Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An application of carbon nanotubes with defects

A technology of carbon nanotubes and defect states, which is applied in the fields of physical/chemical process catalysts, oxidized water/sewage treatment, chemical instruments and methods, etc., and can solve problems such as weak catalytic ability and inability to fully utilize active sites of carbon nanotubes , to achieve excellent oxidative degradation effect, excellent performance and its selective degradation effect

Active Publication Date: 2021-06-08
NANCHANG HANGKONG UNIVERSITY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems that the active sites of existing carbon nanotubes cannot be fully utilized and their own catalytic ability is weak, and provides an application of carbon nanotubes with defective states.

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
  • An application of carbon nanotubes with defects
  • An application of carbon nanotubes with defects
  • An application of carbon nanotubes with defects

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] Specific embodiment 1: This embodiment is a method for preparing carbon nanotubes with defects, specifically according to the following steps:

[0020] 1. Preparation of oxidized carbon nanotubes: Mix concentrated sulfuric acid and concentrated nitric acid evenly to obtain a mixed acid; add carbon nanotubes to the mixed acid, place in a constant temperature water bath, and react for 3 hours at 75°C to 80°C 9h, then repeatedly washed with deionized water and absolute ethanol until the washing solution is neutral, and finally dried at a temperature of 60°C to 65°C to obtain carbon dioxide nanotubes; the concentrated sulfuric acid and concentrated nitric acid The volume ratio is 3:1; the mass ratio of the volume of the mixed acid to the carbon nanotube is 1L: (15g~17g);

[0021] 2. Heat treatment: put the carbon dioxide nanotubes prepared in step 1 in a tube furnace, pass inert gas at a flow rate of 150mL / min to 160mL / min for 20 minutes to exhaust the air, and then heat it...

specific Embodiment approach 2

[0022] Embodiment 2: This embodiment differs from Embodiment 1 in that: the mass percentage of the concentrated sulfuric acid described in step 1 is 95% to 98%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0023] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the mass percentage of the concentrated nitric acid described in step 1 is 65%-68%. Others are the same as those in Embodiment 1 or 2.

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

An application of a carbon nanotube with a defect state relates to an application of a carbon nanotube. The invention aims to solve the technical problem that the active sites of the existing carbon nanotubes cannot be fully utilized and their own catalytic ability is relatively weak. The present invention: 1. Preparation of oxidized carbon nanotubes; 2. Heat treatment. The defect-state carbon nanotube prepared by the invention is applied to catalyze the degradation of organic pollutants in water by potassium peroxymonosulfate. The present invention prepares a carbon nanotube with a defect state, and uses it as a catalyst for activating and degrading organic pollutants in the water phase by potassium peroxomonosulfate (PMS), which is less disturbed by background organic and inorganic substances, and is effective Oxidation mineralizes the target contaminants. More importantly, the charge-transfer-mediated oxidation system exhibits excellent performance in the remediation of organic pollutants in real water bodies and its selective degradation compared with conventional free radical-based oxidation systems.

Description

technical field [0001] The invention relates to an application of carbon nanotubes. Background technique [0002] In recent decades, organic pollutants in aquatic environments have become a widespread and serious problem worldwide. In order to develop advanced technologies for the remediation of organic pollutants, many researchers have made great efforts. Among these technologies, persulfate-based advanced oxidation processes have been proposed as an effective method for decomposing organic compounds. Various strategies have been developed to activate persulfates to generate reactive oxygen species (ROS), such as UV radiation, heating, and electrochemical methods. However, these activation techniques require high energy input, which is not cost-effective. Metal-based materials (such as Co 3 o 4 , MnO 2 , CuOFe 3 o 4 ) is an effective catalyst for persulfate activation. However, metal-based catalysts inevitably leached toxic metals, which would lead to secondary pol...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18C02F1/72C02F101/30
CPCB01J21/185C02F1/725C02F2101/30
Inventor 邵鹏辉余水平罗旭彪裴俊俊
Owner NANCHANG HANGKONG UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com