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

A kind of preparation method and application of bioi-reduced graphene composite photocatalyst

A catalyst, graphene technology, applied in chemical instruments and methods, botanical equipment and methods, physical/chemical process catalysts, etc., can solve problems such as unfavorable tight binding, and achieve excellent antibacterial activity, good dispersion, and simple preparation method. workable effect

Active Publication Date: 2019-03-15
SHANGHAI NORMAL UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method in this literature uses sodium iodide or potassium iodide to react with bismuth nitrate, which is easy to form BiOI crystals separated from graphene, which is not conducive to the close combination of the two.

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 preparation method and application of bioi-reduced graphene composite photocatalyst
  • A kind of preparation method and application of bioi-reduced graphene composite photocatalyst
  • A kind of preparation method and application of bioi-reduced graphene composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Mix 1 g of commercially available graphene with 1 g of NaNO 3 Dissolve in 40mL H 2 SO 4 , stirred for one hour under ice bath, then added 5g KMnO 4 Stir for 48 hours. Add 100mL 5wt% H 2 SO 4 The solution was then stirred at 60 °C for 2 hours and 10 mL of 30 wt% H was added 2 o 2 and 1.0L deionized water. The precipitate was first washed with 5mol / L HCl, and then washed to neutrality with ultrapure water (the supernatant taken out was mixed with BaCl 2 reaction without precipitation), then put into the refrigerator to freeze for 24 hours, and then vacuum freeze-dry to obtain oxidized graphene. Weigh 0.12g Bi(NO 3 ) 3 ·5H 2 O was dissolved in 5.0mL ethylene glycol and 35mL isopropanol mixed solution, 0.146g ionic liquid C 10 h 19 IN 2 Dissolve in the above system and stir vigorously for 1.5 hours. At the same time, 20 mg of the above graphene was added to 20 mL of ethanol and sonicated for 1 hour to obtain a homogeneous solution of graphene flakes, which wa...

Embodiment 2

[0049] Change the amount of GO to 10 mg, and the rest of the content is the same as that described in Example 1 to obtain the visible light catalyst of this example. figure 1 The XRD spectrum of this example shows that the obtained BiOI is a pure tetragonal BiOI crystal (JCPDS 10-0445), and no impurities are formed. The specific surface area of ​​the present embodiment is 42m 2 / g. Figure 6-Figure 7 This example has a certain catalytic activity in the catalytic degradation of methyl orange under visible light. Figure 8 In this example, under visible light, it has a certain photocatalytic killing performance on Acinetobacter baumannii.

Embodiment 3

[0051] Change the amount of GO to 30 mg, and the rest of the content is the same as that described in Example 1 to obtain the visible light catalyst of this example. figure 1 The XRD spectrum of this example shows that the obtained BiOI is a pure tetragonal BiOI crystal (JCPDS 10-0445), and no impurities are formed. The specific surface area of ​​the present embodiment is 139m 2 / g. Figure 6-Figure 7 This example has a certain catalytic activity in the catalytic degradation of methyl orange under visible light. Figure 8 In this example, under visible light, it has a certain photocatalytic killing performance on Acinetobacter baumannii.

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of photocatalytic materials, specifically a method for preparing BiOI-reduced graphene (RGO) visible light catalyst using supercritical alcohol thermal technology and its application in degrading pollutants and bacteriostatic sterilization. The present invention uses ethanol as the reducing agent to simply and quickly prepare BiOI-RGO through a supercritical alcohol-thermal process. The raw materials used in the preparation method of the present invention are simple and easy to obtain, and the cost is low. The preparation method is simple and feasible, avoiding the generation of polluting by-products and reducing costs. The prepared BiOI-RGO visible light catalyst has good dispersion and exhibits very good photocatalysis. Activity, good stability, recyclability, and good practical application prospects.

Description

technical field [0001] The invention relates to the field of semiconductor photocatalytic materials, in particular to a method for preparing a sheet-like BiOI-reduced graphene (BiOI-RGO) composite visible light catalyst synthesized by alcohol thermal reduction technology and its application. Background technique [0002] Using semiconductor photocatalysts such as TiO 2 The application of environmental pollution control has attracted more and more attention. However, TiO 2 The wide bandgap allows it to be excited only by ultraviolet light, which only accounts for a small part of the solar spectrum (less than 5%), and the rapid recombination of photogenerated carriers also makes its quantum efficiency very low. How to obtain visible photocatalysts that can make full use of sunlight, be excited in the visible spectral range, and photoinduced carrier separation has become an important research field. [0003] Oxyhalides BiOX (X=Cl, Br, I) belong to the main group of multimeta...

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): B01J27/06A01N59/16A01P3/00A01P1/00C02F1/30
CPCA01N59/16C02F1/30B01J27/06C02F2103/30B01J35/39
Inventor 霍宇凝尹海波罗柳林杨国详朱慧娟高媛刘文华李和兴
Owner SHANGHAI NORMAL 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