Method for preparing mesoporous SiO2/CdS composite nanosphere

A nanosphere and mesoporous technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of semiconductor CdS photocatalysts, such as the presence and small specific surface area, and achieve convenient scale, Simple equipment and mild reaction conditions
CN102745738BInactive Publication Date: 2014-02-19ZHEJIANG NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG NORMAL UNIVERSITY
Publication Date
2014-02-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a mesoporous SiO2 / CdS composite nanosphere. The method is characterized by comprising the following steps of: hydrolyzing orthosilicate ester and C18TMS under the catalysis of ammonia water to prepare an SiO2 nanosphere, and performing reaction for 4 to 24 hours under the condition of 0 to 90 DEG C by taking the SiO2 nanosphere as a template, taking a cadmium salt as a cadmium source and taking thiourea as a sulfur source to obtain an SiO2 / CdS composite nanosphere; and calcining the SiO2 / CdS composite nanosphere at high temperature to obtain the mesoporous SiO2 / CdS composite nanosphere, and performing reaction for 2 to 8 hours at 30 to 200 DEG C by using H2S to obtain the mesoporous SiO2 / CdS composite nanosphere with a diameter of 270 to 400nm. In the process of preparing the mesoporous SiO2 / CdS composite nanosphere, reaction conditions are mild, simple equipment is required, large-scale preparation is facilitated, and the method is suitable for industrial production.
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Description

technical field

[0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing compound semiconductor functional nanomaterials. Background technique

[0002] Since composite nanomaterials are an important class of nanostructured materials, they have many important applications in the fields of drug release, photocatalysts, and laser diodes, especially SiO, which has both adsorption and photocatalysis properties. 2 / CdS composite nanomaterials have high application value in many fields such as photocatalysis, dye adsorption, and fluorescent probes. On the one hand, CdS is a visible-light-excited photocatalyst with a narrow band gap (2.42 eV), which can be used for the visible-light degradation of N-containing organic dyes such as rhodamine B. On the other hand, due to the mesoporous SiO 2 With a large specific surface area, it can be used for the adsorption of pollutants such as organic dyes. Currently, the SiO 2 T...

Claims

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