2017 |
Diaz, C; Valenzuela, M L; Garcia, C; Campa, De La R; Soto, A P Solid-State Synthesis of Pure and Doped Lanthanide Oxide Nanomaterials by Using Polymer Templates. Study of Their Luminescent Properties Artículo de revista Materials Letters, 209 , pp. 111-114, 2017, ISSN: 0167-577x. Resumen | Enlaces | BibTeX | Etiquetas: chitosan, europium-doped, facile lanthanide nanocrystals, oxide, polymer-templated, scale supracrystals, synthesis, y2o3-eu @article{RN360, title = {Solid-State Synthesis of Pure and Doped Lanthanide Oxide Nanomaterials by Using Polymer Templates. Study of Their Luminescent Properties}, author = { C. Diaz and M.L. Valenzuela and C. Garcia and R. De La Campa and A.P. Soto}, url = {/brokenurl#<Go to ISI>://WOS:000413124300029}, doi = {10.1016/j.matlet.2017.07.112}, issn = {0167-577x}, year = {2017}, date = {2017-01-01}, journal = {Materials Letters}, volume = {209}, pages = {111-114}, publisher = {2017 Elsevier B.V.}, abstract = {We herein reports the solid-state synthesis of pure and doped lanthanide oxides by using polymeric materials (chitosan and polystyrene-co-poly(4-vinylpyridine), PS-co-P4VP) as a solid template. Lanthanide nanomaterials are prepared in two-step methodology combining both solution and solid procedures. The first involves the synthesis of macromolecular complexes Chitosan.[M(NO3)(3)//M'(NO3)(3)] and PS-co-P4VP.[M(NO3)(3)//M'(NO3)(3)] (M = La, Pr; M' = Eu); and the second consists in the pyrolysis at 800 degrees C of the as-prepared solid macromolecular complexes. The pyrolytic products were characterized by X-ray diffraction, SEM-EDS, TEM, and HR-TEM. Whereas similar particle size distribution in average (ca. 25 nm) was observed with both polymer templates, a higher degree of crystallinity was obtained by using PS-co-P4VP. Importantly, the emission luminescent intensity of the doped pyrolytic oxides, La2O3//Eu2O3 and PrO1,83//Eu2O3, is not quenched despite the presence of dopant. Thus, the as-prepared doped oxides exhibit an enhanced Eu3+ emission originated from the D-5(0) -> F-7(n) (n = 1, 2, 3, 4) transitions, which is more intense for the PS-co-P4VP template. This synthetic methodology base on the pyrolysis of polymeric complexes can be considered as a general and straightforward methodology leading to pure and Eu3+-doped nanostructured lanthanide oxide.}, keywords = {chitosan, europium-doped, facile lanthanide nanocrystals, oxide, polymer-templated, scale supracrystals, synthesis, y2o3-eu}, pubstate = {published}, tppubtype = {article} } We herein reports the solid-state synthesis of pure and doped lanthanide oxides by using polymeric materials (chitosan and polystyrene-co-poly(4-vinylpyridine), PS-co-P4VP) as a solid template. Lanthanide nanomaterials are prepared in two-step methodology combining both solution and solid procedures. The first involves the synthesis of macromolecular complexes Chitosan.[M(NO3)(3)//M'(NO3)(3)] and PS-co-P4VP.[M(NO3)(3)//M'(NO3)(3)] (M = La, Pr; M' = Eu); and the second consists in the pyrolysis at 800 degrees C of the as-prepared solid macromolecular complexes. The pyrolytic products were characterized by X-ray diffraction, SEM-EDS, TEM, and HR-TEM. Whereas similar particle size distribution in average (ca. 25 nm) was observed with both polymer templates, a higher degree of crystallinity was obtained by using PS-co-P4VP. Importantly, the emission luminescent intensity of the doped pyrolytic oxides, La2O3//Eu2O3 and PrO1,83//Eu2O3, is not quenched despite the presence of dopant. Thus, the as-prepared doped oxides exhibit an enhanced Eu3+ emission originated from the D-5(0) -> F-7(n) (n = 1, 2, 3, 4) transitions, which is more intense for the PS-co-P4VP template. This synthetic methodology base on the pyrolysis of polymeric complexes can be considered as a general and straightforward methodology leading to pure and Eu3+-doped nanostructured lanthanide oxide. |
2017 |
Solid-State Synthesis of Pure and Doped Lanthanide Oxide Nanomaterials by Using Polymer Templates. Study of Their Luminescent Properties Artículo de revista Materials Letters, 209 , pp. 111-114, 2017, ISSN: 0167-577x. |