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

A kind of silver-modified tio2/graphene/bentonite composite material and preparation method thereof

A composite material and graphene technology, applied in chemical instruments and methods, other chemical processes, chemical/physical processes, etc., can solve the problems of complex preparation process and expensive raw materials, and achieve simple preparation method, low material cost, and uniform distribution of Ag Effect

Active Publication Date: 2018-07-20
JIANGSU CHENGGONG CONSTR TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the complex preparation process of photocatalytic materials in the prior art and the defects of expensive raw materials, and provide a silver-modified TiO 2 / Graphene / bentonite composite material and preparation method thereof

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
  • A kind of silver-modified tio2/graphene/bentonite composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A silver-modified TiO 2 / The preparation method of graphene / bentonite composite material, the steps are as follows: (1) adding hydrazine hydrate to the graphene oxide suspension (graphene oxide is uniformly dispersed in aqueous solution, the same below), to control the quality of hydrazine hydrate and graphene oxide The ratio is 1:1.2, and the pH of the reaction system is adjusted to 7, and the temperature of the reaction system is guaranteed to be 60°C, and then the silver nitrate solution is added dropwise at 30 drops / min, and ultrasonic vibration is performed at the same time;

[0021] (2) Add bentonite suspension to the reaction system after the addition of the silver nitrate solution is completed, and ultrasonically vibrate at the same time, and the ultrasonic oscillation time is 5 minutes;

[0022] (3) Dry the intermediate product obtained in step (2) and then calcine it in an inert atmosphere at 700°C to finally obtain silver-modified TiO 2 / graphene / bentonite c...

Embodiment 2

[0024] A silver-modified TiO 2 / The preparation method of graphene / bentonite composite material, the steps are as follows: (1) Add hydrazine hydrate to the graphene oxide suspension, control the mass ratio of hydrazine hydrate and graphene oxide to be 1:1, and adjust the pH of the reaction system to be 10 , to ensure that the temperature of the reaction system is 90 ° C, and then dropwise add silver nitrate solution to it at 20 drops / min, while ultrasonically oscillating;

[0025] (2) After the addition of the silver nitrate solution is completed, add the bentonite suspension to the reaction system while ultrasonically vibrating for 10 minutes;

[0026] (3) Dry the intermediate product obtained in step (2) and then calcine it under inert gas at 600°C to finally obtain silver-modified TiO 2 / graphene / bentonite composite material, through the addition of graphene oxide, bentonite and silver nitrate, the mass ratio of bentonite to graphene is 50:5, the mass ratio of silver to gr...

Embodiment 3

[0028] A silver-modified TiO 2 / The preparation method of graphene / bentonite composite material, the steps are as follows: (1) Add hydrazine hydrate to the graphene oxide suspension, control the mass ratio of hydrazine hydrate and graphene oxide to be 1:1.5, and adjust the pH of the reaction system to be 10 , to ensure that the temperature of the reaction system is 100 ° C, and then dropwise add silver nitrate solution to it at 25 drops / min, while ultrasonically oscillating;

[0029] (2) Add bentonite suspension to the reaction system after the addition of the silver nitrate solution is completed, and ultrasonically vibrate at the same time, and the ultrasonic oscillation time is 4min;

[0030] (3) Dry the intermediate product obtained in step (2) and then calcine it under inert gas at 800°C to finally obtain silver-modified TiO 2 / graphene / bentonite composite material, the mass ratio of bentonite to graphene is 50:3, the mass ratio of silver to graphene is 18:1 through the a...

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 belongs to the field of sewage treatment. It is a silver-modified TiO2 / graphene / bentonite composite material, in which the mass ratio of bentonite to graphene is 50:1-5, and the mass ratio of silver to graphene is 15-20:1. The preparation method of the above-mentioned silver-modified TiO2 / graphene / bentonite composite material, the steps are as follows: (1) Add hydrazine hydrate and titanium dioxide solution to the graphene oxide suspension, and then dropwise add silver nitrate solution thereto, and perform ultrasonic vibration at the same time ; (2) After the dropwise addition of the silver nitrate solution is completed, add the bentonite suspension to the reaction system while ultrasonic vibrating; (3) Dry the above-obtained intermediate product and then calcine it under an inert atmosphere to finally obtain the composite material. The preparation method in this application is simple, the materials are cheap and easy to obtain, and it not only has the adsorption effect of heavy metals, but also has a photocatalytic effect, and can effectively degrade organic pollutants.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a silver-modified TiO 2 / Graphene / bentonite composite material and preparation method thereof. Background technique [0002] With the development of my country's economy and the advancement of science and technology, a large amount of industrial wastewater, domestic sewage and various mining wastewater are continuously released into the natural environment, causing my country to face serious water pollution problems. Due to the characteristics of high toxicity, wide distribution, easy accumulation in organisms and long duration of damage, heavy metal pollution has caused serious impacts on aquatic organisms and human health. Therefore, how to remove heavy metal pollution in water has become a concern of environmental protection researchers. The treatment methods of heavy metals in wastewater that have been developed and applied mainly include physical methods, chemical methods, ...

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): B01J21/18B01J20/20B01J20/30
CPCB01J20/06B01J20/12B01J20/20B01J21/18B01J2220/42B01J35/39
Inventor 王建新黄小红蒋晓曙
Owner JIANGSU CHENGGONG CONSTR TECH
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