Progress of Cryogenics and Isotopes Separation , ISSN: 1582-2575
2019, Volume 22, Issue 2
Pages 21-30

Facile synthesis of nitrogen-doped graphene via eco-friendly microwave-assisted process

Adriana Marinoiu 1* , Iuliana Morjan 2 , Simona Nica 3 , Mircea Raceanu 1 , Felicia Bucura 1 , Stanica Enache 1 , Elena Carcadea 1

1 National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, PO Box Râureni 7, 240050, Râmnicu Vâlcea, Romania
2 National Institute for Laser, Plasma and Radiation Physics, 409, Atomistilor Street, PO Box MG-36, 077125 Magurele, Bucharest, Romania
3 “C. D. Nenitzescu” Institute of Organic Chemistry, Romanian Academy, Splaiul Independentei, no. 202 B, Bucharest, Romania

*Corresponding author: Adriana Marinoiu, E-mail:,

Received 17 September 2019Received in revised form 10 October 2019Accepted 20 October 2019Available online 20 November 2019


This study has evaluated the synthesis of nitrogen doped graphene via a facile protocol employing the eco-friendly microwave-assisted process (MW). The nitrogen doped graphene was synthesized by MW route utilizing ammonia as nitrogen precursor and ethanol as reduction agent in the presence of graphene oxide (GO). Rapid thermal reduction of NH4+ was achieved as nitrogen-doped graphene under the condition of microwave irradiation (800 W, 15 min). The microstructural properties of prepared samples were examined. Fourier transform infrared (FT-IR) spectroscopy, Raman, Brunauer-Emmett-Teller (BET) surface area analysis, X-ray photoelectron spectroscopy (XPS) surface composition, elemental analysis were performed to characterize the synthesized nitrogen-doped graphene. The nitrogen content of as-prepared nitrogen-doped reduced graphene oxide (N/rGO) was 2.98 wt %. The performed characterization demonstrated that N/rGO has been successfully prepared by using an eco-friendly method, which brought important advantages (facile, simple, quick, inexpensive technique).


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  • Keywords

    nitrogen-doped graphene, microwave, ammonia

    Tag search nitrogen-doped graphene microwave ammonia