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Preparation method and application of two-dimensional flaky manganese oxide/mesoporous carbon catalyst based on Mn-MOF

A catalyst and mesoporous carbon technology, which is applied in the field of preparation of two-dimensional sheet-like MnOx/mesoporous carbon catalysts, can solve the problems of complex preparation process and achieve the effects of simple preparation process, efficient removal, and high specific surface area

Active Publication Date: 2022-02-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most manganese / carbon composites are synthesized through post-synthetic modification strategies, and the preparation process is complicated

Method used

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  • Preparation method and application of two-dimensional flaky manganese oxide/mesoporous carbon catalyst based on Mn-MOF
  • Preparation method and application of two-dimensional flaky manganese oxide/mesoporous carbon catalyst based on Mn-MOF
  • Preparation method and application of two-dimensional flaky manganese oxide/mesoporous carbon catalyst based on Mn-MOF

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A certain amount of Mn(NO 3 ) 2 and H 2BDC was added to an appropriate amount of DMF solvent, and the water bath was ultrasonicated for 10 minutes to dissolve the precursor solution; the above two solutions were mixed with a molar ratio of 1:1, and the water bath was ultrasonicated for 5 minutes, and then magnetically stirred for 30 minutes to make the system evenly mixed; the precursor solution Transfer to a stainless steel reaction kettle with a polytetrafluoroethylene liner, perform a hydrothermal reaction at 140°C in an oven for 12 hours, centrifuge, wash with DMF and methanol three times, and dry in vacuum to obtain Mn-MOF; The Mn-MOF was placed in a porcelain boat, placed in a tube furnace, and calcined at 500°C for 3h under an inert atmosphere of argon, with a heating rate of 5°C / min, to obtain the two-dimensional sheet-like MnO x @C Catalyst.

Embodiment 2

[0044] Change the calcination temperature of the tube furnace in Example 1 to 600° C., and other operations are the same as in Example 1.

Embodiment 3

[0046] Change the calcination temperature of the tube furnace in Example 1 to 700° C., and other operations are the same as in Example 1.

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Abstract

The invention discloses a preparation method and application of two-dimensional flaky MnOx / mesoporous carbon based on Mn-MOF, and relates to the technical field of advanced oxidation for water pollution control. The preparation method comprises the following steps: dissolving a manganese salt and a ligand in a solvent to obtain a precursor solution, carrying out a hydrothermal reaction on the precursor solution to obtain Mn-MOF, and calcining the Mn-MOF in an inert atmosphere to obtain the two-dimensional flaky MnOx / mesoporous carbon catalyst. The manganese-carbon composite material with manganese oxides uniformly distributed on the carbon carrier can be simply and rapidly synthesized, pollutants in wastewater can be catalyzed and degraded by PMS advanced oxidation, the removal rate of ABEE in simulated wastewater within 10 min can reach 98.02%, the performance of the manganese-carbon composite material is only reduced by 6% after four times of circulation, and the manganese-carbon composite material has good catalytic activity and stability. The catalyst is simple and convenient in preparation process and low in raw material cost, and has a potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of advanced oxidation, in particular to a two-dimensional sheet-like MnO based on Mn-MOF x Preparation method and application of mesoporous carbon catalyst. Background technique [0002] Pharmaceuticals and personal care products (PPCPs), as an emerging pollutant due to their wide range of applications, large emissions, and poor biodegradability, have received extensive attention in recent years. Therefore, the development of new water treatment technology to degrade PPCPs has become an urgent problem in the environmental field. [0003] Advanced Oxidation Processes (AOPs) are capable of removing a large number of pollutants, especially those refractory organic pollutants, degrading them into harmless or low-toxic small compounds, and even completely mineralizing them into CO 2 、H 2 O. Compared with the Fenton reaction dominated by hydroxyl radicals (OH), sulfate radicals (SO 4 ·- )-based advanced oxid...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J37/10B01J37/08B01J35/10C02F1/72C02F101/30C02F101/38C02F101/34
CPCB01J23/34B01J37/10B01J37/086C02F1/725C02F2101/30C02F2101/38C02F2101/34B01J35/60Y02W10/37
Inventor 史惠祥赵悦王河
Owner ZHEJIANG UNIV