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Preparation method and application of hollow carbon nanosphere confinement tin nanocluster composite material

A carbon nanosphere and composite material technology, applied in the field of new materials, can solve the problems of cumbersome template removal steps, reduce atom economy, increase preparation steps, etc., achieve good sodium storage performance, and the supported nano-tin particles are environmentally friendly and broad. The effect of the application foreground

Active Publication Date: 2021-05-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the template-post-modification method generally has the following disadvantages that are difficult to overcome: the construction of the template cavity involves multiple coatings, and the interface compatibility problem needs to be solved; the template removal steps are cumbersome, which reduces the "atom economy" of the reaction, and even It may pollute the environment (such as etching silica hard templates with hydrofluoric acid); in addition, the post-modification loading not only increases the preparation steps, but also the prepared particles are large in size and unevenly distributed, requiring special interfacial interactions to Anchor metal particles to prevent agglomeration and sintering

Method used

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  • Preparation method and application of hollow carbon nanosphere confinement tin nanocluster composite material
  • Preparation method and application of hollow carbon nanosphere confinement tin nanocluster composite material
  • Preparation method and application of hollow carbon nanosphere confinement tin nanocluster composite material

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Embodiment 1

[0030] A method for preparing a hollow carbon nanosphere confined tin nanocluster composite material, comprising the following steps:

[0031] S1, using the sol-gel method, take 0.9g of stannous chloride dihydrate and 0.3g of thiourea and disperse them in 30mL of ultrapure water, and magnetically stir until clarified to obtain a tin dioxide sol;

[0032] S2, take 2.5mL of tin dioxide sol and 51.5mL of ultrapure water into the reactor, add 6mL of TritonX-100 aqueous solution with a mass concentration of 0.01g / mL, 0.38mL of pyrrole monomer and 0.49mL of aniline monomer, and stir by magnetic force , ultrasonic dispersion, and stirring in an ice-water bath for 30 minutes each, add pre-cooled ammonium persulfate solution, stand at 0°C for polymerization reaction for 10 hours, collect the product by vacuum filtration, and wash the product with ultrapure water until the pH of the filtrate is close to neutral. properties, and then dried in a 60°C drying oven to obtain a hollow carbon-...

Embodiment 2

[0038] A method for preparing a hollow carbon nanosphere confined tin nanocluster composite material, comprising the following steps:

[0039] S1. Using the sol-gel method, disperse 0.9g of stannous chloride dihydrate and 0.3g of thiourea in 30mL of ultrapure water, and magnetically stir until clear to obtain a tin dioxide sol.

[0040] S2, take 2.5mL of tin dioxide sol and 51.5mL of ultrapure water into the reactor, add 6mL of TritonX-100 aqueous solution with a mass concentration of 0.01g / mL, 0.29mL of pyrrole monomer and 0.38mL of aniline monomer, and stir by magnetic force , ultrasonic dispersion, and stirring in an ice-water bath for 30 minutes, add pre-cooled ammonium persulfate solution, and stand at 0°C for polymerization reaction for 10 hours. After the reaction, collect the product by vacuum filtration, and wash the product with ultrapure water to the filtrate The pH is close to neutral, and then dried in a drying oven at 60°C to obtain a hollow carbon-confined tin p...

Embodiment 3

[0044] A method for preparing a hollow carbon nanosphere confined tin nanocluster composite material, comprising the following steps:

[0045] S1. Using the sol-gel method, disperse 0.9g of stannous chloride dihydrate and 0.3g of thiourea in 30mL of ultrapure water, and magnetically stir until clear to obtain a tin dioxide sol.

[0046] S2, take 5mL of tin dioxide sol and 49mL of ultrapure water into the reactor, add 6mL of TritonX-100 aqueous solution with a mass concentration of 0.01g / mL, 0.38mL of pyrrole monomer and 0.49mL of aniline monomer, magnetic stirring, ultrasonic After dispersing and stirring in an ice-water bath for 30 minutes, add pre-cooled ammonium persulfate solution, and stand at 0°C for polymerization reaction for 10 hours. After the reaction, collect the product by vacuum filtration, and wash the product with ultrapure water until the pH of the filtrate is close to Neutral, and then dried in a 60°C drying oven to obtain a hollow carbon-confined tin precurs...

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Abstract

The invention provides a preparation method of a hollow carbon nanosphere confinement tin nanocluster composite material, and belongs to the technical field of new materials. The method comprises the following steps: S1, uniformly dispersing stannous chloride dihydrate and thiourea in a water solvent to obtain stannic oxide sol; S2, uniformly dispersing a reaction monomer, a surfactant and the stannic oxide sol prepared in S1 into a water solvent, and performing polymerization reaction under the condition of 0 DEG C and the action of an initiator to prepare a hollow polymer loaded stannic oxide precursor; and S3, in an inert gas or nitrogen atmosphere, the precursor is subjected to carbonization treatment, and the hollow carbon nanosphere confined tin nanocluster composite material is obtained. The superfine tin nano-cluster is successfully confined to the hollow carbon nanosphere wall through the micelle interfacial polymerization technology, and the method has the advantages that the steps are simple and convenient, the loaded tin nano-particles are fine and uniform, and the method is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method and application of a hollow carbon nanosphere confined tin nanocluster composite material. Background technique [0002] Porous carbon materials composited with metal functional particles, especially metal particle-modified hollow carbon nanosphere composites, is an important class of porous carbon-based materials, which can realize the synergistic effect of functional metal particles, cavities and porous carbon shell structures. Catalysis, energy storage / conversion, gas storage, adsorption separation, drug sustained release and other fields have potential application prospects. Among them, the construction of ultrafine metal particles and highly dispersed in the carbon carrier is expected to maximize the utilization of metal atoms; at the same time, the confinement effect of nanopores can also effectively stabilize the highly active ultrafi...

Claims

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Application Information

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IPC IPC(8): C01B32/05B22F9/20B22F1/00B82Y40/00B82Y30/00H01M4/36H01M4/38H01M4/587H01M4/62H01M10/054
CPCC01B32/05B22F9/20B82Y40/00B82Y30/00H01M4/366H01M4/387H01M4/587H01M4/625H01M10/054H01M2004/027B22F1/07B22F1/054Y02E60/10
Inventor 徐飞曲昌镇邱玉倩丁百川王洪强
Owner NORTHWESTERN POLYTECHNICAL UNIV
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