Nano titanium dioxide photocatalytic antibacterial material as well as preparation method and application thereof

A nano-titanium dioxide, antibacterial material technology, applied in chemical instruments and methods, physical/chemical process catalysts, antibacterial drugs, etc., can solve problems such as unfavorable photocatalytic reactions, easy recombination, easy particle agglomeration, etc., to improve the photocatalytic efficiency. , avoid particle agglomeration, easier separation effect

Pending Publication Date: 2021-07-09
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of a single titanium dioxide antibacterial agent is that the electron-holes are easy to recombine, and the particles are easy to agglomerate, which is not conducive to the continuous and stable photocatalytic reaction.

Method used

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  • Nano titanium dioxide photocatalytic antibacterial material as well as preparation method and application thereof
  • Nano titanium dioxide photocatalytic antibacterial material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In this embodiment, a preparation method of nano-titanium dioxide photocatalytic antibacterial material specifically includes the following steps:

[0053] S1 Put the cigarette filter into a tube furnace, pass in an inert gas, slowly raise the temperature to 800°C at a rate of 15°C / min in an inert gas environment, keep the temperature for calcination for 30 minutes, and then cool naturally to obtain a carbonized cigarette filter;

[0054] S2 Add double-distilled water into the surfactant dodecylamine, stir until it is fully dissolved, adjust the pH value to 8, and then add titanium (IV) isopropoxide salt solution to make Ti in the titanium dioxide growth solution 4+ The concentration of ions is 0.25mol / L, and a titania growth solution is prepared;

[0055] S3 immersing the carbonized cigarette filter in the titanium dioxide growth solution and stirring for 30 min;

[0056] S4 Place the carbonized cigarette filter soaked in the titanium dioxide growth solution in a hydr...

Embodiment 2

[0060] In this embodiment, a preparation method of nano-titanium dioxide photocatalytic antibacterial material specifically includes the following steps:

[0061] S1 Put the cigarette filter into a tube furnace, pass in an inert gas, slowly raise the temperature to 700°C at a rate of 10°C / min in an inert gas environment, keep the temperature for calcination for 40 minutes, and then cool naturally to obtain a carbonized cigarette filter;

[0062] S2 Add double-distilled water into the surfactant dodecylamine, stir until it is fully dissolved, adjust the pH value to 9, and then add titanium (IV) isopropoxide salt solution to make Ti in the titanium dioxide growth solution 4+ The concentration of ions is 0.25mol / L, and a titania growth solution is prepared;

[0063] S3 immersing the carbonized cigarette filter in the titanium dioxide growth solution and stirring for 25 minutes;

[0064] S4 Place the carbonized cigarette filter soaked in the titanium dioxide growth solution in a ...

Embodiment 3

[0068] In this embodiment, a preparation method of nano-titanium dioxide photocatalytic antibacterial material specifically includes the following steps:

[0069] S1 Put the cigarette filter into a tube furnace, pass in an inert gas, slowly raise the temperature to 750°C at a rate of 20°C / min in an inert gas environment, keep the temperature for calcination for 20 minutes, and then cool naturally to obtain a carbonized cigarette filter;

[0070] S2 Add double-distilled water into the surfactant dodecylamine, stir until it is fully dissolved, adjust the pH value to 10, and then add titanium (IV) isopropoxide salt solution to make Ti in the titanium dioxide growth solution 4+ The concentration of ions is 0.25mol / L, and a titania growth solution is prepared;

[0071] S3 immersing the carbonized cigarette filter in the titanium dioxide growth solution and stirring for 40 min;

[0072] S4 Place the carbonized cigarette filter soaked in the titanium dioxide growth solution in a hyd...

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Abstract

The invention discloses a preparation method of a nano titanium dioxide photocatalytic antibacterial material, which comprises the following steps: calcining a cigarette filter at high temperature to obtain a carbonized cigarette filter, immersing the carbonized cigarette filter in a titanium dioxide growth solution, stirring, reacting the immersed carbonized cigarette filter at high temperature and high pressure, and cooling to obtain the nano titanium dioxide photocatalytic antibacterial material. And washing and drying the reaction product to obtain the carbonized cigarette filter loaded nano TiO2 antibacterial material. The cigarette filter tip is carbonized to serve as a loading material of nano TiO2, so that waste consumables are recycled, a new green and economical application is provided for daily waste, after the cigarette filter tip is carbonized, the ultra-porous structure in the cigarette filter tip can provide a larger specific surface region and a larger pore volume to load more nano TiO2 particles, and the cigarette filter tip can be used for preparing the cigarette filter tip. A reaction platform is provided for photocatalytic reaction, adhesion of reaction substances is facilitated, and the photocatalytic efficiency is effectively improved. The invention further discloses the nano titanium dioxide photocatalytic antibacterial material and application thereof.

Description

technical field [0001] The invention relates to the technical field of inorganic antibacterial materials, more specifically, to a nano-titanium dioxide photocatalytic antibacterial material, a preparation method and an application thereof. Background technique [0002] At present, common antibacterial materials are mainly divided into two categories: organic antibacterial materials and inorganic antibacterial materials. Organic antibacterial materials are mostly toxic, and are prone to microbial drug resistance and drug resistance, which are greatly limited in practical applications. Inorganic antibacterial materials are mainly ionic antibacterial materials based on silver ions and inorganic materials that use photocatalytic antibacterial. Although the antibacterial effect of silver ions is good, it is not stable and has high processing costs. The n-type semiconductor photocatalytic material mainly composed of titanium dioxide has high photocatalytic efficiency, no secondary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K41/00A61K9/51A61K47/38A61P31/04B82Y5/00B01J21/06
CPCA61K41/0057A61K9/5161A61K9/5192A61P31/04B82Y5/00B01J21/063B01J35/004Y02A50/30
Inventor 张梦龙王琨强罗东向
Owner SOUTH CHINA NORMAL UNIVERSITY
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