Method for using biomass waste for preparing nitrogen-doped carbon nanotube coated metal particle composite material

A biomass waste, metal particle technology, applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of high preparation cost, cumbersome steps, low yield and purity, and achieve high application value and technology. Simple, wide-ranging effects

Active Publication Date: 2016-07-20
安徽皖瑞能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a method for preparing nitrogen-doped carbon nanotube-coated metal particle composite materials by utilizing biomass waste. Formation of nanoparticle structure, in-situ modification of nitrogen elements and other technical problems, and overcome the technical shortcomings of traditional preparation methods such as high preparation cost, cumbersome steps, low yield and purity

Method used

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  • Method for using biomass waste for preparing nitrogen-doped carbon nanotube coated metal particle composite material
  • Method for using biomass waste for preparing nitrogen-doped carbon nanotube coated metal particle composite material
  • Method for using biomass waste for preparing nitrogen-doped carbon nanotube coated metal particle composite material

Examples

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Embodiment 1

[0028] (1) Carbonized distiller's grain waste: Weigh 10.0g (0.1782mol) KOH and 10.0g distiller's grain waste, mix them in a beaker containing 80mL deionized water, keep stirring at 25°C for 8h, dry and grind, Obtain heterogeneous mixture A; place this heterogeneous mixture A in a quartz boat, and move the quartz boat to the constant temperature zone of a tubular resistance furnace with nitrogen protection gas, and heat up to 750°C, then carbonized at constant temperature for 2 hours, the product was washed with dilute hydrochloric acid solution with a concentration of 0.5mol / L and distilled water, and dried to obtain distiller's grain charcoal.

[0029] (2) Preparation of nitrogen-doped carbon nanotube-coated metal particle composites by pyrolysis

[0030] Weigh 0.2g distillers charcoal, 80.0mg (0.2878mmol) FeSO 4 ·7H 2 O and 4.0g (0.0317mol) melamine; Mix the three heterogeneously in a beaker containing 100mL of methanol, magnetically stir for 5h to mix the three evenly, th...

Embodiment 2

[0035] (1) Carbonized corn stalk waste: Weigh 10.0g (0.1782mol) KOH and 10.0g corn stalk waste, mix them in a beaker containing 80mL deionized water, keep stirring at 25°C for 8h, dry, Grind to obtain the heterogeneous mixture A; place the heterogeneous mixture A in a quartz boat, and move the quartz boat to the constant temperature zone of the tubular resistance furnace with nitrogen protection gas, at a heating rate of 10°C / min The temperature was raised to 750° C., and then carbonized at a constant temperature for 2 hours. The product was washed with a dilute hydrochloric acid solution with a concentration of 0.5 mol / L and distilled water, and dried to obtain corn stalk charcoal.

[0036] (2) Preparation of nitrogen-doped carbon nanotube-coated metal particle composites by pyrolysis

[0037] Weigh 0.2g corn stalk charcoal, 80.0mg (0.2878mmol) FeSO 4 ·7H 2 O and 4.0g (0.0317mol) melamine; Mix the three heterogeneously in a beaker containing 100mL of methanol, magnetically ...

Embodiment 3

[0040] (1) Carbonized rice husk waste: Weigh 10.0g (0.1782mol) KOH and 10.0g rice husk waste, mix them in a beaker containing 80mL deionized water, keep stirring at 25°C for 8h, dry, Grind to obtain the heterogeneous mixture A; place the heterogeneous mixture A in a quartz boat, and move the quartz boat to the constant temperature zone of the tubular resistance furnace with nitrogen protection gas, at a heating rate of 10°C / min Raise the temperature to 750°C, then carbonize at a constant temperature for 2 hours, wash the product with a dilute hydrochloric acid solution with a concentration of 0.5mol / L and distilled water, and obtain rice husk charcoal after drying.

[0041] (2) Preparation of nitrogen-doped carbon nanotube-coated metal particle composites by pyrolysis

[0042] Weigh 0.2g rice husk charcoal, 80.0mg (0.2878mmol) FeSO 4 ·7H 2 O and 4.0g (0.0317mol) melamine; Mix the three heterogeneously in a beaker containing 100mL of methanol, magnetically stir for 5h to mix ...

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Abstract

The invention discloses a method for using biomass waste for preparing a nitrogen-doped carbon nanotube coated metal particle composite material. The method includes the following steps that firstly, the biomass waste and KOH are evenly mixed in deionized water, an obtained heterogeneous mixture is carbonized under the protection of inert gas, and biomass charcoal is obtained; and then, the biomass charcoal, a nitrogenous nonmetallic compound and water-soluble divalent metal salt are evenly mixed in methyl alcohol, the obtained heterogeneous mixture is subjected to pyrolysis under the protection of the inert gas, and therefore a target product is obtained. By the adoption of the method, a two-step pyrolysis technology is adopted for achieving growth of carbon nanotubes, and dispersion of metal nanoparticles and formation of a cooperative acting mechanism are promoted; the stability of the composite material is reinforced through the structure of carbon nanotube coated metal nanoparticles; the surface activity and dispersity of a carbon layer are improved through in-situ decoration of the nitrogen element; and the contact and active site point number is increased through the formation of a rich pore structure and the high specific surface area.

Description

technical field [0001] The invention relates to a method for preparing a coated metal particle composite material by using biomass waste as a raw material, and belongs to the research field of comprehensive utilization of biomass waste. Background technique [0002] Due to their unique mechanical, electronic and chemical properties, carbon nanotubes have attracted widespread attention worldwide, and have been widely used in many fields such as electricity, optics, catalysis, and biomedicine. In recent years, with the deepening of research on carbon nanomaterials and the promotion of their applications, simple, low-cost, batch preparation of carbon nanocomposites has become the key to promote their wide application. Exploring and developing the preparation of carbon nanocomposites using cheap and easy-to-obtain biomass waste resources in nature has become a hot issue widely concerned by scientists and engineers. [0003] On the other hand, the modification of carbon nanotube...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02B22F9/30B82Y40/00
CPCB82Y40/00B22F9/30B22F1/07B22F1/16
Inventor 姚运金吴国东连超陈浩陈本金
Owner 安徽皖瑞能源科技有限公司
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