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Visible light photocatalysis and adsorption material for removing harmful chemical substances leaked in water during accidents

A technology of adsorption materials and chemical substances, applied in other chemical processes, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of leakage of harmful chemical substances, single treatment technology means, lack of solutions, etc., and achieve low cost , cost reduction, and stable maintenance of degradation efficiency

Active Publication Date: 2017-12-01
QINGDAO UNIV
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Problems solved by technology

[0002] In November 2005, Jilin Petrochemical leaked benzene and nitrobenzene to pollute the Songhua River. In 2011, an oil drilling platform in the US Gulf of Mexico leaked. It costs a lot of money, and also exposes problems such as single processing technology and low efficiency.
Its disadvantage is that it needs to be irradiated in the ultraviolet band to exert the maximum photocatalytic efficiency, and the actual use effect of nano-oxide materials will be affected under the action of sunlight, so the above research is currently difficult to be practically applied to the surface of rivers, lakes and oceans in natural environment
[0004] In summary, in the prior art, there is still a lack of effective solutions for the removal of harmful chemical substances in natural environments such as rivers, lakes, ocean surfaces, etc.

Method used

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  • Visible light photocatalysis and adsorption material for removing harmful chemical substances leaked in water during accidents

Examples

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preparation example Construction

[0021] As introduced in the background technology, the products for removing harmful pollutants in the special environment of rivers, lakes and oceans in the prior art have certain deficiencies. In order to solve the above technical problems, the present invention proposes a new type of product-used in water bodies Visible light photocatalytic adsorption material for removal of harmful chemical substances leaked in the medium, the adsorption material is based on polypropylene floating adsorption material, tetraisopropoxyzinc phthalocyanine-graphene molecules are loaded on polypropylene floating adsorption through diatomite medium On material; Wherein, the preparation method of described tetraisopropoxyzinc phthalocyanine-graphene molecule comprises the following steps: tetraisopropoxyzinc phthalocyanine and graphene oxide are mixed heating and stirring in dichloromethane solution, dry and remove Solvent can obtain tetraisopropoxyzinc phthalocyanine-graphene molecule.

[0022] ...

Embodiment 1

[0041] Preparation of tetraisopropoxyzinc phthalocyanine-graphene molecule:

[0042] 4-Nitrophthalonitrile (17.3g 0.1mol) was dissolved in dimethyl sulfoxide DMSO (120ml), and argon was introduced (30min), and isopropanol (15ml) was added under the protection of argon, and no Potassium carbonate water (27.6086g), stirred at room temperature for 48h, after purification, 4.1086g of a yellow reaction intermediate was obtained, the intermediate (2.0g 0.05mol) was dissolved in n-pentanol (25ml), and added under the protection of argon Zinc acetate (0.5g 0.0125mol), add 1,8-diazabicyclo[5,4,0]undec-7-decene DBU (1ml), reflux (temperature is 160°C) for 4h, pass through a silica gel column (The eluent: the volume ratio of chloroform-methanol is 10:1) After separation, the pure product tetraisopropoxyzinc phthalocyanine was obtained. Tetraisopropoxyzinc phthalocyanine and graphene oxide (mass ratio 5:1) were mixed and stirred in dichloromethane solution for 6h, dried and removed to ob...

Embodiment 2

[0044] Schematic diagram of the preparation of photocatalytic adsorption materials as shown in figure 1 As shown, 1 g of tetraisopropoxyzinc phthalocyanine-graphene molecules was dissolved in 500 ml of acetone, then 50 g of diatomite was added, and glass beads were used as abrasives, and sand milled at 1200 rpm for 3 hours to obtain photosensitive particles loaded with phthalocyanine-graphene. Diatomaceous earth, then this diatomite is mixed with 25ml sodium polyacrylate solution (concentration is 50wt%), use glass beads as abrasive, 1200 rpm sand mill 3h to get slurry, this slurry is repeatedly coated on 1m 2 On the polypropylene floating adsorption material, get the polypropylene adsorption material 1m that is loaded with photosensitizer after drying 2 .

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Abstract

The invention discloses a visible light photocatalysis and adsorption material for removing harmful chemical substances leaked in water. Polypropylene floating absorption materials are used as substrates for the visible light photocatalysis and adsorption material, and tetra-isopropoxy zinc phthalocyanine-graphene molecules are supported on the polypropylene floating absorption materials by diatomaceous earth media. A method for preparing the tetra-isopropoxy zinc phthalocyanine-graphene molecules includes steps of mixing tetra-isopropoxy zinc phthalocyanine and graphene oxide with each other in dichloromethane solution to obtain mixtures and heating and stirring the mixtures; drying the mixtures and removing solvents to obtain the tetra-isopropoxy zinc phthalocyanine-graphene molecules. The visible light photocatalysis and adsorption material has the advantages that the visible light photocatalysis and adsorption material is specially provided for removing the harmful chemical substances leaked in the water of rivers, lakes and adjacent sea for special water environments of the rivers, the lakes and oceans; the visible light photocatalysis and adsorption material does not contain harmful metal elements, natural light sources can be efficiently utilized, and secondary pollution can be abated; existing adsorption materials are innovated, and the visible light photocatalysis and adsorption material has a huge development value and a broad application prospect.

Description

technical field [0001] The invention belongs to the field of environmental risk emergency treatment, and in particular relates to a visible light photocatalytic adsorption material used for removing harmful chemical substances leaked by accidents in water bodies and a preparation method thereof. Background technique [0002] In November 2005, Jilin Petrochemical leaked benzene and nitrobenzene to pollute the Songhua River. In 2011, an oil drilling platform in the US Gulf of Mexico leaked. It costs a lot of money, and also exposes problems such as single processing technology and low efficiency. For the time being, the usual disposal method for chemical pollutants in water bodies is to use oil booms to block and absorb and recover oil-absorbing felts. The characteristic of existing oil-absorbing felts is that the amount of pollutants physically adsorbed by them is certain, and a rapid recycling cloth is required. In addition, physical adsorption is selective, and the adsorpt...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/32C02F1/28C02F1/30
CPCB01J20/14B01J20/205B01J20/223B01J20/261B01J20/3285C02F1/288C02F1/30C02F2103/007C02F2305/10Y02W10/37
Inventor 王宗花赵澎龚世达徐显朕
Owner QINGDAO UNIV
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