Title:Nitrogen, Sulfur Co-Doped Reduced Graphene Oxide: Synthesis and Characterization
VOLUME: 12 ISSUE: 2
Author(s):Md. Abdul Mannan*, Yudai Hirano, Armando T. Quitain, Michio Koinuma and Tetsuya Kida
Affiliation:Department of Chemistry, Faculty of Science, University of Rajshahi, Rajshahi, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555
Keywords:N, S-codoping, hydrothermal treatment, thiourea, XPS, raman spectroscopy, XRD.
Abstract:
Objective and Method: In this present research, a simple hydrothermal implantation technique
for synthesizing N,S co-doped reduced graphene oxide (NS-r-GO) has been presented in which
thiourea was used as a single-source precursor of N and S atoms.
Results: Maximum N and S atoms, with an atomic percentage of 3.50 and 7.50 (at.%), were achieved
in the GO matrix at the reaction temperature of 250°C. Introduction of N and S atoms into the GO lattice
was confirmed by X-ray photoelectron spectroscopy (XPS). Different chemical bonds such as –C–
S–C, C=O, N–O, and C–N–C have been suggested from the corresponding C1s, N1s, O1s, and S2p
high-resolution XPS spectral analyses.
Conclusion: FT-IR measurement also confirmed the presence of different functional groups as well as
the formation of different bonds such as –OH, –N–H, –C=O, –C–OH, and C-S. XRD and Raman
spectroscopy analyses confirmed the defects structures that arose from the penetration of N and S atoms
into the GO lattice.
