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Reducing emission of carcinogenic by-products in the production of thermally reduced graphene oxide
- Source :
- Green Chemistry. 18:6618-6629
- Publication Year :
- 2016
- Publisher :
- Royal Society of Chemistry (RSC), 2016.
-
Abstract
- In the last decade, researchers have been trying to find out a simple method for large scale fabrication of high-quality graphene. A typical method for the fabrication of gram quantities of graphene materials is the oxidation of graphite to graphite oxide and consequent thermal reduction and exfoliation to reduced graphene oxide at T = ∼1000 °C. Here we show that highly reduced graphene oxide can be prepared at lower temperatures than 1000 °C while keeping the properties of graphene suitable for various electrochemical applications. The high temperature exfoliation of graphite oxide typically leads to the formation of a large amount of highly toxic volatile organic hydrocarbons such as benzene and its derivatives. The amount of volatile aromatic hydrocarbons can be reduced using low temperature exfoliation procedures that we present here. The application of a lower exfoliation temperature is highly beneficial as it also significantly reduces the etching of the graphene skeleton and the formation of toxic aromatic hydrocarbons. The effect of thermal exfoliation was investigated in detail for the temperature range of 400 °C up to 1000 °C under hydrogen as well as nitrogen atmospheres. Our findings show the route for the preparation of thermally reduced graphene oxide suitable for various electrochemical applications without the formation of toxic hydrocarbons as reaction byproducts. These findings are of high importance for the industrial scale production of thermally reduced graphene oxide.
- Subjects :
- Materials science
Hydrogen
Graphene
Inorganic chemistry
Oxide
chemistry.chemical_element
Graphite oxide
02 engineering and technology
Atmospheric temperature range
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Pollution
Exfoliation joint
0104 chemical sciences
law.invention
chemistry.chemical_compound
chemistry
law
Environmental Chemistry
Graphite
0210 nano-technology
Graphene oxide paper
Subjects
Details
- ISSN :
- 14639270 and 14639262
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Green Chemistry
- Accession number :
- edsair.doi...........24b3cc8a8422f2bd535a291bef88e94e