Red phosphorus/zinc oxide heterojunction film for realizing photocatalysis disinfection by utilizing screen LED light, and preparation method and application thereof

Abstract

The invention discloses a red phosphorus-zinc oxide heterojunction film for realizing photocatalysis disinfection by utilizing screen LED light and a preparation method thereof. The preparation methodcomprises the following steps: step 1, selecting glass as a substrate, sequentially placing the substrate in acetone, absolute ethyl alcohol and deionized water for ultrasonic cleaning, and naturallydrying the substrate at room temperature for later use; 2, preparing a red phosphorus film, and plating a layer of the uniform red phosphorus film on the surface of the glass by using a chemical vapor deposition method; and 3, preparing a nanometer ZnO film, and plating a layer of the uniform nanometer ZnO film on the glass substrate deposited with the red phosphorus film obtained in the step 2 by using an atomic layer deposition method. The invention further discloses application of the red phosphorus-zinc oxide heterojunction film prepared according to the above technical scheme to screensof electronic equipment such as mobile phones. The red phosphorus-zinc oxide heterojunction film has the advantages that the red phosphorus-zinc oxide heterojunction film has excellent binding force and good light transmittance, can realize quick sterilization under the irradiation of LED light, and has broad-spectrum antibacterial property.

Description

Technical field [0001] The invention belongs to the technical field of biological antibacterial materials, and specifically relates to a red phosphorous / zinc oxide heterojunction film that uses screen LED photocatalytic disinfection, a preparation method and an application. Background technique [0002] In order to cope with epidemic diseases caused by pathogenic microorganisms and bacteria related to human contact, the demand for new antibacterial coatings is increasing. Among them, human touch screens, especially pathogenic microorganisms and bacterial contamination on the surface of mobile phones are a very urgent and important issue. With the increasing popularity of mobile phones, smart phones have become an indispensable tool in contemporary people’s lives. In addition to traditional communication functions such as making, answering calls, and sending information, smart phones are playing a role in services such as Internet access and payment. An increasingly important rol...

AI Technical Summary

Problems solved by technology

However, the wide bandgap of ZnO limits its activity in the visible region of the solar spectrum

In addition, the photocatalytic efficiency of ZnO is poor due to the easy recombination of photogenerated electrons and holes of single-component photocatalysts, low charge separation efficiency and fast recombination of charge carriers.

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