Nitrogen-sulfur double-doped porous carbon material catalyst and preparation method thereof

A porous carbon material, double-doped technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low doping amount, small specific surface area of ​​catalyst, etc., and achieve simple preparation process , Ease of large-scale production, and the effect of improving degradation efficiency

Pending Publication Date: 2021-11-16
WENZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems of low doping amount and small specific surface area of ​​the catalyst in the preparation method of the carbon catalyst in the prior art, the present invention proposes a nitrogen-sulfur double-doped porous carbon material catalyst and its preparation method. By adding glucose as a carbon source, the cysteine Amino acid is used as nitro

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  • Nitrogen-sulfur double-doped porous carbon material catalyst and preparation method thereof
  • Nitrogen-sulfur double-doped porous carbon material catalyst and preparation method thereof
  • Nitrogen-sulfur double-doped porous carbon material catalyst and preparation method thereof

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Embodiment 1

[0040] A nitrogen-sulfur double-doped porous carbon material catalyst in this embodiment, the porous carbon material includes a nitrogen-sulfur source and a carbon source with a mass ratio of 1% to 50%, the carbon source is glucose, and the nitrogen The sulfur source is cysteine, and its raw material is green and pollution-free, easy to purchase, and low in cost; the specific surface area of ​​the nitrogen-sulfur double-doped porous carbon material is 1000-2000m 2 / g, it provides abundant active sites for the adsorption and degradation of biological organic pollutants, which is beneficial to improve the catalytic activity of the catalyst; the nitrogen element is covalently bonded to the carbon in the porous carbon material by pyrrole nitrogen, pyridine nitrogen and graphite nitrogen, Sulfur is covalently bonded to carbon in porous carbon materials in the form of thiophene sulfur (C-S-C) and sulfur oxide (C-SOX-C). The co-doping of nitrogen and sulfur not only ensures the catal...

Embodiment 2

[0045] A nitrogen-sulfur double-doped porous carbon material catalyst in this embodiment has the same basic structure as that in Example 1, the difference and improvement are that the nitrogen and sulfur elements are evenly distributed on the surface of the porous carbon material, and the pore diameter of the porous carbon material is The nitrogen-sulfur double-doped porous carbon material is in the shape of black powder. Compared with the undoped porous carbon material (large pores, the pore diameter is 122nm), the nitrogen-sulfur double-doped porous carbon material has more The rich pore structure provides more adsorption and reactive sites and electron migration channels for the adsorption and degradation of antibiotics and other organic substances, thereby improving the degradation efficiency of antibiotics and other organic substances.

Embodiment 3

[0047] The preparation method of a nitrogen-sulfur double-doped porous carbon material catalyst in this embodiment has the same basic structure as that in Embodiment 2, the difference and improvement are that it includes the following steps:

[0048] Step 1: Weigh a certain amount of carbon source, nitrogen source and sulfur source, mix and disperse in the aqueous solution, then transfer to the hydrothermal reactor container, raise to a certain temperature and keep it for a certain time to obtain the carbon, nitrogen, sulfur carbon materials;

[0049] Step 2. Put the synthesized carbon material containing carbon, nitrogen, and sulfur into a quartz glass container, pass in an inert gas as a protective gas, calcinate at high temperature for a certain period of time, and grind and pulverize after natural cooling to obtain a nitrogen-sulfur double-doped carbonized material;

[0050] Step 3. Put the synthesized nitrogen-sulfur double-doped carbonized material into a custom-made cru...

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Abstract

The invention discloses a nitrogen-sulfur double-doped porous carbon material catalyst and a preparation method thereof, and relates to the technical field of carbon catalytic preparation. According to the nitrogen and sulfur double-doped porous carbon material catalyst and the preparation method thereof, the porous carbon material comprises a nitrogen and sulfur source and a carbon source with the mass ratio of 1%-50%, the carbon source is glucose, the nitrogen and sulfur source is cysteine, and a non-metal nitrogen and sulfur double-doped porous carbon material is prepared through a hydrothermal method and a high-temperature alkali activation method. The co-doping of nitrogen and sulfur not only ensures the catalytic stability of the catalyst, but also promotes the adsorption and catalytic degradation of antibiotic organic pollutants through the synergistic effect of nitrogen and sulfur, and the catalytic performance is better than that of a single element doped carbon material. The raw materials for preparing the catalyst are green, pollution-free and easy to purchase, the cost is low, the preparation process is simple, large-scale production is easy, and the catalyst can be applied to the fields of environmental organic polluted water treatment, drinking water deep purification treatment and the like.

Description

technical field [0001] The invention relates to the technical field of carbon catalytic preparation, in particular to a nitrogen-sulfur double-doped porous carbon material catalyst and a preparation method thereof. Background technique [0002] Pharmaceuticals and personal care products (referred to as PPCPs) mainly include drugs (antibiotics, hormones, etc.) and personal care products (antibacterials, disinfectants, and preservatives, etc.). Most PPCPs are water-soluble, complex in structure, can inhibit or affect the function of organisms at low concentrations, and belong to persistent refractory organic compounds. Since PPCPs are refractory organic substances, it is difficult to completely remove them by traditional physical methods (such as adsorption, sedimentation, etc.) and biological methods (such as activated sludge method). Human health and other animals and plants pose certain ecological risks. Therefore, PPCPs pollution has gradually become the focus of global ...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/10B01J37/10A62D3/38A62D101/20
CPCB01J27/24B01J35/1028B01J35/1061B01J37/10A62D3/38A62D2101/20
Inventor 刘仁兰安宁赵敏郑向勇刘隽黄先锋贝克金展王奇李军
Owner WENZHOU UNIVERSITY
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