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Preparation method and application of graphite-phase carbon nitride-based heterogeneous Fenton-like catalyst

A phase carbon nitride-based, catalyst technology, used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as product instability and complex production, and achieve a wide range of pH application and repeatability. High utilization rate and stable treatment effect

Inactive Publication Date: 2018-08-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Synthesis of metal ion doped g-C in existing literature reports 3 N 4 Most of the methods are dissolving-drying-firing, the production is slightly complicated, and the product is unstable. After firing, g-C 3 N 4 and metal oxides were clearly delaminated, and metal ions were not successfully intercalated into g-C 3 N 4 The situation in the structure, its preparation method can be further improved

Method used

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  • Preparation method and application of graphite-phase carbon nitride-based heterogeneous Fenton-like catalyst
  • Preparation method and application of graphite-phase carbon nitride-based heterogeneous Fenton-like catalyst
  • Preparation method and application of graphite-phase carbon nitride-based heterogeneous Fenton-like catalyst

Examples

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Effect test

Embodiment 1

[0026] Example 1: Manganese doped g-C 3 N 4 Catalytic degradation of ACT by heterogeneous catalyst

[0027](1) Weigh and mix the corresponding substances according to the ratio of 0.5mmol manganese dichloride + 6g urea;

[0028] (2) Add the above mixture into a 50ml ceramic crucible, wrap the mouth of the pot with aluminum foil, cover it and put it into a muffle furnace for calcination. First raise the temperature to 133°C at 20°C / min, stay for 10 minutes, then raise the temperature to 500°C at 20°C, and then keep the temperature at 500°C for 2.5h;

[0029] (3) After the calcination is completed, cool naturally to room temperature, take out and grind to obtain manganese-doped g-C 3 N 4 composite material.

[0030] (4) The Mn-g-C prepared above 3 N 4 The composite material was added to ACT wastewater with an initial pH of 6.5, in which the concentration of PMS was 0.6g / L, the concentration of ACT was 20mg / L, the dosage of the material was 50mg / L, and the stirring rate wa...

Embodiment 2

[0031] Example 2: Iron-doped g-C 3 N 4 Catalytic degradation of ACT by heterogeneous catalyst

[0032] Preparation of Fe-g-C with Ferric Chloride as Precursor 3 N 4 Composite materials, according to the ratio of 0.5mmol ferric chloride + 6g urea to weigh the corresponding substances, other conditions are the same as in Example 1. Its 60min removal rate of ACT was 76%.

Embodiment 3

[0033] Example 3: Catalytic degradation of ACT by copper-doped g-C3N4 heterogeneous catalyst

[0034] Preparation of Cu-g-C with copper dichloride as precursor 3 N 4 Composite materials, according to the ratio of 0.5mmol copper dichloride + 6g urea to weigh the corresponding substances, other conditions are the same as in Example 1. Its 60min removal rate of ACT was 31%.

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Abstract

The invention relates to a preparation method and application of a graphite-phase carbon nitride-based heterogeneous Fenton-like catalyst. The graphite-phase carbon nitride-based heterogeneous Fentoncatalyst is a metal-doped g-C3N4 composite material. The preparation method comprises the following steps: proportionally mixing metal salt and urea without any pretreatment to the metal salt and theurea, adding an obtained mixture into a ceramic crucible, wrapping the mouth of the crucible with aluminum foil, covering with a crucible cover, putting into a muffle furnace, and calcinating in a programmed heating manner without need of any inert protective gas during calcination; and naturally cooling a calcinated product to room temperature, then taking out and grinding to obtain the needed material. The graphite-phase carbon nitride-based heterogeneous Fenton catalyst is applied to organic wastewater treatment. By a one-step synthesis method of the metal-doped g-C3N4 Fenton catalyst, various precursors are not required to be dissolved in advance and then dried by freezing or evaporating so as to be uniformly mixed, and a metal element can be uniformly doped only by controlling a heating program, so that the obtained material has relatively high ability of catalyzing PMS to degrade PPCPs pollutants in water.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to a preparation method and application of a graphite-phase carbon nitride-based heterogeneous Fenton-like catalyst. The composite material can be used to catalyze permonosulfate (PMS) to degrade difficult Biodegradable organic matter. Background technique [0002] In recent decades, environmental pollution caused by non-biodegradable organics has become an extremely challenging technical problem. More and more emerging environmental pollutants such as drugs and their metabolites, endocrine disruptors, disinfection by-products and personal care products have entered the human living environment. Most of these emerging environmental pollutants are toxic and difficult to biodegrade, and it is difficult to remove them efficiently by traditional treatment methods. Therefore, it is necessary to study more efficient treatment methods to improve the removal effect of...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/08C02F1/72C02F101/30C02F101/34C02F101/36
CPCB01J27/24B01J37/084C02F1/725C02F2101/30C02F2101/345C02F2101/36
Inventor 樊金红秦贺贺
Owner TONGJI UNIV
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