Preparation method of transition metal phosphide MoP

Abstract

The invention discloses a preparation method of transition metal phosphide MoP. The preparation method includes 1), weighing (NH4)6Mo7024 4H2O and NH4H2PO5 to be ground in a mortar to realize solid phase reaction according to a molar ratio of 1:14, continuing grinding until mixture is dry, sintering obtained powder at the temperature of 500 DEG C for 5 hours and obtaining a precursor; and 2), grinding the precursor and reducing agent in the mortar according to a certain molar ratio, mixing the precursor with the reducing agent uniformly, performing reaction under argon shield at the temperature ranging from 500 DEG C to 600 DEG C for 30 minutes to 60 minutes, finely grinding an obtained product, washing the finely ground product by the aid of distilled water and anhydrous ethanol for three times, drying the washed product in a vacuum condition at the temperature of 60 DEG C for 12 hours, and obtaining a product MoP. The preparation method has the advantages that main raw materials are rich in source, prices are cheap, cost is low, the synthesis method is novel, process is simple, complicated steps with conditions of high temperature and high pressure are omitted, a preparation flow is simplified, energy consumption is lowered, simultaneously, environmental pollution is prevented in a preparation procedure, and the preparation method is applicable to large-scale production.

Description

technical field [0001] The invention relates to a method for preparing transition metal phosphide, more specifically, relates to a method for preparing transition metal phosphide MoP. Background technique [0002] Transition metal phosphides are an important class of multifunctional materials, and their applications in catalysis and magnetism have attracted wide attention. Among them, MoP has been widely studied and applied as a low-cost and high-performance phosphide. However, the existing methods for synthesizing MoP have the following disadvantages: [0003] 1. Using organophosphorus or phosphine as a phosphorus source is highly toxic; [0004] 2. Hydrothermal synthesis cannot prepare supported phosphides, and the obtained products have poor catalytic activity; [0005] 3. The direct smelting method requires high temperature and a large amount of excess elemental phosphorus (due to volatilization), and the crystal phase of the obtained product is not easy to control; ...

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Problems solved by technology

[0003] 1. Using organophosphorus or phosphine as a phosphorus source is highly toxic;

[0004] 2. Hydrothermal synthesis cannot prepare supported phosphides, and the obtained products have poor catalytic activity;

[0005] 3. The direct smelting method requires high temperature and a large amount of excess elemental phosphorus (due to volatilization), and the crystal phase of the obtained product is not easy to control;

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