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A kind of preparation method of graphite-like carbon nitride/mofs catalytic material

A graphite-phase carbon nitride and catalytic material technology, applied in the field of photocatalytic materials, can solve the problems of difficult preparation of photocatalytic materials, limited sunlight absorption, and large equipment requirements, and achieve good photothermal conversion catalytic performance and preparation method The effect of simple and easy operation and low equipment requirements

Active Publication Date: 2022-07-22
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that photocatalysts with light-to-heat conversion ability in the prior art have limited absorption of sunlight, and their performance when used for water evaporation is limited by the performance of the material itself, and the preparation of some photocatalytic materials with complex surface microstructures is difficult and costly. , and there is a large demand for equipment, etc., the present invention provides a method for preparing a graphite-like carbon nitride / MOFs catalytic material

Method used

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  • A kind of preparation method of graphite-like carbon nitride/mofs catalytic material
  • A kind of preparation method of graphite-like carbon nitride/mofs catalytic material
  • A kind of preparation method of graphite-like carbon nitride/mofs catalytic material

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Embodiment 1

[0058] A preparation method of a graphite-like carbon nitride / MOFs catalytic material, the preparation method comprises the following preparation steps:

[0059] 1) Place cyanamide as a carrier in a container, continuously pass inert gas (nitrogen), and the flow rate of the inert gas is 60 mL / min. First, the temperature is raised to 100 °C for uniform preheating for 60 minutes, and then the temperature is raised to 280 °C and kept for 10 minutes;

[0060] 2) Use the inert gas discharged from the preheating stage to heat the uniformly mixed silver acetate and copper acetate to 100°C, then increase the flow rate of the inert gas to 220 mL / min, and load it into the container with the inert gas passed as the carrier gas , so that silver acetate and copper acetate are loaded on cyanamide to form a precursor;

[0061] 3) Prepare a UiO-66 aqueous dispersion with a concentration of 1 mg / L, mix the precursor and UiO-66 aqueous dispersion with a mass-to-volume ratio of 5 mg: 1 L and hea...

Embodiment 2

[0073] A preparation method of a graphite-like carbon nitride / MOFs catalytic material, the preparation method comprises the following preparation steps:

[0074] 1) Place dicyandiamide and urea with a mass ratio of 1:1 as a carrier in a container, continuously pass inert gas (nitrogen), and the flow rate of the inert gas is 180 mL / min. First, the temperature is raised to 200 °C for uniform preheating for 15 minutes, and then The temperature was raised to 350°C and kept for 10min;

[0075] 2) Use the inert gas discharged from the preheating stage to heat the uniformly mixed silver acetate and copper acetate to 200 °C, then increase the flow rate of the inert gas to 400 mL / min, and load it into the container with the inert gas passed as the carrier gas , so that silver acetate and copper acetate are loaded on dicyandiamide and urea to form a precursor;

[0076] 3) Prepare a UiO-66 aqueous dispersion with a concentration of 3 mg / L, mix the precursor and UiO-66 aqueous dispersion...

Embodiment 3

[0088] A preparation method of a graphite-like carbon nitride / MOFs catalytic material, the preparation method comprises the following preparation steps:

[0089] 1) Put melamine as a carrier in a container, continuously pass inert gas (nitrogen), and the flow rate of the inert gas is 150mL / min, first heat up to 200°C for uniform preheating for 30min, then heat up to 320°C and hold for 10min;

[0090] 2) Use the inert gas discharged from the preheating stage to heat the uniformly mixed silver acetate and copper acetate to 200°C, then increase the flow rate of the inert gas to 350mL / min, and load it into the container with the inert gas passed as the carrier gas , so that silver acetate and copper acetate are loaded on melamine to form a precursor;

[0091] 3) Prepare a UiO-66 aqueous dispersion with a concentration of 3 mg / L, mix the precursor and UiO-66 aqueous dispersion with a mass-to-volume ratio of 15 mg: 1 L and heat it to 260 ° C for hydrothermal loading 90min, followed...

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Abstract

The invention relates to the field of photocatalytic materials, in particular to a preparation method of a graphite-like carbon nitride / MOFs catalytic material. The preparation method includes: placing a nitrogen-rich organic substance as a carrier in a container, continuously ventilating, preheating to a load temperature and maintaining; mixing organic silver and organic copper uniformly and heating to its activation temperature, and then using an inert gas as a carrier The gas is loaded into the container, so that silver and copper are loaded on the carrier to form a precursor; the precursor is added to the MOFs dispersion, mixed evenly, hydrothermally loaded, and filtered to obtain a composite precursor; After calcination, the graphite-like carbon nitride / MOFs catalytic material is obtained. The preparation method of the invention is simple and easy to operate, and has low requirements for equipment; the photothermal conversion catalytic material with higher roughness and larger specific surface area can be prepared; the prepared catalytic material has good photothermal conversion catalytic performance, and can have Effective for seawater evaporation.

Description

technical field [0001] The invention relates to the field of photocatalytic materials, in particular to a preparation method of a graphite-like carbon nitride / MOFs catalytic material. Background technique [0002] About three-quarters of the earth is covered with water, but most of it is seawater. Freshwater resources closely related to human life are extremely scarce. Seawater desalination is one of the important ways to solve the problem of freshwater resources in the future. Traditional distillation And the reverse osmosis membrane process is the most widely studied and applied seawater desalination technology. Inspired by the natural water cycle process, the use of sunlight to drive water evaporation to obtain clean fresh water has received extensive attention. [0003] Recently, the research on seawater distillation through photothermal conversion is very hot. The technology is expected to be used as an emergency measure in conditions such as shipwrecks, survival in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J31/22B01J27/24C02F1/04C02F103/08
CPCB01J31/28B01J31/1691B01J27/24B01J35/004C02F1/043B01J2531/48B01J2531/0216C02F2103/08C02F2305/10
Inventor 周英棠
Owner ZHEJIANG OCEAN UNIV