Photoluminescence properties of Eu3+ doped TiO2 nanoparticles
Конференцијски прилог (Објављена верзија)
,
Society of Physical Chemists of Serbia
Метаподаци
Приказ свих података о документуАпстракт
Eu3+ doped TiO2 nanoparticles were synthesized during extended hydrothermal
treatment of TiO2 nanotubes dispersion in the presence of Eu(NO3)3. Eu3+ ions
occupy two different sites of titania nanoparticles having different binding
energies: core octahedral sites and undercoordinated surface sites.
Photoluminescence spectra of Eu3+ doped TiO2 nanoparticles independently of
dopant concentration consist of three characteristic peaks located at λ=543, 596,
and 617 nm attributed to the intra-4f transitions of Eu3+ ion. Removal of excess of
Eu3+ ions from the surface and from the undercoordinated surface sites applying
post synthetic dialysis of the sample affects its photoluminescence spectrum. The
peak intensity at λ=617 nm (5D0→7F2 transition) decreases after dialysis. Such
“self-purification” process of nanoparticles is a consequence of fact that dopant
ions which substitute Ti atoms in the undercoordinated coordination environment
of reconstructed surfaces are weakly bound t...o the anatase lattice.
Извор:
Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry, 2010Издавач:
- Society of Physical Chemists of Serbia
Колекције
Институција/група
VinčaTY - CONF AU - Vranješ, Mila AU - Kuljanin-Jakovljević, Jadranka Ž. AU - Nedeljković, Jovan AU - Šaponjić, Zoran PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9327 AB - Eu3+ doped TiO2 nanoparticles were synthesized during extended hydrothermal treatment of TiO2 nanotubes dispersion in the presence of Eu(NO3)3. Eu3+ ions occupy two different sites of titania nanoparticles having different binding energies: core octahedral sites and undercoordinated surface sites. Photoluminescence spectra of Eu3+ doped TiO2 nanoparticles independently of dopant concentration consist of three characteristic peaks located at λ=543, 596, and 617 nm attributed to the intra-4f transitions of Eu3+ ion. Removal of excess of Eu3+ ions from the surface and from the undercoordinated surface sites applying post synthetic dialysis of the sample affects its photoluminescence spectrum. The peak intensity at λ=617 nm (5D0→7F2 transition) decreases after dialysis. Such “self-purification” process of nanoparticles is a consequence of fact that dopant ions which substitute Ti atoms in the undercoordinated coordination environment of reconstructed surfaces are weakly bound to the anatase lattice. PB - Society of Physical Chemists of Serbia C3 - Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry T1 - Photoluminescence properties of Eu3+ doped TiO2 nanoparticles UR - https://hdl.handle.net/21.15107/rcub_vinar_9327 ER -
@conference{ author = "Vranješ, Mila and Kuljanin-Jakovljević, Jadranka Ž. and Nedeljković, Jovan and Šaponjić, Zoran", year = "2010", abstract = "Eu3+ doped TiO2 nanoparticles were synthesized during extended hydrothermal treatment of TiO2 nanotubes dispersion in the presence of Eu(NO3)3. Eu3+ ions occupy two different sites of titania nanoparticles having different binding energies: core octahedral sites and undercoordinated surface sites. Photoluminescence spectra of Eu3+ doped TiO2 nanoparticles independently of dopant concentration consist of three characteristic peaks located at λ=543, 596, and 617 nm attributed to the intra-4f transitions of Eu3+ ion. Removal of excess of Eu3+ ions from the surface and from the undercoordinated surface sites applying post synthetic dialysis of the sample affects its photoluminescence spectrum. The peak intensity at λ=617 nm (5D0→7F2 transition) decreases after dialysis. Such “self-purification” process of nanoparticles is a consequence of fact that dopant ions which substitute Ti atoms in the undercoordinated coordination environment of reconstructed surfaces are weakly bound to the anatase lattice.", publisher = "Society of Physical Chemists of Serbia", journal = "Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry", title = "Photoluminescence properties of Eu3+ doped TiO2 nanoparticles", url = "https://hdl.handle.net/21.15107/rcub_vinar_9327" }
Vranješ, M., Kuljanin-Jakovljević, J. Ž., Nedeljković, J.,& Šaponjić, Z.. (2010). Photoluminescence properties of Eu3+ doped TiO2 nanoparticles. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry Society of Physical Chemists of Serbia.. https://hdl.handle.net/21.15107/rcub_vinar_9327
Vranješ M, Kuljanin-Jakovljević JŽ, Nedeljković J, Šaponjić Z. Photoluminescence properties of Eu3+ doped TiO2 nanoparticles. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry. 2010;. https://hdl.handle.net/21.15107/rcub_vinar_9327 .
Vranješ, Mila, Kuljanin-Jakovljević, Jadranka Ž., Nedeljković, Jovan, Šaponjić, Zoran, "Photoluminescence properties of Eu3+ doped TiO2 nanoparticles" in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry (2010), https://hdl.handle.net/21.15107/rcub_vinar_9327 .