Titania nanofibers were successfully synthesized by sol-gel coating of electrospun polymer nanofibers followed by calcining to form either the pure anatase or rutile phases. Characterization of these materials was carried out using scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy techniques. The average diameter of these ceramic nanofibers was observed to be around 200 nm for both the rutile and anatase forms. The valence band structure and optical absorption thresholds differ, however, indicating that nanofibrous mats of titania can be selectively developed for different applications in catalysis and photochemistry.
References
1.
HuJ.Q., MaX.L., ShangN.G., Large scale rapid oxidation synthesis of SnO2 nanoribbons, J. Phys. Chem. B106 (2002) 3823–3826.
2.
XiaY., YangP., SunY., One dimensional nanostructures: synthesis, characterization, and applications, Adv. Mater.15 (2003) 353–389.
3.
LuoS., FanJ., LiuW., Synthesis and low-temperature photoluminescence properties of SnO2 nanowires and nanobelts, Nanotechnology17 (2006) 1695–1699.
4.
ChaudhariG.N., BamboleD.R., BodadeA.B., Characterization of nanosized TiO2 based H2S gas sensor, J. Mater. Sci.41 (2006) 4860–4864.
5.
ChenC.L., WengH.S., Nanosized CeO2-supported metal oxide catalysis for catalytic reduction of SO2 with CO as a reducing agent, Applied Catalysis B: Environmental55 (2005) 115–122.
6.
ParkS.J., BhargavaS., BenderE.T., Palladium nanoparticles supported by alumina nanofibers synthesized by electrospinning, J. Mater. Res.23 (2008) 1193–1196.
7.
DemirM.M., GulgunM.A., MencelogluY.Z., Palladium nanoparticles by electrospinning from Poly(acrylonitrile-co-acrylic acid)-PdCl2 solutions: Relations between preparation conditions, particle size, and catalytic activity, Macromolecules37 (2004) 1787–1792.
8.
MatsuiT., HaradaM., IchihashiY., Effect of noble metal particle size on the sulfur tolerance of monometallic Pd and Pt catalysts supported on high-silica USY zeolite, Appl. Catal. A286 (2005) 249–257.
9.
SekulicJ., TenE.J.E., BlankD.H.A., Synthesis and characterization of microporous titania membranes, J. Sol-Gel Sci. Tech.31 (2004) 201–204.
10.
KumarK.N.P., KeizerK., BurggraafA.J., Synthesis and textural properties of unsupported and supported rutile (TiO2) membranes, J. Mater. Chem.3 (1993) 923–929.
FranciscoM.S.P., MastelaroV.R., FlorentinoA.O., Structural study of copper oxide supported on a ceria-modified titania catalyst system, Topics in Catalysis18 (2002) 105–111.
13.
SohnJ.R., JangH.J., Correlation between the infrared band frequency of the silanol bending vibration in TiO2-SiO2 catalysts and activity for acid catalysis, J. Catal.132 (1991) 563–565.
14.
ZhengL., XuM., XuT., TiO2-x thin films as oxygen sensor, Sensors Actuators B66 (2000) 28–30.
15.
SunY., EgawaT., ZhangL., High anatase-rutile transformation temperature of anatase titania nanoparticles: Prepared by metalorganic chemical vapor deposition, Jpn. J. Appl. Phys.41 (2002) L945–L947.
16.
XiaB., HuangH., XieY., Heat treatment on TiO2 nanoparticles prepared by vapor-phase hydrolysis, Mater. Sci. Eng. B57 (1999) 150–154.
17.
ZhongY., ChanC.K., PorterJ.F., Micro-Raman spectroscopic characterization of nanosized TiO2 powders prepared by vapor hydrolysis, J. Mater. Res.13 (1998) 2602–2609.
18.
DingZ., HuX., LuG.Q., Novel silica gel supported TiO2 photocatalyst synthesized by CVD method, Langmuir16 (2000) 6216–6222.
19.
MurugavelP., KalaisevamM., RajuA.R., Sub-micrometre spherical particles of TiO2, ZrO2 and PZT by nebulized spray pyrolysis of metalorganic precursors, J. Mater. Chem.7 (1997) 1433–1438.
20.
TomerV., Teye-MensahR., TokashJ.C., Selective emitters for thermophotovoltaics: erbia-modified electrospun titania nanofibers, Sol. Energy Mater. Sol. Cells85 (2005) 477–488.
21.
PradhanS.K., ReucroftP.J., YangF., Growth of TiO2 nanorods by metalorganic chemical vapor deposition, J. Cryst. Growth256 (2003) 83–88.
22.
YangJ., MeiS., FerreiraJ.M.F., Hydrothermal synthesis of nanosized titania powders: Influence of tetraalkyl ammonium hydroxides on particle characteristics, J. Am. Ceram. Soc.84 (2001) 1696–1702.
23.
LiD., XiaY., Electrospinning of nanofibers: Reinventing the wheel?, Adv. Mater.16 (2004) 1151–1170.
24.
RenekerD.H., YarinA.L., FongH., Bending instability of electrically charged liquid jets of polymer solutions in electrospinning, J. Appl. Phys.87 (2000) 4531–4547.
25.
BenderE.T., KattaP., LotusA., Identification of CO2 sequestered in electrospun metal oxide nanofibers, Chem. Phys. Lett.423 (2006) 302–305.
26.
DhageS.R., GaikwadS.P., RaviV., Synthesis of nanocrystalline TiO2 by tartarate gel method, Bull. Mater. Sci.27 (2004) 487–489.
27.
GopelM., ChanW.J.M., JongheL.C.D., Room temperature synthesis of crystalline metal oxides, J. Mater. Sci.32 (1997) 6001–6008.
28.
ElsenerB., AtzeiD., KrolikowskiA., From chemical to structural order of electrodeposited Ni22P alloy: An XPS and EDXD study, Chem. Mater.16 (2004) 4216–4225.
29.
Martínez-CastañónG.A., Sánchez-LoredoM.G., DorantesH.J., Characterization of silver sulfide nanoparticles synthesized by a simple precipitation method, Mater. Lett.59 (2005) 529–534.
30.
NavrotskyA., KleppaO.J., Enthalpy of the anatase-rutile transformation, J. Am. Ceramic, Soc.50 (1967) 626–626.
