Nanometer manganese dioxide sponge, and preparation method and application thereof

A technology of nano-manganese dioxide and manganese dioxide sponge, which is applied in chemical instruments and methods, catalyst activation/preparation, separation methods, etc., can solve the problems of difficulty in improving catalytic activity and low loading capacity, and achieve improved catalytic degradation of formaldehyde ability, solve the effect of low load rate, and solve the effect of insufficient exposure

Active Publication Date: 2019-07-05
SOUTH CHINA UNIV OF TECH +2
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials all face the problem that the loading capaci...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nanometer manganese dioxide sponge, and preparation method and application thereof
  • Nanometer manganese dioxide sponge, and preparation method and application thereof
  • Nanometer manganese dioxide sponge, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The melamine nanosponge substrate is ethanol activated and dried. Weigh 3g of potassium permanganate and 5.6g of sodium oxalate into a reaction bottle, add 100ml of distilled water, mix well to obtain a reaction solution Ⅰ, put the nano-sponge cut to a weight of 0.3g into the reaction solution Ⅰ for 20 minutes, and then soak The final nano-sponge is put into 50ml reaction kettle I (containing 20ml water), and after stirring hydrothermal reaction at 120°C for 4 hours, the nano-manganese dioxide sponge initially grown in situ is obtained. After soaking, the remaining reaction solution II is used again for reaction Liquid II soaked the nano-manganese dioxide sponge initially grown in situ for 20 minutes, and then put it into the 50ml reaction kettle I again, stirred and hydrothermally reacted at 120°C for 7 hours, and then cooled naturally to room temperature. Soak the reacted composite material in deionized water for 30 minutes, pour out the water, repeat the operation 4 ...

Embodiment 2

[0040]The melamine nanosponge substrate is ethanol activated and dried. Weigh 4g of sodium permanganate and 1.6g of potassium oxalate into a reaction bottle, add 150ml of distilled water, mix well to obtain a reaction solution Ⅰ, put the nano-sponge cut to a weight of 0.3g into the reaction solution Ⅰ for 20 minutes, and then soak The final nano-sponge is put into a 50ml reaction kettle I (containing 20ml water), and after 120°C stirring hydrothermal reaction for 4 hours, the nano-manganese dioxide sponge initially grown in situ is obtained. After soaking, the remaining reaction solution II is used again. Liquid II soaked the nano-manganese dioxide sponge initially grown in situ for 20 minutes, and then put it into the 50ml reaction kettle I again, stirred and hydrothermally reacted at 120°C for 7 hours, and then cooled naturally to room temperature. Soak the reacted composite material in deionized water for 30 minutes, pour out the water, repeat the operation 4 times, put it ...

Embodiment 3

[0042] The melamine nanosponge substrate is ethanol activated and dried. Weigh 2g of sodium permanganate, 2g of potassium permanganate, 1g of potassium oxalate, and 1g of ammonium oxalate into a reaction flask, add 150ml of distilled water, mix well to obtain reaction solution I, and put the nano-sponge cut to a weight of 0.3g into the reaction flask. Soak in solution Ⅰ for 20 minutes, then put the soaked nano-sponge into 50ml reaction kettle Ⅰ (containing 20ml water), stir and hydrothermally react at 100°C for 5 hours, and obtain a preliminary in-situ grown nano-manganese dioxide sponge. Finally, the remaining reaction solution II was used to soak the initially in-situ grown nano-manganese dioxide sponge in the reaction solution II again for 20 minutes, and then put it into the 50ml reaction kettle I again, stirred and hydrothermally reacted at 100°C for 5 hours, and then cooled naturally to room temperature. Soak the reacted composite material in distilled water for 30 minut...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a nanometer manganese dioxide sponge, and a preparation method and an application thereof. The method comprises the following steps: (1) permanganate and oxalate are added to water in order to obtain a reaction solution I; (2) nano-sponge is added to the reaction solution I, is soaked and taken out, and undergoes a hydrothermal reaction at 80-120 DEG C for 2-7 h to obtain apreliminarily in situ grown manganese dioxide nano-sponge, and a solution obtained after the soaking and taking-out is a reaction solution II; and (3) the preliminarily in situ grown nanometer manganese dioxide sponge is soaked in the reaction solution II, is taken out, and undergoes a hydrothermal reaction at 80-120 DEG C for 5-12 h, and the obtained reaction product is purified to obtain the nanometer manganese dioxide sponge. The 3D nano-sponge is used as a template to efficiently load nanometer manganese dioxide, so the preparation method is simple, the material utilization rate is high,and the load rate reaches up to 220%; and the prepared catalytic material can effectively degrade formaldehyde with a low concentration (1.4 ppm), and the degradation rate reaches up to 90%.

Description

technical field [0001] The invention belongs to the technical field of nano-catalysis, and in particular relates to a nano-manganese dioxide sponge and its preparation and application. Background technique [0002] Formaldehyde (formaldehyde) is a recognized carcinogenic and teratogenic pollutant, which can reduce the body's resistance and cause chronic respiratory diseases, especially for pregnant women and children. Formaldehyde is known as the main indoor air pollutant in airtight buildings, which is continuously released from furniture, construction materials and household products. Formaldehyde is a typical pollutant in indoor and outdoor air. Even if it contains 0.5ppm formaldehyde, long-term exposure to the air will cause adverse effects on human health. However, the removal of indoor low-concentration formaldehyde is still a challenging problem. [0003] In order to reduce the concentration of formaldehyde in the air, many technologies have been developed. There a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J31/32B01J37/10B01D53/86B01D53/72
CPCB01D53/8668B01D2257/704B01D2259/4508B01J31/32B01J35/0013B01J37/10
Inventor 肖凯军谌凯银玉容陈险峰陈俊岭彭元
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap