CN108258218A - A kind of preparation method and application of the titanium carbide hydrogel composite material of carbon dots doping - Google Patents
A kind of preparation method and application of the titanium carbide hydrogel composite material of carbon dots doping Download PDFInfo
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- CN108258218A CN108258218A CN201810036928.3A CN201810036928A CN108258218A CN 108258218 A CN108258218 A CN 108258218A CN 201810036928 A CN201810036928 A CN 201810036928A CN 108258218 A CN108258218 A CN 108258218A
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Abstract
The invention discloses a kind of preparation method and application of the titanium carbide hydrogel composite material of carbon dots doping.To Ti3C2The colloidal solution of Tx MXenes, which adds in nitric acid, makes Ti3C2Tx MXenes surface nitro groups are added in after carbon quantum dot so that carbon quantum dot is fixed to Ti3C2The sheet surfaces of Tx MXenes and piece interlayer, so as to obtain cQDs/Ti3C2Tx persursor materials, to cQDs/Ti3C2The titanium carbide hydrogel composite material that 1 cetyl, 3 methylimidazolium halides prepare three-dimensional conductive hydrogel composite material, as carbon dots doping using hydrothermal synthesis method is added in Tx persursor materials.Conductive capability can not only be carried, and the stacking of lamella can be prevented so as to obtain larger interlamellar spacing, is conducive to improve proton transport ability.
Description
Technical field
The present invention relates to a kind of preparation method and application of the titanium carbide hydrogel composite material of carbon dots doping.
Background technology
Fuel cell is a kind of environmentally friendly power generator, and generating efficiency is higher than other batteries, and equally can be
Chemical energy is converted into electric energy.Direct methanol fuel cell belongs to a kind of pem cell, it does not need to carry out weight first
It is whole but can directly use methanol.At anode, methanol generates H by oxidation2O、CO2And electronics, this and standard proton exchange membrane are electric
Pond is similar, and proton is by film, with O2In cathode reaction, electronics passes through cathode (passing through external circuit), electric discharge from anode.Direct methanol
Fuel cell (DMFC) have many advantages, such as quality it is small, it is easy transport and storage, take up space it is small, burning releasing energy it is more, a
There is bright development prospect in people and social life.But current DMFC also has a various problems, such as DMFC
Performance and making price are also insufficient for current demand.The activity of anode catalyst is too low and methanol infiltration is this
Two problems of maximum.Distinct issues are that anode-catalyzed expression activitiy is low, the reason is that can use a large amount of noble metal,
This makes the making of DMFC and use cost remain high.Therefore, it is necessary to put forward the service efficiency of noble metal-based catalysts, your gold improved
Belong to the catalytic activity of base anode catalyst.
In the past few decades, due to the interesting property of metal nanoparticle (NPs) and it various fields application
Future, such as energy conversion, store, sensing, chemical production and catalysis, metal nanoparticle (NPs) have been widely studied.So
And small metal nanoparticle usually has thermodynamic phase, since its surface can be high, easily assembles larger particle.For
Prevent metal nanoparticle from assembling, a large amount of Job engagement has arrived the size effect for the metal nanoparticle for improving porous supporting body
It answers (such as zeolite, mesoporous aluminoshilicate and other porous, inorganics or organic material), the phase between metal nanoparticle and carrier
In interaction.In this regard, an emerging two-dimentional titanium carbide (MXenes) has attracted more and more concerns.
MXenes is two-dimentional (2D) metal carbides or carbonitride, can be by from ternary transition metal carbide (MAX
Phase) prepared by selective removal atom thin aluminium layer in structure, have proved to be lithium ion battery, sodium-ion battery, sodium ion
The candidate of mixed capacitor and electrode material for super capacitor, volumetric capacitance are more than most of carbon material.In addition, MXenes
One of high-efficient electrode material is had been considered to, because flexible interlayer space and big clearance space can accommodate more high electricity
The ion of lotus/discharge rate is conducive to show good rate and frequency response ability.But the lamellar structure of MXenes exists
Easily being stacked during long-term storage causes interlamellar spacing to become smaller, and causes to reduce proton transport ability.
Invention content
In order to solve the deficiencies in the prior art, an object of the present invention is to provide a kind of titanium carbide water-setting of carbon dots doping
The preparation method of glue composite material, the titanium carbide hydrogel composite material of the carbon dots doping of preparation, can not only carry conductive capability,
And the stacking of lamella can be prevented so as to obtain larger interlamellar spacing, be conducive to improve proton transport ability.
To achieve these goals, the technical scheme is that：
A kind of preparation method of the titanium carbide hydrogel composite material of carbon dots doping, to Ti3C2The colloid of Tx MXenes is molten
Liquid, which adds in nitric acid, makes Ti3C2Tx MXenes surface nitro groups add in carbon quantum dot (cQDs) afterwards so that carbon quantum dot is fixed to
Ti3C2The sheet surfaces of Tx MXenes and piece interlayer, so as to obtain cQDs/Ti3C2Tx persursor materials, to cQDs/Ti3C2Tx
1- cetyl -3- methylimidazolium halides are added in persursor material to answer using hydrothermal synthesis method preparation three-dimensional conductive hydrogel
The titanium carbide hydrogel composite material of condensation material, as carbon dots doping.
The present invention is prepared for having three-dimensional by 1- cetyl -3- methylimidazolium halides for the first time using hydrothermal synthesis method
The titanium carbide hydrogel composite material of structure, the Ti with existing two-dimensional structure3C2Tx is compared, and conductive capability is high, being capable of anti-limited step
The stacking of layer obtains larger interlamellar spacing, is conducive to the raising of proton transport ability.
The titanium carbide hydrogel of carbon dots doping prepared the second object of the present invention is to provide a kind of above-mentioned preparation method is answered
Condensation material.
The third object of the present invention is to provide a kind of catalyst, the titanium carbide hydrogel composite material adulterated with above-mentioned carbon dots
As carrier-supported precious metal nano-particle (MNPs).The noble metal nano particles (MNPs) are Pd nano particle, platinum nanometer
One or more of particle, ruthenium nano particle etc..
The titanium carbide hydrogel composite material of carbon dots prepared by present invention doping can coating noble metal nano particles, obtain
Conductive MXenes hydrogel composite materials catalyst maintain the pattern of network-like gel, and noble metal nano grain well
Sub (MNPs) is equably wrapped up in MXenes layers, and excellent property is demonstrated by the reaction of catalysis methanol oxidation.
The fourth object of the present invention is to provide a kind of preparation method of above-mentioned catalyst, the titanium carbide that above-mentioned carbon dots are adulterated
Hydrogel composite material is scattered in salting liquid, and MNPs/ will be obtained after the precious metal ion reduction in salting liquid by adding in reducing agent
cQDs/Ti3C2Tx, as catalyst, wherein, one or more of palladium, platinum, ruthenium are contained in the salting liquid.
The fifth object of the present invention is to provide a kind of application of above-mentioned catalyst in methanol catalytic oxidation.
Beneficial effects of the present invention are：
1. the present invention is prepared for having three by 1- cetyl -3- methylimidazolium halides for the first time using hydrothermal synthesis method
Tie up the titanium carbide hydrogel composite material of structure, the Ti with existing two-dimensional structure3C2Tx is compared, and conductive capability is high, can prevent
The stacking of lamella obtains larger interlamellar spacing, is conducive to the raising of proton transport ability.
2. the titanium carbide hydrogel composite material of carbon dots prepared by present invention doping can coating noble metal nano particles, obtain
To conductive MXenes hydrogel composite materials catalyst maintain the pattern of network-like gel, and noble metal nano well
Particle is equably wrapped up in MXenes layers, and excellent property is demonstrated by the reaction of catalysis methanol oxidation.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is the flow chart of catalyst prepared by embodiment 1；
Fig. 2 is the TEM image of the MXenes being layered completely prepared by embodiment 1；
Fig. 3 is the cyclic voltammetry curve of catalyst prepared by embodiment 1；
Fig. 4 is the when m- testing current curve of catalyst prepared by embodiment 1；
Fig. 5 is the adsorption desorption curve of the hydrogen of catalyst prepared by embodiment 1.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Hydrothermal synthesis method described herein refers in the pressure vessel of sealing, using water as solvent, in high temperature height
The chemical reaction carried out under conditions of pressure.High temperature in hydrothermal synthesis refers to that temperature is 100~1000 DEG C, and high pressure is that finger pressure is
1MPa~1GPa.
Noble metal described herein is palladium, platinum, ruthenium.
As background technology is introduced, the lamellar structure of MXenes exists in the prior art during long-term storage
Easily stacking, which causes interlamellar spacing to become smaller, leads to the deficiency for reducing proton transport ability, the technical issues of in order to solve as above, this Shen
It please propose a kind of the titanium carbide hydrogel composite material and preparation method and application of carbon dots doping.
A kind of exemplary embodiment of the application provides a kind of system of the titanium carbide hydrogel composite material of carbon dots doping
Preparation Method, to Ti3C2The colloidal solution of Tx MXenes, which adds in nitric acid, makes Ti3C2Tx MXenes surface nitro groups add in carbon quantum
So that carbon quantum dot is fixed to Ti after point3C2The sheet surfaces of Tx MXenes and piece interlayer, so as to obtain cQDs/Ti3C2Before Tx
Body material is driven, to cQDs/Ti3C21- cetyl -3- methylimidazolium halides are added in Tx persursor materials and use hydrothermal synthesis
Method prepares the titanium carbide hydrogel composite material of three-dimensional conductive hydrogel composite material, as carbon dots doping.
The application is prepared for having three-dimensional by 1- cetyl -3- methylimidazolium halides for the first time using hydrothermal synthesis method
The titanium carbide hydrogel composite material of structure, the Ti with existing two-dimensional structure3C2Tx is compared, and conductive capability is high, being capable of anti-limited step
The stacking of layer obtains larger interlamellar spacing, is conducive to the raising of proton transport ability.
In order to improve the performance of the titanium carbide hydrogel composite material of carbon dots doping, it is preferred that the Ti3C2Tx MXenes
The preparation method of colloidal solution be that Ti is fallen using hf etching3AlC2In aluminium, be then heated to certain temperature and carry out
Stirring, adds in water and washs, and Ti is obtained after being then ultrasonically treated3C2Tx MXenes。
It is further preferred that the Ti3C2The specific preparation method of the colloidal solution of Tx MXenes is, by 4~10
Ti is etched in DEG C hydrofluoric acid3AlC2Then 10~15min of aluminium layer in MAX phases is stirred 22~26 hours at 40~50 DEG C and is synthesized
Ti3C2, then by gained Ti3C2It is washed with distilled water, 150~200mL water is added to be ultrasonically treated 10~15 hours and obtains what is be layered completely
Composite material hydrosol Ti3C2Tx MXenes.This method treated Ti3AlC2It is thinner, so as to further promote the property of material
Energy.
Preferably, the reaction temperature of the hydrothermal synthesis method is 190~210 DEG C, and the reaction time is 22~26h.The condition
Under can promote 1- cetyl -3- methylimidazolium halides and Ti3C2The activation energy of surface termination group Tx reactions in Tx,
So as to form cQDs/Ti3C2Tx hydrogels.
The another embodiment of the application provides the titanium carbide water of carbon dots doping prepared by a kind of above-mentioned preparation method
Gel complex material.
The third of the application is embodiment there is provided a kind of catalyst, the titanium carbide hydrogel adulterated with above-mentioned carbon dots
Composite material is as carrier-supported precious metal nano-particle (MNPs).The noble metal nano particles (MNPs) are palladium nanoparticle
One or more of son, nano platinum particle, ruthenium nano particle etc..
The application prepare carbon dots doping titanium carbide hydrogel composite material can coating noble metal nano particles, obtain
Conductive MXenes hydrogel composite materials catalyst maintain the pattern of network-like gel, and noble metal nano grain well
Son is equably wrapped up in MXenes layers, and excellent property is demonstrated by the reaction of catalysis methanol oxidation.
The 4th kind of the application adulterates above-mentioned carbon dots embodiment there is provided a kind of preparation method of above-mentioned catalyst
Titanium carbide hydrogel composite material be scattered in salting liquid, add in reducing agent by salting liquid precious metal ion reduction after obtain
Obtain MNPs/cQDs/Ti3C2Tx, as catalyst, wherein, one or more of palladium, platinum, ruthenium are contained in the salting liquid.
Preferably, it adds in before reducing agent, by the salting liquid after the titanium carbide hydrogel composite material for adding in carbon dots doping
PH adjust to 7.0~8.0.
Preferably, when reducing agent uses trisodium citrate, the temperature of reduction reaction is 110 ± 5 DEG C；Reducing agent uses NaBH
When, reaction temperature is room temperature.Room temperature described herein is 15~25 DEG C.
Preferably, when salting liquid is the ethylene glycol solution of chloroplatinic acid, reducing agent is trisodium citrate, the temperature of reduction reaction
It is 110 ± 5 DEG C.Reaction time is 3~4h.
Preferably, when salting liquid is chlorine palladium acid sodium aqueous solution or the mixed aqueous solution of chloroplatinic acid and ruthenic chloride, reducing agent is
During NaBH, reaction temperature is room temperature.Reaction time is 30~40min.
A kind of the 5th kind of application embodiment there is provided above-mentioned catalyst in methanol catalytic oxidation of the application.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail with comparative example for the embodiment of body.
The reagent used in embodiment has：Titanium aluminum carbide (Ti3AlC2), hydrofluoric acid (HF), chloroplatinic acid (H2PtCI6·
6H2O), chlorine palladium acid sodium (Na2PdCl4), ruthenic chloride (RuCl3·3H2O), sodium hydroxide (NaOH), absolute ethyl alcohol, ethylene glycol, quotient
Product catalyst Pt/C (mass fraction 20%, Johnson Matthey companies) is as cathod catalyst, 1- cetyl -3- first
Base imidazolium halides, solid polymer electrolyte membrane are Nafion membrane.
Embodiment 1
Ti3C2The preparation of the TxMXenes hydrosols
Pass through the selective etch 1g Ti in 4 DEG C of hydrofluoric acid of 10mL (AR (Shanghai examination), >=40.0%)3AlC2(Changchun you
Good micro-nano science and technology limited Company) MAX phases Ti3AlC2In aluminium layer 15min, 24 hours are then stirred at 45 DEG C to synthesize
Ti3C2.Then the suspension of resulting materials is washed with distilled water, 3500rpm is centrifuged 5 minutes and washed, and pours out after supernatant 35 DEG C
After being dried in vacuo 18h, 0.3g solid materials is taken to be dispersed in 150mL distilled water ultrasound and obtain within 10 hours layering completely (in such as Fig. 2
Shown in the TEM image of MXenes) composite material hydrosol Ti3C2Tx MXenes。
cQDs/Ti3C2The preparation of Tx hydrosol composite materials
The Ti that will be prepared3C2The colloidal solution of Tx MXenes and the 1mol of 10mL-1Nitric acid mixing ultrasound carries out for 5 hours
Surface nitro groupsization processing.By the Ti of nitration3C2The colloidal solution of Tx MXenes and carbon quantum dot (cQDs, using known ultrasound
Method prepares cQDs：Charcoal particle about 0.29g is taken, adds in 5mol-1Salpeter solution 50mL, be placed in Ultrasound Instrument ultrasonic (power
250w, frequency 50kHz) 24 hours obtain) mixing is ultrasonically treated and formed within 24 hours after covalent bond so that cQDs is fixed to Ti3C2Tx
The sheet surfaces of MXenes and piece interlayer adjust pH using sodium hydroxide, and 12000rpm is centrifuged 5 minutes after modulation is neutral, distillation
Water washing, 35 DEG C of vacuum drying obtain cQDs/Ti3C2Tx hydrosol composite materials.
cQDs/Ti3C2The preparation of Tx hydrogel composite materials
The cQDs/Ti that 0.1g is taken to synthesize3C2Tx persursor materials, 0.25g 1- cetyl -3- methylimidazolium halides point
It is scattered in 15mL distilled water, three-dimensional (3D) conductive hydrogel composite material cQDs/Ti is prepared by hydro-thermal method3C2Tx.At 200 DEG C
Reaction kettle in react 25 hours, high temperature, which provides, makes 1- cetyl -3- methylimidazolium halides and Ti3C2Surface in Tx
The activation energy of group Tx reactions is terminated, so as to form cQDs/Ti3C2Tx hydrogels.
The preparation of catalyst
Pt NPs/cQDs/Ti3C2The preparation of Tx hydrogel composite materials
By 1g cQDs/Ti3C2Tx sample ultrasonics are scattered in the ethylene glycol solution of the chloroplatinic acid of 1mL 0.0242M, are added
PH to 7.0 is adjusted with sodium hydroxide solution after 198mL distilled water, adds in the citric acid three sodium solution that 7mL mass fractions are 1%,
110 DEG C are flowed back three hours, and the MXenes hydrogel composite woods that noble metal nano particles have been loaded in layer are made after cooling washing
Expect Pt NPs/cQDs/Ti3C2Tx.Its complete preparation flow is as shown in Figure 1.
Electrochemical Characterization
Catalyst chemical property characterization mainly it is carried out by electrochemical workstation cyclic voltammetry (CV) and when
M- current curve tests (I-T).
Glass-carbon electrode (diameter 3mm) is handled by following steps before test：First polished with 0.3 μm of alumina powder
Polishing, obtains the surface of mirror-smooth, is then blown successively with absolute ethyl alcohol and deionized water supersound washing with stream of nitrogen gas later
It is dry spare.Then preparation work electrode：By the catalyst material Pt NPs/cQDs/Ti of the above-mentioned synthesis of 1mg3C2Tx, hydrogel are multiple
Condensation material is scattered in respectively in 2mL water, material is made to be uniformly dispersed by ultrasound, and 6 μ L is respectively taken to drop in dry glassy carbon electrode surface,
It is placed to dry at room temperature, then Nafion aqueous solutions that 6 μ L mass fractions are 0.5% is added dropwise in electrode surface, put at room temperature
Put dry it is to be measured.It with electrochemical workstation (CHI 660e) for test equipment, is tested using three-electrode system, work electricity
The glass-carbon electrode of catalyst material is extremely coated with, is platinum electrode to electrode, reference electrode is saturated calomel electrode (SCE), electric
Catalysis test is in the CH of the NaOH and 0.5M of 0.5M3It is carried out in the mixed aqueous solution of OH, solution is first led into nitrogen before test
Except oxygen.
As shown in figs. 34, Fig. 3 is Pt NPs restored in the same manner to its result, the two dimension for having loaded Pt NPs
MXenes composite material Pt NPs/Ti3C2With loaded Pt NPs' in the MXenes hydrogel composite material layers that are adulterated in carbon dots
Pt NPs/cQDs/Ti3C2Tri- kinds of catalyst of Tx are in 0.5M NaOH+0.5M CH3Cyclic voltammetry curve in OH solution.Three in figure
Kind catalyst is respectively 173.5mA mg to the current density of methanol catalytic oxidation-1 Pt、368.9mAmg-1 Pt、697.8mAmg-1 Pt。
Pt NPs/cQDs/Ti3C2Tx is to the catalysis oxidation current density of methanol compared with Pt NPs/Ti3C2It is improved with Pt NPs.This knot
Fruit is consistent with this higher trend of the bigger catalyst activity of porosity.
Fig. 4 is three parts of catalyst in 0.5M NaOH+0.5M CH3When m- testing current curve in OH solution, this is bent
Line intuitively illustrates, in three kinds of different catalyst samples, Pt NPs/cQDs/Ti3C2Tx catalyst remains maximum
Current density illustrates catalyst Pt NPs/cQDs/Ti3C2Tx has good Activity and stabill, which possesses most preferably
Performance.
Fig. 5 is cyclic voltammetry curve of three parts of catalyst in 0.5M NaOH solutions, this curve is intuitively said
It is bright, in three kinds of different catalyst samples, Pt NPs/cQDs/Ti3C2There is Tx catalyst maximum electro-chemical activity to compare table
Area illustrates catalyst Pt NPs/cQDs/Ti3C2Tx has good activity, it can be found that cQDs/Ti3C2Tx hydrogels are answered
Condensation material can actually improve proton transport ability, be conducive to Pt bases catalyst and play best performance.
Embodiment 2
Preparation method is same as Example 1, the difference lies in：
Pd NPs/cQDs/Ti3C2The preparation of Tx hydrogel composite materials
By 1g cQDs/Ti3C2Tx sample ultrasonics are scattered in the chlorine palladium acid sodium aqueous solution of 5mL 0.0001M, sodium hydroxide
The pH value of mixture is adjusted to 7.00, the NaBH reducing agents that 2mL mass fractions are 1% is added in, stirs setting time 30min, wash
The MXenes composite material Pd NPs/cQDs/Ti that noble metal nano particles have been loaded in layer are made after washing3C2Tx。
Embodiment 3
Preparation method is same as Example 1, the difference lies in：
PtRu NPs/cQDs/Ti3C2The preparation of Tx hydrogel composite materials
By 1g cQDs/Ti3C2Tx sample ultrasonics are scattered in the chloroplatinic acid of 5mL 0.0001M and the mixed aqueous solution of ruthenic chloride
In, sodium hydroxide adjusts the pH value of mixture to 7.0, the NaBH reducing agents that 2mL mass fractions are 1% is added in, when stirring is set
Between 40min, the MXenes hydrogel composite woods that noble metal nano particles PtNP and Ru NPs have been loaded in layer are made after washing
Expect PtRu NPs/cQDs/Ti3C2Tx。
The characterization result of embodiment 2~3 is same as Example 1.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of preparation method of the titanium carbide hydrogel composite material of carbon dots doping, it is characterized in that, to Ti3C2Tx MXenes'
Colloidal solution, which adds in nitric acid, makes Ti3C2Tx MXenes surface nitro groups are added in after carbon quantum dot so that carbon quantum dot is fixed to
Ti3C2The sheet surfaces of Tx MXenes and piece interlayer, so as to obtain cQDs/Ti3C2Tx persursor materials, to cQDs/Ti3C2Tx
1- cetyl -3- methylimidazolium halides are added in persursor material to answer using hydrothermal synthesis method preparation three-dimensional conductive hydrogel
The titanium carbide hydrogel composite material of condensation material, as carbon dots doping.
2. preparation method as described in claim 1, it is characterized in that, the Ti3C2The preparation side of the colloidal solution of Tx MXenes
Method is to fall Ti using hf etching3AlC2In aluminium, be then heated to certain temperature and be stirred, add in water and wash
It washs, Ti is obtained after being then ultrasonically treated3C2Tx MXenes。
3. preparation method as claimed in claim 2, it is characterized in that, the Ti3C2The specific system of the colloidal solution of Tx MXenes
Preparation Method is, by etching Ti in 4~10 DEG C of hydrofluoric acid3AlC210~15min of aluminium layer in MAX phases, then at 40~50 DEG C
22~26 hours synthesis Ti of lower stirring3C2, then by gained Ti3C2It is washed with distilled water, is ultrasonically treated 15~20 hours and obtains completely
The composite material hydrosol Ti of layering3C2Tx MXenes。
4. preparation method as described in claim 1, it is characterized in that, the reaction temperature of the hydrothermal synthesis method is 190~210
DEG C, the reaction time is 22~26h.
5. the titanium carbide hydrogel composite material of carbon dots doping prepared by a kind of any preparation method of Claims 1 to 4.
6. a kind of catalyst, it is characterized in that, using the titanium carbide hydrogel composite material of the carbon dots doping described in claim 5 as
Carrier-supported precious metal nano-particle.
7. a kind of preparation method of the catalyst described in claim 6, it is characterized in that, the carbon dots described in claim 5 are adulterated
Titanium carbide hydrogel composite material be scattered in salting liquid, add in reducing agent by salting liquid precious metal ion reduction after obtain
Obtain cQDs/Ti3C2Tx/M nano-particles, as catalyst, wherein, one kind in palladium, platinum, ruthenium or several is contained in the salting liquid
Kind.
8. preparation method as claimed in claim 7, it is characterized in that, it adds in before reducing agent, the carbonization of carbon dots doping will be added in
The pH of salting liquid after titanium hydrogel composite material is adjusted to 7.0~8.0.
9. preparation method as claimed in claim 7, it is characterized in that, when reducing agent uses trisodium citrate, the temperature of reduction reaction
Spend is 110 ± 5 DEG C；When reducing agent uses NaBH, reaction temperature is room temperature；
Or, during ethylene glycol solution of the salting liquid for chloroplatinic acid, reducing agent is trisodium citrate, and the temperature of reduction reaction is 110 ± 5
℃；
Or, salting liquid be chlorine palladium acid sodium aqueous solution or the mixed aqueous solution of chloroplatinic acid and ruthenic chloride when, reducing agent be NaBH when, instead
It is room temperature to answer temperature.Reaction time is 30~40min.
10. a kind of application of the catalyst described in claim 5 in methanol catalytic oxidation.
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Cited By (10)
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| CN109557159A (en) * | 2018-12-24 | 2019-04-02 | 青岛大学 | A kind of titanium carbide three-dimensional composite material and preparation method thereof and the application in building thrombin aptamers sensor |
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| WO2022227681A1 (en) * | 2021-04-28 | 2022-11-03 | Tcl科技集团股份有限公司 | Composite material and preparation method therefor, and quantum dot light-emitting diode and preparation method therefor |
| US20220395822A1 (en) * | 2021-06-15 | 2022-12-15 | Research & Business Foundation Sungkyunkwan University | Mxene nanodot core-carbon shell multifunctional catalyst and method of preparing the same |
| CN113991109A (en) * | 2021-09-04 | 2022-01-28 | 桂林理工大学 | Sodium manganese fluorophosphate/titanium carbide sheet-carbon quantum dot composite material and preparation method and application thereof |
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| CN114420463A (en) * | 2022-01-25 | 2022-04-29 | 山西大学 | Preparation method of asymmetric all-solid-state flexible supercapacitor |
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