CN104998692A - Photocatalytic composite material preparation method - Google Patents
Photocatalytic composite material preparation method Download PDFInfo
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- CN104998692A CN104998692A CN201510430857.1A CN201510430857A CN104998692A CN 104998692 A CN104998692 A CN 104998692A CN 201510430857 A CN201510430857 A CN 201510430857A CN 104998692 A CN104998692 A CN 104998692A
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- composite material
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Abstract
The present invention discloses a photocatalytic composite material preparation method, and particularly relates to a preparation method of a photocatalytic composite material with a three-layer structure comprising a photocatalytic layer, an electric conduction layer and a plastic carrier, and belongs to the technical field of photocatalytic materials. The method comprises plastic carrier pretreatment, electric conduction layer preparing, and photocatalytic layer preparing, wherein a plastic carrier is subjected to degreasing, acid washing and other pretreatment step, then roughening, sensitization, chemical nickel-phosphorus plating and other processes are sequentially performed to prepare an electric conduction layer, and finally a chemical composite plating method and composite deposition of nickel-phosphorus and a nanometer light photocatalyst are used to prepare a photocatalytic layer. According to the present invention, the prepared photocatalytic composite material has characteristics of density of lower than water, strong corrosion resistance and visible light response, and can be widely used for purification of organic pollutants in rivers and lakes.
Description
Technical field
The present invention relates to a kind of preparation method of optic catalytic composite material, especially a kind of preparation method of optic catalytic composite material with photocatalysis layer, conductive layer, plastic carrier three-decker, belongs to catalysis material technical field.
Background technology
The life of the many people of China relies on contaminated water source, every year to the control expense of sewage up to tens billion of unit.Along with constantly expanding city, excessively using chemical fertilizer and the blowdown wantonly of various factory, the situation of water resource of China constantly worsens, nearly half river and lake severe contamination.The wastewater purification technology of development of new is the inevitable requirement of protection water environment, is to alleviate one of shortage of water resources problem important measures.
Photocatalysis technology is the friendly technology of a kind of novel environmental, carries out, can the thorough advantage such as decomposing organic matter, non-secondary pollution under having normal temperature.Many researchers have carried out the photocatalytic degradation research of organic pollutants, comprise the degraded of Organic N in water, P, organic benzene, organic class, chlorinated aromatic hydrocarbons, alkyl-based surfactant, phenolic compound, but mostly concentrate on TiO
2the application of photochemical catalyst, and the direct application of powder photocatalyst.
Simple TiO
2the problem in science that photochemical catalyst exists some keys limits its engineer applied, comprising: quantum efficiency is low, and practical application can not more than 10%; Energy gap is large, can only utilize the ultraviolet excitation of wavelength≤390nm, low to the absorption rate of sunshine.There is recovery difficulty, easily lost efficacy, easily cause secondary pollution problems in the direct application of powder catalyst.
In sum, based on TiO
2the limitation of photochemical catalyst and powder photocatalyst purification applications of sewage organic pollution in river, lake, the present invention proposes a kind of preparation method of optic catalytic composite material, and prepared optic catalytic composite material has the characteristic that density ratio water is low, corrosion resistance is strong, visible light-responded.
Summary of the invention
The object of the invention is to, according to Problems existing in existing photocatalysis technology application process, propose a kind of preparation method of optic catalytic composite material.Main method is chemically composited plating method, during metallic atom chemical deposition, the nano particle being adsorbed on substrate surface is captured codeposition in coating, has that technique is simple, cost is low, thickness of coating is even, particle multiplicity is high, can the advantage such as plating on a large scale.
Above-mentioned purpose of the present invention is achieved by the following technical programs.
The method of the invention is a kind of preparation method of optic catalytic composite material with photocatalysis layer, conductive layer, plastic carrier three-decker, comprises the preparation of the pre-treatment of plastic carrier, conductive layer and photocatalysis layer.First plastic carrier is through the pretreatment procedure such as oil removing, pickling; Then conductive layer is prepared through operations such as alligatoring, sensitization, chemical nickel phosphorus platings successively; Chemical deposition, composite deposition nickel phosphorus and nano-photocatalyst is finally adopted to prepare photocatalysis layer.
As a kind of preferred version, described plastic carrier is a kind of LDPE: Low-density polyethylene plastics net, and its network planning lattice can be joined as follows: thickness is 0.5mm ~ 2.0mm; The mesh length of side is 5.0mm ~ 10.0mm; Obstructing wide is 0.5mm ~ 2.0mm.
As a kind of preferred version, the degreasing fluid adopted in described oil removing operation is sodium hydroxide solution or the sodium carbonate liquor of 4% ~ 6%, and object is various grease and the oxide of hydrolysis frosting, is conducive to the adhesion strengthening coating.
As a kind of preferred version, the pickle adopted in described pickling process is the dilution heat of sulfuric acid of 4% ~ 6%, and object makes frosting generate polarity water suction group-OH ,-COOH ,-SO
3the groups such as H.
As a kind of preferred version, the coarsening solution adopted in described alligatoring operation is FS-8858, CrO
3, H
2sO
4, Cr
3+mixed liquor, object is oxidation frosting, forms microcellular structure, is applicable to absorption Pd catalyst.
As a kind of preferred version, the sensitizing solution adopted in described sensitization operation is FS-8878CAT and FS-28878MU mixed liquor, and object is at frosting absorption Pd catalyst, catalytic chemistry nickel plating phosphorus reaction.
As a kind of preferred version, the chemical nickel phosphorus plating liquid adopted in described chemical nickel phosphorus plating operation is FS-2000M and FS-2000A mixed liquor.
As a kind of preferred version, described conductive layer is nickel-phosphorus alloy coating, and thickness is 0.6um ~ 1.0um.
As a kind of preferred version, the chemical sinking effusion adopted in described photocatalysis layer preparation section is the chemical nickel phosphorus plating liquid containing 5% ~ 10% nano-photocatalyst.
As a kind of preferred version, described photocatalysis layer is the composite deposite of nickel phosphorus and photochemical catalyst, and thickness is 2.0um ~ 10.0um.
As a kind of preferred version, described nano-photocatalyst is TiO
2with WO
3, BiOBr, BiVO
4in one or more mix the visible light responsive photocatalyst of compound.
Compared with prior art, the present invention has following beneficial effect.
The density ratio water of the optic catalytic composite material that the method for the invention obtains is low, may float on the water surface; By force corrosion-resistant, long service life; There is visible light-responded characteristic, the energy of sunshine can be made full use of.
Accompanying drawing explanation
Fig. 1 adopts process chart of the present invention.
The plane of Fig. 2 optic catalytic composite material.
The sectional view of Fig. 3 optic catalytic composite material.
The photocatalytic degradation effect figure of Fig. 4 optic catalytic composite material.
Number in the figure: 1-plastic carrier, 2-conductive layer, 3-photocatalysis layer.
Detailed description of the invention
Explain the present invention further below in conjunction with embodiment and accompanying drawing, but embodiment does not limit in any form to the present invention.
The optic catalytic composite material that the method for the invention obtains comprises plastic carrier 1, conductive layer 2, photocatalysis layer 3 three layers, and first plastic carrier 1 is through the pretreatment procedure such as oil removing, pickling; Then conductive layer 2 is prepared through operations such as alligatoring, sensitization, chemical nickel phosphorus platings successively; Chemically composited plating method, composite deposition nickel phosphorus and nano-photocatalyst is finally adopted to prepare photocatalysis layer.
By above-mentioned plastic carrier 1, being placed in mass fraction is 4% ~ 6% sodium hydroxide solution or sodium carbonate liquor, carries out the oil removal treatment of 10 minutes in 55 DEG C.
By the plastic carrier 1 after above-mentioned oil removing, be placed in the dilution heat of sulfuric acid that mass fraction is 4% ~ 6%, carry out the pickling processes of 1 minute in 50 DEG C.
By plastic carrier 1 after above-mentioned pickling, being placed in mass fraction is the FS-8858 of 0.3%, the CrO of 41%
3, 39% H
2sO
4, 1.3% Cr
3+in mixed aqueous solution, carry out the roughening treatment of 15 minutes in 68 DEG C.
By plastic carrier 1 after above-mentioned alligatoring, being placed in mass fraction is the FS-8878CAT of 2%, the FS-8878MU mixed solution of 98%, carries out the sensitized treatment of 5 minutes in 25 DEG C.
By plastic carrier 1 after above-mentioned sensitization, being placed in mass fraction is the FS-2000M of 20%, the FS-2000A mixed solution of 5%, carries out the chemical nickel plating process of 5 minutes, prepare one deck conductive layer 2 on plastic carrier 1 surface in 80 DEG C.
Conductive layer 2/ plastic carrier 1 material of above-mentioned preparation is placed in the WO containing 5% ~ 10%
3/ TiO
2photochemical catalyst DEG C carries out the chemically composited plating of 10 minutes, at plated surface one deck photocatalysis layer 3 of conductive layer 2, and obtained photocatalysis layer 3/ conductive layer 2/ plastic carrier 1 composite.
Claims (5)
1. a preparation method for optic catalytic composite material, is characterized in that preparing a kind of optic catalytic composite material with photocatalysis layer, conductive layer, plastic carrier three-decker; Described plastic carrier is successively through the pretreatment procedure such as oil removing, pickling; Described conductive layer is prepared through operations such as alligatoring, sensitization, chemical nickel phosphorus platings successively; Described photocatalysis layer adopts chemically composited plating method, composite deposition nickel phosphorus and nano-photocatalyst and prepare.
2. the preparation method of a kind of optic catalytic composite material according to claim 1, it is characterized in that described plastic carrier is a kind of LDPE: Low-density polyethylene plastics net, its network planning lattice can be joined as follows: thickness is 0.5mm ~ 2.0mm; The mesh length of side is 5.0mm ~ 10.0mm; Obstructing wide is 0.5mm ~ 2.0mm.
3. the preparation method of a kind of optic catalytic composite material according to claim 1, it is characterized in that described conductive layer is nickel-phosphorus alloy coating, thickness is 0.6um ~ 1.0um.
4. the preparation method of a kind of optic catalytic composite material according to claim 1, it is characterized in that described photocatalysis layer is the composite deposite of nickel phosphorus and nano-photocatalyst, thickness is 2.0um ~ 10.0um.
5. a kind of preparation method of optic catalytic composite material according to claim 1 or 4, is characterized in that described nano-photocatalyst is TiO
2with WO
3, BiOBr, BiVO
4in one or more mix the visible light responsive photocatalyst of compound.
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| CN201510430857.1A CN104998692A (en) | 2015-07-22 | 2015-07-22 | Photocatalytic composite material preparation method |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879920A (en) * | 2016-04-22 | 2016-08-24 | 宁波高新区夏远科技有限公司 | Photocatalyst having photoresponse function and preparation method thereof |
| CN115889400A (en) * | 2022-09-26 | 2023-04-04 | 华南师范大学 | Method for degrading PET plastic through photocatalysis |
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| CN102120220A (en) * | 2010-12-17 | 2011-07-13 | 广东工业大学 | Ultrasonic cleaning device for photochemical catalysis metal net, and cleaning method thereof |
| CN102266774A (en) * | 2011-06-07 | 2011-12-07 | 广东工业大学 | Semiconductor nano photocatalysis material and preparation method thereof |
| CN202214438U (en) * | 2011-06-07 | 2012-05-09 | 广东工业大学 | Loading device for preparing load-type photocatalytic material |
| CN102580740A (en) * | 2011-12-31 | 2012-07-18 | 广东工业大学 | Method for preparing multidimensional photocatalytic material |
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2015
- 2015-07-22 CN CN201510430857.1A patent/CN104998692A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120220A (en) * | 2010-12-17 | 2011-07-13 | 广东工业大学 | Ultrasonic cleaning device for photochemical catalysis metal net, and cleaning method thereof |
| CN102266774A (en) * | 2011-06-07 | 2011-12-07 | 广东工业大学 | Semiconductor nano photocatalysis material and preparation method thereof |
| CN202214438U (en) * | 2011-06-07 | 2012-05-09 | 广东工业大学 | Loading device for preparing load-type photocatalytic material |
| CN102580740A (en) * | 2011-12-31 | 2012-07-18 | 广东工业大学 | Method for preparing multidimensional photocatalytic material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879920A (en) * | 2016-04-22 | 2016-08-24 | 宁波高新区夏远科技有限公司 | Photocatalyst having photoresponse function and preparation method thereof |
| CN105879920B (en) * | 2016-04-22 | 2018-06-19 | 广州美观环保科技有限公司 | A kind of photochemical catalyst with photoresponse and preparation method thereof |
| CN115889400A (en) * | 2022-09-26 | 2023-04-04 | 华南师范大学 | Method for degrading PET plastic through photocatalysis |
| CN115889400B (en) * | 2022-09-26 | 2024-05-31 | 华南师范大学 | Method for degrading PET plastic by photocatalysis |
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