Tailoring the room temperature ferromagnetism in TiO2 nanoparticles by modulating the concentration of surface oxygen vacancy via La incorporating
Source abstract
Abstract
Abstract La-incorporated TiO2 nanoparticles (Ti1-xLaxO2) were synthesized by a sol-gel method followed by vacuum annealing at 500 °C for 4 h, and were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman scattering spectroscopy, and vibrating sample magnetometer (VSM), respectively. The results indicated that La ions were incorporated with TiO2 without distorting the tetragonal anatase structure, and a small amount of La ions were doped into TiO2 lattice by substituting the surface Ti sites, whereas most of the La atoms evenly distribute into TiO2 matrix in the form of La2O3. The incorporation of La ions with TiO2 matrix modulates the concentration of surface oxygen vacancy in Ti1-xLaxO2 nanoparticles. The room temperature ferromagnetism (RTFM) in Ti1-xLaxO2 nanoparticles varies with the concentration of surface oxygen vacancy due to ferromagnetic coupling interactions between singly ionized oxygen vacancy, thus RTFM can be tailored by modulating the concentration of surface oxygen vacancy via La ions incorporating.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · ZnO doping and properties · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (51)
Show source-provided references
1. Detailed XPS analysis and anomalous variation of chemical state for Mn- and V-doped TiO2 coated on magnetic particles10.1016/j.ceramint.2017.09.071 ↗
2. Ferromagnetism in spin-coated cobalt-doped TiO2 thin films and the role of crystalline phases10.1016/j.jmmm.2017.06.122 ↗
3. Defects related room temperature ferromagnetism in Cu-implanted ZnO nanorod arrays10.1016/j.jallcom.2013.11.205 ↗
4. Defect-rich dopant-free ZrO2 nanostructures with superior dilute ferromagnetic semiconductor properties10.1021/jacs.6b06949 ↗
5. Effect of air annealing on the structure, dielectric and magnetic properties of (Co, Ni) co-doped SnO2 nanoparticles10.1007/s10854-016-5144-7 ↗
6. On the origin of high-temperature in the low-temperature processed Mn-Zn-O system10.1038/nmat1221 ↗
7. Structural and magnetic evolution of Fe-doped TiO2 nanoparticles synthesized by sol-gel method10.1007/s10832-017-0068-z ↗
8. Oxygen vacancy induced phase formation and room temperature ferromagnetism in undoped and Co-doped TiO2 thin films10.1088/0022-3727/45/32/325301 ↗
9. Ferromagnetism of Co-doped TiO2 films prepared by plasma enhanced chemical vapour deposition (PECVD) method10.1088/0022-3727/41/19/195007 ↗
10. Room temperature ferromagnetism in defective TiO2 nanoparticles: role of surface and grain boundary oxygen vacancies10.1063/1.4833562 ↗
11. Correlation between oxygen vacancies and room-temperature ferromagnetism in Ti0.94Co0.03La0.03O2 nanoparticles influenced by different post annealing treatment10.1007/s10971-018-4625-y ↗
12. Oxygen vacancies induced room temperature ferromagnetism and gas sensing properties of Co-doped TiO2 nanoparticles10.1007/s10854-015-3935-x ↗
13. Structural, magnetic and optical properties of Ni-doped TiO2 thin films deposited on silicon (100) substrates by sol-gel process10.1016/j.jallcom.2013.07.105 ↗
14. Investigation of the physical properties of Fe:TiO2-diluted magnetic semiconductor nanoparticles10.1039/C7TC00233E ↗
15. Annealing effects on structure and magnetic properties of Mn-doped TiO210.1016/j.jmmm.2015.11.065 ↗
16. Investigations on the origin of ferromagnetism of Cu doped anatase TiO2 nanotubes10.1016/j.materresbull.2016.09.034 ↗
17. Appearance of room-temperature ferromagnetism in Cu-doped TiO2-δ films10.1103/PhysRevB.72.161313 ↗
18. Magnetic properties of Sm-doped rutile TiO2 nanorods10.1016/j.jallcom.2016.06.112 ↗
19. Magnetic property study of Gd doped TiO2 nanoparticles10.1016/j.jallcom.2014.02.070 ↗
20. The role of lanthanum in the enhancement of photocatalytic properties of TiO2 nanomaterials obtained by calcination of hydrogenotitanate nanotubes10.1016/j.apcatb.2015.08.037 ↗
21. La activated high surface area titania float for the adsorption of Pb(II) from aqueous media10.1039/C7NJ03358C ↗
22. Interplay of dopants and defects in magnetic evolution of La and Fe co-doped TiO2 nanoparticle10.1007/s10971-017-4406-z ↗
23. Synergistic effect of La and Co co-doping on room-temperature ferromagnetism enhancement of TiO2 nanoparticles10.1016/j.ceramint.2018.01.027 ↗
24. Influence of subsurface defects on the surface reactivity of TiO2: water on anatase (101)10.1021/jp910492b ↗
25. Effect of C content and calcination temperature on the photocatalytic activity of C-doped TiO2 catalyst10.1016/j.seppur.2013.05.018 ↗
26. Low temperature preparation and visible light photocatalytic activity of mesoporous carbon-doped crystalline TiO210.1016/j.apcatb.2006.06.015 ↗
27. Synthesis of Z-scheme g-C3N4-Ti3+/TiO2 material: an efficient visible light photoelectrocatalyst for degradation of phenol10.1039/C5CP00639B ↗
28. Lanthanum doped titania decorated with silver plasmonic nanoparticles with enhanced photocatalytic activity under UV-visible light10.1016/j.apsusc.2018.01.291 ↗
29. Visible-light-driven composite La2O3/TiO2 nanotube arrays: synthesis and improved photocatalytic activity10.1016/j.mssp.2015.11.021 ↗
30. Photocatalytic degradation of 2-mercaptobenzothiazole in aqueous La3+-TiO2 suspension for odor control Appl10.1016/j.apcatb.2003.10.003 ↗
31. Role of lanthanum species in improving the photocatalytic activity of titanium dioxide10.1039/C6CY01991A ↗
32. Photocatalytic reduction of CO2 with water vapor on surface La-modified TiO2 nanoparticles with enhanced CH4 selectivity10.1016/j.apcatb.2014.12.011 ↗
33. Synthesis and characterization of La2O3/TiO2-xFx and the visible light photocatalytic oxidation of 4-chloropheno10.1016/j.jhazmat.2010.01.101 ↗
34. CO and soot oxidation activity of doped ceria: influence of dopants10.1016/j.apcatb.2016.03.042 ↗
35. Increasing the oxygen vacancy density on the TiO2 surface by La-doping for dye-sensitized solar cells10.1021/jp106648c ↗
36. An XPS study of metal-support interactions on Pd/SiO2 and Pd/La2O310.1016/0021-9517(84)90200-8 ↗
37. The preparation and characterization of La doped TiO2 nanoparticles and their photocatalytic activity10.1016/j.jssc.2004.05.064 ↗
38. Enhanced efficiency of dye-sensitized solar cells based on Mg and La co-doped TiO2 photoanodes10.1016/j.electacta.2015.07.172 ↗
39. The surface properties and photocatalytic activities of ZnO ultrafine particles10.1016/S0169-4332(01)00365-8 ↗
40. Electrochemical fabrication of lanthanum-doped TiO2 nanotube array electrode and investigation of its photoelectrochemical capability10.1016/j.electacta.2012.12.049 ↗
41. Performances of La-TiO2 nanoparticles as gas sensing material
42. Ni/Ln2Zr2O7 (Ln=La, Pr, Sm and Y) catalysts for methane steam reforming: the effects of A site replacement10.1039/C7CY00004A ↗
43. Visible light responsive TiO2 nanoparticles modified using Ce and La for photocatalytic reduction of CO2: effect of Ce dopant content10.1016/j.apcata.2017.03.022 ↗
44. Extreme deviations from stoichiometry in alumina nanopowders10.1016/j.susc.2014.08.009 ↗
45. Inhomogeneous depletion of oxygen ions in oxide nanoparticles10.1016/j.susc.2015.10.011 ↗
46. Direct observation of tunable surface structure and reactivity in TiO2 nanopowders10.1016/j.susc.2017.08.001 ↗
47. Ferromagnetism of Mn-doped TiO2 nanorods synthesized by hydrothermal method10.1016/j.jallcom.2011.01.086 ↗
48. Growth of oriented single crystalline La-doped TiO2nanorod arrays electrode and investigation of optoelectronic properties for enhanced photoelectrochemical activity10.1039/c3ra40746b ↗
49. Significant room temperature ferromagnetism in PAA thin films10.1039/c3tc30462k ↗
50. Size effects on the photophysical properties of colloidal anatase TiO2 particles: size quantization or direct transitions in this indirect semiconductor?10.1021/j100045a026 ↗
51. Ferromagnetism as a universal feature of nanoparticles of the otherwise nonmagnetic oxides10.1103/PhysRevB.74.161306 ↗