Journal Article

Investigating the spectroscopic, photoluminescence, electrochemical impedance, and thermal characteristics of cerium oxide (CeO2) nanorods

Priya, R., Kumar, Nellore Manoj, Devi, N. S. M. P. Latha, Prasad, Somarouthu V. G. V. A., Asatkar, Archana, Rajagopalan, N. R., Albert, Helen Merina, Lohitha, T.

2024

Overview

Cerium dioxide (CeO 2 ) or Ceria nanorods were produced in the current work, using the chemical precipitation approach. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), UV–visible, photoluminescence (PL), and electrochemical impedance spectroscopy (EIS), thermogravimetric and differential thermal analyses (TG/DTA) were used to assess the material characteristics of the produced samples. The XRD results reveal that the CeO 2 nanorods crystallized into the cubic fluorite crystal system. Micro-strain dislocation density, gain size and cell volume of the samples were assessed. XPS examination was performed to verify the chemical states of the constituent elements in CeO 2 nanorods. FTIR spectral analysis was used to investigate chemical bonds and molecular vibrations in CeO 2 nanorods. SEM analysis was used to observe the grain structure of CeO 2 nanorods. UV–visible spectroscopy determined the CeO 2 optical absorption characteristics, bandgap, and Urbach energy. PL study and CIE-chromaticity mapping were used to investigate the light-emitting characteristics of the CeO 2 nanorods. The EIS method was applied to examine the impedance nature of CeO 2 nanorods. TGA/DTA investigations were performed to find the thermal characteristics of CeO 2 nanorods. The study findings indicate the usefulness of CeO 2 nanorods as electrodes and optoelectronic materials. Graphical abstract

• Publisher: Springer Berlin Heidelberg,Springer,Springer Nature B.V
• Subject: Cerium / Cerium oxides / Chemical bonds / Chemical elements / Chemical precipitation / Chemical properties / Chromaticity / Complex Systems / Condensed Matter Physics / Crystal dislocations / Crystallization / Differential thermal analysis / Diffraction / Dislocation density / Electric properties / Electrochemical impedance spectroscopy / Ethylenediaminetetraacetic acid / Fluid- and Aerodynamics / Fluorite / Fourier transforms / Grain structure / Infrared spectroscopy / Investigations / Microstrain / Nanomaterials / Nanorods / Nitrates / Optoelectronics / Oxidation / Photoelectrons / Photoluminescence / Physics / Physics and Astronomy / Regular Article - Mesoscopic and Nanoscale Systems / Scanning electron microscopy / Solid State Physics / Spectrum analysis / X ray photoelectron spectroscopy / X-ray diffraction / X-ray spectroscopy / X-rays