a sio 2 @cdte@au Nanocomposites Preparation Method

A technology of nanocomposite materials and seeds, applied in the direction of luminescent materials, nanotechnology, nano-optics, etc., to achieve the effect of good nonlinear optical performance and compact polymer
CN110846039BActive Publication Date: 2020-10-30ZHEJIANG UNIVERSITY OF MEDIA AND COMMUNICATIONS
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIVERSITY OF MEDIA AND COMMUNICATIONS
Publication Date
2020-10-30

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Abstract

The invention relates to a preparation method of a SiO2@CdTe@Au nanocomposite. The SiO2@CdTe@Au nanocomposite mainly comprises silicon dioxide spheres, CdTe quantum dots and Au nanoparticles. According to the nanocomposite, bare silicon dioxide spheres adsorbs a layer of polydiene dimethyl ammonium chloride solution at first, then adsorbs the CdTe quantum dots, then adsorbs a layer of a solution prepared from poly(sodium 4-p-styrenesulfonate), adsorbs a layer of the polydiene dimethyl ammonium chloride solution next, and finally adsorbs the Au nanoparticles. According to the nanocomposite prepared by the method, the CdTe quantum dots and the Au nanoparticles can be firmly adsorbed on the silicon dioxide spheres, thereby obtaining the nanocomposite with optical and nonlinear optical characteristics.
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Description

technical field

[0001] The invention relates to the technical field of new materials, in particular to a SiO 2 Preparation methods of @CdTe@Au nanocomposites. Background technique

[0002] In the era when optics and nonlinear optics complement each other, various potential optical applications exist, such as human eye and optical sensor protection, optical power limitation, all-optical switching, optical data storage, electronic and photonic devices. Therefore, various related composite nanomaterials with optical and nonlinear optical effects of these properties have firmly attracted public attention.

[0003] Nanoscale silica materials have become key carrier materials due to their large specific surface area, good chemical stability, non-toxicity, hydrophilicity and easy functionalization of surface silanols. For nanocomposite matrices, the morphology and dispersion of the material is also an innovation for the researchers. At the same time, quantum dots are ideal fluor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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