Thermally Controlled Crystallization of Electrospun TiO2 Nanofibers
作者： Hyoung Jun Park , Wolfgang M. Sigmund
DOI: 10.4028/WWW.SCIENTIFIC.NET/AST.71.80
关键词: Nanofiber 、 Materials science 、 Anatase 、 Composite material 、 Crystallization 、 Chemical engineering 、 Photocatalysis 、 Phase (matter) 、 Rutile 、 Electrospinning 、 Microstructure
摘要: The anatase phase of TiO2 has been great interest due to its photocatalytic activity. For enhanced activity, the polymorphic structure and rutile was pursued form semiconductor-semiconductor junction, which could even further enhance nanofibers with large specific surface area were fabricated via electrospinning from ethanol-based sol while development controlled by heat treatment. fibers characterized x-ray diffraction (XRD) transmission electron microscopy (TEM) for crystalline microstructure, respectively. Among different treatment temperatures tested, 700°C found have smallest grains having both semiconductor, i.e. available. calcined at 800°C also achieved phases, however showed significant grain growth.
sci-hub.se 参考文章(15)
P. Falaras, A. P. Xagas, Roughness and fractality of nanostructured TiO2 films prepared via sol-gel technique Journal of Materials Science. ,vol. 37, pp. 3855- 3860 ,(2002) , 10.1023/A:1019686902277
Shang-Di Mo, W. Y. Ching, Electronic and optical properties of three phases of titanium dioxide: Rutile, anatase, and brookite Physical Review B. ,vol. 51, pp. 13023- 13032 ,(1995) , 10.1103/PHYSREVB.51.13023
N. Kopidakis, E. A. Schiff, N.-G. Park, J. van de Lagemaat, A. J. Frank, Ambipolar Diffusion of Photocarriers in Electrolyte-Filled, Nanoporous TiO2† Journal of Physical Chemistry B. ,vol. 104, pp. 3930- 3936 ,(2000) , 10.1021/JP9936603
Nursen Avci, Philippe F. Smet, Hilde Poelman, Nigel Van de Velde, Klaartje De Buysser, Isabel Van Driessche, Dirk Poelman, Characterization of TiO2 powders and thin films prepared by non-aqueous sol–gel techniques Journal of Sol-Gel Science and Technology. ,vol. 52, pp. 424- 431 ,(2009) , 10.1007/S10971-009-2028-9
A. Kumar, R. Jose, K. Fujihara, J. Wang, S. Ramakrishna, Structural and Optical Properties of Electrospun TiO2 Nanofibers Chemistry of Materials. ,vol. 19, pp. 6536- 6542 ,(2007) , 10.1021/CM702601T
Joseph Muscat, Varghese Swamy, Nicholas M. Harrison, First-principles calculations of the phase stability ofTiO2 Physical Review B. ,vol. 65, pp. 224112- ,(2002) , 10.1103/PHYSREVB.65.224112
Deanna C. Hurum, Kimberly A. Gray, Tijana Rajh, Marion C. Thurnauer, Recombination pathways in the Degussa P25 formulation of TiO2: surface versus lattice mechanisms. Journal of Physical Chemistry B. ,vol. 109, pp. 977- 980 ,(2005) , 10.1021/JP045395D
Sudha Madhugiri, Bo Sun, Panagiotis G Smirniotis, John P Ferraris, Kenneth J Balkus, Electrospun mesoporous titanium dioxide fibers Microporous and Mesoporous Materials. ,vol. 69, pp. 77- 83 ,(2004) , 10.1016/J.MICROMESO.2003.12.023
Dan Li, Younan Xia, Fabrication of Titania Nanofibers by Electrospinning Nano Letters. ,vol. 3, pp. 555- 560 ,(2003) , 10.1021/NL034039O
Wiwat Nuansing, Siayasunee Ninmuang, Wirat Jarernboon, Santi Maensiri, Supapan Seraphin, Structural characterization and morphology of electrospun TiO2 nanofibers Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 131, pp. 147- 155 ,(2006) , 10.1016/J.MSEB.2006.04.030