth through upconversion, so that the infrared light response is realized. The catalyst has excellent catalytic activity under near-infrared light, the concentration of the organic pollutants in the water can be rapidly reduced in a short time, and finally the pollutants can be almost completely degraded. 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The photocatalytic material is formed by compounding layered semiconductor g-C3N4 graphene material with visible-light response and beta-NaYF4: Yb<3+>, Tm<3+> rare-earth nanoparticles with upconversion performance, wherein the beta-NaYF4: Yb<3+>, Tm<3+> rare-earth nanoparticles are uniformly distributed on the surface of the g-C3N4 graphene material, and a composite photocatalytic material with heterostructure and near-infrared light response is formed. According to successful compounding of the rare-earth nanoparticles, the g-C3N4 graphene can absorb visible light emitted by the rare earth through upconversion, so that the infrared light response is realized. The catalyst has excellent catalytic activity under near-infrared light, the concentration of the organic pollutants in the water can be rapidly reduced in a short time, and finally the pollutants can be almost completely degraded. The preparation method is simple and feasible, and the catalyst can be conveniently recycled and has wide application prospects.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Rare-earth composite g-C3N4 graphene photocatalyst and preparation method thereof |
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