Preparation method of sawtooth-like nickel-cobalt-iron PBA (prussian blue analogue) sintered oxide nanomaterial

A technology similar to Prussian blue and nanomaterials, which is applied in the field of preparation of zigzag-like Prussian blue-like sintered oxide nanomaterials, can solve problems such as bisphenol A pollution, and achieve the effects of increased surface area, high efficiency, and simple process conditions

Active Publication Date: 2019-03-08
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 sawtooth-like nickel-cobalt-iron PBA (prussian blue analogue) sintered oxide nanomaterial
  • Preparation method of sawtooth-like nickel-cobalt-iron PBA (prussian blue analogue) sintered oxide nanomaterial
  • Preparation method of sawtooth-like nickel-cobalt-iron PBA (prussian blue analogue) 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 preparation method of a sawtooth-like nickel-cobalt-iron PBA (prussian blue analogue) sintered oxide nanomaterial, and belongs to the technical field of materials. The preparation method comprises the following steps: a cubic-structured nanometer nickel-cobalt-iron PBA precursor is synthesized from nickel nitrate hexahydrate, trisodium citrate trihydrate, potassium ferricyanide and potassium hexacyanocobaltate(III); an ammonia water solution is used for corrosion, centrifugal separation is performed, a sample is washed and dried, a sawtooth-like nickel-cobalt-iron PBAnanomaterial is obtained and sintered, and a 'Z'-Ox nanomaterial is obtained. The 'Z'-Ox nanomaterial can effectively catalyze peroxymonosulfate to generate hydroxyl radicals and sulfate radicals, andaccordingly, bisphenol A is degraded. The position of corrosion is determined by uneven distribution of metal coordination bonds in the precursor, anisotropic corrosion is formed, and a new way is opened up for fine adjustment of the structure and properties of an MOF material; the method has the characteristics of being simple to operate, short in preparation period, high in economic benefit andsuitable 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 ...

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Application Information

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Patent Type & Authority Applications(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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