CN115466898A - Preparation method of graphene oxide intercalated two-dimensional high-entropy alloy - Google Patents
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Abstract
The invention provides a preparation method of a graphene oxide intercalated two-dimensional high-entropy alloy, which comprises the following steps: mixing the graphene with functionalized surface with a solvent to form a graphene solution; and mixing the metal salt solution with the graphene solution, heating and refluxing, centrifuging, drying, and calcining in air to obtain the graphene oxide intercalated two-dimensional high-entropy alloy. According to the invention, glucose with polyhydroxy is adopted to carry out surface modification on graphene, the graphene with polyhydroxy on the two-dimensional surface is used as a lamellar structure inducer, metal salt is uniformly and densely dispersed on the surface of the graphene through coordination and electrostatic attraction, and the graphene intercalation two-dimensional lamellar high-entropy alloy material is prepared by a one-step roasting method. Compared with the traditional high-entropy alloy preparation method, the grinding process is avoided, and meanwhile, the obtained material is a lamellar material, has a pore channel structure, is relatively high in specific surface area, and has an obvious cocktail effect. The application potential of the high-entropy alloy in the fields of catalysis, sensing and the like is improved.
Description
Technical Field
The invention relates to the technical field of material preparation, in particular to a preparation method and application of a graphene oxide intercalated two-dimensional high-entropy alloy.
Background
The high-entropy alloy is a novel metal material appearing in recent decades, generally comprises 5 or more than 5 elements in equal atomic ratio or near equal atomic ratio, and shows high strength, high toughness, high hardness and exceptionally excellent low-temperature toughness due to multiple effects such as high mixed entropy, slow atomic diffusion and a 'cocktail' effect, and is mainly used for preparing devices and special mechanical materials under extreme conditions. In recent years, the internal multi-electron effect and the redox behavior of the catalyst are found to be applicable to the fields of electrocatalysis and thermocatalysis.
At present, the preparation of the high-entropy alloy generally comprises the steps of roasting metal powder at high temperature to obtain solid solution, then carrying out ball milling to obtain powder, and the process has high energy consumption and large equipment loss.
Qiao et al prepare two-dimensional high-entropy alloy Co by roasting through electrostatic interaction between graphene and metal salts in 2020 0.2 Ni 0.2 Cu 0.2 Mg 0.2 Zn 0.2 O, but the graphene surface functional group of the method is less, and the interaction with metal is weaker.
Disclosure of Invention
In view of the problems in the prior art, the present invention aims to provide a method for preparing a graphene oxide intercalated two-dimensional high-entropy alloy. By adopting the preparation method provided by the invention, a complicated grinding process can be avoided, and the obtained high-entropy alloy material is a two-dimensional lamellar material, has a pore channel structure, is relatively high in specific surface area, and has an obvious cocktail effect. The application potential of the high-entropy alloy in the fields of catalysis, sensing and the like is improved.
The invention provides a preparation method of a graphene oxide intercalated two-dimensional high-entropy alloy, which comprises the following steps:
s1, mixing surface functionalized graphene with a solvent to form a graphene solution;
s2, respectively adding a Ti metal salt solution, a Mn metal salt solution, a Ce metal salt solution, a Ni metal salt solution and a W metal salt solution into the graphene solution obtained in the S1 to form a uniform turbid solution;
s3, mixing the turbid liquid obtained in the S2 with the graphene solution obtained in the S1, heating and refluxing, centrifuging, and drying to obtain a solid 1;
and S4, calcining the solid 1 obtained in the step S3 in the air to obtain the graphene oxide intercalated two-dimensional high-entropy alloy.
According to some preferred embodiments of the preparation method of the present invention, in S1, the thickness of the surface-functionalized graphene is 0.5 to 2nm; and/or the surface functionalized graphene surface contains at least one of hydroxyl and carboxyl functional groups.
According to some preferred embodiments of the preparation method of the present invention, in S1, the surface functionalized graphene is prepared according to the following method: adding polyhydroxy sugar into water dissolved with graphene, heating and stirring for a period of time, and centrifuging to obtain surface functionalized graphene; preferably, the mass fraction of the polyhydroxy saccharide solution is 5 to 15%.
According to some preferred embodiments of the preparation method of the present invention, in S1, the reaction conditions include: heating at 60-90 deg.c; and/or stirring for 2-4 h.
According to some preferred embodiments of the preparation method of the present invention, in S1, the solvent is at least one selected from the group consisting of water, ethanol, ethylene glycol and glycerol.
According to some preferred embodiments of the preparation method of the present invention, in S2, ti is contained in the added Ti metal salt solution, mn metal salt solution, ce metal salt solution, ni metal salt solution, and w metal salt solution 4+ 、Mn 2+ 、Ce 3+ 、Ni 2+ And W 6+ With the same molar amount.
According to some preferred embodiments of the production method of the present invention, the metal salt of Ti is selected from at least one of isopropyl titanate and n-butyl titanate.
According to some preferred embodiments of the preparation method of the present invention, the metal salt of Mn is selected from at least one of manganese nitrate, manganese acetate, and manganese chloride.
According to some preferred embodiments of the preparation method of the present invention, the metal salt of Ce is at least one selected from cerium nitrate, cerium chloride and cerium acetate.
According to some preferred embodiments of the production method of the present invention, the metal salt of Ni is selected from at least one of nickel chloride, nickel acetate, and nickel nitrate.
According to some preferred embodiments of the preparation method of the present invention, the metal salt of W is selected from at least one of tungsten hexachloride, ammonium metatungstate.
According to some preferred embodiments of the preparation method of the present invention, in S3, the reaction conditions include: the heating reflux temperature is 80-140 ℃; and/or the heating reflux time is 4-10 h.
According to some preferred embodiments of the preparation method of the present invention, in S4, the reaction conditions include: the calcining temperature is 800-1000 ℃.
The second aspect of the invention provides an application of the graphene oxide intercalated two-dimensional high-entropy alloy prepared by the preparation method in the field of denitration.
The invention has the beneficial effects that:
according to the invention, glucose with polyhydroxy is adopted to carry out surface modification on graphene, so that a large number of hydroxyls are covered on the surface of the graphene, then the graphene with polyhydroxy on the two-dimensional surface is used as a lamellar structure inducer, metal salt is uniformly and densely dispersed on the surface of the graphene through coordination and electrostatic attraction, and the graphene intercalation two-dimensional lamellar high-entropy alloy material is prepared through a one-step roasting method. Compared with the traditional high-entropy alloy preparation method, the graphene induction method can avoid the grinding process, and meanwhile, the obtained material is a sheet material, has a pore structure, is relatively high in specific surface area, and has an obvious cocktail effect. The application potential of the high-entropy alloy in the fields of catalysis, sensing and the like is improved.
Drawings
Fig. 1 (a) is an XRD spectrum of the graphene-intercalated high-entropy alloy prepared in example 1;
FIG. 1 (b) shows N of the graphene intercalated high-entropy alloy prepared in example 1 2 Adsorption desorption isotherms.
Detailed Description
The present invention will be described in detail below with reference to examples, but the scope of the present invention is not limited to the following description.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available from commercial sources.
In the following examples, unless otherwise specified, the preparation method of the graphene oxide intercalated two-dimensional high-entropy alloy includes:
1. adding polyhydroxy sugar into water dissolved with graphene, heating and stirring for a period of time, and centrifuging to obtain surface functionalized graphene; the heating temperature is 60-90 ℃, and the stirring time is 2-4 h.
2. Mixing the surface functionalized graphene with a solvent to form a graphene solution.
3. Respectively adding a Ti metal salt solution, a Mn metal salt solution, a Ce metal salt solution, a Ni metal salt solution and a W metal salt solution into the graphene solution obtained in the step (2) to form turbid solutions;
4. mixing the turbid solution obtained in the step (3) and the graphene solution obtained in the step (2), heating and refluxing, centrifuging, and drying to obtain a solid 1; the heating reflux temperature is 80-120 ℃, and the heating reflux time is 4-10 h.
5. And (5) calcining the solid 1 obtained in the step (4) in the air to obtain the graphene oxide intercalated two-dimensional high-entropy alloy.
[ example 1 ]
1. Adding 1.0g of graphene oxide into 200mL of glucose solution (5 wt%), stirring for 3h at 80 ℃, cooling, and centrifuging to obtain the surface hydroxyl modified graphene.
2. Ultrasonically dispersing 0.5g of surface modified graphene powder in 200mL of mixed solvent of water and ethylene glycol to form graphene solution; wherein the volume ratio of water to glycol is 1: 9.
3. Adding 0.170g of n-butyl titanate, 0.0865g of manganese acetate, 0.158g of cerium acetate, 0.088g of nickel acetate and 0.198g of tungsten hexachloride into 500mL of ethylene glycol, and uniformly stirring to form a turbid liquid;
4. and (3) slowly dropwise adding the solution obtained in the step (3) into the graphene solution obtained in the step (2), heating to 100 ℃, and carrying out reflux reaction for 4 hours. Centrifuging to obtain solid 1, and vacuum drying at 60-80 deg.C.
5. And (4) calcining the solid 1 obtained in the step (4) for 1h at 900 ℃ in the air to obtain the graphene intercalation two-dimensional high-entropy alloy.
Fig. 1 (a) is an XRD spectrum of the two-dimensional high-entropy alloy obtained by preparation, and it can be seen that characteristic diffraction peaks appear at 2 θ =38.6, 44.9, 65.3, 78.2, and the alloy is classified as a multiphase crystal, which proves that the metal at the synthesis point is a high-entropy alloy material.
FIG. 1 (b) shows N of the prepared graphene intercalated two-dimensional high-entropy alloy 2 Adsorption-desorption isotherms, which shows that the prepared alloy has a pore structure and the specific surface area of the sample is 39.3m2/g.
[ example 2 ] A method for producing a polycarbonate
1. Adding 1.0g of graphene oxide into 200mL of fructose solution (5 wt%), stirring for 3h at 80 ℃, cooling, and centrifuging to obtain the surface hydroxyl modified graphene.
2. Ultrasonically dispersing 0.5g of surface modified graphene powder in 200mL of mixed solvent of water and glycerol to form graphene solution; wherein the volume ratio of water to glycerol is 1: 9.
3. Adding 0.170g of n-butyl titanate, 0.0865g of manganese acetate, 0.158g of cerium acetate, 0.088g of nickel acetate and 0.198g of tungsten hexachloride into 500mL of ethylene glycol, and uniformly stirring to form a turbid liquid;
4. slowly dropwise adding the turbid solution obtained in the step 3 into the graphene solution obtained in the step 2, heating to 100 ℃, and carrying out reflux reaction for 4 hours. Centrifuging to obtain solid 1, and vacuum drying at 60-80 deg.C.
5. And (4) calcining the solid 1 obtained in the step (4) for 1h at 900 ℃ in the air to obtain the graphene intercalation two-dimensional high-entropy alloy.
[ example 3 ]
1. Adding 1.0g of graphene oxide into 200mL of chitosan solution (5 wt%), stirring for 3h at 80 ℃, cooling, and centrifuging to obtain the surface hydroxyl modified graphene.
2. Ultrasonically dispersing 0.5g of surface modified graphene powder in 200mL of mixed solvent of ethylene glycol and glycerol to form graphene solution; wherein the volume ratio of the glycol to the glycerol is 1: 4.
3. Adding 0.170g of n-butyl titanate, 0.0865g of manganese acetate, 0.158g of cerium acetate, 0.088g of nickel acetate and 0.198g of tungsten hexachloride into 500mL of ethylene glycol, and uniformly stirring to form turbid liquid;
4. and (4) slowly dropwise adding the turbid solution obtained in the step (3) into the graphene solution obtained in the step (2), heating to 100 ℃, and carrying out reflux reaction for 4 hours. Centrifuging to obtain solid 1, and vacuum drying at 60-80 deg.C.
5. And (5) calcining the solid 1 obtained in the step (4) for 1h at 900 ℃ in the air to obtain the two-dimensional high-entropy alloy.
[ example 4 ]
1. Adding 1.0g of graphene oxide into 200mL of glucose solution (5 wt%), stirring for 3h at 80 ℃, cooling, and centrifuging to obtain the surface hydroxyl modified graphene.
2. Ultrasonically dispersing 0.5g of surface modified graphene powder in 200mL of mixed solvent of ethylene glycol and glycerol to form graphene solution; wherein the volume ratio of water to glycerol is 1: 4.
3. Adding 0.170g of n-butyl titanate, 0.063g of manganese chloride, 0.158g of cerium acetate, 0.067g of nickel chloride and 0.198g of tungsten hexachloride into 500mL of ethylene glycol, and uniformly stirring to form turbid liquid;
4. slowly dropwise adding the turbid solution obtained in the step 3 into the graphene solution obtained in the step 2, heating to 100 ℃, and carrying out reflux reaction for 4 hours. Centrifuging to obtain solid 1, and vacuum drying at 60-80 deg.C.
5. And (3) calcining the solid 1 obtained in the step (4) for 1h at 900 ℃ in the air to obtain the two-dimensional high-entropy alloy.
[ example 5 ] A method for producing a polycarbonate
Example 5 is essentially the same as example 1 except that the heating reflux temperature in step 4 is 120 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 6 ] A method for producing a polycarbonate
Example 6 is essentially the same as example 1 except that the heating reflux temperature in step 4 is 140 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 7 ]
Example 7 is substantially the same as example 1 except that the calcination temperature in step 5 is 1000 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 8 ]
Example 8 is essentially the same as example 1 except that the calcination temperature in step 5 is 800 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 9 ]
Example 9 is essentially the same as example 1 except that the heating reflux temperature in step 4 is 80 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 10 ] A method for producing a polycarbonate
Example 10 is essentially the same as example 1 except that the heating reflux temperature in step 4 is 60 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 11 ] A method for producing a polycarbonate
Example 11 is substantially the same as example 8 except that the calcination temperature in step 5 is 700 ℃. Finally obtaining the two-dimensional high-entropy alloy.
[ example 12 ]
Example 12 is essentially the same as example 8 except that the calcination temperature in step 5 is 600 ℃. Finally obtaining the two-dimensional high-entropy alloy.
Comparative example 1
Comparative example 5 is substantially the same as example 4 except that surface-unmodified graphene oxide was used. Finally, the two-dimensional high-entropy alloy with the block structure is prepared.
The two-dimensional high-entropy alloy prepared in the examples 1 to 8 and the comparative examples 1 to 5 is used in SCR denitration reaction, and the specific steps are as follows:
at a temperature of 300 ℃, the inlet NO concentration is 2000mg/Nm 3 Under the conditions of (1) catalyst Ti 0.2 Mn 0.2 Ce 0.2 Ni 0.2 W 0.2 The O filling volume is 10mL, the test temperature is 300-350 ℃, and the test space velocity is 20000h -1 The system pressure is 0.10Mpa.
TABLE 1 preparation parameters and denitration performance tables of high-entropy alloys of different examples
As can be seen from table 1, the high-entropy alloys prepared in examples 1 to 3 by using different saccharides all have better denitration activity, which indicates that the saccharides having multiple hydroxyl groups can effectively improve the anchoring effect of graphene on metal salts. As can be seen from the denitration performance of the samples of examples 9 and 10, the heating reflux temperature of the metal salt solution is lower than 80 ℃, which results in the reduction of the denitration performance of the prepared high-entropy alloy. It can be seen from the denitration performance of the samples in examples 11 and 12 that the denitration activity of the high-entropy alloy is also reduced when the roasting temperature is lower than 800 ℃. Compared with the use of graphene oxide with an unmodified surface, the denitration performance of the high-entropy alloy prepared from the common graphene is obviously reduced, which shows that the surface-modified graphene can effectively promote the formation of a two-dimensional high-entropy alloy, and indirectly proves that the carbohydrate with polyhydroxy can effectively improve the anchoring effect of the graphene on metal salts.
It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not constitute any limitation to the present invention. The present invention has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. The invention can be modified, as prescribed, within the scope of the claims and without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.
Claims (10)
1. A preparation method of a graphene oxide intercalated two-dimensional high-entropy alloy comprises the following steps:
s1, mixing surface functionalized graphene with a solvent to form a graphene solution;
s2, respectively adding a Ti metal salt solution, a Mn metal salt solution, a Ce metal salt solution, a Ni metal salt solution and a W metal salt solution into the graphene solution obtained in the S1 to form turbid solutions;
s3, mixing the turbid liquid obtained in the S2 with the graphene solution obtained in the S1, heating and refluxing, centrifuging, and drying to obtain a solid 1;
and S4, calcining the solid 1 obtained in the step S3 in the air to obtain the graphene oxide intercalated two-dimensional high-entropy alloy.
2. The method according to claim 1, wherein in S1, the thickness of the surface-functionalized graphene is 0.5 to 2nm; and/or the surface functionalized graphene surface contains at least one of hydroxyl and carboxyl functional groups.
3. The method according to claim 2, wherein in S1, the surface-functionalized graphene is prepared as follows: adding polyhydroxy sugar into water dissolved with graphene, heating, stirring, and centrifuging to obtain surface functionalized graphene; preferably, the mass fraction of the polyhydroxylated saccharide solution is 5 to 15wt%.
4. The method according to claim 3, wherein in S1, the reaction conditions include: the heating temperature is 60-90 ℃; and/or heating and stirring for 2-4 h.
5. The method according to claim 1, wherein the solvent in S1 is at least one selected from the group consisting of water, ethanol, ethylene glycol and glycerol.
6. The method according to claim 1, wherein in S2, ti is contained in the added Ti metal salt solution, mn metal salt solution, ce metal salt solution, ni metal salt solution, and W metal salt solution 4+ 、Mn 2+ 、Ce 3+ 、Ni 2 + And W 6+ Are equimolar amounts.
7. The method according to claim 1, wherein in S2, the metal salt of Ti is selected from at least one of isopropyl titanate and n-butyl titanate; and/or the presence of a gas in the gas,
the metal salt of Mn is selected from at least one of manganese nitrate, manganese acetate and manganese chloride; and/or the presence of a gas in the atmosphere,
the Ce metal salt is at least one of cerium nitrate, cerium chloride and cerium acetate; and/or the presence of a gas in the atmosphere,
the metal salt of Ni is selected from at least one of nickel chloride, nickel acetate and nickel nitrate; and/or the presence of a gas in the atmosphere,
the metal salt of W is at least one selected from tungsten hexachloride and ammonium metatungstate.
8. The method according to claim 1, wherein in S3, the reaction conditions include: the heating reflux temperature is 80-140 ℃; and/or the heating reflux time is 4 to 10 hours.
9. The method according to claim 1, wherein in S4, the reaction conditions include: the calcining temperature is 800-1000 ℃.
10. The graphene oxide intercalated two-dimensional high-entropy alloy prepared by the preparation method of any one of claims 1 to 9 is applied to the field of denitration.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047421A (en) * | 2015-06-15 | 2015-11-11 | 昆明理工大学 | Method for preparing graphene/basic carbonate nanocomposite material |
| CN106531975A (en) * | 2015-09-10 | 2017-03-22 | 中国科学院宁波材料技术与工程研究所 | Graphene composite material, and preparation methods and application thereof |
| CN110560081A (en) * | 2019-07-26 | 2019-12-13 | 浙江大学 | Alloy nano-particles and preparation method and application thereof |
| CN112077331A (en) * | 2020-09-10 | 2020-12-15 | 西北有色金属研究院 | Preparation method of carbon material-loaded nanoscale multicomponent alloy |
| US20220111466A1 (en) * | 2020-10-14 | 2022-04-14 | Nanjing University | Laser scanning ablation synthesis of medium-entropy and high-entropy particles with size from nanometer to micrometer |
| CN114914464A (en) * | 2022-05-09 | 2022-08-16 | 北京化工大学 | Preparation method of hollow structure palladium-based high-entropy alloy |
-
2022
- 2022-08-23 CN CN202211015405.3A patent/CN115466898B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047421A (en) * | 2015-06-15 | 2015-11-11 | 昆明理工大学 | Method for preparing graphene/basic carbonate nanocomposite material |
| CN106531975A (en) * | 2015-09-10 | 2017-03-22 | 中国科学院宁波材料技术与工程研究所 | Graphene composite material, and preparation methods and application thereof |
| CN110560081A (en) * | 2019-07-26 | 2019-12-13 | 浙江大学 | Alloy nano-particles and preparation method and application thereof |
| CN112077331A (en) * | 2020-09-10 | 2020-12-15 | 西北有色金属研究院 | Preparation method of carbon material-loaded nanoscale multicomponent alloy |
| US20220111466A1 (en) * | 2020-10-14 | 2022-04-14 | Nanjing University | Laser scanning ablation synthesis of medium-entropy and high-entropy particles with size from nanometer to micrometer |
| CN114914464A (en) * | 2022-05-09 | 2022-08-16 | 北京化工大学 | Preparation method of hollow structure palladium-based high-entropy alloy |
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