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Method for preparing activated carbon/nano-platinum/polyaniline composite material from corn stalks

A technology for preparing activated carbon and corn stalks, applied in chemical instruments and methods, carbon compounds, hybrid capacitor electrodes, etc., can solve problems such as environmental pollution and resource waste, achieve the effects of reducing environmental pollution, low cost, and broadening energy channels

Active Publication Date: 2018-01-30
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing activated carbon / nano-platinum / polyaniline composite material from corn stalks, using the high specific surface activated carbon prepared from corn stalks as a matrix, introducing nano-Pt in situ, and using Pt to catalyze the polyaniline Supercapacitor electrode materials with excellent performance can be obtained by adjusting the proportional relationship between the two and using the synergistic effect of the two; on the one hand, it promotes the comprehensive utilization of straw and solves the waste of resources and environmental pollution caused by straw waste and illegal incineration ; On the other hand, it provides a new idea for the development of new materials for high-performance and low-cost supercapacitors

Method used

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  • Method for preparing activated carbon/nano-platinum/polyaniline composite material from corn stalks
  • Method for preparing activated carbon/nano-platinum/polyaniline composite material from corn stalks

Examples

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Effect test

Embodiment 1

[0015] Example 1: Synthesize activated carbon / nano-platinum / polyaniline according to the following steps (activated carbon:aniline=1:5)

[0016] (1) Soak 4.0g of corn stalks crushed to 50 meshes in 32.0mL of phosphoric acid solution with a mass concentration of 18%, soak for 50min at 80°C, and then activate in a microwave oven with a power of 700W for 3min to obtain a high specific surface area activated carbon (C);

[0017] (2) Take 2.0 g of the activated carbon prepared in step (1), heat it in 30.0 mL of 6mol / L nitric acid at 60°C for 4 hours at a constant temperature in a water bath, centrifuge, wash with water until neutral, and dry to obtain activated activated carbon;

[0018] (3) Take 0.4g of the acid-treated activated carbon in step (2), add 0.38g of citric acid and 5.2mL of ethylene glycol solution containing 0.2M NaOH, inject 1.0mL of 0.04mol / L chloroplatinic acid, and heat to reflux for 1.5h. The product is centrifuged, washed, and dried to obtain activated carbon / ...

Embodiment 2

[0020] Example 2: Synthesize activated carbon / nano-platinum / polyaniline according to the following steps (activated carbon:aniline=1:20)

[0021] (1) Soak 8 g of corn stalks crushed to 50 mesh in 64 mL of phosphoric acid solution with a mass concentration of 18%, soak for 50 min at 80°C, and then activate in a microwave oven with a power of 700W for 3 min to obtain a high specific surface area Activated carbon (C);

[0022] (2) Take 4g of the activated carbon prepared in step (1), heat it in 40mL of 6mol / L nitric acid in a water bath at 60°C for 4 hours, centrifuge, wash with water until neutral, and dry to obtain activated activated carbon;

[0023] (3) Take 0.4g of activated carbon after step (2), 1.9g of citric acid, 26mL of 0.2mol / L sodium hydroxide in ethylene glycol, and 5mL of 0.04mol / L chloroplatinic acid solution in a round bottom flask , heated to reflux for 2 hours, and the product was centrifugally washed and dried to obtain a composite material of activated carbo...

Embodiment 3

[0025] Example 3: Synthesize activated carbon / nano-platinum / polyaniline according to the following steps (activated carbon:aniline=1:10)

[0026] (1) Soak 4.0g of corn stalks crushed to 50 meshes in 32.0mL of phosphoric acid solution with a mass concentration of 18%, soak for 50min at 80°C, and then activate in a microwave oven with a power of 700W for 3min to obtain a high specific surface area activated carbon (C);

[0027] (2) Take 2.0 g of activated carbon prepared in step (1), heat it in 60.0 mL of 6mol / L nitric acid at 60°C for 4 hours at a constant temperature in a water bath, centrifuge, wash with water until neutral, and dry to obtain activated activated carbon;

[0028] (3) Take 0.4g of the acid-treated activated carbon in step (2), add an appropriate amount of 0.76g of citric acid and 10.4mL of ethylene glycol solution containing 0.2M NaOH, inject 2.0mL of 0.04mol / L chloroplatinic acid, and heat to reflux for 1.5h , the product was centrifuged, washed, and dried to...

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Abstract

The invention discloses a method for preparing activated carbon / nano-platinum / polyaniline composite material from corn stalks. First, soak and pulverize corn stalk particles in a phosphoric acid solution, combine with microwave activation to prepare activated carbon with high specific surface area, and activate the activated carbon with nitric acid; Then add an appropriate amount of citric acid and ethylene glycol solution containing NaOH to the activated carbon to reduce chloroplatinic acid to prepare activated carbon / nano-platinum composite particles (C / Pt); finally put the C / Pt composite particles into a certain Add an appropriate amount of hydrogen peroxide to a sulfuric acid solution with a high concentration of aniline, and use nano-platinum to catalyze the polymerization of aniline to obtain an activated carbon / platinum / polyaniline composite (C / Pt / PAN). The invention adjusts the proportion relationship between activated carbon and polyaniline, and utilizes the synergistic effect of the two to prepare supercapacitor electrode materials with excellent performance.

Description

technical field [0001] The invention relates to a method for preparing activated carbon / nano-platinum / polyaniline composite material from corn stalks, in particular to a method for in-situ polymerization of aniline catalyzed by nano-Pt deposited in-situ in the channels of activated carbon made of corn stalks to synthesize polyaniline with high electrical storage performance. The invention relates to a preparation method of a novel composite material, which belongs to the field of composite functional materials. Background technique [0002] Activated carbon material with high specific surface area is currently the most potential positive electrode material for supercapacitors, but its cost accounts for nearly 30% of the total cost of the entire capacitor, which is the main reason for the high production cost of supercapacitors. In order to meet the requirements of large specific surface area, stable performance, and low cost of the prepared activated carbon, the raw material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/48C01B32/342C01B32/324C01B32/354
CPCY02E60/13
Inventor 张莉莉李仁杰朱挺峰李毅赵宜江汪信姚超
Owner HUAIYIN TEACHERS COLLEGE
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