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A red phosphorus/zinc oxide heterojunction film using screen LED photocatalytic disinfection, preparation method and application

A zinc oxide and heterojunction technology, applied in coatings and other directions, can solve the problems of low charge separation efficiency, limited activity, poor photocatalytic efficiency of ZnO, etc., and achieves low implementation difficulty, good light transmittance, and improved photocatalytic activity. Effect

Active Publication Date: 2022-05-03
武汉常为新生命科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • A red phosphorus/zinc oxide heterojunction film using screen LED photocatalytic disinfection, preparation method and application
  • A red phosphorus/zinc oxide heterojunction film using screen LED photocatalytic disinfection, preparation method and application
  • A red phosphorus/zinc oxide heterojunction film using screen LED photocatalytic disinfection, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A method for preparing a red phosphorus-zinc oxide heterojunction thin film utilizing LED photocatalytic disinfection, comprising the following steps:

[0055] Step 1, pretreatment of the substrate, placing the substrate in acetone, absolute ethanol and deionized water for 15 minutes, and then drying it naturally at room temperature, and the substrate is glass;

[0056] Step 2, preparing red phosphorus film,

[0057] The surface of the substrate obtained after step 1 is completed adopts chemical vapor deposition (CVD) to prepare a red phosphorus film, including:

[0058] 1) Red phosphorus powder pretreatment, put the red phosphorus powder at 200°C, hydrothermally treat it for 12 hours, and slowly lower it to room temperature, then vacuum-dry the obtained powder, and then grind it to less than 100 microns to complete the red phosphorus powder pretreatment;

[0059] 2) Put the pretreated red phosphorus and cleaned quartz glass in a CVD furnace to carry out the preparatio...

Embodiment 2

[0063] A method for preparing a red phosphorus-zinc oxide heterojunction thin film utilizing LED photocatalytic disinfection, comprising the following steps:

[0064] Step 1, pretreatment of the substrate, placing the substrate in acetone, absolute ethanol and deionized water for 15 minutes, and then drying it naturally at room temperature, and the substrate is glass;

[0065] Step 2, preparing red phosphorus film,

[0066] The surface of the substrate obtained after step 1 is completed adopts chemical vapor deposition (CVD) to prepare a red phosphorus film, including:

[0067] 1) Red phosphorus powder pretreatment, put the red phosphorus powder at 200°C, hydrothermally treat it for 12 hours, and slowly lower it to room temperature, then vacuum-dry the obtained powder, and then grind it to less than 100 microns to complete the red phosphorus powder pretreatment;

[0068] 2) Put the pretreated red phosphorus and cleaned quartz glass in a CVD furnace to carry out the preparatio...

Embodiment 3

[0072] A method for preparing a red phosphorus-zinc oxide heterojunction thin film utilizing LED photocatalytic disinfection, comprising the following steps:

[0073] Step 1, pretreatment of the substrate, placing the substrate in acetone, absolute ethanol and deionized water for 15 minutes, and then drying it naturally at room temperature, and the substrate is glass;

[0074] Step 2, preparing red phosphorus film,

[0075] The surface of the substrate obtained after step 1 is completed adopts chemical vapor deposition (CVD) to prepare a red phosphorus film, including:

[0076] 1) Red phosphorus powder pretreatment, put the red phosphorus powder at 200°C, hydrothermally treat it for 12 hours, and slowly lower it to room temperature, then vacuum-dry the obtained powder, and then grind it to less than 100 microns to complete the red phosphorus powder pretreatment;

[0077] 2) Put the pretreated red phosphorus and cleaned quartz glass in a CVD furnace to carry out the preparatio...

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Abstract

The invention discloses a red phosphorus-zinc oxide heterojunction film and a preparation method for photocatalytic disinfection using screen LEDs, comprising the following steps: step 1, selecting glass as a substrate, and placing it in acetone, absolute ethanol and deionized water in sequence Each ultrasonic cleaning, natural drying at room temperature, standby; Step 2, prepare a red phosphorus film, and use chemical vapor deposition to coat a uniform red phosphorus film on the glass surface; Step 3, prepare a nano-ZnO film, and deposit A uniform nanometer ZnO film was plated on the glass substrate with red phosphorus film by atomic layer deposition. The invention also discloses an application of the red phosphorus-zinc oxide heterojunction thin film prepared in the above technical solution on the screen of electronic equipment such as mobile phones. Its advantages are: the red phosphorus-zinc oxide heterojunction film has excellent binding force and good light transmission, can quickly sterilize under the irradiation of LED light, and has broad-spectrum antibacterial properties.

Description

technical field [0001] The invention belongs to the technical field of biological antibacterial materials, and in particular relates to a red phosphorus / zinc oxide heterojunction film, a preparation method and an application thereof, which are photocatalytically sterilized by screen LEDs. Background technique [0002] In response to the prevalence of diseases caused by pathogenic microorganisms and bacteria associated with human contact, there is an increasing demand for novel antimicrobial coatings. Among them, the contamination of pathogenic microorganisms and bacteria on touch screens touched by humans, especially on the surface of mobile phones, is a very urgent and important issue. With the increasing popularity of mobile phones, smart phones have become an indispensable and important tool in contemporary people's lives. In addition to traditional communication functions such as dialing, answering calls, and sending messages, smart phones play an important role in servi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34C03C17/22C03C17/245
CPCC03C17/34C03C17/22C03C17/245C03C2218/152C03C2217/71
Inventor 吴水林李浚刘想梅崔振铎杨贤金
Owner 武汉常为新生命科技有限公司
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