Preparation method for hollow carbon material and product

A carbon material, hollow technology, applied in the field of preparation of new hollow carbon materials, can solve the problem of no hollow cavity, etc., achieve low cost, strong controllability, and realize the effect of large-scale production

Active Publication Date: 2016-11-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, starting from biomass raw materials, most of the synthesized carbon materials are block carbon materials without hollow cavity structure.

Method used

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  • Preparation method for hollow carbon material and product
  • Preparation method for hollow carbon material and product
  • Preparation method for hollow carbon material and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: Taking glucose as carbon source

[0035] Dissolve 75mg of sodium oleate and 150mg of P123 in 30mL of water to obtain solution I; then dissolve 5g of glucose in 30mL of water to obtain solution II; then mix solution I and solution II and stir for 10min; at 160°C Hydrothermal for 24 hours, centrifuged, washed with water, and dried to obtain the precursor. The precursor was put into a muffle furnace and calcined in a nitrogen inert gas atmosphere at a heating rate of 10 °C / min, and calcined at 1000 °C for 1 h to obtain hollow carbon spheres. Relevant characterizations of prepared products such as figure 1 shown

Embodiment 2

[0036] Embodiment 2: Taking fructose as carbon source

[0037] Dissolve 75mg of sodium oleate and 150mg of P123 in 30mL of water, then dissolve 5g of fructose in 30mL of water, then mix the two, stir for 10min; heat at 160°C for 24h, centrifuge, wash with water, and dry to obtain Hydrothermal products. The hydrothermal product was put into a muffle furnace and calcined in a nitrogen inert gas atmosphere at a heating rate of 10°C / min, and calcined at 1000°C for 1 hour to obtain hollow carbon spheres. The relevant characterization of the prepared product is as follows figure 2 shown.

Embodiment 3

[0038] Embodiment 3: Taking xylose as carbon source

[0039] Dissolve 75mg of sodium oleate and 150mg of P123 in 30mL of water, then dissolve 5g of xylose in 30mL of water, then mix the two, stir for 10min; heat at 160°C for 24h, centrifuge, wash with water, and dry A hydrothermal product is obtained. The hydrothermal product was put into a muffle furnace and calcined in a nitrogen inert gas atmosphere at a heating rate of 10°C / min, and calcined at 1000°C for 1 hour to obtain a "racket-shaped" hollow carbon material. The relevant characterization of the prepared product is as follows image 3 shown.

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Abstract

A disclosed preparation method for a hollow carbon material comprises taking a biomass raw material as a carbon source and a surfactant as a template, combining a hydrothermal process and a soft template process, and performing a hydrothermal reaction, so as to obtain a hollow polymer material, and then performing high-temperature calcining, so as to obtain the corresponding hollow carbon material. The invention also discloses a product prepared according to the above method. The method enables the biomass carbon source and the surfactant to be subjected to self-assembled for obtaining a hollow structure, and is capable of obtaining hollow carbon materials with different morphologies (spherical or racket-shaped) by changing variety of the carbon source.

Description

technical field [0001] The invention relates to the technical field of carbon materials, in particular to a method for preparing a novel hollow carbon material and a product thereof. Background technique [0002] In the past few decades, the preparation of carbon materials has been greatly developed due to their wide applications in catalysis, energy storage and conversion, adsorption, etc. Among them, hollow carbon materials have attracted the attention of many scientists due to their unique advantages, including special core-shell structure, good chemical and thermodynamic stability, high specific surface area and low density, and can be used as catalyst carriers. , Adsorbent materials, electrode materials for supercapacitors, fuel cells and lithium-ion batteries. So far, there are three main synthesis methods: hard template method, soft template method and hydrothermal synthesis method. The synthesis of hollow carbon materials by the hard template method is considered t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCC01P2004/03C01P2004/04C01P2004/34
Inventor 王勇陈春红韩传龙邓江
Owner ZHEJIANG UNIV
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