CN113135588A - Carbon-coated SnO2Preparation method of hollow nanosphere - Google Patents

Carbon-coated SnO2Preparation method of hollow nanosphere Download PDF

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CN113135588A
CN113135588A CN202110420054.3A CN202110420054A CN113135588A CN 113135588 A CN113135588 A CN 113135588A CN 202110420054 A CN202110420054 A CN 202110420054A CN 113135588 A CN113135588 A CN 113135588A
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hollow nanosphere
hollow
carbon
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coated
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杨友文
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Hefei University of Technology
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Hefei University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G19/00—Compounds of tin
    • C01G19/02—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C01P2004/34—Spheres hollow
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases

Abstract

The invention discloses a carbon-coated Sn02The preparation method of the hollow nanosphere comprises the following steps: preparation of Sn02Hollow nanosphere carbonized precursor, and prepared Sn02Screening the hollow nanosphere carbonized precursor; for the screened Sn02Grinding the hollow nanosphere carbonized precursor, and then grinding the Sn02The hollow nanosphere carbonized powder is calcined. The invention relates to carbon-coated Sn02The preparation method of the hollow nanosphere has the advantages that the raw materials are simple and cheap, no additive is required to be added in the calcining process, the calcining time is short, the production cost can be reduced, and the carbon-coated Sn0 is coated with carbon2The preparation method of the hollow nanosphere is simple and can be used for large-scale production, and D-glucose and Sn0 can be adjusted2Proportional adjustment of hollow nanospheres to generate carbon-coated Sn02The thickness of the carbon layer of the hollow nanosphere can be increased, so that the carbon-coated Sn0 can be improved2The hollow nanospheres have better stability and quality.

Description

Carbon-coated SnO2Preparation method of hollow nanosphere
Technical Field
The invention relates to the field of hollow nanospheres, in particular to carbon-coated Sn02A preparation method of hollow nanospheres.
Background
As a nano material with high specific surface area and low density, the hollow nano carbon sphere not only has the characteristics of good permeability, higher chemical and thermal stability, adsorption property, nontoxicity, biocompatibility and the like, but also has a regular spherical structure, so that the hollow nano carbon sphere has great potential application value in a plurality of new technical fields such as gas storage, catalyst carriers, biological controllable drug delivery, biological capsules, light structure materials, micro-nano containers, super capacitor electrode materials and the like.
The existing hollow nano carbon spheres have expensive raw materials, various additives need to be added in the reaction process, the production and calcination time is long, and the production cost is high, so that a carbon-coated Sn0 is provided2A preparation method of hollow nanospheres.
Disclosure of Invention
The invention mainly aims to provide carbon-coated Sn02The preparation method of the hollow nanosphere can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
carbon-coated Sn02The preparation method of the hollow nanosphere comprises the following steps:
(1) preparation of Sn02Hollow nanosphere carbonized precursor, and prepared Sn02Screening the hollow nanosphere carbonized precursor;
(2) and the screened Sn02Grinding the hollow nanosphere carbonized precursor, and then grinding the Sn02Calcining the hollow nanosphere carbonized powder;
(3) the calcined Sn02Taking out the hollow nanospheres, and screening the products to obtain the carbon-coated Sn02Hollow nanospheres.
Preferably, Sn0 is prepared in step (1)2The preparation method of the hollow nanosphere carbonized precursor comprises the following steps:
(i) arrangement of Sn02Mixed liquid required by the hollow nanosphere carbonized precursor;
② treating the mixed solution to obtain Sn02A hollow nanosphere precursor;
③ to Sn02Treating the hollow nanosphere precursor to obtain a second mixed solution;
fourthly, processing the second mixed solution to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
Preferably, the preparing the mixed solution in the step (i) comprises the following steps:
i, adding absolute ethyl alcohol, distilled water and concentrated hydrochloric acid into a reaction container;
II, stirring the raw materials by adopting a stirrer to fully mix the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid;
III, adding the uniformly mixed raw materials into ultrasonic equipment for ultrasonic treatment;
and IV, stirring the ultrasonically treated raw materials again to obtain a mixed solution.
Preferably, the ratio of the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid in the step I is 160:13-17:3-5, the stirring machine in the step II adopts a magnetic stirrer, the stirring time is 2-4min, stannous oxide is added into the reaction container before ultrasonic treatment in the step III, the ultrasonic time is 6-10min, and the stirring time in the step IV is 55-65min again.
Preferably, the optimal ratio of the absolute ethyl alcohol to the distilled water to the concentrated hydrochloric acid is 150:15:4, the stirrer in the step II adopts a magnetic stirrer, the stirring time is 3min, stannous oxide is added into the reaction container before the ultrasonic treatment in the step III, the ultrasonic time is 9min, and the stirring time in the step IV is 58min again.
Preferably, the treatment of the mixed solution in the second step includes the following steps:
A. adding the mixed solution into a reaction kettle for reaction;
B. sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product to obtain Sn02A hollow nanosphere precursor.
Preferably, the reaction temperature in the step A is 180-210 ℃, the reaction time is 10-12h, and the reaction product is cooled to room temperature before the treatment in the step B.
Preferably, the reaction temperature in the step A is 190 ℃, the reaction time is 11h, and the reaction product is cooled to room temperature before the treatment in the step B.
Preferably, Sn0 in step (c)2The hollow nanosphere precursor treatment comprises the following steps:
a. dissolving D-glucose in water, and then carrying out ultrasonic treatment;
b. addition of Sn0 to sonicated D-glucose water2And (5) carrying out hollow nanosphere precursor, and continuing ultrasonic treatment.
Preferably, the ultrasonic treatment time in step a is 8-12min, the D-glucose water in step b is 2.5% -7.5% of D-glucose water, and the added Sn02The weight ratio of the hollow nanosphere precursor to the D-glucose is 1:10-30, and the ultrasonic time is 25-30 min.
Preferably, the ultrasonic treatment time in step a is 10min, the D-glucose water in step b is 2.5% -7.5% of D-glucose water, and the added Sn02The weight ratio of the hollow nanosphere precursor to the D-glucose is 1:10-30, and the ultrasonic time is 28 min.
The proportion of the hollow nanosphere precursor to the D-glucose is different, and the obtained carbon-coated Sn02The wall thickness of the hollow nanospheres is different, and the carbon coating of Sn0 can be realized by controlling the proportion of the hollow nanosphere precursor to D-glucose2Control of wall thickness of hollow nanospheres.
Preferably, the processing of the second mixed solution in the step (iv) includes the steps of:
adding the second mixed solution into a reaction kettle to react for 2-7h at the temperature of 180-190 ℃;
(II) sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
Preferably, Sn0 in step (2)2The particle size of the carbonized precursor of the hollow nanosphere is 200-500nm after grinding, and the ground Sn0 is used during calcination2And (3) flattening the hollow nanosphere carbonized precursor powder, wherein the heating rate in the calcining process is 4-7 ℃/min, the temperature is increased to 500-550 ℃, and the constant temperature is kept for calcining for 2-4 h.
Compared with the prior art, the carbon-coated Sn0 is prepared by the method2The preparation method of the hollow nanosphere has the following beneficial effects:
1. the raw materials in the invention are simple and cheap, no additive is needed in the calcining process, the calcining time is short, the production cost can be reduced, and the carbon-coated Sn02The preparation method of the hollow nanosphere is simple and can be produced on a large scale;
2. in the invention, D-glucose and Sn0 can be adjusted2Proportional adjustment of hollow nanospheres to generate carbon-coated Sn02The thickness of the carbon layer of the hollow nanosphere can be increased, so that the carbon-coated Sn0 can be improved2The hollow nanospheres have better stability and quality.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
Carbon-coated Sn02The preparation method of the hollow nanosphere comprises the following steps:
(1) preparation of Sn02Hollow nanosphere carbonized precursor, and prepared Sn02Screening the hollow nanosphere carbonized precursor;
preparation of Sn0 in step (1)2The preparation method of the hollow nanosphere carbonized precursor comprises the following steps:
(i) arrangement of Sn02Mixed liquid required by the hollow nanosphere carbonized precursor;
i, adding absolute ethyl alcohol, distilled water and concentrated hydrochloric acid into a reaction container, wherein the ratio of the absolute ethyl alcohol to the distilled water to the concentrated hydrochloric acid is 150:15: 4;
II, stirring the raw materials by adopting a stirrer, so that the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid are fully mixed, wherein the stirrer adopts a magnetic stirrer, and the stirring time is 3 min;
III, adding the uniformly mixed raw materials into ultrasonic equipment for ultrasonic treatment, wherein stannous oxide is added into a reaction container before the ultrasonic treatment, and the ultrasonic time is 9 min;
and IV, re-stirring the ultrasonically treated raw materials for 58min to obtain a mixed solution.
② treating the mixed solution to obtain Sn02A hollow nanosphere precursor;
A. adding the mixed solution into a reaction kettle for reaction, wherein the reaction temperature is 190 ℃, and the reaction time is 11 hours;
B. cooling a reaction product to room temperature, sequentially performing centrifugal treatment, washing and drying on the reaction product, washing the product obtained by centrifuging for 3-4 times by using distilled water and ethanol, and drying by using a dryer at the drying temperature of 65 ℃ to obtain Sn02A hollow nanosphere precursor.
③ to Sn02Treating the hollow nanosphere precursor to obtain a second mixed solution;
a. dissolving D-glucose in water, and performing ultrasonic treatment for 10 min;
b. addition of Sn0 to sonicated D-glucose water2Continuing ultrasonic treatment of the hollow nanosphere precursor, wherein the D-glucose water is 2.5% of D-glucose water, and adding Sn02The weight ratio of the hollow nanosphere precursor to the D-glucose is 1:10, and the ultrasonic time is 26 min.
Fourthly, processing the second mixed solution to obtain Sn02A hollow nanosphere carbonized precursor;
adding the second mixed solution into a reaction kettle to react for 5 hours at 185 ℃;
(II) sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product, centrifuging for 4 times by using a centrifuge to obtain a black product, cleaning for 5 feet by using deionized water and ethanol, and drying for 5 hours at 65 ℃ by using a dryer to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
(2) And the screened Sn02Grinding the hollow nanosphere carbonized precursor, and then grinding the Sn02Calcining the hollow nanosphere carbonized powder;
Sn02the particle size of the carbonized precursor of the hollow nanosphere is 200nm after grinding, and the grinded Sn0 is calcined2And (3) flattening the hollow nanosphere carbonized precursor powder, heating to 550 ℃ at the heating rate of 6 ℃/min during calcination, and calcining for 3h at constant temperature.
(3) The calcined Sn02Taking out the hollow nanospheres, screening the products with the particle size of 200-400nm,obtaining carbon coated Sn02Hollow nanospheres.
Example 2
Carbon-coated Sn02The preparation method of the hollow nanosphere comprises the following steps:
(2) preparation of Sn02Hollow nanosphere carbonized precursor, and prepared Sn02Screening the hollow nanosphere carbonized precursor;
preparation of Sn0 in step (1)2The preparation method of the hollow nanosphere carbonized precursor comprises the following steps:
(i) arrangement of Sn02Mixed liquid required by the hollow nanosphere carbonized precursor;
i, adding absolute ethyl alcohol, distilled water and concentrated hydrochloric acid into a reaction container, wherein the ratio of the absolute ethyl alcohol to the distilled water to the concentrated hydrochloric acid is 150:15: 4;
II, stirring the raw materials by adopting a stirrer, so that the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid are fully mixed, wherein the stirrer adopts a magnetic stirrer, and the stirring time is 3 min;
III, adding the uniformly mixed raw materials into ultrasonic equipment for ultrasonic treatment, wherein stannous oxide is added into a reaction container before the ultrasonic treatment, and the ultrasonic time is 9 min;
and IV, re-stirring the ultrasonically treated raw materials for 58min to obtain a mixed solution.
② treating the mixed solution to obtain Sn02A hollow nanosphere precursor;
A. adding the mixed solution into a reaction kettle for reaction, wherein the reaction temperature is 190 ℃, and the reaction time is 11 hours;
B. cooling a reaction product to room temperature, sequentially performing centrifugal treatment, washing and drying on the reaction product, washing the product obtained by centrifuging for 3-4 times by using distilled water and ethanol, and drying by using a dryer at the drying temperature of 65 ℃ to obtain Sn02A hollow nanosphere precursor.
③ to Sn02Treating the hollow nanosphere precursor to obtain a second mixed solution;
a. dissolving D-glucose in water, and performing ultrasonic treatment for 10 min;
b. addition of Sn0 to sonicated D-glucose water2Continuing ultrasonic treatment of the hollow nanosphere precursor, wherein the D-glucose water is 5% of D-glucose water, and added Sn02The weight ratio of the hollow nanosphere precursor to the D-glucose is 1:20, and the ultrasonic time is 26 min.
Fourthly, processing the second mixed solution to obtain Sn02A hollow nanosphere carbonized precursor;
adding the second mixed solution into a reaction kettle to react for 5 hours at 185 ℃;
(II) sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product, centrifuging for 4 times by using a centrifuge to obtain a black product, cleaning for 5 feet by using deionized water and ethanol, and drying for 5 hours at 65 ℃ by using a dryer to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
(2) And the screened Sn02Grinding the hollow nanosphere carbonized precursor, and then grinding the Sn02Calcining the hollow nanosphere carbonized powder;
Sn02the particle size of the carbonized precursor of the hollow nanosphere is 200nm after grinding, and the grinded Sn0 is calcined2And (3) flattening the hollow nanosphere carbonized precursor powder, heating to 550 ℃ at the heating rate of 6 ℃/min during calcination, and calcining for 3h at constant temperature.
(3) The calcined Sn02Taking out the hollow nanospheres, screening the products, and screening the products with the particle size of 200-400nm to obtain the carbon-coated Sn02Hollow nanospheres.
Example 3
Carbon-coated Sn02The preparation method of the hollow nanosphere comprises the following steps:
(1) preparation of Sn02Hollow nanosphere carbonized precursor, and prepared Sn02Screening the hollow nanosphere carbonized precursor;
preparation of Sn0 in step (1)2The preparation method of the hollow nanosphere carbonized precursor comprises the following steps:
(i) arrangement of Sn02Mixed liquid required by the hollow nanosphere carbonized precursor;
i, adding absolute ethyl alcohol, distilled water and concentrated hydrochloric acid into a reaction container, wherein the ratio of the absolute ethyl alcohol to the distilled water to the concentrated hydrochloric acid is 150:15: 4;
II, stirring the raw materials by adopting a stirrer, so that the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid are fully mixed, wherein the stirrer adopts a magnetic stirrer, and the stirring time is 3 min;
III, adding the uniformly mixed raw materials into ultrasonic equipment for ultrasonic treatment, wherein stannous oxide is added into a reaction container before the ultrasonic treatment, and the ultrasonic time is 9 min;
and IV, re-stirring the ultrasonically treated raw materials for 58min to obtain a mixed solution.
② treating the mixed solution to obtain Sn02A hollow nanosphere precursor;
A. adding the mixed solution into a reaction kettle for reaction, wherein the reaction temperature is 190 ℃, and the reaction time is 11 hours;
B. cooling a reaction product to room temperature, sequentially performing centrifugal treatment, washing and drying on the reaction product, washing the product obtained by centrifuging for 3-4 times by using distilled water and ethanol, and drying by using a dryer at the drying temperature of 65 ℃ to obtain Sn02A hollow nanosphere precursor.
③ to Sn02Treating the hollow nanosphere precursor to obtain a second mixed solution;
a. dissolving D-glucose in water, and performing ultrasonic treatment for 10 min;
b. addition of Sn0 to sonicated D-glucose water2Continuing ultrasonic treatment of the hollow nanosphere precursor, wherein the D-glucose water is 7.5% of D-glucose water, and adding Sn02The weight ratio of the hollow nanosphere precursor to the D-glucose is 1:30, and the ultrasonic time is 26 min.
Fourthly, processing the second mixed solution to obtain Sn02A hollow nanosphere carbonized precursor;
adding the second mixed solution into a reaction kettle to react for 5 hours at 185 ℃;
(II) sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product, centrifuging for 4 times by using a centrifuge to obtain a black product, cleaning for 5 feet by using deionized water and ethanol, and drying for 5 hours at 65 ℃ by using a dryer to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
(2) And the screened Sn02Grinding the hollow nanosphere carbonized precursor, and then grinding the Sn02Calcining the hollow nanosphere carbonized powder;
Sn02the particle size of the carbonized precursor of the hollow nanosphere is 200nm after grinding, and the grinded Sn0 is calcined2And (3) flattening the hollow nanosphere carbonized precursor powder, heating to 550 ℃ at the heating rate of 6 ℃/min during calcination, and calcining for 3h at constant temperature.
(3) The calcined Sn02Taking out the hollow nanospheres, screening the products, and screening the products with the particle size of 200-400nm to obtain the carbon-coated Sn02Hollow nanospheres.
Sn0 in examples 1 to 32The weight ratio of the hollow nanosphere precursor to the D-glucose is different, and the obtained carbon-coated Sn02The thicknesses of the carbon layers on the outer surface of the hollow nanosphere are different, and the thicknesses of the carbon layers are 16nm, 18nm and 20nm in sequence.
In addition, the carbon-coated Sn0 of the invention2The preparation method of the hollow nanosphere has the advantages that the raw materials are simple and cheap, no additive is required to be added in the calcining process, the calcining time is short, the production cost can be reduced, and the carbon-coated Sn0 is coated with carbon2The preparation method of the hollow nanosphere is simple and can be produced on a large scale;
in the invention, D-glucose and Sn0 can be adjusted2Proportional adjustment of hollow nanospheres to generate carbon-coated Sn02The thickness of the carbon layer of the hollow nanosphere can be increased, so that the carbon-coated Sn0 can be improved2The hollow nanospheres have better stability and quality.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. Carbon-coated Sn02The preparation method of the hollow nanosphere is characterized by comprising the following steps of:
(1) preparation of Sn02Hollow nanosphere carbonized precursor, and prepared Sn02Screening the hollow nanosphere carbonized precursor;
(2) and the screened Sn02Grinding the hollow nanosphere carbonized precursor, and then grinding the Sn02Calcining the hollow nanosphere carbonized powder;
(3) the calcined Sn02Taking out the hollow nanospheres, and screening the products to obtain the carbon-coated Sn02Hollow nanospheres.
2. The carbon-coated Sn0 of claim 12The preparation method of the hollow nanosphere is characterized by comprising the following steps: preparation of Sn0 in step (1)2The preparation method of the hollow nanosphere carbonized precursor comprises the following steps:
(i) arrangement of Sn02Mixed liquid required by the hollow nanosphere carbonized precursor;
② treating the mixed solution to obtain Sn02A hollow nanosphere precursor;
③ to Sn02Treating the hollow nanosphere precursor to obtain a second mixed solution;
fourthly, processing the second mixed solution to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
3. The carbon-coated Sn0 of claim 22A method for preparing a hollow nanosphere, which comprises the following steps,the method is characterized in that: the preparation of the mixed liquor in the step I comprises the following steps:
i, adding absolute ethyl alcohol, distilled water and concentrated hydrochloric acid into a reaction container;
II, stirring the raw materials by adopting a stirrer to fully mix the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid;
III, adding the uniformly mixed raw materials into ultrasonic equipment for ultrasonic treatment;
and IV, stirring the ultrasonically treated raw materials again to obtain a mixed solution.
4. The carbon-coated Sn0 of claim 32The preparation method of the hollow nanosphere is characterized by comprising the following steps: the ratio of the absolute ethyl alcohol, the distilled water and the concentrated hydrochloric acid in the step I is 140-160:13-17:3-5, the stirring machine in the step II adopts a magnetic stirrer, the stirring time is 2-4min, stannous oxide is added into the reaction container before ultrasonic treatment in the step III, the ultrasonic time is 6-10min, and the stirring time in the step IV is 55-65min again.
5. The carbon-coated Sn0 of claim 22The preparation method of the hollow nanosphere is characterized by comprising the following steps: the treatment of the mixed liquid in the step II comprises the following steps:
A. adding the mixed solution into a reaction kettle for reaction;
B. sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product to obtain Sn02A hollow nanosphere precursor.
6. The carbon-coated Sn0 of claim 52The preparation method of the hollow nanosphere is characterized by comprising the following steps: the reaction temperature in the step A is 180-.
7. The carbon-coated Sn0 of claim 22The preparation method of the hollow nanosphere is characterized by comprising the following steps: step III Sn02Front hollow nanosphereThe body-driving treatment comprises the following steps:
a. dissolving D-glucose in water, and then carrying out ultrasonic treatment;
b. addition of Sn0 to sonicated D-glucose water2And (5) carrying out hollow nanosphere precursor, and continuing ultrasonic treatment.
8. The carbon-coated Sn0 of claim 72The preparation method of the hollow nanosphere is characterized by comprising the following steps: the ultrasonic treatment time in step a is 8-12min, the D-glucose water in step b is 2.5% -7.5% of D-glucose water, and added Sn02The weight ratio of the hollow nanosphere precursor to the D-glucose is 1:10-30, and the ultrasonic time is 25-30 min.
9. The carbon-coated Sn0 of claim 22The preparation method of the hollow nanosphere is characterized by comprising the following steps: the processing of the second mixed solution in the fourth step comprises the following steps:
adding the second mixed solution into a reaction kettle to react for 2-7h at the temperature of 180-190 ℃;
(II) sequentially carrying out centrifugal treatment, washing and drying treatment on the reaction product to obtain Sn02And (3) carbonizing a precursor of the hollow nanosphere.
10. The carbon-coated Sn0 of claim 12The preparation method of the hollow nanosphere is characterized by comprising the following steps: sn0 in step (2)2The particle size of the carbonized precursor of the hollow nanosphere is 200-500nm after grinding, and the ground Sn0 is used during calcination2And (3) flattening the hollow nanosphere carbonized precursor powder, wherein the heating rate in the calcining process is 4-7 ℃/min, the temperature is increased to 500-550 ℃, and the constant temperature is kept for calcining for 2-4 h.
CN202110420054.3A 2021-04-19 2021-04-19 Carbon-coated SnO2Preparation method of hollow nanosphere Pending CN113135588A (en)

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Application publication date: 20210720