Nitrogen-phosphorus-sulfur co-doped porous carbon loaded metal phosphide nano composite material as well as preparation method and application thereof

Abstract

The invention discloses a nitrogen-phosphorus-sulfur co-doped porous carbon loaded metal phosphide nano composite material as well as a preparation method and application thereof. The preparation method of the material comprises the following steps: S1, uniformly mixing a metal salt, a carbon source compound and a swelling agent, and pyrolyzing in an inert gas atmosphere to obtain M-g-C3N4; S2, dispersing the M-g-C3N4 in a solvent to obtain a suspension A, then dropwise adding a mixed solution B in which phosphonitrilic chloride trimer and 4,4-dihydroxy diphenyl sulfone are dissolved into thesuspension A, and carrying out a mixing reaction; dropwise adding an alkaline auxiliary agent, uniformly mixing and reacting, and after the reaction is finished, separating to obtain M-g-C3N4@PZS; andS3, performing high-temperature pyrolysis on the M-g-C3N4@PZS in an inert gas atmosphere to obtain the nitrogen-phosphorus-sulfur co-doped porous carbon loaded metal phosphide nano composite materialMPx-NPS-C. The material is simple to prepare and high in general applicability; and the prepared material shows excellent performance in catalytically activating H2O2, PMS and PS to degrade complex organic compounds, and the application of the metal phosphide material in advanced oxidation water treatment is broadened.

Description

technical field

[0001] The invention relates to the technical field of water pollution treatment, and more specifically relates to a metal phosphide nanocomposite material supported by nitrogen, phosphorus and sulfur co-doped porous carbon and its preparation method and application. Background technique

[0002] With the continuous prosperity and development of the urban chemical industry, industrial wastewater pollution has gradually become a global environmental problem. The composition of industrial wastewater is complex, and the refractory organic matter has a complex molecular structure and strong chemical stability, which can cause persistent pollution. Traditional urban sewage biochemical treatment systems cannot achieve complete purification effects. Therefore, exploring more effective water treatment methods has profound significance for alleviating the current water pollution problems. Among many emerging water treatment processes, (like) Fenton technology shows b...

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