Sol–gel synthesis of silica composited flower-like microspheres using trivalent europium tartrate as a template
Source abstract
Abstract
Silica composited flower-like microspheres were synthesized by a facile sol–gel synthesis method using trivalent europium tartrate (Eu3+-TTA) as the template. Fourier transform infrared spectra (FT-IR) X-ray photoelectron spectroscopy (XPS), X-ray diffraction analyses (XRD), Energy-dispersive X-ray (EDS) spectroscopy, scanning electron microscopy (SEM), thermogravimetry-differential thermal analysis (TG-DTA) were employed to characterize the composition, structure, and morphology of the products. The microspheres were composed of nanosheets as petals. Size of the spherical shape varied with the amount of tetraethoxysilane (TEOS) addition. As the addition of TEOS decreased the diameters of microspheres increased, and it was proven that Eu3+ ions existed in the form of Si–O–Eu covalent bond. Furthermore, a sol–gel templated mechanism is proposed to interpret the formation process of flower-like microspheres shape. The hollow-liked microspheres were obtained by a following calcination process. In addition, photoluminescent emission of the products was further discussed, which indicated that Eu3+ ions exhibit characteristic luminescent emissions and their luminescent intensity after calcination is higher than that of as-synthesized sample. The silica composited microspheres with flower-like shape were prepared successfully by a facile sol–gel synthesis method using trivalent europium tartrate (Eu3+-TTA) as a template. A sol–gel templated mechanism was proposed to interpret the formation process of flower-like shape microspheres. During this process, Eu3+-tartrate was supposed to form supramolecular template by self-assembly and coordinate with silica oligomer by means of intermolecular interactions. Furthermore, it was indicated that Eu3+ exhibits strong characteristic luminescence in this system.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mesoporous Materials and Catalysis · Polyoxometalates: Synthesis and Applications · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Liu X, Lin C, Lin J (2007) White light emission from Eu3+ in CaIn2O4 host lattices. Appl Phys Lett 90:08190410.1063/1.2539632 ↗
2. Sohn K-S, Shin N (2002) Energy transfer between Tb3+ ions in Y4−xTbx Al2O9 phosphor. Electrochem Solid-State Lett 5:H21–H2310.1149/1.1504041 ↗
3. Song Y, Xu X, Zou H, Sheng Y, You H (2012) MSi2O2−δN2+ 2/3δ:Eu (M=Sr, Ba) phosphors for field emission displays. J Alloy Compd 513:86–9010.1016/j.jallcom.2011.09.090 ↗
4. Yue MB, Xue T, Jiao WQ, Wang YM, He M-Y (2011) CTAB-directed synthesis of mesoporous γ-alumina promoted by hydroxy carboxylate: the interplay of tartrate and CTAB. Solid State Sci 13:409–41610.1016/j.solidstatesciences.2010.12.003 ↗
5. Miura K, Suzuki T, Hanaizumi O (2015) Photoluminescence properties of europium and cerium co-doped tantalum-oxide thin films prepared using co-sputtering method. J Mater Sci Chem Eng 03:30–34
6. Chen L, Lei X, Chen G, Zhong R, Lan S, Liang X, Lu J (2015) Synthesis, characterization and photophysical properties of phenanthroline derivatives and their europium complexes. J South-Cent Univ Natl 18:1315–1322
7. Varma C, Yafet Y (1976) Magnetic susceptibility of mixed-valence rare-earth compounds. Phys Rev B 13:295010.1103/PhysRevB.13.2950 ↗
8. Luneau D, Rey P (2005) Magnetism of metal-nitroxide compounds involving bis-chelating imidazole and benzimidazole substituted nitronyl nitroxide free radicals. Coord Chem Rev 249:2591–261110.1016/j.ccr.2005.06.008 ↗
9. Gao Z, Shi Y (2010) Suppressed formation of CO2 and H2O in the oxidative coupling of methane over La2O3/MgO catalyst by surface modification. J Nat Gas Chem 19:173–17810.1016/S1003-9953(09)60047-5 ↗
10. Willbold M (2016) Europium. Living Reference Work Entry, Encyclopedia of Geochemistry, Part of the series Encyclopedia of Earth Sciences Series, pp 1–310.1007/978-3-319-39193-9_99-1 ↗
11. Si L, Yue L, Jin D (2011) Solvothermal synthesis of flower‐like lanthanum tartrate and lanthanum oxide microspheres in ethanol–water mixed system. Cryst Res Technol 46:1149–115410.1002/crat.201100168 ↗
12. Wang Y, Liu G-X, Chen Y-C, Wang K-B, Meng S-G (2010) Two novel lanthanum–tartrate complexes with distinctive new topologies: hydrothermal synthesis and crystal structures. Inorg Chim Acta 363:2668–267210.1016/j.ica.2010.03.076 ↗
13. And ELL, Wachs IE (2015) In situ spectroscopic investigation of the molecular and electronic structures of SiO2 supported surface metal oxides. J Phys Chem C 111:14410–14425
14. Soga K (2015) Highly isospecific, immobilized zirconocene catalysts supported on chemically modified SiO2. Macromol Symp 89:249–25810.1002/masy.19950890125 ↗
15. Tang F, Li L, Chen D (2012) Mesoporous silica nanoparticles: synthesis, biocompatibility and drug delivery. Adv Mater 24:1504–153410.1002/adma.201104763 ↗
16. Li L-L, Fang C-J, Sun H, Yan C-H (2008) Hierarchical self-assembly of pH-responsive nanocomposites with molecular-scale and mesoscale periodicities. Chem Mater 20:5977–598610.1021/cm800293y ↗
17. Buso D, Nairn KM, Gimona M, Hill AJ, Falcaro P (2016) Fast synthesis of MOF-5 microcrystals using Sol−Gel SiO2 nanoparticles. Chem Mater 23:929–93410.1021/cm101519s ↗
18. Deng X, Qin P, Luo M, Shao E, Zhao H, Yang X, Wang Y, Shen H, Jiao Z, Wu M (2013) Mesoporous silica coating on carbon nanotubes: layer-by-layer method. Langmuir 29:6815–682210.1021/la400690p ↗
19. Duan L, Chen M, Zhou S, Wu L (2009) Synthesis and characterization of poly (N-isopropylacrylamide)/silica composite microspheres via inverse Pickering suspension polymerization. Langmuir 25:3467–347210.1021/la8041617 ↗
20. Firdous A, Quasim I, Ahmad MM, Kotru PN (2009) Studies on gel-grown pure and strontium-modified lanthanum tartrate crystals. J Cryst Growth 311:3855–386210.1016/j.jcrysgro.2009.05.034 ↗
21. Haranath D, Gandhi N, Sahai S, Husain M, Shanker V (2010) Highly emissive and low refractive index layers from doped silica nanospheres for solar cell applications. Chem Phys Lett 496:100–10310.1016/j.cplett.2010.07.015 ↗
22. Hunag W-H, Shieh J-M, Lien Y-C, Jhou K-J, Tu C-H, Wang C, Shen C-H, Hsieh W-H, Kuo H-C, Pan F-M (2012). Novel solar down-conversion luminescent and switchable interface polarization material by europium doped Si–O polar structures, In Quantum Electronics and Laser Science Conference, Optical Society of America, p JTh4J. 510.1364/CLEO_AT.2012.JTh4J.5 ↗
23. Uwamino Y, Ishizuka T, Yamatera H (1984) X-ray photoelectron spectroscopy of rare-earth compounds. J Electron Spectrosc Relat Phenom 34:67–7810.1016/0368-2048(84)80060-2 ↗
24. Her J-L, Lin C-W, Chang K-Y, Pan T-M (2012). Label-free detection of creatinine using a disposable poly-N-isopropylacrylamide as an encapsulating creatinine deiminase based Eu 2 Ti 2 O 7 electrolyte-insulator-semiconductors. Int J Electrochem Sci 710.1016/S1452-3981(23)13347-5 ↗
25. Shui M, Song Y, Ren Y, Wang X (2010) Structural analysis of amorphous silica prepared by water glass-based precursors and its thermal, spectral characterization. Phys B: Condens Matter 405:1316–132010.1016/j.physb.2009.11.076 ↗
26. Chen W, Sammynaiken R, Huang Y (2000) Photoluminescence and photostimulated luminescence of Tb 3+ and Eu 3+ in zeolite-Y. J Appl Phys 88:1424–143110.1063/1.373834 ↗
27. Wan N, Xu J, Lin T, Zhang X, Xu L (2008). Energy transfer and enhanced luminescence in metal oxide nanoparticle and rare earth codoped silica. Appl Phys Lett 9210.1063/1.2936842 ↗
28. Tagaya M, Ikoma T, Yoshioka T, Motozuka S, Xu Z, Minami F, Tanaka J (2011) Synthesis and luminescence properties of Eu (III)-doped nanoporous silica spheres. J Colloid Interface Sci 363:456–46410.1016/j.jcis.2011.07.066 ↗
29. Nassar EJ, Ciuffi KJ, Ribeiro SJL, Messaddeq Y (2003) Europium incorporated in silica matrix obtained by sol-gel: luminescent materials. Mater Res 6:557–56210.1590/S1516-14392003000400023 ↗
30. Berry A, King T (1989) Characterisation of doped sol–gel derived silica hosts for use in tunable glass lasers. J Phys D Appl Phys 22:141910.1088/0022-3727/22/10/001 ↗