Manganese dioxide nanorod silver-loaded catalyst as well as preparation method and application thereof

Abstract

The invention discloses a manganese dioxide nanorod silver-loaded catalyst which consists of a manganese dioxide nanorod carrier and an active substance silver, wherein the mass of the silver accounts for 1-6wt% of the mass of the catalyst, and the mass of the manganese dioxide nanorod carrier accounts for 94-99wt% of the mass of the catalyst. According to the invention, the manganese dioxide nanorod silver-loaded catalysts of different crystal forms are applied to room-temperature catalytic sterilization for the first time; the manganese dioxide nanorod silver-loaded catalysts of different crystal forms have different sterilization properties and can suppress and kill various germs such as escherichia coli and staphylococcus aureus.

Description

technical field [0001] The invention relates to a manganese dioxide nanometer silver-loaded silver catalyst, a preparation method and an application thereof. Background technique [0002] In recent years, catalytic oxidation technology, especially with semiconductor materials such as TiO 2 The photocatalytic oxidation technology as a catalyst has become a research hotspot in sterilization and disinfection technology, but the problem in its practical application is that it needs to use ultraviolet light or near ultraviolet light to excite TiO2. 2 The production of strong oxidizing intermediates kills microorganisms, which makes the overall equipment of this technology complex and leads to high costs. These obvious shortcomings limit the large-scale popularization and application of this technology. [0003] Non-photocatalytic sterilization technology mainly involves a series of catalysts loaded with silver, magnesium oxide and zinc oxide. Efficient adsorption and inactivati...

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Problems solved by technology

[0002] In recent years, catalytic oxidation technology, especially with semiconductor materials such as TiO 2 The photocatalytic oxidation technology as a catalyst has become a research hotspot in sterilization and disinfection technology, but the problem in its practical application is that it needs to use ultraviolet light or near ultraviolet light to excite TiO2. 2 The production of strong oxidative intermediates kills microorganisms, which makes the overall equipment of this technology complex and leads to high costs. These obvious shortcomings limit the large-scale application of this technology

If the catalyst of this invention is used for sterilization, it is difficult for bacteria to enter the pores to contact with the active component silver of the catalyst or the active oxygen generated by catalysis, so it is difficult to achieve excellent sterilization effect

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