Exploring the thermal and photochemical properties of terbium-doped CeO2: a comprehensive assessment

Özlü Torun H., Kırkgeçit R., Öztürk E., Kılıç Dokan F., Kırkgeçit Aksoy N.

Spectroscopy Letters, 2025 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2025
  • Doi Number: 10.1080/00387010.2025.2501241
  • Journal Name: Spectroscopy Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Analytical Abstracts, Applied Science & Technology Source, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: CeO2, photocatalysis, photoluminescence, terbium
  • Kayseri University Affiliated: Yes

Abstract

Terbium-enriched CeO2 compounds were synthesized by citric acid sol-gel method. Our primary focus is on morphological and structural design, as well as reconciling the thermo- and photochemical properties inherent to the original structure. The crystal properties and surface morphologies of the synthesized compounds were analyzed using X-ray diffraction and field emission scanning electron microscopy, respectively. Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller analyses were conducted to study the bond structures and surface areas. In addition, excitation and emission spectra were obtained using a photoluminescence spectrophotometer. TG-DTA analysis was also performed to examine the thermal properties. A cubic crystal lattice compound was obtained. Rhodamine B (RhB) and methylene blue (MB) were used in dye degradation studies for 5 mg and 20 mg of photocatalyst compounds. The compound with the highest efficiency was found to be MB at 86% for 5 mg of photocatalyst compounds. The band gap of the 20TbCe compound was calculated as 2.26 eV. According to the photoluminescence results, green radiation was obtained.