Monolayer molybdenum disulfide-cobalt ferrite nanocomposite material as well as preparation method and application thereof

A technology of single-layer molybdenum disulfide and nanocomposite materials, applied in the direction of nuclear magnetic resonance/magnetic resonance imaging contrast agents, inorganic non-effective components, etc., can solve the problems of large specific surface area and rare research reports, and achieve low cost and energy consumption Small, high-yield effects

Active Publication Date: 2017-01-25
HEBEI UNIV OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, single-layer molybdenum disulfide has a unique sheet structure, large specific surface area and remarkable electronic properties, showing broad application space in catalysts, field-effect transistors and lithium-ion batteries, but research reports in the field of biomedicine still relatively rare

Method used

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  • Monolayer molybdenum disulfide-cobalt ferrite nanocomposite material as well as preparation method and application thereof
  • Monolayer molybdenum disulfide-cobalt ferrite nanocomposite material as well as preparation method and application thereof
  • Monolayer molybdenum disulfide-cobalt ferrite nanocomposite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of aminated molybdenum disulfide

[0035] Add 10g of commercial molybdenum disulfide powder and 750mL of deionized water into a 1000mL three-neck flask, place it in a low-power ultrasonic tank, and oscillate ultrasonically for 6 hours; the reaction product is washed three times with deionized water, collected by centrifugation, and then placed in vacuum drying Dry in the oven for 24 hours to obtain molybdenum disulfide nanosheets; take 0.25 g of vacuum-dried molybdenum disulfide nanosheets and redisperse them in 200 mL of deionized water, add 0.25 g of γ-aminopropyltriethoxysilane, ultrasonically oscillate for 2 hours, and then centrifuge , washed three times with absolute ethanol alcohol, placed in a vacuum oven and dried for 24 hours to obtain aminated molybdenum disulfide;

[0036] (2) Preparation of carboxylated cobalt ferrite nanoparticles

[0037] In a 1000mL three-necked flask, 12.12g 8.0g FeCl 3 ·6H 2 O and 4.05 g CoCl 2 ·6H 2 O was dissolve...

Embodiment 2

[0041] (1) Preparation of aminated molybdenum disulfide

[0042] Put 5.0g of commercial molybdenum disulfide powder and 750mL of deionized water into a 1000mL three-neck flask, place it in a low-power ultrasonic tank, and oscillate ultrasonically for 6 hours; the reaction product is washed three times with deionized water, collected by centrifugation, and then placed in a vacuum Dry in a drying oven for 24 hours to obtain molybdenum disulfide nanosheets; take 0.25 g of vacuum-dried molybdenum disulfide nanosheets and redisperse them in 200 mL of deionized water, add 0.25 g of γ-aminopropyltriethoxysilane, ultrasonically oscillate for 2 hours, and then centrifuge Separation, washing with absolute ethanol three times, and drying in a vacuum oven for 24 hours to obtain aminated molybdenum disulfide;

[0043] (2) Preparation of carboxylated cobalt ferrite nanoparticles

[0044] In a 1000mL three-necked flask, 8.0g FeCl 3 ·6H 2 O and 4.05 g CoCl 2 ·6H 2 O was dissolved in 750m...

Embodiment 3

[0048] (1) Preparation of aminated molybdenum disulfide

[0049] Add 5g of commercial molybdenum disulfide powder and 750mL of deionized water into a 1000mL three-neck flask, place it in a low-power ultrasonic tank, and oscillate ultrasonically for 6 hours; the reaction product is washed three times with deionized water, collected by centrifugation, and then placed in vacuum drying Dry in the oven for 24 hours to obtain molybdenum disulfide nanosheets; take 0.25 g of vacuum-dried molybdenum disulfide nanosheets and redisperse them in 200 mL of deionized water, add 0.25 g of γ-aminopropyltriethoxysilane, ultrasonically oscillate for 2 hours, and then centrifuge , washed three times with absolute ethanol alcohol, placed in a vacuum oven and dried for 24 hours to obtain aminated molybdenum disulfide;

[0050] (2) Preparation of carboxylated cobalt ferrite nanoparticles

[0051] In a 1000mL three-necked flask, 8.0g FeCl 3 ·6H 2 O and 4.05 g CoCl 2 ·6H 2 O was dissolved in 750...

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Abstract

The invention discloses a monolayer molybdenum disulfide-cobalt ferrite nanocomposite material and a preparation method and application thereof, and particularly relates to the field of novel nanocomposite materials. The monolayer molybdenum disulfide-cobalt ferrite nanocomposite material consists of molybdenum disulfide nanonanosheets and cobalt ferrite nanoparticles, wherein the surfaces of the molybdenum disulfide nanonanosheets are uniformly modified by the cobalt ferrite nanoparticles; the molybdenum disulfide nanonanosheets adopt layered stripping structures. The cobalt ferrite nanoparticles are assembled on the surfaces of the molybdenum disulfide nanonanosheets through a reaction in which amino groups and carboxyl groups form amide bonds; the preparation method has the advantages of low energy consumption, low cost and high yield; the obtained composite material can be used as a magnetic resonance imaging contrast agent and a controllable medicine carrier at the same time; under the guidance of a magnetic field, a medicine can reach and be enriched on a lesion site so as to achieve intelligent medicine release and real-time therapeutic effect assessment under the guidance of magnetic resonance imaging; through change of the relative contents of molybdenum disulfide and cobalt ferrite in the composite material, controllable adjustment of the magnetic resonance imaging effect and the medicine loading capacity can be achieved.

Description

technical field [0001] The invention relates to the field of novel nanocomposite materials, in particular to a single-layer molybdenum disulfide-cobalt ferrite nanocomposite material and its preparation method and application. Background technique [0002] Magnetic resonance imaging has the biological safety of no radiation damage, the technical flexibility of tomography in any direction, and the technical advantages of covering multi-parameter characteristics such as proton density, relaxation, and chemical shift, as well as high spatial resolution and high contrast. It has become one of the most powerful detection methods in contemporary clinical diagnosis. Magnetic resonance imaging mainly realizes the spatial positioning of hydrogen protons in human tissue through the gradient magnetic field dependent on the spatial position, and then realizes human body imaging through the acquisition, processing and image reconstruction of hydrogen proton magnetic resonance signals. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K49/08A61K47/02
Inventor 王光硕马莹莹
Owner HEBEI UNIV OF ENG
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