Preparation method of TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material

A technology of activated carbon fiber cloth and activated carbon fiber, which is applied in the field of photocatalytic materials, can solve the problems of poor catalytic effect, uneven loading of TiO2, and weak combination, so as to improve surface hydrophilicity, increase reaction conversion rate, and simple method Effect

Inactive Publication Date: 2013-03-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, TiO 2 / ACF catalyst is prepared by directly adding TiO 2 (or TiO 2 Prebody) loaded onto unmodified ACF, this loading would cause TiO 2 The problem of uneven loading and weak binding leads to poor catalytic effect

Method used

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  • Preparation method of TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material
  • Preparation method of TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material
  • Preparation method of TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take a viscose-based activated carbon fiber with a size of 10cm*10cm, place it in a nitric acid solution with a concentration of 67% by mass, treat it in a constant temperature water bath at 80°C for 6 hours, wash it with water until the pH is neutral, and dry it in an oven. A viscose-based activated carbon fiber cloth modified with nitric acid was obtained.

[0018] The viscose-based activated carbon fibers modified with nitric acid were placed in 4% TiO 2 (P25, Degussa Company) suspension, impregnated with supernatant, and dried in an oven to make a catalyst. XRD analysis ( figure 1 ) shows that TiO 2 Micro-anatase and rutile type maintained, SEM ( Figure 2(a) ) shows that TiO 2 Disperses well on activated carbon fibers. The catalyst photodegraded toluene for 6 hours, and the degradation rate was 52.6%.

Embodiment 2

[0020] Take a viscose-based activated carbon fiber with a size of 10cm*10cm, put it in a nitric acid solution with a mass percentage concentration of 9.2%, treat it in a constant temperature water bath at 80°C for 0.5h, wash it with water until the pH is neutral, and dry it in an oven Dry to obtain viscose-based activated carbon fiber cloth modified by nitric acid.

[0021] The viscose-based activated carbon fibers modified by nitric acid were placed in 0.5% TiO 2 (P25, Degussa Company) suspension, impregnated with supernatant, and dried in an oven to make a catalyst. The catalyst photodegraded toluene for 6 hours, and the degradation rate was 20.5%.

Embodiment 3

[0023] Take a viscose-based activated carbon fiber with a size of 10cm*10cm, place it in a nitric acid solution with a mass percentage concentration of 30%, treat it in a constant temperature water bath at 80°C for 3 hours, wash it with water until the pH is neutral, and dry it in an oven , to obtain viscose-based activated carbon fiber cloth modified by nitric acid.

[0024] Nitric acid-modified viscose-based activated carbon fibers were placed in TiO with a mass percent concentration of 1%. 2 (P25, Degussa Company) suspension, impregnated with supernatant, and dried in an oven to make a catalyst. The catalyst photodegraded toluene for 6 hours, and the degradation rate was 34.7%.

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Abstract

Belonging to the technical field of photocatalytic material preparation, the invention discloses a preparation method of a TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material. The method includes the steps of: taking a viscose-based activated carbon fiber cloth, placing it in a nitric acid solution, conducting constant temperature treatment at 80 DEG C, carrying out washing and drying, thus obtaining a nitric acid modified viscose-based activated carbon fiber cloth; treating the dried viscose-based activated carbon fiber cloth, placing it into a TiO2 emulsion, performing ultrasonic immersing loading, and implementing drying, thus obtaining the TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material. The photocatalytic material provided in the invention can be directly used for purifying decorated living rooms, new cars and other places. The preparation method of the TiO2 loaded nitric acid modified viscose-based activated carbon fiber cloth photocatalytic material in the invention has the advantages of low cost and simplicity, and has a reaction conversion rate enhanced by nearly 3 times.

Description

technical field [0001] The present invention relates to a kind of TiO 2 The invention discloses a preparation method of a photocatalytic material loaded on viscose-based activated carbon fiber cloth modified by nitric acid, belonging to the technical field of photocatalytic materials. Background technique [0002] With the rapid development of industrial technology, the problem of environmental pollution is becoming more and more serious. In particular, VOCS (Volatile Combustible Gases, mainly formaldehyde, benzene, toluene, and xylene) in confined spaces such as indoors and cars have been paid more and more attention to the harm to the human body. How to remove volatile combustible gases efficiently, energy-saving, and cheaply has become a subject that has been trying to break through in the field of science and technology. Photocatalytic technology uses solar energy as an energy source. Under the action of photosensitive catalytic materials, volatile combustible gases ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18A62D3/17
Inventor 蒋新章冬冬柳艳炉吴忠标郭森
Owner ZHEJIANG UNIV
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