CN106283099A - A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material and application thereof - Google Patents

A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material and application thereof Download PDF

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CN106283099A
CN106283099A CN201610721311.6A CN201610721311A CN106283099A CN 106283099 A CN106283099 A CN 106283099A CN 201610721311 A CN201610721311 A CN 201610721311A CN 106283099 A CN106283099 A CN 106283099A
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surfactant
manganese
composite material
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titanium dioxide
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CN106283099B (en
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徐旭耀
周小松
马琳
许丽梅
罗金
周晓平
张玲玲
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Lingnan Normal University
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    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
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    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32Manganese, technetium or rhenium
    • B01J23/34Manganese
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
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    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
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    • C25B1/21Manganese oxides

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Abstract

The invention provides a kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material, with manganese salt solution as aqueous phase, microemulsion is formed as electrolyte solution with surfactant, cosurfactant, oil phase, utilize potentiostatic electrodeposition method, prepare for titanium source with titanium sheet;By changing the composition of microemulsion, manganese ion and the concentration of fluorion, decomposition voltage size, the pattern of electrolysis time regulation composite, size, the method selects cheap reagent as raw material, under room temperature microemulsion electrolyte environment, reaction prepares composite, solve the high-temperature process pattern to product and the problem of stability influence, there is preparation technology simple, with low cost, quickly, energy-conservation, the advantage that efficiency is high, obtained composite is expected at photolysis water hydrogen, degradable organic pollutant, electrochemical energy storage, environmental energy is catalyzed, the fields such as battery material obtain and are widely applied.

Description

A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and titanium dioxide The method of manganese nano composite material and application thereof
Technical field
The present invention relates to technical field of nanometer material preparation, more particularly, to a kind of surfactant assist in electrodeposition Synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material and application.
Background technology
Manganese dioxide is cheap and easy to get, rich reserves, environmental friendliness, is widely used as the electrode material of ultracapacitor, but MnO2Relatively big as internal resistance during electrode material for super capacitor, crystal grain is relatively big, and in electrode process, utilization rate is on the low side.As What overcomes electrode material self-defect, improves the utilization rate in electrode process, plays it at electrode of super capacitor material Advantage in material, is the key issue in studying about electrode material at present.
TiO2Photocatalyst is owing to having good chemical stability, higher photocatalytic activity, low cost, chemical property Stable, chemically-resistant and photochemical corrosion and nontoxic feature, in recent years, become a kind of environmental type favored by people Photocatalyst.But TiO2Greater band gap (Eg=3.0~3.2 eV), only <ultraviolet light of 387 nm just can make it to wavelength X Excite, and sunlight medium ultraviolet luminous energy proportion is less than 5%, thus the utilization rate of solar energy is low;Further, since light excites product Raw light induced electron and hole are easily combined, and cause photocatalysis efficiency low.TiO2Reaction is had important by character and the structure on surface Impact, catalyst surface exist lattice defect be necessary for light-catalyzed reaction.
Semiconductors coupling is to improve TiO2One of effective means of photocatalysis efficiency, it is substantially another kind of granule pair TiO2Modification.Composite semiconductor not only extends the photoresponse scope of wide band gap semiconducter, and have adjusted photo-generated carrier The flow direction.The semiconductors coupling that quasiconductor that band-gap energy is big is little with band-gap energy, not only extend to visible region by photoresponse, and And by electronics and void coalescence at different granules by separation of charge, restrained effectively the compound of photo-generated carrier, improve The electrostatic charge transfer efficiency at quasiconductor-electrolyte solution interface, thus extend the absorption region to spectrum.So, compound Quasiconductor nearly all shows the photocatalytic activity higher than single quasiconductor.Manganese dioxide and the system of composite titania material Standby, it is expected to apply at photocatalysis, electro-catalysis, photoelectrocatalysis, energy environment, sensor, ultracapacitor and lithium ion battery etc. Field plays an increasingly important role.
The preparation method of composite is common to be had: sol-gel process, solid phase method, electrochemical deposition method, microemulsion method, hydro-thermal Method, template etc.;Electrochemical deposition method refers to that metal or metallic compound, at substrate deposit, by controlling deposition velocity, obtain Thin film silicon oxide manganese or the method for its compound to different consistency.The method a direct step can make electrode, but electric Deposition process is not readily susceptible to control, and causes the film thickness of manganese dioxide and pattern uniform not, compares after Overheating Treatment A large amount of crackles etc. easily occur.Want to obtain preferable manganese dioxide, can be by regulating solution concentration and electric current density one Determine to solve in degree the problems referred to above, and obtain or the fine and close or thin film of porous;Microemulsion method is first by precipitant and metal salinity Be not dissolved in identical microemulsion, mix under certain condition, by control in the reaction zone of microemulsion system micelle nucleation, Growth, obtains the emulsion of nanoparticle, then by product ultracentrifugation, separates nanometer powder and microemulsion.Finally remove and be attached to Oil on nanometer powder surface and surfactant, be dried and process the solid sample that i.e. can get nanoparticle.Microemulsion method Feature be prepared nanopowder particles particle diameter little and uniform, stability is high, good dispersion, it is easy to accomplish High Purity.
Reaction temperature height, length reaction time, products therefrom shape is there is in prior art in composite titania material preparation The defect that looks heterogeneity, stability are the best, photocatalytic is low.
Summary of the invention
The technical problem to be solved be overcome in prior art composite preparation exist reaction temperature high, Reaction time length, products therefrom pattern heterogeneity, the defect such as stability is the best, photocatalytic is low, it is provided that a kind of surfactant Assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material.
Second object of the present invention is to provide titanium dioxide that said method prepares and manganese dioxide nano is combined Material.
Third object of the present invention is to provide the application of above-mentioned titanium dioxide and manganese dioxide nano-composite material.
It is an object of the invention to be achieved by the following technical programs:
A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the method for manganese dioxide nano-composite material, It is characterized in that, comprise the following steps:
(1) surfactant, cosurfactant, oil phase are formed solution A with continuous stirring;
(2) manganese salt, villiaumite and disodiumedetate are formed solution B with continuous stirring, solution B is added dropwise to solution A In, the mixed solution formed during second time clarification is microemulsion C;
(3) with titanium sheet as anode, using microemulsion C as electrolyte solution, voltage range is 0.5~10V to carry out cell reaction extremely Electrolyte solution becomes cloudy;Titanium sheet after collection cell reaction is complete, cleaned, drying to obtain product;
Step (1) described surfactant, cosurfactant, the mass ratio of oil phase are 1:0.5~20:0.5~40;Step (2) concentration of described manganese salt is 0.01~0.9 mol/L;The concentration of villiaumite is 0.05~2.0 mol/L;Described ethylenediamine tetrem The addition of acid disodium is the amount dissolved so that manganese salt.
When the present invention is by changing the composition of microemulsion, manganese ion and the concentration of fluorion, the size of decomposition voltage, electrolysis Between regulate the pattern of composite to be obtained, size and size, final to obtain pattern homogeneous, the composite wood of good stability Material.
Specifically, described step (2) forms mixed solution after solution B instills solution A, and this mixed solution first passes through muddiness To clarification more muddy, clarifying process again, the mixed solution formed during second time clarification is microemulsion C;Microemulsion now is water Oil-in, could be used for the electrolyte as electrochemical deposition.
Preferably, described surfactant is selected from cationic surfactant, anion surfactant or nonionic Surfactant.
Preferably, described cationic surfactant is selected from cetyl trimethylammonium bromide (CTAB), tetramethyl chlorination Ammonium, bromododecane yl pyridines, dodecyl tributyl bromide phosphine etc..
Preferably, described anion surfactant selected from sodium lauryl sulphate (SDS), dodecylbenzene sodium sulfonate, Fatty alcohol-ether sodium sulfate, methyl hexadecanoate sodium sulfonate etc..
Preferably, described nonionic surfactant is selected from Triton X-100, Span 60, Tween 80, cocinic acid first Ester polyoxyethylene ether etc..
Preferably, step (1) described cosurfactant be carbon number be the alcohol of 3~24.
Preferably, step (1) described oil phase be carbon number be alkane or the cycloalkane of 3~24.
Preferably, step (2) described manganese salt is manganese sulfate or manganese chloride or other salt containing manganese, and villiaumite is ammonium fluoride or fluorine Change sodium or other fluorine-containing salt.
Preferably, the purity of described titanium sheet is more than 95%.
The present invention also provides for titanium dioxide and the manganese dioxide nano-composite material that said method obtains.
The present invention also provides for the application of described titanium dioxide and manganese dioxide nano-composite material, specifically, can be light Solve the application in terms of the fields such as water hydrogen manufacturing, degradable organic pollutant, electrochemical energy storage, environmental energy catalysis, battery material.
Compared with prior art, the method have the advantages that
The invention provides a kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and manganese dioxide nano is multiple The method of condensation material, is with the aqueous solution of manganese containing salt as aqueous phase, and surfactant, cosurfactant, oil phase form microemulsion Liquid, as electrolyte solution, utilizes potentiostatic electrodeposition method, with titanium sheet for titanium source, prepares the nanometer of titanium dioxide and manganese dioxide Composite;Come by the change composition of microemulsion, manganese ion and the concentration of fluorion, the size of decomposition voltage, electrolysis time Regulate the pattern of composite to be obtained, size and size, the method select cheap reagent as raw material, micro-in room temperature React under emulsion electrolyte environment, prepare anatase titanium dioxide and manganese dioxide nano-composite material, solve at high temperature Manage the pattern of product and the problem of stability influence, have that preparation technology is simple, with low cost, quick, energy-conservation, efficiency is high Advantage, obtained composite be expected to photolysis water hydrogen, degradable organic pollutant, electrochemical energy storage, environmental energy catalysis, The fields such as battery material obtain and are widely applied.
Accompanying drawing explanation
Fig. 1 is embodiment 1 prepared anatase titanium dioxide and the X-ray powder of manganese dioxide nano-composite material Diffraction (XRD) figure.
Fig. 2 is embodiment 2 prepared anatase titanium dioxide and the X-ray powder of manganese dioxide nano-composite material Diffraction (XRD) figure.
Fig. 3 is that the scanning electron of the prepared anatase titanium dioxide of embodiment 1 and manganese dioxide nano-composite material shows Micro mirror (SEM) figure.
Fig. 4 is that the scanning electron of the prepared anatase titanium dioxide of embodiment 2 and manganese dioxide nano-composite material shows Micro mirror (SEM) figure.
Fig. 5 is embodiment 1 prepared anatase titanium dioxide and the energy dispersion light of manganese dioxide nano-composite material Spectrum (EDS) figure.
Fig. 6 is embodiment 2 prepared anatase titanium dioxide and the energy dispersion light of manganese dioxide nano-composite material Spectrum (EDS) figure.
Detailed description of the invention
Below by Figure of description and specific embodiment specific descriptions further to the present invention.The design philosophy of the present invention Or simple replacement of allied substances belongs to protection scope of the present invention.If following used experimental technique is without specified otherwise, all For the method for the existing routine of the art, the dispensing used or material, if no special instructions, being can by commercial sources The dispensing obtained or material, all reagent are analytical pure.
Embodiment 1
A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the preparation of manganese dioxide nano-composite material Method, comprises the steps:
(1) in a beaker, add 7.5 g sodium lauryl sulphates (SDS), 37.5 g glycerol, normal hexane 10 mL, stir Mix uniformly, obtain solution A;
(2) in another beaker, 2.5 g manganese sulfates, 5 g ammonium fluorides, 3 g disodiumedetate (EDTA bis-are added Sodium), appropriate distilled water, stir, be settled in 500 mL volumetric flasks, obtain solution B;
(3) solution B being added dropwise in solution A, the mixed solution of formation first passes through muddy to clarification, more muddy, clarifying process again, The mixed solution formed during second time clarification is microemulsion C.Regulated power supply is adjusted to 2.5 V, and the titanium sheet of 2 × 3 cm is anode, 2 The copper sheet of × 3 cm is negative electrode, and microemulsion C is electrolyte, starts cell reaction, and the time is 2 hours.After reaction terminates, collect titanium Sheet, cleans each three times with dehydrated alcohol and distilled water, at room temperature natural drying, obtains end product.
To product use Germany Bruker company produce D8 ADVANCE type X-ray powder diffractometer (XRD) (λ Cu= 0.15418 nm) carry out Crystalline form analysis (such as Fig. 1), result shows: products therefrom is anatase titanium dioxide.
Embodiment 2
A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the preparation of manganese dioxide nano-composite material Method, comprises the steps:
(1) in a beaker, 20 g cetyl trimethylammonium bromide (CTAB), 100 g glycerol, normal hexane 50 are added ML, stirs, and obtains solution A;
(2) in another beaker, 2.5 g manganese sulfates, 5 g ammonium fluorides, 3 g disodiumedetate (EDTA bis-are added Sodium), appropriate distilled water, stir, be settled in 500 mL volumetric flasks, obtain solution B;
(3) B solution being added dropwise in solution A, the mixed solution of formation first passes through muddy to clarification, more muddy, clarifying process again, The mixed solution formed during second time clarification is microemulsion C.Regulated power supply is adjusted to 2.5 V, and the titanium sheet of 2 × 3 cm is anode, 2 The copper sheet of × 3 cm is negative electrode, and microemulsion C is electrolyte, starts cell reaction, and the time is 2 hours.After reaction terminates, collect titanium Sheet, cleans each three times with dehydrated alcohol and distilled water, at room temperature natural drying, obtains end product.
To product use Germany Bruker company produce D8 ADVANCE type X-ray powder diffractometer (XRD) (λ Cu= 0.15418 nm) carry out Crystalline form analysis (such as Fig. 2), result shows: products therefrom is anatase titanium dioxide.
Embodiment 3
A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the preparation of manganese dioxide nano-composite material Method, comprises the steps:
(1) in a beaker, adding 10 g dodecylbenzene sodium sulfonate, 30 g n-butyl alcohol, normal heptane 40 mL, stirring is all Even, obtain solution A;
(2) in another beaker, 2.5 g manganese sulfates, 5 g ammonium fluorides, 3 g disodiumedetate (EDTA bis-are added Sodium), appropriate distilled water, stir, be settled in 500 mL volumetric flasks, obtain solution B;
(3) B solution being added dropwise in solution A, the mixed solution of formation first passes through muddy to clarification, more muddy, clarifying process again, The mixed solution formed during second time clarification is microemulsion C.Regulated power supply is adjusted to 5 V, and the titanium sheet of 2 × 3 cm is anode, 2 × The copper sheet of 3 cm is negative electrode, and microemulsion C is electrolyte, starts cell reaction, and the time is 1 hour.After reaction terminates, collect titanium Sheet, cleans each three times with dehydrated alcohol and distilled water, at room temperature natural drying, obtains end product.
Embodiment 4
A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the preparation of manganese dioxide nano-composite material Method, comprises the steps:
(1) in a beaker, add 15 g Tween 80s, 30 g n-octyl alcohols, hexamethylene 40 mL, stir, obtain solution A;
(2) in another beaker, 2.5 g manganese sulfates, 5 g ammonium fluorides, 3 g disodiumedetate (EDTA bis-are added Sodium), appropriate distilled water, stir, be settled in 500 mL volumetric flasks, obtain solution B;
(3) B solution being added dropwise in solution A, the mixed solution of formation first passes through muddy to clarification, more muddy, clarifying process again, The mixed solution formed during second time clarification is microemulsion C.Regulated power supply is adjusted to 5 V, and the titanium sheet of 2 × 3 cm is anode, 2 × The copper sheet of 3 cm is negative electrode, and microemulsion C is electrolyte, starts cell reaction, and the time is 1 hour.After reaction terminates, collect titanium Sheet, cleans each three times with dehydrated alcohol and distilled water, at room temperature natural drying, obtains end product.
Embodiment 5
A kind of surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the preparation of manganese dioxide nano-composite material Method, comprises the steps:
(1) in a beaker, add 10 g Polyethylene Glycol to isooctyl phenyl ether (triton x-100), 35 g hexanol, Normal octane 30 mL, stirs, obtains solution A;
(2) in another beaker, 2.5 g manganese sulfates, 5 g ammonium fluorides, 3 g disodiumedetate (EDTA bis-are added Sodium), appropriate distilled water, stir, be settled in 500 mL volumetric flasks, obtain solution B;
(3) B solution being added dropwise in solution A, the mixed solution of formation first passes through muddy to clarification, more muddy, clarifying process again, The mixed solution formed during second time clarification is microemulsion C.Regulated power supply is adjusted to 2.5 V, and the titanium sheet of 2 × 3 cm is anode, 2 The copper sheet of × 3 cm is negative electrode, and microemulsion C is electrolyte, starts cell reaction, and the time is 2 hours.After reaction terminates, collect titanium Sheet, cleans each three times with dehydrated alcohol and distilled water, at room temperature natural drying, obtains end product.
Comparative example 1
Experimental technique with embodiment 1, unique unlike, the consumption of manganese sulfate is 85 g, with the prepared microemulsion of this comparative example C, is adjusted to 2.5 V by regulated power supply, and the titanium sheet of 2 × 3 cm is anode, and the copper sheet of 2 × 3 cm is negative electrode, and microemulsion C is electrolysis Liquid, starts cell reaction, and the time is 2 hours.After reaction terminates, collect titanium sheet, clean each three times with dehydrated alcohol and distilled water, At room temperature natural drying, obtains end product.
The result of end product: characterize the composite obtained with SEM, finds composite material surface thickness relatively , there is crackle and caking in thickness, affects the overall performance of composite.
Comparative example 2
Experimental technique with embodiment 1, unique unlike, the consumption of ammonium fluoride is 50 g, with the prepared microemulsion of this comparative example C, is adjusted to 2.5 V by regulated power supply, and the titanium sheet of 2 × 3 cm is anode, and the copper sheet of 2 × 3 cm is negative electrode, and microemulsion C is electrolysis Liquid, starts cell reaction, and the time is 2 hours.After reaction terminates, collect titanium sheet, clean each three times with dehydrated alcohol and distilled water, At room temperature natural drying, obtains end product.
The result of end product: characterize the composite obtained with SEM, finds that composite material surface corrosion is tight Weight, its microstructure is destroyed, affects the overall performance of composite.
Comparative example 3
Experimental technique with embodiment 1, unique unlike, the consumption of SDS is 1 g, and the consumption of glycerol is 30 g, normal hexane Consumption is 60 g, the microemulsion C prepared by this comparative example, and regulated power supply is adjusted to 2.5 V, and the titanium sheet of 2 × 3 cm is anode, 2 The copper sheet of × 3 cm is negative electrode, and microemulsion C is electrolyte, starts cell reaction, and the time is 2 hours.After reaction terminates, collect titanium Sheet, cleans each three times with dehydrated alcohol and distilled water, at room temperature natural drying, obtains end product.
The result of end product: cannot obtain stable microemulsion, during electrolysis, voltage pulsation is relatively big, SEM and EDS characterizes knot Fruit display, the most successfully upper manganese dioxide of load.

Claims (10)

1. a surfactant assist in electrodeposition synthesizing anatase type titanium dioxide and the side of manganese dioxide nano-composite material Method, it is characterised in that comprise the following steps:
(1) surfactant, cosurfactant, oil phase are formed solution A with continuous stirring;
(2) manganese salt, villiaumite and disodiumedetate are formed solution B with continuous stirring, solution B is added dropwise to solution A In, the mixed solution formed during second time clarification is microemulsion C;
(3) with titanium sheet as anode, using microemulsion C as electrolyte solution, voltage range is 0.5~10V to carry out cell reaction extremely Electrolyte solution becomes cloudy;Titanium sheet after collection cell reaction is complete, cleaned, drying to obtain product;
Step (1) described surfactant, cosurfactant, the mass ratio of oil phase are 1:0.5~20:0.5~40;Step (2) concentration of described manganese salt is 0.01~0.9 mol/L;The concentration of villiaumite is 0.05~2.0 mol/L;Described ethylenediamine tetrem The addition of acid disodium is the amount dissolved so that manganese salt.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 1 and manganese dioxide are received The method of nano composite material, it is characterised in that step (1) described surfactant is selected from cationic surfactant, anion Surfactant or nonionic surfactant.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 2 and manganese dioxide are received The method of nano composite material, it is characterised in that described cationic surfactant is selected from cetyl trimethylammonium bromide, tetramethyl Ammonium chloride, bromododecane yl pyridines or dodecyl tributyl bromide phosphine.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 2 and manganese dioxide are received The method of nano composite material, it is characterised in that described anion surfactant is selected from sodium lauryl sulphate, detergent alkylate Sodium sulfonate, fatty alcohol-ether sodium sulfate or methyl hexadecanoate sodium sulfonate.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 2 and manganese dioxide The method of nano composite material, it is characterised in that described nonionic surfactant is selected from Triton X-100, Span 60, tells Temperature 80 or cocinic acid methyl ester polyoxyethylene ether.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 1 and manganese dioxide are received The method of nano composite material, it is characterised in that step (1) described cosurfactant be carbon number be the alcohol of 3~24.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 1 and manganese dioxide are received The method of nano composite material, it is characterised in that step (1) described oil phase be carbon number be alkane or the cycloalkane of 3~24.
Surfactant assist in electrodeposition synthesizing anatase type titanium dioxide the most according to claim 1 and manganese dioxide are received The method of nano composite material, it is characterised in that step (2) described manganese salt is manganese sulfate or manganese chloride, and villiaumite is ammonium fluoride or fluorine Change sodium.
9. described in any one of claim 1 to 8 method obtain titanium dioxide and manganese dioxide nano-composite material.
10. titanium dioxide described in claim 9 and the application of manganese dioxide nano-composite material.
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CN110563047A (en) * 2019-09-27 2019-12-13 岭南师范学院 Manganese dioxide composite material and preparation method thereof
CN111005031A (en) * 2019-12-27 2020-04-14 湘潭电化科技股份有限公司 Doped modified electrolytic manganese dioxide and preparation method and application thereof
CN113000043A (en) * 2021-02-21 2021-06-22 兰州大学 Regulating and controlling process of crystal face structure exposed on surface of titanium dioxide quantum dot and composite photocatalyst constructed by regulating and controlling process and two-dimensional material
CN113061910A (en) * 2021-03-22 2021-07-02 长沙学院 Electrolytic manganese dioxide and preparation method and application thereof
CN114843109A (en) * 2022-05-13 2022-08-02 福州大学 Sea urchin shaped MoS 2 Foamed nickel composite capacitor electrode material and preparation method thereof

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