CN106984334A - The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate - Google Patents

The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate Download PDF

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CN106984334A
CN106984334A CN201710146654.9A CN201710146654A CN106984334A CN 106984334 A CN106984334 A CN 106984334A CN 201710146654 A CN201710146654 A CN 201710146654A CN 106984334 A CN106984334 A CN 106984334A
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nanobelt
titanium sheet
package assembly
cobalt
titanium
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CN106984334B (en
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杨金虎
刘光磊
张棪
贺婷
冯楠
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Tongji University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/04Sulfides
    • B01J27/043Sulfides with iron group metals or platinum group metals
    • B01J35/40
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

The present invention relates to a kind of synthetic method of cobalt disulfide nanobelt package assembly in titanium sheet substrate, the steps such as the preparation including cobalt disulfide nanobelt in the preparation of cobaltosic oxide nano band in the synthesis of cobalt hydroxide nanobelt in titanium substrate, titanium substrate, titanium substrate, prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate.Compared with prior art, simple and easy to apply, reproducible, obtained cobalt disulfide nanobelt novel in shape of the invention, is evenly distributed on titanium-based basal surface, Stability Analysis of Structures, and with titanium substrate rigid contact, be conducive to electric transmission and interfacial reaction.This product can be widely used in electro-catalysis field directly as two-dimensional electrode material, with excellent electrolysis water H2-producing capacity.

Description

The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate
Technical field
The present invention relates to a kind of synthetic method for producing hydrogen catalyst, received more particularly, to cobalt disulfide in a kind of titanium sheet substrate Synthetic method of the rice with package assembly.
Background technology
Hydrogen energy source is as a kind of emerging regenerative resource, and its development technique is along with the research and development of production hydrogen catalyst material Continue to develop.Therefore develop with efficient catalytic performance, cost be low, free of contamination production hydrogen electrode material, have become hydrogen energy source The focus in field.Nano-electrode material has larger specific surface area and surface-active due to it, and hydrogen field exhibition is produced in electro-catalysis Good electrochemical applications value is revealed.At present, platinum-group noble metals material is known most efficient electro-catalysis production hydrogen material, But it is due to that its reserves is limited, cost is too high, causes its application to be restricted, therefore develop base metal production hydrogen and urges Agent, as metal sulfide, metal selenide, metal carbides etc. are cheap, easily made from new material, be just increasingly subject to The extensive concern of people.
In electrolysis aquatic products hydrogen system, the main function that production hydrogen catalyst is played is the change for reducing free energy in course of reaction Dynamic amplitude, so that evolving hydrogen reaction can be carried out smoothly descent.In the first row transition metal double sulfide (FeS2、CoS2、 NiS2) in molecular structure, metallic atom is connected with the sulphur atom of surrounding with octahedral form, this structure with biosystem Liberation of hydrogen catalyst hydrogenase avtive spot it is similar, it is particularly conductive with metalloid therefore with the performance of catalysis production hydrogen Property cobalt disulfide, show excellent catalytic activity in electrolysis aquatic products hydrogen field.At present, the growth in situ in conductive substrates Two dimension or three-diemsnional electrode material, the features such as being in close contact due to it without the fixation of adhesive, electrode material and substrate, from And the advantages such as transmission are more easy to easy to operate, electronics, it is increasingly becoming the study hotspot of production hydrogen electrode material.
The pattern of cobalt disulfide is grown in conductive substrates includes nano wire, nanometer sheet, pyrometric cone etc., but is due to pure phase The catalysis H2-producing capacity of cobalt disulfide can not have further lifting, therefore most work depend on and cobalt disulfide is doped Or synthesis bimetallic sulfide composite, cause that the flow for preparing material is cumbersome, controllability is not strong, product heterogeneity. Based on above mentioned problem, we have developed a kind of synthetic method of the package assembly cobalt disulfide nanobelt using titanium sheet as substrate, production Product novel in shape, Stability Analysis of Structures, yield is high and is evenly distributed, and easy to operate controllable, H2-producing capacity has a certain degree of lifting, And better than the catalytic performance for the non-package assembly cobalt disulfide nanobelt being transformed by solution phase precursor, it is expected to extensive use In fields such as ultracapacitor, lithium ion battery, full electrolysis aquatic products hydrogen production oxygen.
Chinese patent CN104402065B discloses the preparation method of spherical cobalt disulfide nano-powder, will be analytically pure CoCl2·6H2O, which is added in deionized water, obtains solution A;Analytically pure thiocarbamide SC (NH are added into solution A2)2, obtain molten Liquid B;Watery hydrochloric acid is added into solution B or sodium hydroxide solution regulation pH obtains solution C.The solution C of above-mentioned preparation is poured into hydro-thermal In reactor, reactor is then sealed, reactor is put into warm-pressing double-control microwave oven, selection temperature control mode carries out hydro-thermal Reaction, is then respectively adopted watery hydrochloric acid, and carbon disulfide, deionized water, absolute ethyl alcohol washing both obtains the spherical CoS of black2Nanometer Powder.The reaction system of the patent needs to carry out the regulation and calibration of pH value, and needs progress sufficiently clear after product is collected Wash to remove accessory substance.
The content of the invention
It is controllable it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind is easy to operate The synthetic method of cobalt disulfide nanobelt package assembly in the strong titanium sheet substrate of property.
The purpose of the present invention can be achieved through the following technical solutions:
The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate, using following steps:
(1) in titanium substrate cobalt hydroxide nanobelt synthesis:Cobalt salt and surfactant are weighed, water and N, N- diformazans is dissolved in The mixed liquor of base formamide (DMF), is added dropwise hydrogenperoxide steam generator, is then transferred to reactor, the clean naked titanium sheet of input, envelope Dress, is placed under high temperature and reacts, take out titanium sheet, clean and dry with ethanol and deionized water rinsing successively, obtains self assembly type Co(OH)3/Ti;
(2) in titanium substrate cobaltosic oxide nano band preparation:Take Co (OH) made from step (1)3/ Ti is placed in tube furnace In, high annealing, occurs hot dehydration decomposition reaction, obtains Co in atmosphere3O4/Ti;
(3) in titanium substrate cobalt disulfide nanobelt preparation:Take Co made from step (2)3O4/ Ti is placed in tube furnace, in Excessive sulphur powder is placed at the inlet end of tube furnace, under argon gas atmosphere protection, high temperature vulcanized reaction is carried out, then dry in the air naturally to Room temperature, takes out the titanium sheet for being loaded with cobalt disulfide nanobelt, i.e. CoS2/ Ti, is cleaned and dried successively with carbon disulfide and ethanol, Prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate.
Surfactant described in step (1) is hexadecyltrimethylammonium chloride, and described cobalt salt is six hydrations two Cobalt chloride, the cobalt salt of addition and the mass ratio of surfactant are 0.005~0.007:0.01~0.02.
The volume ratio of water and DMF described in step (1) is 0.8:1~1.2:1, mixed liquor is with adding The volume ratio of the hydrogenperoxide steam generator entered is 4:1~6:1.
The mass fraction of hydrogenperoxide steam generator described in step (1) is 30wt%.
Controlling reaction temperature is 140~160 DEG C in reactor described in step (1), and the reaction time is 1~20h.
The temperature of hot dehydration decomposition reaction is 250~350 DEG C in step (2), and the reaction time is 2~5h.
Step (3) high temperature vulcanization reaction temperature is 350~450 DEG C, and the reaction time is 2~6h, the argon gas flow velocity being passed through For 20~60sccm.
The sulphur powder and Co added in step (3)3O4/ Ti proportionate relationship is 1~2g/1~3cm2
Cobalt disulfide nanobelt package assembly in titanium sheet substrate is prepared, is nano strip of the homoepitaxial in titanium sheet Cobalt disulfide, the width of nanobelt is 3~5 μm, and length is 10~20 μm, and thickness average value is 130~170nm.
Compared with prior art, the cobalt disulfide nanometer of the titanium substrate over-assemble structure for the method synthesis that the present invention is used Band, novel in shape, crystallinity is high, Stability Analysis of Structures, is in close contact and is evenly distributed with titanium substrate, so as to ensure that the smooth of electronics Transmission and the sufficiently reaction of production hydrogen, easy to operate, controllability is strong.The hydrogen test of electrolysis aquatic products is carried out to product, and and by solution The cobalt disulfide nanobelt that presoma conversion is obtained is contrasted, test result indicates that in the curing of titanium substrate over-assemble structure More preferably, electric conductivity is stronger for cobalt nanobelt H2-producing capacity, therefore the material can be widely applied to electro-catalysis production hydrogen field.
In above-mentioned preparation technology parameter, the material proportional quantity of synthesis presoma cobalt hydroxide, and gas-phase presulfiding reaction Temperature, time, there is conclusive influence on the pattern of final product, structural stability and performance.Material proportional quantity is to hydrogen-oxygen Changing the pattern of cobalt nanobelt and the stability of structure has conclusive effect, if proportional quantity exceeds suitable scope, material A certain degree of change can occur for the pattern of material, also can phase strain differential in the structural stability of growth in situ in substrate;Gas phase sulfur Change the temperature and time of reaction, performance and structural stability to final product cobalt disulfide nanobelt can have an impact, temperature mistake The low and time is too short, product can be caused to vulcanize insufficient, thing is mutually impure, so that degradation, temperature is too high to cause product knot Structure bad stability, again such that performance is affected.
The reaction system of the present invention is independent of accurate pH value, and product is uniformly distributed in substrate surface, stabilized structure, only The titanium sheet for loading product need to be carried out into simple infiltration to clean, and gas phase reaction is simple, and accessory substance is few, success rate It is high.Simultaneously when carrying out the hydrogen test of electrolysis aquatic products, product of the present invention can carry out production hydrogen directly as working electrode, it is not necessary to carry out Drop coating, adhesive such as fix at the processing, with the advantage such as easy to operate, active area is big.And material closely connects with conductive substrates Touch, help lend some impetus to electric charge transfer, reaction barrier is reduced, so as to contribute to the lifting of the electrocatalysis characteristic of material.
Brief description of the drawings
Fig. 1 be embodiment 1-4 prepare different the hydro-thermal reaction times (1,5,10,20h) Co (OH) in corresponding titanium substrate3 The electron scanning micrograph of nanobelt;
Fig. 2 is the CoS in titanium substrate over-assemble structure prepared by embodiment 52The SEM of nanobelt and thoroughly Penetrate electron micrograph;
Fig. 3 is the CoS in titanium substrate over-assemble structure prepared by embodiment 52The Raman spectrum and X-ray diffraction of nanobelt Collection of illustrative plates;
Fig. 4 is solution Co (OH) prepared by embodiment 63The non-package assembly CoS that nanobelt and conversion are obtained2Nanobelt Electron micrograph;
Fig. 5 is the CoS in titanium substrate over-assemble structure prepared by embodiment 72Nanobelt is in acid and alkaline electrolyte Linear volt-ampere curve;
Fig. 6 is the CoS in titanium substrate over-assemble structure prepared by embodiment 72Impedance of the nanobelt in alkaline electrolyte Spectrogram.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.Following examples will be helpful to this area Technical staff further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the general of this area For logical technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made.These are belonged to Protection scope of the present invention.
Embodiment 1
Co (OH) in titanium sheet substrate3The synthesis of nanobelt
The hydration cobaltous dichlorides of 0.0065g six and 0.0125g hexadecyltrimethylammonium chlorides (CTAC) are weighed, 5mL is dissolved in The mixed liquor of water and 5mL DMFs (DMF), is added dropwise 2mL hydrogen peroxide (30%) solution, is transferred to 50mL Reactor, the treated clean naked titanium sheet of input, encapsulation is placed at 150 DEG C and reacted 1 hour, takes out titanium sheet, successively with ethanol and Deionized water rinsing is clean, in 60 DEG C of drying, obtains the Co (OH) of self assembly type3Nanobelt.Resulting sample such as Fig. 1 (a) Shown, when ESEM is shown in the reaction time for 1h, titanium-based basal surface is dendrimer materials, does not grow up to nanobelt pattern also, Illustrate Co (OH)3Really in titanium substrate surface in situ nucleation and start growth in situ.
Embodiment 2
Co (OH) in titanium sheet substrate3The synthesis of nanobelt
The hydration cobaltous dichlorides of 0.0065g six and 0.0125g hexadecyltrimethylammonium chlorides (CTAC) are weighed, 5mL is dissolved in The mixed liquor of water and 5mL DMFs (DMF), is added dropwise 2mL hydrogen peroxide (30%) solution, is transferred to 50mL Reactor, the treated clean naked titanium sheet of input, encapsulation is placed at 150 DEG C and reacted 5 hours, takes out titanium sheet, successively with ethanol and Deionized water rinsing is clean, in 60 DEG C of drying, obtains the Co (OH) of self assembly type3Nanobelt.Resulting sample such as Fig. 1 (b) Shown, when ESEM is shown in the reaction time for 5h, titanium-based basal surface has occurred in that length is about 3 microns, and width is about 1 The Co (OH) of micron3Nanobelt, illustrates Co (OH)3The pattern of small nanotube band has been grown into via 1h dendroid.
Embodiment 3
Co (OH) in titanium sheet substrate3The synthesis of nanobelt
The hydration cobaltous dichlorides of 0.0065g six and 0.0125g hexadecyltrimethylammonium chlorides (CTAC) are weighed, 5mL is dissolved in The mixed liquor of water and 5mL DMFs (DMF), is added dropwise 2mL hydrogen peroxide (30%) solution, is transferred to 50mL Reactor, the treated clean naked titanium sheet of input, encapsulation is placed at 150 DEG C and reacted 10 hours, takes out titanium sheet, ethanol is used successively It is clean with deionized water rinsing, in 60 DEG C of drying, obtain the Co (OH) of self assembly type3Nanobelt.Resulting sample such as Fig. 1 (c) shown in, when ESEM is shown in the reaction time for 10h, Co (OH)3Nanobelt has been evenly distributed on titanium-based basal surface, Stability Analysis of Structures, and substrate is overgrowed with, size has further increase compared with 5h again.
Embodiment 4
Co (OH) in titanium sheet substrate3The synthesis of nanobelt
The hydration cobaltous dichlorides of 0.0065g six and 0.0125g hexadecyltrimethylammonium chlorides (CTAC) are weighed, 5mL is dissolved in The mixed liquor of water and 5mL DMFs (DMF), is added dropwise 2mL hydrogen peroxide (30%) solution, is transferred to 50mL Reactor, the treated clean naked titanium sheet of input, encapsulation is placed at 150 DEG C and reacted 20 hours, takes out titanium sheet, ethanol is used successively It is clean with deionized water rinsing, in 60 DEG C of drying, obtain the Co (OH) of self assembly type3Nanobelt.Resulting sample such as Fig. 1 (d) shown in, when ESEM is shown in the reaction time for 20h, Co (OH)3What the size and degree of distribution and 10h of nanobelt were obtained Sample is quite similar, illustrates that nanobelt is fully self-assembled to substrate surface.
Embodiment 5
The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate
The hydration cobaltous dichlorides of 0.0065g six and 0.0125g hexadecyltrimethylammonium chlorides (CTAC) are weighed, 5mL is dissolved in Water and 5mLN, the mixed liquor of dinethylformamide (DMF) are added dropwise 2mL hydrogen peroxide (30%) solution, are transferred to 50mL anti- Answer kettle, the treated clean naked titanium sheet of input, encapsulation is placed at 150 DEG C and reacted 20 hours, takes out titanium sheet, successively with ethanol and Deionized water rinsing is clean, in 60 DEG C of drying, obtains the Co (OH) of self assembly type3Nanobelt.Then by Co (OH)3/ Ti is placed in pipe In formula stove, tube furnace does not encapsulate two ends, it is passed through 300 DEG C in atmosphere, 2h high annealing occurs hot dehydration and decomposes anti- Should, obtain the Co of self assembly type3O4Nanobelt.By obtained Co3O4/ Ti is placed in tube furnace, is put at the inlet end of tube furnace 2g sulphur powders are put, in flow velocity under 25sccm argon gas atmosphere protection, 400 DEG C vulcanize 6 hours, and question response device dries in the air to room naturally Temperature, takes out the titanium sheet for being loaded with cobalt disulfide nanobelt, i.e. CoS2/ Ti, is cleaned successively with carbon disulfide and ethanol, in 60 DEG C of bakings It is dry.Resulting sample is long as shown in Fig. 2 Fig. 2 (a), the ESEM of (b) show that the width of nanobelt is about 4~5 μm Degree is about 15~20 μm, CoS2The thickness average value of nanobelt is about~150nm, is illustrated through a series of converted in-situs, nanometer Band pattern is maintained.Fig. 2 (c), (d) transmission electron microscope show nanobelt be made up of little crystal grain, be polycrystalline structure, and with compared with Good crystallinity.Fig. 3 (a), (b) show have the CoS of package assembly2The XRD of the nanobelt and CoS of pure phase2Correspondence, and drawing completely Graceful further testimonial material is pure phase CoS2
Embodiment 6
The synthesis of the cobalt disulfide nanobelt of non-package assembly without substrate
The hydration cobaltous dichlorides of 0.0065g six and 0.0125g hexadecyltrimethylammonium chlorides (CTAC) are weighed, 5mL is dissolved in The mixed liquor of water and 5mL DMFs (DMF), is added dropwise 2mL hydrogen peroxide (30%) solution, is transferred to 50mL Reactor, encapsulation is placed at 150 DEG C and reacted 20 hours, collects solution product, is washed successively with ethanol and deionized water centrifugation Wash, rotating speed is 5000r/min, in 60 DEG C of drying, obtain the Co (OH) of non-self assembly type3Shown in nanobelt, such as Fig. 4 (a), pattern With self assembly Co (OH)3It is identical.Then by Co (OH)3Nanobelt is placed in tube furnace, and tube furnace does not encapsulate two ends, makes it in sky By 300 DEG C of 2h high annealing in gas, occur hot dehydration decomposition reaction, obtain the Co of non-self assembly type3O4Nanobelt.Will system The Co of the non-self assembly type obtained3O4Nanobelt is placed in tube furnace, and 2g sulphur powders are placed at the inlet end of tube furnace, are in flow velocity Under 25sccm argon gas atmosphere protection, 400 DEG C vulcanize 6 hours, and question response device dries in the air to room temperature naturally, take out product, i.e., it is non-from Packaging CoS2Nanobelt, is cleaned successively with carbon disulfide and ethanol, in 60 DEG C of drying.The CoS of gained2As shown in Fig. 4 (b), still It is so nanobelt pattern, with the CoS in substrate over-assemble2It is identical.
Embodiment 7
In titanium sheet substrate over-assemble cobalt disulfide nanobelt and non-assembling cobalt disulfide nanobelt electrolysis aquatic products hydrogen Experiment.
Laboratory apparatus:CHI660E electrochemical workstations
Three-electrode system:Reference electrode (saturated calomel electrode), to electrode (coated graphite rod electrrode), working electrode (assembling tie Structure CoS2/ Ti, non-package assembly CoS2(aq.)-Ti, naked titanium sheet)
Produce hydrogen electrolyte:Prepare 0.5M H2SO4Solution, 1M KOH solutions, and tested with acidometer and record two kinds of electrolysis The pH value of liquid.
Produce hydrogen method of testing:Linear voltammetry, Electrode with Electrochemical Impedance Spectroscopy
Instrument parameter:Linear volt-ampere curve:Potential range is 0.1v~-0.25V (0.5M H2SO4Solution) and 0.1v~- 0.4V (1M KOH solutions), it is 2mV/s to sweep speed;Electrochemical impedance:Amplitude 5mV, frequency range 0.01Hz~105Hz。
The structure of working electrode:
(1) package assembly cobalt disulfide nanobelt (package assembly CoS2/Ti):
With the substrate with material of the certain area of scissors clip, and wipe the material of long position off, titanium sheet substrate is straight Connect as working electrode, be connected by platinum plate electrode folder with electrochemical workstation;
(2) non-package assembly cobalt disulfide nanobelt (non-package assembly CoS2(aq.)-Ti):
Quantitative cobalt disulfide nanobelt powder is weighed, is scattered in ethanol and water mixed liquid that (ethanol and water volume ratio are 1: 1), oscillator vibration 30min, drop coating is in clean naked titanium sheet, it is ensured that material load amount is 0.7mg/cm2, then drip successively Plus the Nafion ethanol dilution of 2.5 microlitre 0.05% (mass fraction) three times, pass through platinum plate electrode folder and electrochemistry after drying Work station is connected;
(3) naked titanium sheet, platinum filament are used to contrast as working electrode, and cling with insulating tape many of naked titanium sheet and platinum filament Remaining part position, to ensure the production hydrogen area of electrode as fixed value.
Experimental procedure:
(1) 15mL0.5M H are taken2SO4Solution is in electrolytic cell, and logical nitrogen about 15min makes electrolyte by nitrogen saturation, installs Three-electrode system, tests package assembly CoS respectively2/ Ti, non-package assembly CoS2(aq.)-Ti, platinum filament, the linear volt of naked titanium sheet Pacify curve;
(2) 15mL1M KOH solutions are taken in electrolytic cell, logical nitrogen about 15min makes electrolyte by nitrogen saturation, surveys respectively Try package assembly CoS2/ Ti, non-package assembly CoS2(aq.)-Ti, platinum filament, the linear volt-ampere curve of naked titanium sheet;
(3) take 15mL 1M KOH solutions in electrolytic cell, logical nitrogen about 15min makes electrolyte by nitrogen saturation, surveys respectively Try package assembly CoS2/ Ti, non-package assembly CoS2(aq.)-Ti electrochemical impedance;
(4) every time before test, electrolyte, which is intended to logical nitrogen 15min, makes saturation.Linearity curve is compensated through manual ohm Processing.Potential correction is the formula of reversible hydrogen electrode:E (RHE)=E (SCE)+0.242+0.059pH.
Interpretation of result:Fig. 5 (a) and (b) are respectively acidic electrolysis bath (0.5M H2SO4) and alkaline electrolyte (1M KOH) In, package assembly CoS2/ Ti, non-package assembly CoS2(aq.) the linear volt-ampere curve of-Ti, platinum filament and naked titanium sheet, by contrast may be used It was found that, package assembly CoS2/ Ti is illustrated better than non-package assembly CoS2(aq.)-Ti H2-producing capacity.Fig. 6 is alkaline electrolysis In liquid, package assembly CoS2/ Ti, non-package assembly CoS2(aq.)-Ti impedance spectra, it can be found that package assembly CoS2/Ti With better electric conductivity.The result of performance test is further demonstrated, and assembling effect promotes material and substrate interface The electric charge transfer at place, and structure of the material of substrate with bigger catalytic active area and stabilization is uniformly distributed in, so that Improve it and produce hydrogen catalysis effect.
Embodiment 8
The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate, using following steps:
(1) in titanium substrate cobalt hydroxide nanobelt synthesis:It is 0.005 in mass ratio:0.01 weighs six hydration dichlorides Cobalt and surfactant hexadecyltrimethylammonium chloride, are dissolved in the mixed liquor of water and DMF (DMF), water and The volume ratio of DMF is 0.8:1, the hydrogenperoxide steam generator that mass fraction is 30wt%, mixed liquor is added dropwise Volume ratio with the hydrogenperoxide steam generator of addition is 4:1, reactor is then transferred to, the clean naked titanium sheet of input, encapsulation is placed in 140 DEG C reaction 10h, takes out titanium sheet, clean and dry with ethanol and deionized water rinsing successively, obtains the Co (OH) of self assembly type3/ Ti;
(2) in titanium substrate cobaltosic oxide nano band preparation:Take Co (OH) made from step (1)3/ Ti is placed in tube furnace In, high annealing, occurs hot dehydration decomposition reaction in atmosphere, and reaction temperature is 250 DEG C, and the reaction time is 5h, obtains Co3O4/ Ti;
(3) in titanium substrate cobalt disulfide nanobelt preparation:Take Co made from step (2)3O4/ Ti is placed in tube furnace, in Excessive sulphur powder, the sulphur powder and Co of addition are placed at the inlet end of tube furnace3O4/ Ti proportionate relationship is 1g/1cm2, in argon gas Under atmosphere protection, high temperature vulcanized reaction is carried out, high temperature vulcanized reaction temperature is 350 DEG C, and the reaction time is 6h, the argon gas stream being passed through Speed is 20sccm, then dries in the air naturally to room temperature, takes out the titanium sheet for being loaded with cobalt disulfide nanobelt, i.e. CoS2/ Ti, uses curing Carbon and ethanol are cleaned and dried successively, prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate.
Cobalt disulfide nanobelt package assembly in titanium sheet substrate is prepared, is nano strip of the homoepitaxial in titanium sheet Cobalt disulfide, the width of nanobelt is about 3~4 μm, and length is about 10~15 μm, and thickness average value is about~130nm.
Embodiment 9
The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate, using following steps:
(1) in titanium substrate cobalt hydroxide nanobelt synthesis:It is 0.006 in mass ratio:0.01 weighs six hydration dichlorides Cobalt and surfactant hexadecyltrimethylammonium chloride, are dissolved in the mixed liquor of water and DMF (DMF), water and The volume ratio of DMF is 1:1, be added dropwise mass fraction be 30wt% hydrogenperoxide steam generator, mixed liquor with The volume ratio of the hydrogenperoxide steam generator of addition is 5:1, reactor is then transferred to, the clean naked titanium sheet of input, encapsulation is placed in 150 DEG C 10h is reacted, titanium sheet is taken out, it is clean and dry with ethanol and deionized water rinsing successively, obtain the Co (OH) of self assembly type3/Ti;
(2) in titanium substrate cobaltosic oxide nano band preparation:Take Co (OH) made from step (1)3/ Ti is placed in tube furnace In, high annealing, occurs hot dehydration decomposition reaction in atmosphere, and reaction temperature is 300 DEG C, and the reaction time is 3h, obtains Co3O4/ Ti;
(3) in titanium substrate cobalt disulfide nanobelt preparation:Take Co made from step (2)3O4/ Ti is placed in tube furnace, in Excessive sulphur powder, the sulphur powder and Co of addition are placed at the inlet end of tube furnace3O4/ Ti proportionate relationship is 1g/2cm2, in argon gas Under atmosphere protection, high temperature vulcanized reaction is carried out, high temperature vulcanized reaction temperature is 400 DEG C, and the reaction time is 3h, the argon gas stream being passed through Speed is 30sccm, then dries in the air naturally to room temperature, takes out the titanium sheet for being loaded with cobalt disulfide nanobelt, i.e. CoS2/ Ti, uses curing Carbon and ethanol are cleaned and dried successively, prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate.
Cobalt disulfide nanobelt package assembly in titanium sheet substrate is prepared, is nano strip of the homoepitaxial in titanium sheet Cobalt disulfide, the width of nanobelt is about 3~4 μm, and length is about 15~20 μm, and thickness average value is about~150nm.
Embodiment 10
The synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate, using following steps:
(1) in titanium substrate cobalt hydroxide nanobelt synthesis:It is 0.007 in mass ratio:0.02 weighs six hydration dichlorides Cobalt and surfactant hexadecyltrimethylammonium chloride, are dissolved in the mixed liquor of water and DMF (DMF), water and The volume ratio of DMF is 1.2:1, the hydrogenperoxide steam generator that mass fraction is 30wt%, mixed liquor is added dropwise Volume ratio with the hydrogenperoxide steam generator of addition is 6:1, reactor is then transferred to, the clean naked titanium sheet of input, encapsulation is placed in 160 DEG C reaction 20h, takes out titanium sheet, clean and dry with ethanol and deionized water rinsing successively, obtains the Co (OH) of self assembly type3/ Ti;
(2) in titanium substrate cobaltosic oxide nano band preparation:Take Co (OH) made from step (1)3/ Ti is placed in tube furnace In, high annealing, occurs hot dehydration decomposition reaction in atmosphere, and reaction temperature is 350 DEG C, and the reaction time is 2h, obtains Co3O4/ Ti;
(3) in titanium substrate cobalt disulfide nanobelt preparation:Take Co made from step (2)3O4/ Ti is placed in tube furnace, in Excessive sulphur powder, the sulphur powder and Co of addition are placed at the inlet end of tube furnace3O4/ Ti proportionate relationship is 2g/3cm2, in argon gas Under atmosphere protection, high temperature vulcanized reaction is carried out, high temperature vulcanized reaction temperature is 450 DEG C, and the reaction time is 2h, the argon gas stream being passed through Speed is 60sccm, then dries in the air naturally to room temperature, takes out the titanium sheet for being loaded with cobalt disulfide nanobelt, i.e. CoS2/ Ti, uses curing Carbon and ethanol are cleaned and dried successively, prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate.
Cobalt disulfide nanobelt package assembly in titanium sheet substrate is prepared, is nano strip of the homoepitaxial in titanium sheet Cobalt disulfide, the width of nanobelt is about 4~5 μm, and length is about 15~20 μm, and thickness average value is about~170nm.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring the substantive content of the present invention.

Claims (10)

1. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate, it is characterised in that this method use with Lower step:
(1) in titanium substrate cobalt hydroxide nanobelt synthesis:Cobalt salt and surfactant are weighed, water and N, N- dimethyl methyls is dissolved in The mixed liquor of acid amides (DMF), is added dropwise hydrogenperoxide steam generator, is then transferred to reactor, and the clean naked titanium sheet of input, encapsulation is put In being reacted under high temperature, titanium sheet is taken out, it is clean and dry with ethanol and deionized water rinsing successively, growth in situ is obtained in titanium substrate Co (OH)3/Ti;
(2) in titanium substrate cobaltosic oxide nano band preparation:Take Co (OH) made from step (1)3/ Ti is placed in tube furnace, Air high temperature is annealed, and is occurred hot dehydration decomposition reaction, is obtained Co3O4/Ti;
(3) in titanium substrate cobalt disulfide nanobelt preparation:Take Co made from step (2)3O4/ Ti is placed in tube furnace, in tubular type Excessive sulphur powder is placed at the inlet end of stove, under argon gas atmosphere protection, high temperature vulcanized reaction is carried out, then dries in the air naturally to room Temperature, takes out the titanium sheet for being loaded with cobalt disulfide nanobelt, i.e. CoS2/ Ti, is infiltrated and cleans and dry successively with carbon disulfide and ethanol It is dry, prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate.
2. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, the surfactant described in step (1) is hexadecyltrimethylammonium chloride, described cobalt salt is six hydration dichloros Change cobalt, the cobalt salt of addition and the mass ratio of surfactant are 0.005~0.007:0.01~0.02.
3. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, the volume ratio of water and DMF described in step (1) is 0.8:1~1.2:1, mixed liquor is with adding Hydrogenperoxide steam generator volume ratio be 4:1~6:1.
4. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, the mass fraction of the hydrogenperoxide steam generator described in step (1) is 30wt%.
5. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, controlling reaction temperature is 140~160 DEG C in the reactor described in step (1), the reaction time is 1~20h.
6. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, the temperature of hot dehydration decomposition reaction is 250~350 DEG C in step (2), the reaction time is 2~5h.
7. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, step (3) high temperature vulcanization reaction temperature is 350~450 DEG C, and the reaction time is 2~6h, and the argon gas flow velocity being passed through is 20~60sccm.
8. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, the sulphur powder and Co added in step (3)3O4/ Ti proportionate relationship is 1~2g/1~3cm2
9. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, prepare cobalt disulfide nanobelt package assembly in titanium sheet substrate, be the uniform nano strip being assembled in titanium sheet Cobalt disulfide, the width of nanobelt is 3~5 μm, and length is 10~20 μm, and thickness average value is 130~170nm.
10. the synthetic method of cobalt disulfide nanobelt package assembly in a kind of titanium sheet substrate according to claim 1, it is special Levy and be, preparing cobalt disulfide nanobelt package assembly in titanium sheet substrate has electrolysis aquatic products hydrogen application.
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CN108396330A (en) * 2018-03-09 2018-08-14 三峡大学 A kind of preparation method of molybdenum disulfide nano sheet@cobalt sulfide nanoneedles original position array electrode
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