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Manganese dioxide/carbon cloth composite material as well as preparation method and application thereof and air purification device

An air purification device, manganese dioxide technology, applied in the field of air purification, can solve the problems of low conversion rate, unsatisfactory formaldehyde degradation effect, slow formaldehyde degradation rate, etc., achieve high degradation efficiency and conversion rate, good thermoelectric performance, The effect of efficient formaldehyde degradation

Active Publication Date: 2018-09-21
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Catalytic oxidation technology is an effective method to remove formaldehyde. However, the current catalytic oxidation technology mainly uses catalysts such as manganese oxides to accelerate the oxidative degradation of formaldehyde at room temperature. The degradation rate of formaldehyde is slow and the conversion rate is low. Degradation of formaldehyde The effect is not very ideal

Method used

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  • Manganese dioxide/carbon cloth composite material as well as preparation method and application thereof and air purification device
  • Manganese dioxide/carbon cloth composite material as well as preparation method and application thereof and air purification device
  • Manganese dioxide/carbon cloth composite material as well as preparation method and application thereof and air purification device

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no. 1 approach

[0033] The first embodiment of the present invention provides a method for preparing a manganese dioxide / carbon cloth composite material, comprising:

[0034] S1, providing carbon cloth and permanganate solution, the concentration of the permanganate solution is 10mmol / L to 300mmol / L; and

[0035] S2, disposing the carbon in the permanganate solution, and placing it under the condition of 0° C. to 80° C. for 0.5 h to 48 h to obtain the manganese dioxide / carbon cloth composite material.

[0036] In the embodiment of the present invention, manganese dioxide is loaded on the carbon cloth by performing an in-situ reaction on the carbon cloth to form the manganese dioxide / carbon cloth composite material, wherein the carbon fiber between the manganese dioxide and the carbon cloth An efficient heat transfer interface is formed, and the heat generated by the manganese dioxide / carbon cloth composite material in the electrified state can be quickly transferred to the manganese dioxide, ...

Embodiment 1

[0050] Take 1 mg potassium permanganate (KMnO 4 ) was dissolved in 70 mL deionized water to form KMnO 4 solution, and then a piece of carbon cloth (denoted as CC) with a size of 4cm×4cm was immersed in the KMnO 4 solution, and the reaction temperature was kept at 60°C for 5 hours, and finally the carbon cloth was taken out, washed with deionized water and dried at 105°C to obtain the manganese dioxide / carbon cloth composite material, denoted as MnO 2 -CC. Observing the manganese dioxide / carbon cloth composite material, it was found that the manganese dioxide / carbon cloth composite material was intact and undamaged, and the manganese dioxide / carbon cloth composite material was randomly twisted without fracture or slag dropping.

[0051] For CC and MnO 2 -CC conducts formaldehyde degradation experiment:

[0052] in MnO 2 -Copper electrodes are set at opposite ends of the CC, and the MnO 2 -CC was placed in an 800mL stainless steel reactor at 25°C for 30min without electri...

Embodiment 2

[0054] Take 0.5mg potassium permanganate (KMnO 4 ) was dissolved in 70 mL deionized water to form KMnO 4 solution, and then a piece of carbon cloth with a size of 4 cm × 4 cm was immersed in the KMnO 4 solution, and the reaction temperature was kept at 60°C for 5 hours, and finally the carbon cloth was taken out, washed with deionized water and dried at 105°C to obtain the manganese dioxide / carbon cloth composite material. Observing the manganese dioxide / carbon cloth composite material, it was found that the manganese dioxide / carbon cloth composite material was intact and undamaged, and the manganese dioxide / carbon cloth composite material was randomly twisted without fracture or slag dropping.

[0055] Adopt the method identical with embodiment 1 to carry out formaldehyde degradation experiment.

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Abstract

The invention provides a preparation method of manganese dioxide / carbon cloth composite material. The preparation method comprises the following steps: providing carbon cloth and a permanganate solution, wherein the concentration of the permanganate solution is 10mmol / L-300mmol / L; and putting the carbon cloth in the permanganate solution, and placing the solution for 0.5-48h at the temperature of0-80 DEG C to obtain the manganese dioxide / carbon cloth composite material. The invention also provides the manganese dioxide / carbon cloth composite material and application thereof and an air purification device.

Description

technical field [0001] The invention relates to the field of air purification, in particular to a manganese dioxide / carbon cloth composite material, its preparation method and application, and an air purification device. Background technique [0002] The level of formaldehyde pollution in indoor air directly affects the health of people who have been active indoors for a long time. Aiming at the characteristics of low concentration and long release cycle of formaldehyde, people have done a lot of research work on how to remove indoor formaldehyde. According to related reports, people spend more than 80% of their time in the indoor environment in their lifetime. Improving indoor air quality and researching efficient methods of removing formaldehyde have become a research hotspot in the field of indoor air. [0003] Catalytic oxidation technology is an effective method to remove formaldehyde. However, the current catalytic oxidation technology mainly uses catalysts such as man...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J37/02B01J37/08B01D53/86B01D53/72
CPCB01D53/8668B01D2257/70B01D2257/704B01D2257/708B01D2258/06B01J23/34B01J37/0201B01J37/08
Inventor 张彭义王金龙李金格
Owner TSINGHUA UNIV
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