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Preparation method and application of porous carbon nitride/europium vanadate Z-type photocatalyst

A technology of photocatalyst and porous carbon nitride, which is applied in the field of photocatalysis, can solve the problems of complex photocatalyst preparation methods, high equipment requirements, general stability and catalytic activity, and achieve high photogenerated electron-hole separation efficiency and equipment The effect of low requirements and easy control of experimental conditions

Inactive Publication Date: 2020-08-11
GUIZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to solve the problems of complex preparation methods of existing photocatalysts, high requirements for equipment, and relatively general stability and catalytic activity

Method used

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  • Preparation method and application of porous carbon nitride/europium vanadate Z-type photocatalyst
  • Preparation method and application of porous carbon nitride/europium vanadate Z-type photocatalyst

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Embodiment 1

[0021] A porous carbon nitride / europium vanadate Z-type photocatalyst, the porous carbon nitride / europium vanadate Z-type photocatalyst is based on micron-scale porous lamellar graphite phase carbon nitride, and the porous graphite phase nitrogen The carbonized carbon surface is modified with europium vanadate nanoparticles.

[0022] In the present embodiment, in the porous carbon nitride / europium vanadate Z-type photocatalyst, the mass percentage of porous graphite phase carbon nitride is 95%, the mass percentage of europium vanadate is 5%, and europium nitrate hexahydrate The molar ratio to ammonium metavanadate is 1:2.

[0023] Provide a kind of preparation method of the porous carbon nitride / europium vanadate Z type photocatalyst of above-mentioned present embodiment simultaneously, comprise the following steps:

[0024] 1. Mix 10g of dicyandiamide and 5g of ammonium chloride and ultrasonically dissolve it in 100g of ethanol, freeze-dry for 24 hours, place it in a muffle ...

Embodiment 2

[0027] A porous carbon nitride / europium vanadate Z-type photocatalyst, the porous carbon nitride / europium vanadate Z-type photocatalyst is based on micron-scale porous lamellar graphite phase carbon nitride, and the porous graphite phase nitrogen The carbonized carbon surface is modified with europium vanadate nanoparticles.

[0028] In the present embodiment, in the porous carbon nitride / europium vanadate Z-type photocatalyst, the mass percentage of porous graphite phase carbon nitride is 90%, the mass percentage of europium vanadate is 10%, and europium nitrate hexahydrate The molar ratio to ammonium metavanadate is 2:1.

[0029] Provide a kind of preparation method of the porous carbon nitride / europium vanadate Z type photocatalyst of above-mentioned present embodiment simultaneously, comprise the following steps:

[0030] 1. Mix 5g of dicyandiamide and 10g of ammonium chloride and ultrasonically dissolve it in 85g of ethanol, freeze-dry for 30h, place it in a muffle furna...

Embodiment 3

[0033] A porous carbon nitride / europium vanadate Z-type photocatalyst, the porous carbon nitride / europium vanadate Z-type photocatalyst is based on micron-scale porous lamellar graphite phase carbon nitride, and the porous graphite phase nitrogen The carbonized carbon surface is modified with europium vanadate nanoparticles.

[0034] In the present embodiment, in the porous carbon nitride / europium vanadate Z-type photocatalyst, the mass percentage of porous graphite phase carbon nitride is 80%, the mass percentage of europium vanadate is 20%, and europium nitrate hexahydrate The molar ratio to ammonium metavanadate is 1:1.

[0035] Provide a kind of preparation method of the porous carbon nitride / europium vanadate Z type photocatalyst of above-mentioned present embodiment simultaneously, comprise the following steps:

[0036] 1. Mix 10g of dicyandiamide and 10g of ammonium chloride and ultrasonically dissolve it in 100g of ethanol, freeze-dry for 36 hours, place it in a muffl...

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Abstract

The invention provides a preparation method and application of a porous carbon nitride / europium vanadate Z-type photocatalyst. The preparation method comprises the following steps: mixing dicyandiamide and ammonium chloride and ultrasonically dissolving in ethanol; preparing a porous graphite phase carbon nitride from a mixture obtained by freeze-drying and calcining, ultrasonically dispersing theporous graphite phase carbon nitride, europium nitrate hexahydrate and ammonium metavanadate in ethanol, freeze-drying to obtain a photocatalyst precursor mixture, and calcining in a muffle furnace to obtain the porous carbon nitride / europium vanadate Z-type photocatalyst. The obtained photocatalyst has the advantages of strong visible light response capability, good stability, high photocatalytic activity and the like, the preparation method is simple, the equipment requirement is low, and the experiment condition is easy to control. The porous carbon nitride / europium vanadate Z-type photocatalyst is used for photocatalytic degradation of antibiotics in water, has the advantages of high degradation efficiency, no secondary pollution, simple operation and the like, and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and relates to a preparation method and application of a porous carbon nitride / europium vanadate Z-type photocatalyst. In particular, it relates to a method for removing antibiotics in water by using porous carbon nitride / europium vanadate Z-type photocatalyst. Background technique [0002] With the development of society, the problem of environmental pollution has become increasingly prominent. Among them, antibiotic pollution not only seriously affects the environment, but also easily leads to ecological risks. Photocatalytic water treatment technology is simple and easy to operate. Photocatalytic degradation of antibiotics is considered to be an effective method that is environmentally friendly and free from secondary pollution, and it has shown good application prospects in the treatment of antibiotic pollutants. Graphite phase carbon nitride is a non-metal visible light catalyst, wh...

Claims

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Application Information

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IPC IPC(8): B01J23/22B01J27/24B01J35/00C02F1/30C02F101/38C02F101/34C02F103/34
CPCB01J27/24B01J23/22C02F1/30C02F2101/38C02F2101/34C02F2103/343C02F2305/10B01J35/39
Inventor 冯建李蓉冯广卫夏明燕王丽冉霞
Owner GUIZHOU MEDICAL UNIV
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