CN105080577A - Cobalt di-selenide nanobelt assembling sphere and preparation method and application thereof - Google Patents
Cobalt di-selenide nanobelt assembling sphere and preparation method and application thereof Download PDFInfo
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- CN105080577A CN105080577A CN201510578454.1A CN201510578454A CN105080577A CN 105080577 A CN105080577 A CN 105080577A CN 201510578454 A CN201510578454 A CN 201510578454A CN 105080577 A CN105080577 A CN 105080577A
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Abstract
The invention provides a preparation method for a cobalt di-selenide nanobelt assembling sphere. The preparation method comprises the following steps: mixing water, organic amine, a cobalt source, a selenium source and carbon dots to obtain a mixture, and then reacting the obtained mixture to obtain the cobalt di-selenide nanobelt assembling sphere. In the process of preparing the cobalt di-selenide nanobelt assembling sphere, adding of the carbon dots participates in the nucleation growth of a cobalt di-selenide nanobelt, and the cobalt di-selenide nanobelt is induced to be assembled into the sphere; the obtained carbon dot-modified cobalt di-selenide nanobelt assembling sphere can be used as a dual-function catalyst for electro-catalysis hydrogen hydrolysis and oxygen absorption reaction. The preparation method is low in production cost, and the synthesis method is simple; large-scale production can be realized; when the prepared carbon dot-modified cobalt di-selenide nanobelt assembling sphere is used as the catalyst for electro-catalysis hydrogen hydrolysis and oxygen absorption reaction is high in activity and stability.
Description
Technical field
The present invention relates to catalyst technical field, particularly relate to two cobaltous selenide nanobelt assembling balls, its preparation method and application thereof.
Background technology
At present, the energy becomes the key issue of restriction human development.Water-as potential energy source maximum at present, how water decomposition is that hydrogen and oxygen obtain the renewable sources of energy by high efficiency, low cost ground, is subject to everybody attention gradually.Usual hydrolytic process can relate to evolving hydrogen reaction and oxygen evolution reaction, due to slow dynamics and the high cost catalyst of above-mentioned reaction, constrain the development of Hydrolysis Industry to a great extent, therefore searching has high activity, low cost, is easy to the most important thing that the extensive catalyst prepared is developing industryization hydrolysis field.In recent years, study hotspot both domestic and external mainly concentrates on the oxygen-separating catalyst in efficient liberation of hydrogen catalyst under research acidic electrolyte bath or alkaline electrolyte, and preparation has the important directions that low cost catalyst that is dual or multi-catalytic activity is current catalyst research field.
Cobalt-based chalcogenide, due to aboundresources and the potential application at catalytic field, more and more receives everybody concern.Applicant has prepared the Transition-metal dichalcogenide of series of new in research process, as iron sulfide, nickelous selenide, two cobaltous selenides etc., and find that Transition-metal dichalcogenide has certain electricity and urges liberation of hydrogen and oxygen evolution activity, especially two cobaltous selenide nanobelts and composite hybridization material thereof show excellent electrocatalytic hydrogen evolution and oxygen evolution activity.Research discovery two cobaltous selenide nanobelt hybrid material has excellent catalytic activity usually in one aspect, but two cobaltous selenides itself are a kind of materials with multi-functional catalysis potentiality, and its preparation method is simple, easy extension is produced, rich reserves, how to select suitable functional material to carry out modification to it, thus the catalyst obtaining having high activity and good stability is the Research Challenges of this type of material.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of two cobaltous selenide nanobelt assembling balls and preparation method thereof, and two cobaltous selenide nanobelt assembling balls prepared by the application have high activity and good stability as catalyst for water electrolysis.
In view of this, this application provides a kind of preparation method of two cobaltous selenide nanobelt assembling balls, comprise the following steps:
Water, organic amine, cobalt source, selenium source are mixed with carbon quantum dot, then the mixture obtained is reacted, obtain two cobaltous selenide nanobelt assembling balls.
Preferably, described cobalt source is cobalt acetate, described selenium source is sodium selenite.
Preferably, described organic amine is diethylenetriamine, triethylene tetramine or TEPA.
Preferably, described reaction is specially:
The mixture obtained is placed in hydrothermal reaction kettle seal, then at 140 ~ 200 DEG C, reacts 12 ~ 24h.
Preferably, the volume ratio of described water and organic amine is 1:2, and the mol ratio of described cobalt source and selenium source is 1:1.
Preferably, described cobalt source, described water and the cumulative volume of organic amine and the proportionate relationship of described carbon quantum dot are (0.5 ~ 2) mmol:(35 ~ 40) ml:(0.02 ~ 0.1) g.
Present invention also provides two cobaltous selenide nanobelt assembling balls prepared by the preparation method described in such scheme.
Preferably, described two cobaltous selenide nanobelts assembling balls two cobaltous selenide nanobelts on be distributed with carbon quantum dot.
Present invention also provides two application of cobaltous selenide nanobelt assembling ball in catalyst for water electrolysis described in prepared by the preparation method described in such scheme or such scheme.
This application provides a kind of preparation method of two cobaltous selenide nanobelt assembling balls.In the process of preparation two cobaltous selenide nanobelt, water, organic amine, cobalt source, selenium source are mixed with carbon quantum dot, then the mixture obtained is reacted, obtain two cobaltous selenide nanobelt assembling balls.The application two cobaltous selenide nanobelts assembling balls be two cobaltous selenide nanobelts in growth course because the participation induced nano band of carbon quantum dot is formed, the two cobaltous selenide nanobelts modified through carbon quantum dot can improve on the one hand the electronic structure of active site cobalt, the three-dimensional structure of the nanobelt assembling ball of carbon quantum dot induction on the one hand, be conducive to it as catalyst electrolyte and the transmission producing gas in catalytic process, therefore, two cobaltous selenide nanobelt assembling balls prepared by the application have high activity and good stability as catalyst for water electrolysis.
Accompanying drawing explanation
Fig. 1 is pure CoSe prepared by the embodiment of the present invention 1
2sEM (SEM) image of nanobelt, illustration is the enlarged drawing of transmission electron microscope (TEM);
Fig. 2 is CDs-CoSe prepared by the embodiment of the present invention 2
2the TEM figure of composite, illustration is that partial enlargement TEM schemes;
Fig. 3 is that the high-resolution TEM of CDs composite prepared by the embodiment of the present invention 2 schemes, and right part of flg is that partial enlargement carbon quantum dot high-resolution TEM schemes;
Fig. 4 is pure CoSe prepared by the embodiment of the present invention 1
2cDs-CoSe prepared by nanobelt and the embodiment of the present invention 2
2the X-ray electronic diffraction collection of illustrative plates of composite;
Fig. 5 is CDs-CoSe prepared by the embodiment of the present invention 2
2the STEM-mapping figure of composite;
The pure CoSe that Fig. 6 is glass-carbon electrode, prepared by 20wt% commercialization platinum carbon, the embodiment of the present invention 1
2cDs-CoSe prepared by nanobelt and the embodiment of the present invention 2
2the electrocatalytic hydrogen evolution catalytic activity test curve figure of composite;
Fig. 7 is pure CoSe prepared by the embodiment of the present invention 1
2cDs-CoSe prepared by nanobelt and the embodiment of the present invention 2
2the electrocatalytic hydrogen evolution stability test curve map of composite;
Fig. 8 is CDs-CoSe prepared by the embodiment of the present invention 2
2the pure CoSe of composite, commercial oxidation ruthenium and the embodiment of the present invention 1 preparation
2oxygen catalytic activity test curve figure is analysed in the electro-catalysis of nanobelt;
Fig. 9 is CDs-CoSe prepared by the embodiment of the present invention 2
2oxygen catalytic stability test curve figure is analysed in the electro-catalysis of composite;
Figure 10 is CDs-CoSe prepared by the embodiment of the present invention 3
2the TEM figure of composite, illustration is that partial enlargement TEM schemes;
Figure 11 is CDs-CoSe prepared by the embodiment of the present invention 4
2the TEM figure of composite, illustration is that partial enlargement TEM schemes;
Figure 12 is the CDs-CoSe prepared under different predecessor input amount
2the electrocatalytic hydrogen evolution active testing curve map of assembling ball;
Figure 13 is the two TEM figures of cobaltous selenide nanobelt assembling ball under the differential responses time described in the application.
Detailed description of the invention
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of preparation method of two cobaltous selenide nanobelt assembling balls, comprise the following steps:
Water, organic amine, cobalt source, selenium source are mixed with carbon quantum dot, then the mixture obtained is reacted, obtain two cobaltous selenide nanobelt assembling balls.
In the process of preparation two cobaltous selenide nanobelt assembling ball, carbon quantum dot add the nucleating growth that membership participates in two cobaltous selenide nanobelts, and induced nano band assembling balling-up, namely obtain the two cobaltous selenide nanobelt assembling balls that carbon quantum dot is modified, it can be used as the bifunctional catalyst of electro-catalysis hydrolysis liberation of hydrogen, oxygen evolution reaction.
In the process of preparation two cobaltous selenide nanobelt assembling ball, first raw material mixes by the application.Carbon quantum dot described in the application and various metal quantum point similar, carbon quantum dot can emit a brilliant light under light conditions.Carbon quantum dot described in the application is that the applicant utilizes pollen directly to prepare, specifically can with reference to Adv.Sci.2015,2,1500002.
In the process of mixing, the volume ratio of described water and organic amine is preferably 1:2, the mol ratio of described cobalt source and described selenium source is preferably 1:1, and the ratio of the mole in cobalt source described in the application, described water and the cumulative volume of described organic amine mixed solution and the quality of described carbon quantum dot is preferably (0.5 ~ 2) mmol:(35 ~ 40) mL:(0.02 ~ 0.1) g.Described in the application, cobalt source is preferably cobalt acetate, and described selenium source is preferably sodium selenite; Described organic amine is preferably diethylenetriamine, triethylene tetramine or TEPA, is more preferably diethylenetriamine.
According to the present invention, after raw material mixing, mixture is preferably reacted under the environment of HTHP.Mixture described in the application reacts and specifically refers under the environment of HTHP:
Described mixture is placed in hydrothermal reaction kettle seal, then at 140 DEG C ~ 200 DEG C, reacts 12 ~ 24h.
In above-mentioned course of reaction, organic amine molecule reacts with water and is protonated under high-temperature solvent heat condition, thus form the amine molecule of positively charged, protonated amine molecule is by being connected to close in two selenizing cobalt layers with selenium coordination, the amine with linear structure serves template molecule effect, and causing being formed layered nano-structure, the growth that carbon quantum dot can participate in nanobelt is carried among nanobelt.The concrete forming process of two cobaltous selenide nanobelt assembling balls as shown in figure 13, as seen from the figure, in the presence of carbon quantum dot, two cobaltous selenide nanobelts can be reunited and be formed aggregate together, initial reaction stage aggregate flocks together many short-term structures of being around scattered, along with reaction proceeds to 8h, the a large amount of laminated structure of aggregate superficial growth, continue reaction 18h, obtain the assembling ball of a large amount of banded structure of many inner consolidation superficial growths, continue reaction assembling spheroid to continue to grow up, band onto surface structure tails off.
Two cobaltous selenide nanobelt assembling ball (CDs-CoSe prepared by the preparation method that present invention also provides described in such scheme
2).Described two cobaltous selenide nanobelt assembling ball (CDs-CoSe
2) surface distributed has carbon quantum dot.
Present invention also provides the CDs-CoSe described in prepared by such scheme or such scheme
2the application of assembling ball in catalyst for water electrolysis, its catalyst that can be used for electro-catalysis hydrolysis evolving hydrogen reaction and analyse oxygen.
CDs-CoSe described in the application
2the preparation that assembling ball is used for electro-catalysis hydrolysis liberation of hydrogen test electrode comprises the following steps:
(1) three-electrode system is adopted, with CDs-CoSe of the present invention
2assembling ball is as working electrode, and saturated calomel electrode is as reference electrode, and platinized platinum is as to electrode;
(2) electrolyte is the sulfuric acid solution of 0.5M, logical hydrogen before test, tests electro-catalysis hydrolysis hydrogen evolution activity under room temperature condition.
CDs-CoSe of the present invention
2the preparation that assembling ball analyses oxygen test electrode for electro-catalysis hydrolysis comprises the following steps:
(1) three-electrode system is adopted, with CDs-CoSe of the present invention
2assembling ball is as working electrode, and silver/silver chloride electrode is as reference electrode, and platinized platinum is as to electrode;
(2) electrolyte is the potassium hydroxide solution of 0.1M, logical oxygen before test; Electro-catalysis hydrolysis oxygen evolution activity is tested under room temperature condition;
(3) stability test is in the potassium hydroxide solution of 0.1M, under constant voltage, tests its curent change.
This application provides a kind of two cobaltous selenide nanobelt assembling balls, its preparation method and application thereof.Two cobaltous selenide nanobelts assembling balls described in the application are that a kind of carbon quantum dot induces two cobaltous selenide nanobelts assembling balls, carbon quantum dot add the nucleating growth that membership participates in two cobaltous selenide nanobelts, and induced nano band assembling balling-up; Detailed process is: cobalt source, selenium source and carbon quantum dot are dissolved in the mixed solvent of organic amine and water formation, then react under high temperature and high pressure environment, and obtain the two cobaltous selenide nanobelts assembling balls that carbon quantum dot is modified, it can be used as electro-catalysis hydrolyst.
The present invention utilizes carbon quantum dot to induce two cobaltous selenide nanobelt CoSe
2the synthetic method of assembling ball is simple, and low production cost, can realize large-scale production, adopts two cobaltous selenide nanobelt CoSe prepared by the present invention
2assembling ball has good difunctional electrocatalytic hydrogen evolution, oxygen evolution activity and stability, and it is active still to have good electrocatalytic hydrogen evolution in neutral conditions, can be applicable to brine electrolysis industry and electrochemistry hydrogen manufacturing system etc.
In order to understand the present invention further, be described in detail to two cobaltous selenide nanobelt assembling balls provided by the invention, its preparation method and application thereof below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
The carbon quantum dot adopted in following embodiment is that applicant utilizes pollen directly to prepare, and concrete preparation process is published in Adv.Sci.2015,2,1500002.
Embodiment 1
The cobalt acetate of 1mmol and the sodium selenite of 1mmol are dissolved in the diethylenetriamine and water mixed solution that volume ratio is 2:1, stir 40min; Said mixture to be transferred in teflon-lined 50mL reactor and to seal, in temperature control oven, at 180 DEG C, reacting 18h, take out and be cooled to room temperature after completing reaction; Products therefrom ethanol purge, and in the vacuum environment of 60 DEG C dry 8 hours, obtain pure CoSe
2nanobelt.
CoSe prepared by the present embodiment
2as shown in Figure 1, illustration is TEM picture to the SEM figure of nanobelt.Can see from SEM figure, simple CoSe
2nanobelt soilless sticking body exists, and TEM picture display width is the CoSe of 200nm ~ 500nm
2nanobelt is random to be uniformly distributed.
Embodiment 2
The cobalt acetate of 1mmol, the sodium selenite of 1mmol and 0.1g carbon quantum dot are dissolved in the diethylenetriamine and water mixed solution that volume ratio is 2:1, stir 40 minutes; Said mixture to be transferred in teflon-lined 50mL reactor and to seal, reacting 18 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Products therefrom ethanol purge, and in the vacuum environment of 60 DEG C dry 8 hours, obtain CDs-CoSe
2composite.
CDs-CoSe prepared by the present embodiment
2as shown in Figure 2, illustration is partial enlargement TEM picture to the TEM figure of composite.As we can see from the figure, CoSe
2no longer exist with the nanobelt form of dispersion, but be wound around the ball of assembling into about 500nm size, as can be seen from the TEM figure of partial enlargement, CoSe
2spherical assembly still has layer structure, shows at the pure CoSe of preparation
2in the process of nanobelt, the introducing of carbon quantum dot can induce CoSe
2growth, make its assembling balling-up.
Fig. 3 is CDs-CoSe prepared by the present embodiment
2composite high-resolution picture, can see that carbon quantum dot is evenly distributed on CoSe
2surface, right side is that carbon quantum dot amplifies picture, shows that carbon quantum dot is successfully incorporated in the composite of preparation; Fig. 4 is CDs-CoSe prepared by the present embodiment
2pure CoSe prepared by composite and embodiment 1
2the XRD collection of illustrative plates of nanobelt, the pure CoSe of curve A
2the XRD collection of illustrative plates of nanobelt, curve B is CDs-CoSe
2the XRD collection of illustrative plates of composite, showing to introduce products therefrom after carbon quantum dot is CoSe
2; The CDs-CoSe of Fig. 5 prepared by the present embodiment
2the STEM-mapping figure of composite, can see that Co, Se and C element are evenly distributed on CDs-CoSe
2on assembling ball, show successfully to have prepared CDs-CoSe
2composite.
The pure CoSe that Fig. 6 is glass-carbon electrode, prepared by 20wt% commercialization platinum carbon, embodiment 1
2nanobelt and the CDs-CoSe prepared by this enforcement
2the electrocatalytic hydrogen evolution catalytic activity test curve figure of composite, wherein curve A is the catalytic activity curve of the electrocatalytic hydrogen evolution of glass-carbon electrode, curve B is the catalytic activity curve of the electrocatalytic hydrogen evolution of 20wt% commercialization platinum carbon, and curve C is pure CoSe prepared by embodiment 1
2the catalytic activity curve of the electrocatalytic hydrogen evolution of nanobelt, the CDs-CoSe of curve D prepared by this enforcement
2the catalytic activity curve of composite; As we can see from the figure, in 0.5M sulfuric acid solution, pure glass-carbon electrode does not almost have electrocatalytic hydrogen evolution active, and the overpotential of 20wt% commercialization platinum carbon is about 0V, pure CoSe
2nanobelt shows higher initial overpotential and is about 95mV, at 10mAcm
-2the overpotential of current density be about 212mV, and the CDs-CoSe prepared by the present embodiment
2the initial overvoltage of composite can be reduced to 37mV, and raises fast along with overvoltage increases current density, namely can reach 10mAcm at overpotential 128mV
-2current density, compare and be better than other transition metal sulfur family catalyst (molybdenum sulfide, cobalt sulfide, cobaltous selenide etc.), show that the introducing of carbon quantum is conducive to the raising of composite electrocatalytic hydrogen evolution catalytic activity;
Fig. 7 is pure CoSe prepared by embodiment 1
2nanobelt and the CDs-CoSe prepared by the embodiment of the present invention 2
2the electrocatalytic hydrogen evolution stability test curve map of composite, in figure, curve A is pure CoSe
2the electrocatalytic hydrogen evolution curve of nanobelt original state, curve B is pure CoSe
2electrocatalytic hydrogen evolution curve after nanobelt circulation 1000 circle, curve C is CDs-CoSe
2the electrocatalytic hydrogen evolution curve of nanobelt original state, curve D is CDs-CoSe
2electrocatalytic hydrogen evolution curve after nanobelt circulation 1000 circle.As can be seen from the figure, after the cyclic voltammetry scan through 1000 circles, pure CoSe
2nanobelt activity significantly reduces, at 10mAcm
-2current density time, the pure CoSe after stability test
2its overpotential raises about 34mV, and CDs-CoSe
2the catalytic activity of assembling ball has almost no change, and shows the introducing induction CoSe of carbon quantum dot
2after assembling balling-up, due to its preferably architectural feature, the chondritic of its three-dimensional of maintenance that can be good in catalytic process, can improve CoSe greatly
2the electrocatalytic hydrogen evolution stability of material.
The CDs-CoSe of Fig. 8 prepared by the present embodiment
2the pure CoSe of composite, commercial oxidation ruthenium and embodiment 1 preparation
2oxygen catalytic activity test curve figure is analysed in the electro-catalysis of nanobelt, and in figure, curve A is the current density voltage curve of commercial oxidation ruthenium, and curve B is CDs-CoSe
2the current density voltage curve of composite, curve C is pure CoSe prepared by embodiment 1
2the current density voltage curve of nanobelt.Can find by figure, the CDs-CoSe prepared by the present embodiment
2the onset potential (about 273mV) of composite is close with commercial oxidation ruthenium (about 250mV), compares pure CoSe
2nanometer with remarkable lifting, and at 10mAcm
-2current density time, CDs-CoSe
2composite and pure CoSe
2nanobelt reduces about 370mV, and higher than other non-precious metal catalysts (manganese oxide, cobalt oxide, cobalt sulfide, cobaltous selenide etc.) reported.
The CDs-CoSe of Fig. 9 prepared by the embodiment of the present invention 1
2oxygen catalytic stability test curve figure is analysed in the electro-catalysis of composite.As can be seen from the figure, under constant overpotential, almost there is not obvious decay in the test after-current density through 10000s, therefore, and CDs-CoSe prepared by same proof example of the present invention
2composite as electro-catalysis oxygen-separating catalyst, there is good stability.
Embodiment 3
The cobalt acetate of 0.5mmol, the sodium selenite of 0.5mmol and 0.1g carbon quantum dot are dissolved in the diethylenetriamine and water mixed solution that volume ratio is 2:1, stir 40 minutes; Said mixture to be transferred in teflon-lined 50mL reactor and to seal, reacting 18 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Products therefrom ethanol purge, and in the vacuum environment of 60 DEG C dry 8 hours, obtain CDs-CoSe
2composite.CDs-CoSe prepared by the present embodiment
2sEM figure and the TEM figure of composite as indicated by 10.
Embodiment 4
The cobalt acetate of 2mmol, the sodium selenite of 2mmol and 0.1g carbon quantum dot are dissolved in the diethylenetriamine and water mixed solution that volume ratio is 2:1, stir 40 minutes; Said mixture to be transferred in teflon-lined 50mL reactor and to seal, reacting 18 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Products therefrom ethanol purge, and in the vacuum environment of 60 DEG C dry 8 hours, obtain CDs-CoSe
2composite.CDs-CoSe prepared by the present embodiment
2assembling ball SEM figure and TEM figure as shown in figure 11.Figure 12 is the CDs-CoSe prepared under different predecessor input amount
2the electrocatalytic hydrogen evolution active testing curve map of assembling ball, in figure, A curve is the CDs-CoSe that 0.05mmol predecessor drops into lower preparation
2the electrocatalytic hydrogen evolution activity curve of assembling ball, curve B is the CDs-CoSe that 2mmol predecessor drops into lower preparation
2the electrocatalytic hydrogen evolution activity curve of assembling ball, curve C is the CDs-CoSe that 1mmol predecessor drops into lower preparation
2the electrocatalytic hydrogen evolution activity curve of assembling ball, as seen from Figure 12, the assembling ball prepared in the input amount of 1mmol has lower take-off potential, shows preferably electrocatalytic hydrogen evolution active.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a preparation method for two cobaltous selenide nanobelt assembling balls, comprises the following steps:
Water, organic amine, cobalt source, selenium source are mixed with carbon quantum dot, then the mixture obtained is reacted, obtain two cobaltous selenide nanobelt assembling balls.
2. preparation method according to claim 1, is characterized in that, described cobalt source is cobalt acetate, described selenium source is sodium selenite.
3. preparation method according to claim 1, is characterized in that, described organic amine is diethylenetriamine, triethylene tetramine or TEPA.
4. preparation method according to claim 1, is characterized in that, described reaction is specially:
The mixture obtained is placed in hydrothermal reaction kettle seal, then at 140 ~ 200 DEG C, reacts 12 ~ 24h.
5. preparation method according to claim 1, is characterized in that, the volume ratio of described water and organic amine is 1:2, and the mol ratio of described cobalt source and selenium source is 1:1.
6. preparation method according to claim 5, it is characterized in that, described cobalt source, described water and the cumulative volume of organic amine and the proportionate relationship of described carbon quantum dot are (0.5 ~ 2) mmol:(35 ~ 40) ml:(0.02 ~ 0.1) g.
7. two cobaltous selenide nanobelt assembling balls prepared by the preparation method described in any one of claim 1 ~ 6.
8. two cobaltous selenide nanobelt assembling balls according to claim 7, is characterized in that, two cobaltous selenide nanobelts of described two cobaltous selenide nanobelt assembling balls are distributed with carbon quantum dot.
9. prepared by the preparation method described in any one of claim 1 ~ 6 or described in any one of claim 7 ~ 8 two application of cobaltous selenide nanobelt assembling ball in catalyst for water electrolysis.
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| CN110853936A (en) * | 2019-11-27 | 2020-02-28 | 长安大学 | Preparation method of electrode material |
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| CN111346651A (en) * | 2020-04-08 | 2020-06-30 | 中国科学技术大学 | Silver selenide-cobalt diselenide composite material with Tuoling structure, and preparation method and application thereof |
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| CN107159294A (en) * | 2017-05-18 | 2017-09-15 | 常州大学 | It is a kind of to prepare the method that carbonitride modifies cobalt-based oxygen-separating catalyst |
| CN110508298A (en) * | 2019-09-04 | 2019-11-29 | 温州涂屋信息科技有限公司 | A kind of AlOOH-CoSe2O compoiste material and its preparation method are analysed in electro-catalysis |
| CN110853936A (en) * | 2019-11-27 | 2020-02-28 | 长安大学 | Preparation method of electrode material |
| CN111229215A (en) * | 2020-03-09 | 2020-06-05 | 华东理工大学 | Metal high-dispersion supported catalyst based on carbon quantum dot induction and preparation method and application thereof |
| CN111346651A (en) * | 2020-04-08 | 2020-06-30 | 中国科学技术大学 | Silver selenide-cobalt diselenide composite material with Tuoling structure, and preparation method and application thereof |
| CN111992229A (en) * | 2020-08-24 | 2020-11-27 | 广西师范大学 | Fe2O3-CoSe2Preparation method of @ Se oxygen evolution electrocatalyst |
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