Synthesis and Characterization of Ruthenium Doped TiO_2 Nanofibers
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Ruthenium(Ru)-doped TiO_2 nanofibers were prepared using electrospun Ru-TiO_2/poly(vinyl acetate) (PVAc) fibers and subsequent annealing for 1 h at temperatures in the range of 500℃ to 1000℃ in air. The properties of the Ru-TiO_2 fibers were characterized as a function of the Ru content and calcination temperature using X-ray diffraction, thermal gravimetry with differential scanning calorimetry, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and viscometer, pycnometer and dynamic tensiometer measurements. Although the diameter of the fiber decreased slightly with increasing calcination temperature, no dramatic changes were observed with respect to the ruthenium content. The XRD and FT-IR results revealed that anatase phase and ruthenium metal began to be formed after calcination at temperatures above 500℃. Anatase and rutile phases and ruthenium metal coexisted in the fibers calcined above 600℃. No anatase phase was detected in the fibers containing ruthenium when they were calcined at 1000℃. The morphology of the fibers changed from smooth and uniform to porous with increasing temperature. The experimental results suggest that the calcination temperature and Ru content were influential in determining the morphology and structure of the fibers.
Abstract
Ruthenium(Ru)-doped TiO_2 nanofibers were prepared using electrospun Ru-TiO_2/poly(vinyl acetate) (PVAc) fibers and subsequent annealing for 1 h at temperatures in the range of 500℃ to 1000℃ in air. The properties of the Ru-TiO_2 fibers were characterized as a function of the Ru content and calcination temperature using X-ray diffraction, thermal gravimetry with differential scanning calorimetry, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and viscometer, pycnometer and dynamic tensiometer measurements. Although the diameter of the fiber decreased slightly with increasing calcination temperature, no dramatic changes were observed with respect to the ruthenium content. The XRD and FT-IR results revealed that anatase phase and ruthenium metal began to be formed after calcination at temperatures above 500℃. Anatase and rutile phases and ruthenium metal coexisted in the fibers calcined above 600℃. No anatase phase was detected in the fibers containing ruthenium when they were calcined at 1000℃. The morphology of the fibers changed from smooth and uniform to porous with increasing temperature. The experimental results suggest that the calcination temperature and Ru content were influential in determining the morphology and structure of the fibers.
참고문헌 (22)
- Deuk Yong Lee, "Titania Nanofibers Prepared by Electrospinning", Journal of the Korean Physical Society, 48(6), pp.1686~1690 (2006), 한국물리학회
- T. Phan, "The role of rare earth metals in lanthanide-incorporated mesoporous titania", Micro. Meso. Mater, 119, pp.290~298 (2009)
- H. Choi, "Photodecomposition and bactericidal effects of TiO2 thin films prepared by a magnetron sputtering", J. Mater. Sci, 39, pp.5695~5699 (2004)
- Y. Song, "Hydrophilicity and bactericidal effects of TiO2 thinfilms prepared by RF sputtering", Mater. Sci. Forum, 449, pp.1261~1264 (2005)
- S. Madhugiri, "Electrospun mesoporous titanium dioxide fibers", Micro. Meso. Mater, 69, pp.77~83 (2004)
- P. Viswanathamurthi, "Ruthenium doped TiO2 fibers by electrospinning", Inorg. Chem. Comm, 7, pp.679~682 (2004)
- D.S. Bae, "Fabrication and characterization of Ru-doped TiO2 composite membranes by the sol-gel process", Mater. Lett, 33, pp.101~105 (1997)
- C. Sanchez, "Chimie douce:A land of opportunities for the designed construction of functional inorganic and hybrid organic-inorganic nanomaterials", C.R. Chimie, 13, pp.3~39 (2010)
- M. Bognitzki, "Nanostructured fibers via electrospinning", Adv. Mater, 13, pp.70~72 (2001)
- Y. Wang, "Synthesis of lead zirconate titanate nanofibers and the Fourier-transform infrared characterization of their metallo-organic decomposition process", Nanotechnology, 15, pp.32~36 (2004)
- D.Y. Lee, "Synthesis of electrospun BaSrTiO3", PVP nanofibers, 2010, pp.53, 43~49[DOI]
- D.Y. Lee, "Characterization of electrospun aluminumdoped zinc oxide nanofibers", Thin Solid Films, 517, pp.1256~1261 (2008)
- J. Qiu, "Fabrication of piezoelectric ceramic fibers by extrusion of Pb(Zr,Ti)O3 powder and Pb(Zr,Ti)O3 sol mixture", Smart Mater. Struct, 12, pp.331~337 (2003)
- Yena Kim, "Characterization of Electrospun ZnO Nanofibers", Journal of the Korean Physical Society, 53(1), pp.421~425 (2008), 한국물리학회
- 이득용, "Effect of Calcination Temperature and Atmosphere on Crystal Structure of BaTiO3 Nanofibers", Metals and Materials International, 16(3), pp.453~457 (2010), 대한금속·재료학회
- W. Sigmund, "Processing and structure relationships in electrospinning of ceramic fiber systems", J. Am. Ceram. Soc, 89, pp.395~407 (2006)
- R. LOinacero, "Preparation of xTiO2·(1-x)Al2O3 catalytic supports by the sol-gel method:physical and structural characterization", J. Mater. Sci, 35, pp.3279~3287 (2000)
- B.L. Bischoff, "Peptization of process in the sol-gel preparation of porous anatase(TiO2)", Chem. Mater, 7, pp.1772~1778 (1995)
- A. Navrosky, "Enthalpy of the anatase-rutile transformation", J. Am. Ceram. Soc, 50, pp.626~ (1967)
- H.Yin, "Hydrothermal synthesis of nanosized anatase and rutile TiO2 using amorphous phase of TiO2", J. Mater. Chem, 11, pp.1694~1703 (2001)
- G. Busca, "FT Raman and FTIR studies of titanias and metatitanate powders", J. Chem. Soc. Faraday Trans, 90, pp.3181~3190 (1994)
- M. Ocana, "Factors affecting the infrared and Raman spectra of rutile powders", J. Solid State Chem, 75, pp.364~372 (1988)