CN100577284C - Method for processing foamed aluminium load nano-titanium dioxide photocatalysis body - Google Patents
Method for processing foamed aluminium load nano-titanium dioxide photocatalysis body Download PDFInfo
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- CN100577284C CN100577284C CN 200810026029 CN200810026029A CN100577284C CN 100577284 C CN100577284 C CN 100577284C CN 200810026029 CN200810026029 CN 200810026029 CN 200810026029 A CN200810026029 A CN 200810026029A CN 100577284 C CN100577284 C CN 100577284C
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- titanium dioxide
- foamed aluminium
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- nano titanium
- dioxide photocatalysis
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Abstract
The invention discloses a method for processing a foamed aluminum loading nano titanium dioxide photocatalysis body, pertaining to the field of producing technology of photocatalysts. The main point of technical proposal of the invention is that in electroless plating solution dispersed with the nano titanium dioxide, foamed aluminum matrix is taken as anode and a copper assistant body or a nickel assistant body placed at two sides of the foamed aluminum matrix is taken as cathode, and the length between the anode and the cathode at the two sides is basically the equal. The composing ratio of the electroless plating solution is 250ml of pure water, 2.5g +/-0.2g of the nano titanium dioxide, 3.75 +/- 0.25g of sodium citrate, 7.5 +/- 0.5g of sodium hypophosphite 9.4+/-0.4g of bluestone, 2.5+/-0.2g of sodium acetate, 2.0+/-0.1ml of betaine aqueous solution with the concentration of 30 percent and 0.25-0.30mg of sodium dodecyl sulfonate; the voltage of galvanization is 12 volt-ampere, temperature is 80-85 DEG C and galvanization time is 5-20 minutes. With the advantages of simple technique, simple operation and even coating thickness, the invention can be used for preparing the nano titanium dioxide photocatalysis body.
Description
Technical field
The present invention relates to a kind of high efficiency photocatalyst manufacturing technology, more particularly, it relates to a kind of preparation method of foamed aluminium load nano-titanium dioxide photocatalysis body.
Background technology
Nano titanium oxide (TiO
2) be a kind of novel high efficiency photocatalyst, have very strong oxidability, under the illumination condition of certain energy, it can not only be degraded to CO with the harmful organic substance in the environment
2And H
2O, and in can the oxidation removal atmosphere NOx of low concentration and sulfur-containing compound (as H
2S, SO
2) wait toxic gas.In addition, photochemical catalyst TiO
2Also have sterilization, deodorizing, antifog, from effects such as cleanings, can further purify and improve our living environment.Nano-TiO
2Advantages such as photocatalysis has that energy consumption is low, simple to operate, inexpensive, reaction condition is gentle, non-secondary pollution and applied range, become valued day by day in recent years environmental pollution improvement new technology, and be subjected to extensive concern, be one of a kind of environment-friendly type catalyst that DEVELOPMENT PROSPECT is arranged very much.In recent years, about nano-TiO
2Photochemical catalyst (comprising preparation method and immobilization technology) and application thereof have become the research focus in environmental catalysis field.Nano-TiO
2Catalysis material becomes one of research focus of nano material.In the sponsor nation Japan of photocatalysis technology, photocatalytic product has begun to popularize.Country such as America and Europe is also very fast in the development in this field.The starting of the relevant photocatalysis research of China is later relatively, but makes much progress, and has walked the front in the Asian countries except that Japan.As doctor Shi Liyi of Shanghai university, the Yu Jiaguo of Wuhan University of Technology etc. has obtained important progress in the research of nano-titanium oxide catalysis material, for the practical application of this material is laid a good foundation.
In the early stage research of nano titanium oxide high efficiency photocatalyst, mostly with TiO
2Powder and contaminated water are formed the research of suspension system, and have ignored the immobilization research of photochemical catalyst.And suspension system has limited its practical application owing to exist later separation and recovery, catalyst to condense easily and shortcoming such as can not reuse, and with nano-TiO
2Be fixed on certain carrier and can address these problems well.Therefore, how with TiO
2Photochemical catalyst loads on the suitable carriers, becomes the problem that photocatalysis field presses for solution.And the solution of this problem is the prerequisite and the basis of its application just, and meaning is very great.
Photochemical catalyst TiO
2Process for fixation a lot, as adopting sol-gel method, sputtering method, chemical vapour deposition technique, liquid phase deposition, electrodeposition process and binder method etc., can obtain the functional photocatalysis film of different performance and obtain certain progress.But exist as the cost height, photocatalysis efficiency is not high, is difficult for shortcomings such as industrialization.In recent years, domestic many scientific workers have realized that nano-TiO
2Fixing importance, as the Sun Tong of Northeastern University, the yellow new people of HeFei University of Technology etc. are to nano-TiO
2Compound plating carried out more deep research, obtained certain achievement.But their work mainly concentrates on stalloy and the nickel foam.As everyone knows, rare metal Ni nature content is low, and cost is very high, even its photocatalysis is effective, also is difficult to the marketization.And be load with the stalloy, because the surface area of flaky material is less relatively, though the flaky material cost is lower, its photocatalysis efficiency is lower, also is difficult to realize the marketization.
Chinese patent application CN0510022584.3 (open day 2006.06.21; " with the catalyst of foamed aluminum carried titanium dioxide; its preparation method and application thereof " publication number CN1788839A) disclosed; proposition is fixed on the foamed aluminium radical surface with nano titanium oxide; method is to utilize nano titanium oxide dispersion soln or colloidal solution or mix up nano titanium oxide dispersion soln or colloidal solution; by immersion way at foamed aluminium surface deposition nano titanium oxide or mix up nano titanium oxide; then through natural air drying; and under inert gas shielding, carry out heating anneal and handle; its complex process; and the difficult control of the titanium dioxide thickness on surface; owing to do not have corresponding experimental data in the application, can't understand its photocatalysis effect to the catalytic organism degraded.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned deficiency at prior art, provides that a kind of technology is simple, easy to process, the preparation method of the foamed aluminium load nano-titanium dioxide photocatalysis body of excellent catalytic effect.
Technical scheme of the present invention is such: a kind of processing method of foamed aluminium load nano-titanium dioxide photocatalysis body, wherein, in being dispersed with the plating bath of nano titanium oxide, with the foamed aluminium matrix is anode, with the copper or the nickel auxiliary body that are arranged on foamed aluminium matrix both sides is negative electrode, equidistant substantially between the negative electrode on anode and both sides, the plating bath proportion of composing is pure water 250ml, nano titanium oxide 2.5 ± 0.2g, trisodium citrate 3.75 ± 0.25g, inferior sodium phosphate 7.5 ± 0.5g, copper sulphate 9.4 ± 0.4g, sodium acetate 2.5 ± 0.2g, 30% aqueous solutions of betaine, 2.0 ± 0.1ml, dodecyl sodium sulfate 0.25～0.30mg; 12 volts of electroplating voltages, 80～85 ℃ of temperature, electroplating time 5～20 minutes.
In the processing method of above-mentioned foamed aluminium load nano-titanium dioxide photocatalysis body, with ultrasonic wave plating bath is disperseed before electroplating, the time was good with 3～10 minutes, can improve the dispersion effect of nano titanium oxide in solution system.
In the processing method of above-mentioned foamed aluminium load nano-titanium dioxide photocatalysis body, electroplating time was good with 8～15 minutes, and short then nanometer titanium dioxide coating thin thickness of time influences catalytic effect.
In the processing method of above-mentioned foamed aluminium load nano-titanium dioxide photocatalysis body, add stirring during plating,, influence coating result to prevent nano titanium oxide generation sedimentation.
The present invention compared with prior art has following advantage:
(1) the present invention adopts electro-plating method to form nanometer titanium dioxide coating on the foamed aluminium surface, and technology is simple, effect is high, and the coating uniformity of formation is good.
(2) the present invention adopts composite plating method first, nano titanium oxide is fixed in the foamed aluminium surface, and obtained nanometer titanium dioxide coating, this coating has good photocatalysis performance to organic matter, organic matter in the degradable solution and kill harmful bacterium have industrial preferably promotional value and application prospect.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and Examples, but do not constitute any limitation of the invention.
Fig. 1 is an electroplanting device structural representation of the present invention.
Among the figure: water bath with thermostatic control 1, heating and stirring device 2, continuous-current plant 3, temperature control equipment 4.
The specific embodiment
Embodiment 1
Consult shown in Figure 1, for realizing electroplanting device of the present invention, substantially by water bath with thermostatic control 1, heating and stirring device 2, continuous-current plant 3, temperature control equipment 4 are formed, and heating and stirring device 2 can adopt DF-2 heat collecting type magnetic force heating stirrer, during concrete operations, measure the weight or volume of each component by the plating solution raw materials proportioning, put into heating and stirring device 2 dispersed with stirring, disperse 3 fens kinds with ultrasonic wave then, temperature remains between 80～85 ℃.
The plating bath proportion of composing: pure water 250ml, nano titanium oxide 2.3g, trisodium citrate 3.5g, inferior sodium phosphate 7.0g, copper sulphate 9.0g, sodium acetate 2.3g, concentration is 30% aqueous solutions of betaine 1.9ml, dodecyl sodium sulfate 0.25mg.
Get a foamed aluminium matrix, two ultra-thin copper or nickel foam auxiliary body then, pollutants such as the method removal substrate of employing Chemical cleaning and the dust of auxiliary body, fiber, grease, protein, substrate is connected continuous-current plant 3 with auxiliary body, and make between the negative electrode on anode and both sides equidistant substantially, applying 12 volts of voltages electroplates, electroplating time 20 minutes is about 1.6 μ m by the testing electronic microscope coating layer thickness.
Embodiment 2
Electroplanting device is identical with embodiment 1, the plating bath proportion of composing: pure water 250ml, nano titanium oxide 2.5g, trisodium citrate 3.75g, inferior sodium phosphate 7.5g, copper sulphate 9.4g, sodium acetate 2.5g, concentration is 30% aqueous solutions of betaine 2.0ml, dodecyl sodium sulfate 0.25mg.Electroplating time 10 minutes is about 1 μ m by the testing electronic microscope coating layer thickness.
Embodiment 3
Electroplanting device is identical with embodiment 1, the plating bath proportion of composing: pure water 250ml, nano titanium oxide 2.7g, trisodium citrate 4.0g, inferior sodium phosphate 8.0g, copper sulphate 9.8g, sodium acetate 2.7g, 30% aqueous solutions of betaine 2.1ml, dodecyl sodium sulfate 0.30mg.Electroplating time 5 minutes is about 0.7 μ m by the testing electronic microscope coating layer thickness.
Experimental example 1
The foamed aluminium load nano-titanium dioxide photocatalysis body of being processed with embodiment 2 experimentizes, catalytic body is put into the solution that contains the organic matter methylene blue, with low-power (15W) ultra violet lamp 6 hours, methylene blue count behind the pre-irradiation after tested, degradation rate surpasses 47%.
Experimental example 2
Place the foamed aluminium load nano-titanium dioxide photocatalysis body of embodiment 2 processing near 1cm under the turbid liquid liquid level of vibrio alginolyticus bacterium, and use the high voltage mercury lamp radiation different time, through behind the high voltage mercury lamp radiation of 20min, the killing rate of vibrio alginolyticus surpasses 96%; And with behind the high voltage mercury lamp radiation 180min, the killing rate of vibrio alginolyticus reaches 100%.Show good photocatalysis performance.
Claims (4)
1. the processing method of a foamed aluminium load nano-titanium dioxide photocatalysis body, it is characterized in that, in being dispersed with the plating bath of nano titanium oxide, with the foamed aluminium matrix is anode, with the copper or the nickel auxiliary body that are arranged on foamed aluminium matrix both sides is negative electrode, connect with continuous-current plant, equidistant substantially between the negative electrode on anode and both sides, the plating bath proportion of composing is pure water 250ml, nano titanium oxide 2.5 ± 0.2g, trisodium citrate 3.75 ± 0.25g, inferior sodium phosphate 7.5 ± 0.5g, copper sulphate 9.4 ± 0.4g, sodium acetate 2.5 ± 0.2g, concentration is aqueous solutions of betaine 2.0 ± 0.1ml of 30%, dodecyl sodium sulfate 0.25～0.30mg; 12 volts of electroplating voltages, 80～85 ℃ of temperature, electroplating time 5～20 minutes.
2. the processing method of foamed aluminium load nano-titanium dioxide photocatalysis body according to claim 1 is characterized in that, plating bath is disperseed 3～10 minutes time with ultrasonic wave before electroplating.
3. the processing method of foamed aluminium load nano-titanium dioxide photocatalysis body according to claim 1 is characterized in that, electroplating time 8～15 minutes.
4. the processing method of foamed aluminium load nano-titanium dioxide photocatalysis body according to claim 1 is characterized in that, adds stirring during plating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810026029 CN100577284C (en) | 2008-01-25 | 2008-01-25 | Method for processing foamed aluminium load nano-titanium dioxide photocatalysis body |
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| CN 200810026029 CN100577284C (en) | 2008-01-25 | 2008-01-25 | Method for processing foamed aluminium load nano-titanium dioxide photocatalysis body |
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| CN100577284C true CN100577284C (en) | 2010-01-06 |
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| CN109183085A (en) * | 2018-08-16 | 2019-01-11 | 张家港市东威新材料技术开发有限公司 | A kind of preparation method of nickel-titania coextruded film |
| CN110075854B (en) * | 2019-05-06 | 2022-03-08 | 东南大学 | Preparation and application method of monolithic catalyst |
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