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Preparation method of N-doped porous carbon loaded Fe2O3 composite material

A nitrogen-doped porous carbon, composite material technology, applied in nanotechnology for materials and surface science, carbon compounds, chemical instruments and methods, etc., can solve the problem of high manufacturing cost of carrier materials, unstable nanomaterials, skeleton materials The problems such as the collapse and deformation of the channel, to achieve the effect of uniform size, excellent channel structure, and improved dispersion and stability

Inactive Publication Date: 2018-05-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The nitrogen-doped porous carbon loaded Fe 2 o 3 The composite material preparation method solves the problem that the manufacturing cost of the carrier material is too high, and the skeleton material may undergo channel collapse and deformation during the synthesis process, and Fe 2 o 3 Key technical issues affecting the application performance of such composite materials such as the instability of nanomaterials

Method used

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  • Preparation method of N-doped porous carbon loaded Fe2O3 composite material
  • Preparation method of N-doped porous carbon loaded Fe2O3 composite material
  • Preparation method of N-doped porous carbon loaded Fe2O3 composite material

Examples

Experimental program
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Embodiment 1

[0025] (1) Preparation of poly-4-vinylpyridine / absolute ethanol solution: at room temperature, take 0.21 g of poly-4-vinylpyridine (molecular weight 60,000) and add it to 50 mL of absolute ethanol, stir it magnetically to dissolve it, and obtain 4- Poly(4-vinylpyridine) / absolute ethanol solution with a vinylpyridine monomer concentration of 0.04mol / L.

[0026] (2) Preparation of FeCl 3 ·6H 2 O / dehydrated ethanol solution: take 1.08 g FeCl 3 ·6H 2 O was added to 50 mL of absolute ethanol, and magnetically stirred to dissolve it to obtain FeCl with a concentration of 0.08 mol / L 3 ·6H 2 O / absolute ethanol solution.

[0027] (3) Preparation of cross-linked complex precursor: FeCl 3 ·6H 2 Add O / dehydrated ethanol solution to poly-4-vinylpyridine / dehydrated ethanol solution, molar ratio (Fe 3+ : 4-vinylpyridine monomer = 2:1); continue to stir for 12 h to form a stable complex precipitation, then distill under reduced pressure at 60°C and vacuum dry at 120°C for 12 h to obt...

Embodiment 2

[0031]The experimental procedure of embodiment 2 is the same as that of embodiment 1, but the FeCl prepared in step (2) 3 ·6H 2 The concentration of O / absolute ethanol solution is 0.16 mol / L, and Fe in the cross-linked complex precursor prepared in step (3) 3+ The molar ratio to 4-vinylpyridine monomer is 4:1.

Embodiment 3

[0033] The experimental procedure of embodiment 3 is the same as that of embodiment 1, but the FeCl prepared in step (2) 3 ·6H 2 The concentration of O / dehydrated ethanol solution is 0.04 mol / L, and the Fe in the cross-linked complex precursor prepared in step (3) 3+ The molar ratio to 4-vinylpyridine monomer is 1:1.

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Abstract

The invention relates to an N-doped porous carbon loaded Fe2O3 composite material and a preparation method thereof. The composite material is prepared in the following steps: preparing a crosslinkingcomplex of 4-vinylpyridine (a monomer or a polymer) and FeCl3.6H2O; putting the crosslinking complex into a tube furnace for high-temperature carbonization-activation; naturally cooling to obtain a carbonization product; finally, taking out the carbonization product, and washing and filtering the carbonization product, so as to obtain the N-doped porous carbon loaded Fe2O3 composite material. According to the simple method, Fe2O3 nanoclusters are embedded into a N-doped porous carbon skeleton, so that the dispersity and the stability of the Fe2O3 nanoclusters can be effectively improved; an N-doped porous carbon carrier is large in specific surface area and excellent in porous structure, and the reactivity and the biocompatibility of the Fe2O3 nanoclusters can be effectively improved due to the doping of nitrogen atoms; the loaded Fe2O3 nanoclusters are uniform in dimension and controllable in size. The N-doped porous carbon loaded Fe2O3 composite material has extensive application prospect in the fields of magnetism, sensing, energy storage and conversion, catalyzing and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials, in particular, relates to a nitrogen-doped porous carbon loaded Fe 2 o 3 Methods of preparation of composite materials. Background technique [0002] Among many metal oxides, Fe 2 o 3 Nanomaterials have important applications in the fields of information storage, sensors, catalysis, energy storage and biomedicine due to their excellent chemical stability, outstanding catalytic activity, excellent mass specific capacitance, low preparation cost, non-toxic and non-polluting. . But Fe 2 o 3 Nanomaterials are prone to agglomeration due to their high surface energy, which leads to a gradual decrease in activity or even inactivation during application. To solve this problem Fe 2 o 3 During the use of nanomaterials, the following methods are usually used to maintain their dispersion: (1) adding a dispersant; (2) adding Fe 2 o 3 Coating; (3) Fe 2 o 3 Embedded in a specific skele...

Claims

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Application Information

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IPC IPC(8): C01B32/336C01G49/06B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G49/06C01P2004/80
Inventor 杨正龙付宁
Owner TONGJI UNIV
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