Method for preparing three-dimensional order porous carbon/Prussian blue nanocomposite

A nanocomposite material and three-dimensional ordered technology, which is applied in the field of three-dimensional ordered porous carbon/Prussian blue nanocomposite materials prepared from biomass kenaf stalks, can solve the problems of high price, limited application of composite materials, and complicated preparation methods of composite materials

Active Publication Date: 2013-07-10

JIANGXI NORMAL UNIVERSITY

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AI-Extracted Technical Summary

Problems solved by technology

At present, domestic and foreign counterparts have used the excellent catalytic properties of carbon and Prussian blue to prepare various carbon/Prussian blue nan...

Abstract

The invention discloses a method for preparing a three-dimensional order porous carbon/Prussian blue nanocomposite. Different from conventional reports, the three-dimensional order porous carbon/Prussian blue nanocomposite prepared by the method is based on a natural biomass original structure. The method for preparing the nanocomposite comprises steps of: preparing porous carbon through carbonized natural plants-ambary stems; and chemically synthesizing to obtain the three-dimensional order porous carbon/Prussian blue nanocomposite. The three-dimensional order porous carbon/Prussian blue nanocomposite has the following obvious advantages of simple preparation process, low prices, good catalytic performance and wide application to electrocatalysis.

Application Domain

Material nanotechnologyCyanic/isocyanic acid +1

Technology Topic

BiomassChemical synthesis +4

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Examples

Experimental program(2)

Example Embodiment

[0019] Example 2

[0020] The technical scheme of the present invention mainly includes three steps of carbonization, functionalization and chemical synthesis:

[0021] 1) Obtain three-dimensional ordered porous carbon by carbonization: put the dried kenaf rod with a porous structure in a suitable size in a tube furnace at 900 ℃ N 2 Calcination in atmosphere for 2 h to obtain three-dimensional ordered porous carbon;

[0022] 2) Obtain the three-dimensional ordered porous carbon/Prussian blue nanocomposite by chemical synthesis: (1) Cut the above-mentioned three-dimensional ordered porous carbon into a suitable size and perform acid treatment to obtain a functionalized three-dimensional ordered porous carbon;

[0023] (2) Put 5 mL30 mM FeCl 3 Mix with the above block 0.5 g functionalized three-dimensional ordered porous carbon, ultrasonicate for 1 h, let FeCl 3 Adsorbed on the surface of the functionalized three-dimensional ordered porous carbon material, and then add 5mL30 mM K to this mixture 3 Fe(CN) 6 And 1 mL of 36% concentrated hydrochloric acid with a mass fraction of 36%, heated in a round-bottom flask at 80 ℃ and refluxed for 12 h. Finally, the resulting blue product was washed with ultrapure water to pH=7, and then dried in an oven at 75 ℃. h, the three-dimensional ordered porous carbon/Prussian blue nanocomposite is obtained.

Example Embodiment

[0024] Example 3

[0025] The technical scheme of the present invention mainly includes three steps of carbonization, functionalization and chemical synthesis:

[0026] 1) Obtain three-dimensional ordered porous carbon by carbonization: put the dried kenaf rod with a porous structure in a suitable size in a tube furnace at 900 ℃ N 2 Calcination in atmosphere for 2 h to obtain three-dimensional ordered porous carbon;

[0027] 2) Obtain the three-dimensional ordered porous carbon/Prussian blue nanocomposite by chemical synthesis: (1) Cut the above-mentioned three-dimensional ordered porous carbon into a suitable size and perform acid treatment to obtain a functionalized three-dimensional ordered porous carbon;

[0028] (2) Put 30 mL30 mM FeCl 3 Mix with 1.5 g functionalized three-dimensional ordered porous carbon of the above-mentioned block, ultrasound for 1 h, let FeCl 3 Adsorbed on the surface of the functionalized three-dimensional ordered porous carbon material, after which 30 mL of 30 mM K was added to this mixture 3 Fe(CN) 6 And 2 mL of 38% concentrated hydrochloric acid with a mass fraction of 38%, and let it be heated to reflux for 12 h at 80 ℃ in a round bottom flask, and finally the blue product obtained was washed with ultrapure water to pH=7, and then dried in an oven at 75 ℃ 3 h, the three-dimensional ordered porous carbon/Prussian blue nanocomposite is obtained.

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