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Superparamagnetic Fe3O4/APTES (Aminopropyltriethoxysilane) composite nanoparticles and characterization method thereof

A technology of composite nanoparticles and magnetic nanoparticles, which is applied in the field of nanomaterials, can solve the problems of poor oxidation resistance, poor dispersion stability, and increased particle size of colloidal solutions, and achieve good biocompatibility, superparamagnetic magnetic Energy, the effect of excellent magnetic properties

Inactive Publication Date: 2015-08-12
WUZHOU INST OF PROD QUALITY INSPECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Magnetic nanomaterials have the surface effect of nanoparticles, and have a strong tendency to aggregate due to the influence of magnetism, resulting in increased particle size and poor dispersion stability, which affects their compatibility in biological tissues
while Fe 3 o 4 The colloidal solution has poor oxidation resistance and is easily oxidized by air to form γ-Fe 2 o 3 Particles, which directly lead to particle aggregation and precipitation, must be surface modified

Method used

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  • Superparamagnetic Fe3O4/APTES (Aminopropyltriethoxysilane) composite nanoparticles and characterization method thereof
  • Superparamagnetic Fe3O4/APTES (Aminopropyltriethoxysilane) composite nanoparticles and characterization method thereof
  • Superparamagnetic Fe3O4/APTES (Aminopropyltriethoxysilane) composite nanoparticles and characterization method thereof

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Embodiment 1

[0030] 1 Experimental part

[0031] 1.2 Instruments and reagents

[0032] Instruments: Rigaku D / max 2500v / pc X-ray powder diffractometer (Rigaku Japan); FT-IR Fourier transform infrared spectrometer (Perkin Elmer Inc); JEM-2100 transmission electron microscope (Japan); MPMS-XL-7 superconducting Quantum interference magnetic measurement system (Quantum Design, USA); DKB-501S super constant temperature water tank (Shanghai Jinghong Experimental Equipment Co., Ltd.); DW-3 digital display stepless constant speed stirrer (Gongyi Yingyu Yuhua Instrument Factory); AR1140 electronic analytical balance (Ohaus (Shanghai) Company); DZF-1B vacuum drying oven (Shanghai Yuejin Medical Instrument Factory); SK3200H ultrasonic cleaner (Shanghai Kedao Ultrasonic Instrument Co., Ltd.).

[0033] Reagent: FeCl 2 4H 2 O (Xilong Chemical Co., Ltd.); FeCl 3 ·6H 2 O (Xilong Chemical Co., Ltd.); Ammonia (Xilong Chemical Co., Ltd.); Anhydrous ethanol (Guangdong Guanghua Science and Technology Co., ...

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Abstract

The invention discloses superparamagnetic Fe3O4 / APTES (Aminopropyltriethoxysilane) composite nanoparticles and a characterization method thereof and aims at providing the superparamagnetic Fe3O4 / APTES composite nanoparticles with good product crystallinity, high purity and uniform particle size distribution and the characterization method thereof. The technical points are as follows: the composite nanoparticles are Fe3O4 magnetic nanoparticles whose surfaces are decorated with a silane coupling agent, namely 3-aminopropyltriethoxysilane. The superparamagnetic Fe3O4 / APTES composite nanoparticles and the characterization method thereof belong to the technical field of nanometer materials.

Description

technical field [0001] The present invention relates to a composite nanoparticle, in particular, a superparamagnetic Fe 3 o 4 / APTES composite nanoparticle, the invention also relates to a characterization method of the nanoparticle, which belongs to the technical field of nanomaterials. Background technique [0002] In recent years, nanotechnology has been widely used in many fields such as materials science, electronics, and biology, and has achieved breakthroughs. Among them, nanomaterials used in the field of biomedicine are called nanobiological materials. Fe in magnetic nanoparticles 3 o 4 Magnetic nanoparticles are the most widely used. Due to its superparamagnetic properties, non-immunogenicity, low toxicity and good biocompatibility, it has many potential applications in the fields of immunoassay, targeted drug, DNA separation, etc., making it a bio-nanomaterial field. one of the research hotspots. [0003] in Fe 3 o 4 Co-precipitation is usually used in the...

Claims

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Application Information

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IPC IPC(8): H01F1/11C01G49/08
Inventor 朱海军梁超雄吴婕李倩雯谭略
Owner WUZHOU INST OF PROD QUALITY INSPECTION