Preparation method and application of titanium dioxide nanorod array/silver nano composite material

A nanorod array, titanium dioxide technology, applied in the field of nanomaterials, can solve the problems of complex operation, high reaction temperature, large electric energy, etc., and achieve the effects of good repeatability, low reaction temperature and simple operation
CN110487769AInactive Publication Date: 2019-11-22JIANGHAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGHAN UNIVERSITY
Publication Date
2019-11-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method and application of a titanium dioxide nanorod array / silver nano composite material, and belongs to the field of nano materials. The preparation method comprises the following steps of: dissolving tetrabutyl titanate in a hydrochloric acid solution to obtain a hydrochloric acid solution of tetrabutyl titanate; putting a substrate into a hydrochloric acidsolution of tetrabutyl titanate, and performing hydrothermal reaction at a temperature of 140-160 DEG C for 3-10 hours to obtain a titanium dioxide nanorod array, the substrate being fluorine-doped stannic oxide transparent conductive glass; putting the titanium dioxide nanorod array into a silver-ammonia solution, and performing standing for 4-6 hours at a room temperature to obtain a mixture; and adding an ethanol solution of polyvinylpyrrolidone into the mixture, and reacting at a temperature of 60-80 DEG C for 2-4 hours to obtain the titanium dioxide nanorod array / silver nano composite material. According to the preparation method, a hydrothermal method and a chemical oxidation method are combined, so that the operation is simpler, the reaction temperature is low, and the preparationmethod is more energy-saving. The titanium dioxide nanorod array / silver nano composite material obtained by adopting the preparation method has the good SERS activity.
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Description

technical field

[0001] The invention relates to the field of nanomaterials, in particular to a preparation method and application of a titanium dioxide nanorod array / silver nanocomposite material. Background technique

[0002] Surface Enhanced Raman Scattering (SERS) technology can detect molecular level information of substances adsorbed on SERS active substrates. Therefore, SERS technology is widely used in ultrasensitive chemical detection and biological detection. Noble metals such as silver and gold have good SERS activity due to the localized plasmons on their surface. However, when noble metals are used as SERS active substrates, there are disadvantages such as high cost and difficulty in recycling. Therefore, low-cost and reusable titanium dioxide nanorod arrays / silver nanocomposites have good application prospects in the field of SERS.

[0003] At present, the operation of preparing this titanium dioxide / silver nanocomposite material is relatively complicated. For ...

Claims

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