Fabrication and Characterization of Lanthanide-TiO₂ Nanotube Composites  

作　　者：Khadijah M. Emran Hessah E. Alanazi Khadijah M. Emran;Hessah E. Alanazi(Department of Chemistry, College of Science, Taibah University, Madinah, KSA;Department of Chemistry, College of Science and Art, Al Jouf University, Qurayyat, KSA)

机构地区：[1]Department of Chemistry, College of Science, Taibah University, Madinah, KSA [2]Department of Chemistry, College of Science and Art, Al Jouf University, Qurayyat, KSA

出　　处：《Open Journal of Physical Chemistry》2023年第2期13-28,共16页物理化学期刊（英文）

摘　　要：Titanium dioxide (TiO₂) doped with neodymium (Nd) and/or Gadolinium (Gd) rare-earth elements were fabricated into nanotubes via the hydrothermal method in a KOH solution and in-situ doping. Titanium dioxide nanotubes (TNTs) and in-situ Nd-doped and/or Gd-doped TNTs were characterized with transmission and scanning electron microscopy, energy-dispersive X-ray analysis, X-ray diffraction, Raman spectroscopy, and Fourier-transform infrared spectroscopy. Morphologies indicated a network of aggregated nanotubes. The phase and composition analyses revealed that the lanthanide TNTs had anatase phases with Nd and/or Gd nanoparticles in the TNT lattice. The nanoparticles were uniformly deposited on the surface because of hydroxyl groups on the TNT surfaces, resulting in a very high loading density. The outer diameter and the length of the TNTs increased with doping. The mechanisms for the formation of multiwall TNTs are discussed.Titanium dioxide (TiO₂) doped with neodymium (Nd) and/or Gadolinium (Gd) rare-earth elements were fabricated into nanotubes via the hydrothermal method in a KOH solution and in-situ doping. Titanium dioxide nanotubes (TNTs) and in-situ Nd-doped and/or Gd-doped TNTs were characterized with transmission and scanning electron microscopy, energy-dispersive X-ray analysis, X-ray diffraction, Raman spectroscopy, and Fourier-transform infrared spectroscopy. Morphologies indicated a network of aggregated nanotubes. The phase and composition analyses revealed that the lanthanide TNTs had anatase phases with Nd and/or Gd nanoparticles in the TNT lattice. The nanoparticles were uniformly deposited on the surface because of hydroxyl groups on the TNT surfaces, resulting in a very high loading density. The outer diameter and the length of the TNTs increased with doping. The mechanisms for the formation of multiwall TNTs are discussed.

关 键 词：TiO₂ Nanotube Lanthanide Doped HYDROTHERMAL XRD TEM Raman Spectroscopy 

分 类 号：TB3[一般工业技术—材料科学与工程]