Preparation method of a sawtooth-like nickel-cobalt-iron-like Prussian blue sintered oxide nanomaterial

A technology of Prussian blue-like and nanomaterials is applied in the field of preparation of zigzag-like Prussian blue-like sintered oxide nanomaterials, which can solve problems such as bisphenol A pollution, and achieve the effects of increasing surface area, simple process conditions, and easy popularization and application.

Active Publication Date: 2021-03-02
FUZHOU UNIV
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Problems solved by technology

The present invention uses nickel-cobalt-iron-like Prussian blue (NiCoFe-PBA) as a template to obtain zigzag-like Prussian blue ("Z"-PBA) through ammonia water corrosion, which enriches the complex morphology and structure design of nano-MOFs; and then heat treatment The obtained mixed oxide nanomaterials can well maintain the structure of the corroded "Z"-PBA, and can effectively catalyze the degradation of bisphenol A, thereby solving the pollution problem caused by bisphenol A

Method used

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  • Preparation method of a sawtooth-like nickel-cobalt-iron-like Prussian blue sintered oxide nanomaterial
  • Preparation method of a sawtooth-like nickel-cobalt-iron-like Prussian blue sintered oxide nanomaterial
  • Preparation method of a sawtooth-like nickel-cobalt-iron-like Prussian blue sintered oxide nanomaterial

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Embodiment 1

[0036] A method for preparing a sawtooth-like nickel-cobalt-iron-like Prussian blue sintered oxide nanomaterial, comprising the following steps:

[0037] (1) Preparation of NiCoFe-PBA precursor:

[0038] Using potassium ferricyanide, potassium cobaltcyanide, trisodium citrate trihydrate and nickel nitrate hexahydrate as raw materials, NiCoFe-PBA was prepared by hydrothermal synthesis;

[0039] (2) Preparation of "Z"-PBA nanomaterials:

[0040] Uniformly disperse the NiCoFe-PBA obtained in (1) into 10 ml of ethanol and stir until completely dispersed to obtain a mixed solution; then slowly pour the ammonia solution into the mixed solution and stir for 1 h; then centrifuge the reaction solution , and washed; put the washed samples in an oven at 70 °C for 12 h for drying to obtain “Z”-PBA nanomaterials.

[0041] (3) Preparation of "Z"-Ox nanomaterials:

[0042] The "Z"-PBA nanomaterial sample obtained in step (2) was put into a muffle furnace, kept at 350 °C for 1.5 h, and the...

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Abstract

The invention provides a method for preparing a sawtooth-like nickel-cobalt-iron-like Prussian blue sintered oxide nanometer material, which belongs to the technical field of materials. The present invention synthesizes the nano-nickel-cobalt-iron Prussian blue precursor of the cubic structure with nickel nitrate hexahydrate, trisodium citrate trihydrate, potassium ferricyanide and potassium cobalt cyanide, and then uses ammonia solution to corrode and then centrifugally separates and washes the sample. , after drying, a zigzag-like nickel-cobalt-iron-like Prussian blue nanomaterial is obtained, which is sintered to obtain “Z”‑O x nanomaterials. "Z"‑O x Nanomaterials can effectively catalyze peroxymonosulfate to generate hydroxyl radicals and sulfate radicals, thereby degrading bisphenol A. The invention determines the location of corrosion by uneven distribution of metal coordination bonds in the precursor, forming anisotropic corrosion, opening up a new way for fine-tuning the structure and properties of MOF materials, and the method has the advantages of simple operation, short preparation period, High economic benefit and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a sawtooth-like Prussian blue sintered oxide nanometer material. Background technique [0002] The chemical etching-based strategy opens up new avenues for the preparation of metal-organic frameworks (MOFs) with novel morphologies. The presence of etchant (such as H+ or OH-) capable of destroying the metal / organic linker of MOFs can make MOF precursors into crystals with tunable spherical, cubic or tetrahedral morphology. Due to the differential reactions between the interior and facets of MOF precursor crystals, sometimes, nano-MOFs (such as zeolite imidazolate framework materials (ZIF), Prussian blue-like (PBA)) can obtain hollow structures, and further modulate pre-synthesized MOFs The structure of can create MOF of higher complexity. [0003] Despite these advances, it remains challenging to fabricate MOFs of higher complexity. Taking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/00B82Y40/00B01J23/755C02F1/72C02F101/34
CPCB01J23/002B01J23/755B01J2523/00B82Y40/00C01G53/006C01P2002/72C01P2002/85C01P2004/03C02F1/725C02F2101/345B01J2523/842B01J2523/845B01J2523/847
Inventor 于岩庄赞勇叶嘉华
Owner FUZHOU UNIV
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