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High-yield phosphorous-doped porous carbon material and preparation method thereof

A porous carbon material, phosphorus doping technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of cumbersome preparation process, large energy consumption, etc., and achieve huge application value, high specific surface area, and low cost cheap effect

Active Publication Date: 2018-03-06
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This subsequent doping process makes the preparation process cumbersome and consumes a lot of energy

Method used

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  • High-yield phosphorous-doped porous carbon material and preparation method thereof
  • High-yield phosphorous-doped porous carbon material and preparation method thereof
  • High-yield phosphorous-doped porous carbon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Put 2g of potassium phytate into a tube furnace, and perform high-temperature calcination under a nitrogen atmosphere. The heating rate is 3°C / min, the calcination temperature is 800°C, and the calcination time is 1h. Cool naturally to room temperature to obtain a precursor; The precursor was treated with 1 mole per liter of hydrochloric acid at room temperature for 18 hours, then washed with deionized water, centrifuged several times until neutral, and the precipitate was collected to obtain wet phosphorus-doped porous carbon; the wet phosphorus-doped porous carbon was Under vacuum conditions (vacuum degree less than 5 Pa), drying at 80° C. for 12 hours to obtain the phosphorus-doped porous carbon material provided by the present invention.

[0038] figure 1 is the X-ray powder diffraction curve of the phosphorus-doped porous carbon material prepared in Example 1. It can be seen from the figure that the phosphorus-doped porous carbon material prepared in Example 1 is g...

Embodiment 2

[0044] Prepare phosphorus-doped porous carbon material basically according to the same method as Example 1, the difference is that sodium phytate is used instead of potassium phytate, and the obtained material has the same composition as the material obtained in Example 1; its phosphorus-doped porous carbon produces The ratio is comparable to the material obtained in Example 1.

Embodiment 3

[0046] Prepare phosphorus-doped porous carbon material basically according to the same method as Example 1, the difference is that the high-temperature calcination atmosphere is changed from nitrogen to argon, and the obtained material has the same composition as that obtained in Example 1; its phosphorus-doped porous carbon material The carbon yield was comparable to the material obtained in Example 1.

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Abstract

The invention discloses a high-yield phosphorous-doped porous carbon material and a preparation method thereof. The yield of porous carbon is higher than 60 percent. The preparation method of porous carbon comprises the following steps: under a non-oxidization condition, calcining metal phytate to obtain a precursor; then treating with acid; carrying out water washing; centrifuging and collectingsediment; drying to obtain the phosphorous-doped porous carbon material. The phosphorous-doped porous carbon with high yield is directly prepared through one-step pyrolysis of potassium / sodium phytate; the porous carbon has micropore and mesoporous structures; the preparation method is simple, green and environmentally friendly; the production cost is low and the yield is high; the preparation method is very suitable for large-scale production; the high-yield phosphorous-doped porous carbon material has a huge potential application value in a plurality of fields including water treatment, pollutant adsorption, super-capacitors, fuel cells, lithium-sulfur batteries and the like.

Description

technical field [0001] The invention belongs to the field of carbon materials, and relates to a high-yield phosphorus-doped porous carbon material and a preparation method thereof. Background technique [0002] Porous carbon material is a carbon functional material with developed pore structure. It has excellent properties such as high specific surface area, high chemical stability, strong mechanical properties, high catalytic activity, and adjustable pore structure and pore size, as well as electrical conductivity. , thermal conductivity, low preparation cost, and simple process, are widely used in water treatment, pollutant adsorption, supercapacitors, fuel cells, lithium-sulfur batteries and other fields. [0003] Common synthesis methods for porous carbon materials include catalytic activation, organogel carbonization, self-assembly, and template methods. The catalytic activation method creates pores, and the metal easily enters and stays inside the porous carbon, and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/205C02F1/28H01G11/32H01M4/583H01M4/96
CPCC01P2002/72C01P2002/88C01P2004/03C01P2004/04C01P2006/12C01P2006/14C01P2006/16C02F1/283H01G11/32H01M4/583H01M4/96Y02E60/10Y02E60/13Y02E60/50
Inventor 胡劲松罗浩
Owner INST OF CHEM CHINESE ACAD OF SCI
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