Self-stripping rectorite/carbon nitride nano composite catalytic material and preparation method and application thereof

A technology of nanocomposite and catalytic materials, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of secondary pollution and dependence, reduce water consumption, simplify the preparation process, avoid The effect of mutual reunion

Pending Publication Date: 2021-12-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned technical problems, the present invention adopts a simple self-exfoliation technology to prepare exfoliated nano-rectorite / carbon nitride composite materials, and has a Fenton-like effect, and can activate persulfate under dark light conditions. Effectively degrade organic pollutants, and the preparation method is simple and efficient, which not only solves the heavy dependence of the catalyst on the light source, but also avoids the secondary pollution of metal catalysts

Method used

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  • Self-stripping rectorite/carbon nitride nano composite catalytic material and preparation method and application thereof
  • Self-stripping rectorite/carbon nitride nano composite catalytic material and preparation method and application thereof
  • Self-stripping rectorite/carbon nitride nano composite catalytic material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: Put 1 g of rectorite and 10 g of urea into a mortar, mix and grind for 30 minutes to obtain a urea rectorite composite.

[0028] Step 2: move the urea rectorite compound into a crucible and seal it, put it in a muffle furnace and bake it at 550 degrees for 3 hours, and after natural cooling, collect the reactants obtained to obtain a rectorite / carbon nitride nanocomposite catalytic material .

Embodiment 2

[0030] Step 1: Take 1g of rectorite and 1g of water and put them into a mortar, mix and grind for 5 minutes to fully wet the rectorite and form a hydration layer on the surface and between layers, then add 10g of urea and continue grinding for 10 minutes to make the urea It is easy to enter the interlayer of rectorite that hydrates and expands to obtain a rectorite-urea sandwich compound.

[0031] Step 2: Move the rectorite urea interlayer compound into a crucible and seal it, put it into a muffle furnace and bake it at 550 degrees for 2.5 hours, and after natural cooling, collect the reactants obtained to obtain a rectorite / carbon nitride nanocomposite catalytic material.

Embodiment 3

[0033] Step 1: Take 1g of rectorite and 3g of water and put them into a mortar, mix and grind for 3 minutes to make the rectorite fully wet and form a hydration layer on the surface and between layers, then add 10g of urea and continue grinding for 10 minutes to make the urea It is easy to enter the interlayer of rectorite that hydrates and expands to obtain a rectorite-urea sandwich compound.

[0034] Step 2: Move the rectorite urea interlayer compound into a crucible and seal it, put it in a muffle furnace and bake it at 550 degrees for 3 hours, and after natural cooling, collect the reactants obtained to obtain a self-exfoliating rectorite / carbon nitride nanocomposite catalytic materials.

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Abstract

The invention relates to the technical field of preparation of composite catalytic materials, in particular to a self-stripping rectorite / carbon nitride nano composite catalytic material and a preparation method and application thereof. The preparation method specifically comprises the following steps: mixing rectorite, urea and water, and grinding to obtain a rectorite urea interlayer compound; and carrying out heat treatment on the rectorite urea interlayer compound to obtain the rectorite / carbon nitride composite nanomaterial. The exfoliated nanometer rectorite / carbon nitride composite material is prepared through two steps of wet grinding and intercalation and thermal polymerization, the process is simple, an exfoliated rectorite / carbon nitride nanometer composite is formed, a strong interface interaction is formed between nanometer rectorite sheets and nanometer carbon nitride sheets, active sites of carbon nitride are fully exposed, and the catalytic activity of the material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of preparation of composite catalytic materials, in particular to a self-exfoliating rectorite / carbon nitride nanocomposite catalytic material and its preparation method and application. Background technique [0002] Water pollution is a prominent problem facing the world at present. The production of a large amount of industrial wastewater has brought great damage to the environment and caused serious potential threats to people's health. Catalytic technology is considered to be an effective method for the degradation of water pollutants. However, the commonly used catalytic materials are mostly metal semiconductors, such as zinc oxide, titanium dioxide, etc., which have high production costs and the presence of secondary metals such as metal ion leaching during use. The problem of ion pollution, and this type of catalyst needs light to have a good degradation effect, which has great limitations in actual u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/16B01J27/24C02F1/72C02F101/30
CPCB01J21/16B01J27/24C02F1/725C02F2101/308
Inventor 张乾杨华明唐爱东傅梁杰路畅赵啟行
Owner CENT SOUTH UNIV
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