Silver-loaded nanometer titanium dioxide sol, preparation method and applications thereof

A nano-titanium dioxide, titanium dioxide technology, applied in the direction of botany equipment and methods, applications, chemicals for biological control, etc., can solve the problems of low concentration of titanium dioxide, poor stability, large particle size, etc.
CN110250169AActive Publication Date: 2019-09-20厦门威亮光学涂层技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
厦门威亮光学涂层技术有限公司
Publication Date
2019-09-20

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Abstract

The invention belongs to the field of compound preparation, and discloses a silver-loaded nanometer titanium dioxide sol, a preparation method and applications thereof. The preparation method comprises: (1) carrying out mixing hydrolysis on an alkoxy titanium compound, hydrogen peroxide, a complexing agent and water, uniformly mixing the obtained titanium dioxide precursor solution and a nucleating agent, and carrying out hydrothermal treatment to obtain a titanium dioxide water dispersion liquid; (2) cooling the titanium dioxide water dispersion liquid to a room temperature, washing with water to achieve neutrality, and concentrating to obtain a concentrated titanium oxide sol; and (3) uniformly mixing the concentrated titanium oxide sol and a silver nitrate aqueous solution, and irradiating the obtained titanium-silver mixed solution with ultraviolet light. According to the present invention, with the method, the silver-loaded nanometer titanium dioxide sol with characteristics of small particle size, large specific surface area, good stability and high titanium dioxide concentration can be obtained, and the dispersibility of silver can be effectively controlled, such that silver is uniformly dispersed on the surface of the carrier titanium dioxide so as to enhance the antibacterial effect.
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Description

technical field

[0001] The invention belongs to the field of material preparation, and in particular relates to a silver-loaded nano-titanium dioxide sol and a preparation method and application thereof. Background technique

[0002] metal oxide TiO 2 It is a typical photocatalyst antibacterial material, which has strong antibacterial ability under ultraviolet irradiation conditions, and can be used in environmental protection fields such as removing nitrogen oxides in air pollution and water pollution treatment. Nano-silver is the most efficient metal antibacterial material known, which has the advantages of good antibacterial effect, low concentration, and many types of sterilization. At present, researchers have developed silver-loaded nano-titanium dioxide materials by taking advantage of the advantages of both.

[0003] There are many methods for preparing silver-loaded nano-titanium dioxide materials involved in the prior art. For example, CN1318133C discloses a met...

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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