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Fe<3+>/Ag/TiO2/bamboo charcoal composite material and method for manufacturing cigarette filter tips by utilizing same

A technology of composite materials and bamboo charcoal, which is applied in the field of preparation of Fe3+/Ag/TiO2/bamboo charcoal composite materials, can solve problems such as no light source given, titanium dioxide crystal form for degradation not specified, reduction of photocatalytic activity of titanium dioxide, etc.

Inactive Publication Date: 2013-12-18
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are following problems in the catalyzer that makes with this method: 1., add nanometer titanium dioxide and various substances into water, nanometer material is easy to agglomerate in liquid phase, and the photocatalytic activity of the titanium dioxide after agglomeration reduces greatly; ②, do not give What kind of light source was used for degradation; ③, did not indicate the crystal form of titanium dioxide used for degradation

Method used

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  • Fe&lt;3+&gt;/Ag/TiO2/bamboo charcoal composite material and method for manufacturing cigarette filter tips by utilizing same
  • Fe&lt;3+&gt;/Ag/TiO2/bamboo charcoal composite material and method for manufacturing cigarette filter tips by utilizing same
  • Fe&lt;3+&gt;/Ag/TiO2/bamboo charcoal composite material and method for manufacturing cigarette filter tips by utilizing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: 1. Steps for preparing activated bamboo charcoal: roasting a certain amount of bamboo charcoal in an oxygen-free environment at 100-200°C for 2 hours to obtain activated bamboo charcoal for use; 2. 1 part of butyl titanate, 3 parts of absolute ethanol Add the volume ratio of 0.3 parts of ferric nitrate solution with a concentration of 0.21mol / L, 1 part of absolute ethanol, and 0.5 parts of glacial acetic acid into a dry container and stir evenly to make A solution. Stir evenly in a clean container to make solution B; ③. Slowly add solution B to solution A, stir while adding, continue stirring for about 30 minutes after the dropwise addition is completed to form a stable sol, and age the sol for about 5 hours for use; ④ 1. After putting the activated bamboo charcoal prepared in step ① into the aging sol prepared in step ③, treat it under ultrasonic conditions with a frequency of 45KHz at 32°C for 1h to make the sol enter the internal pores of the bamboo charcoa...

Embodiment 2

[0026] Example 2: 1. Steps for preparing activated bamboo charcoal: roasting a certain amount of bamboo charcoal in an oxygen-free environment at 100-200°C for 2 hours to obtain activated bamboo charcoal for use; 2. 1 part of butyl titanate, 3 parts of absolute ethanol Add the volume ratio of 0.4 parts of ferric nitrate solution with a concentration of 0.21mol / L, 1 part of absolute ethanol, and 0.5 parts of glacial acetic acid into a dry container and stir evenly to make A solution. Stir evenly in a clean container to make solution B; ③. Slowly add solution B to solution A, stir while adding, continue stirring for about 30 minutes after the dropwise addition is completed to form a stable sol, and age the sol for about 5 hours for use; ④ 1. After putting the activated bamboo charcoal prepared in step ① into the aging sol prepared in step ③, treat it under ultrasonic conditions with a frequency of 45KHz at 32°C for 1h to make the sol enter the internal pores of the bamboo charcoa...

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Abstract

The invention relates to a preparation method of novel cigarette filter tips which are non-toxic and can utilize sunlight to perform sterilization. A stable iron ion-doped TiO2 sol is prepared by adopting a Sol-gel method, ultrasonic treatment is performed to enable titanium dioxide particles to enter pores in bamboo charcoal, and the nanoscale titanium dioxide which has photocatalytic activity and is loaded on the bamboo charcoal is prepared after roasting. The purpose of preparing the novel cigarette filter tips which are non-toxic and can further utilize the sunlight to perform sterilization is achieved. The Fe<3+> / Ag / TiO2 / bamboo charcoal composite material prepared by the preparation method disclosed by the invention has high-efficient sterilization capability under the sunlight in the situation that the adding amount of hydrogen peroxide is very small. Experiments show that, in a liquid phase, medical sewage containing more microbes is selected as a target object, the adding amount of the composite material is 20g / l, and most of the microbes can be removed after the sunlight is utilized for irradiation for 10 minutes.

Description

technical field [0001] The invention relates to a catalyst for a cigarette filter, and relates to a Fe 3+ / Ag / TiO 2 The preparation method of / bamboo-charcoal composite material and adopt this material to prepare cigarette filter tip. Fe 3+ / Ag / TiO 2 / Bamboo charcoal composite material has a very good adsorption function, and after adding a very small amount of hydrogen peroxide, it has a very good bactericidal effect under sunlight, making smoking more hygienic and environmentally friendly, and the filter material can be recycled, and the cost is very low. Background technique [0002] Smoking is a bad habit that endangers human health, and it is impossible for the vast majority of smokers to quit smoking. For this reason, the cigarette industry has undergone continuous reforms, such as the birth of filter cigarettes. Studies have shown that smoking not only endangers your own health but also endangers the health of people around you. The loss caused by smoking in the w...

Claims

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Application Information

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IPC IPC(8): B01J23/89A24D3/16A01N59/16A01P1/00
Inventor 黄英张伟赵阳邵杰桑易斯叶林
Owner NORTHWESTERN POLYTECHNICAL UNIV
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