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- Title
Synthesis and Characterization of CeO<sub>2</sub>, Gr and rGO Nanocomposites at Different Temperature.
- Authors
Kumar, Pankaj; Ratan, Jatinder Kumar; Divya, Neetu
- Abstract
Novel cerium oxide (CeO2) nanoparticles (NPs), CeO2-Gr and CeO2-rGO nanocomposites with graphite (Gr), and different degrees (100°C, 300°C, and 500°C) of reduced graphene oxide (rGO) have been synthesized via a one-pot hydrothermal process in the presence of cetyltrimethylammonium bromide and aqueous ammonia. The obtained crystalline size of the CeO2 NPs was 27.19 nm from the XRD analysis, and this decreased to 10.46 nm in CeO2-rGO500. FTIR spectroscopy confirmed the presence of hydroxyl, carboxyl, and epoxy functional groups in the layers of the obtained nanocomposites. TGA/DSC analysis revealed attached CeO2 NPs over graphite and different degrees of rGO nanomaterials. The atomic concentrations of C1s, O1s, and Ce3d in prepared nanocomposites were 29.92%, 52.65%, and 17.43%, respectively. Huge enhancement was achieved for the CeO2-rGO500 nanocomposite in the atomic concentration of C1s (66.55%) and Ce3d (27.28%). The anchoring CeO2 nanocrystal on the rGO lattice structure dispersed uniformly and prevented the agglomeration over the thin film of carbon atoms, also enhancing the physicochemical properties, such as electric, thermal, morphology, and redox. However, the structural and physiochemical behavior of CeO2 NPs, CeO2-Gr, and CeO2-rGO nanocomposite materials is still controversial.
- Subjects
NANOCOMPOSITE materials; GRAPHITE oxide; CARBON films; CERIUM oxides; FOURIER transform infrared spectroscopy; GRAPHENE oxide; CETYLTRIMETHYLAMMONIUM bromide
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2022, Vol 74, Issue 5, p1828
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-021-05084-0