Nitrogen Doped Graphene Generated by Microwave Plasma and Reduction Expansion Synthesis
Menon, Sarath K.
Luhrs, Claudia C.
Arias-Monje, Pedro J.
MetadataShow full item record
This work aimed to produce nitrogen doped graphene from Graphite Oxide (GO) by combining the Expansion Reduction Synthesis (RES) approach, which utilizes urea as doping/reducing agent, with the use of an Atmospheric Plasma torch (Plasma), which provides the high temperature reactor environment known to thermally exfoliate it. The use of this combined strategy (Plasma-RES) was tried in an attempt to increase the surface area of the products. The amount of nitrogen doping was controlled by varying the urea/GO mass ratios in the precursor powders. X-ray diffraction analysis, SEM, TEM, BET surface areas and conductivity measurements of the diverse products are presented. Nitrogen inclusion in the graphene samples was corroborated by the mass spectral signal of the evolved gases generated during thermal programmed oxidation experiments of the products and by EDX analysis. We found that the Plasma-RES method can successfully generate doped graphene in situ as the urea and GO precursors simultaneously decompose and reduce in the discharge zone. When using the same amount of urea in the precursor mixture, samples obtained by Plasma-RES have higher surface area than those generated by RES, however, they contain a smaller nitrogen content.
The article of record as published may be found at http://dx.doi.org/10.1166/nnl.2016.2055
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Palaniuk, D. Ryan (Monterey, California. Naval Postgraduate School, 2012-09);Self standing nitrogen doped graphene sheets were produced by reduction-expansion method, which utilizes graphite oxide (GO) and urea as precursor materials. For comparison, an Atmospheric Microwave Plasma Torch system ...
Reduction Expansion Synthesis as Strategy to Control Nitrogen Doping Level and Surface Area in Graphene Canty, Russell; Gonzalez, Edwin; MacDonald, Caleb; Osswald, Sebastian; Zea, Hugo; Luhrs, Claudia C. (2015-10-16);Graphene sheets doped with nitrogen were produced by the reduction-expansion (RES) method utilizing graphite oxide (GO) and urea as precursor materials. The simultaneous graphene generation and nitrogen insertion reactions ...
Mowry, Michael N. (Monterey, California. Naval Postgraduate School, 2012-09);Graphene, 10 or fewer atomic layers of carbon atoms, has attracted much attention during recent years due to its unique structure and exceptional physical properties. While there exist a wide range of potential applications, ...