Flagella-Templated Process to Noble Metal Nanoparticles/TiO2 Composite Films and Their Photocatalytic Activity
Abstract: In this work, flagella are used to control over the growth and assembly of Au and Ag nanoparticles, and a stable dispersion of flagella/metal nanoparticle is successfully obtained. A composite film with a TiO2/Au(Ag)/TiO2 sandwich structure is prepared by means of a dip-coating method where a dialyzed TiO2 solution and flagella stabilized Au and Ag nanoparticles are used as raw materials. TEM and UV-visible spectroscopy characterizations reveal that the sandwich structures play a role in stabilizing metal nanoparticles in the composite films and visible light photocatalytic activity is attributed to the existence of Au and Ag nanoparticles.
文章引用: 王莉霞 , 翁永根 , 何涛 , 徐金光 (2013) 鞭毛模板制备贵金属纳米颗粒/TiO2复合薄膜及光催化活性研究。 材料科学， 3， 121-124. doi: 10.12677/MS.2013.33023
 D. Zhang, T. Yoshida, T. Oekermann, et al. Room-temperature synthesis of porous nanoparticulate TiO2 films for flexible dye-sensitized solar cells. Advanced Functional Materials, 2006, 16: 1228-1234.
 P. Innocenzi, L. Malfatti and G. J. A. A. Soler-Illia. Hierarchical mesoporous films: From self-assembly to porosity with different length scales. Chemistry of Materials, 2011, 23: 2501-2509.
 S. S. Soni, M. J. Henderson, J.-F. Bardeau, et al. Visible-light photocatalysis in titania-based mesoporous thin films. Advanced Materials, 2008, 20: 1493-1498.
 W. Hou, S. B. Cronin. A review of surface plasmon resonance-enhanced photocatalysis. Advanced Functional Materials, 2012, 23(13): 1612-1619.
 L. D. Rogatis, M. Cargnello, V. Gombac, et al. Embedded phases: A way to active and stable catalysts. Chem SusChem, 2010, 3(1): 24-42.
 M. T. Kumara, B. C. Tripp and S. Muralidharan. Self-assembly of metal nanoparticles and nanotubes on bioengineered flagella scaffolds. Chemistry of Materials, 2007, 19(8): 2056-2064.
 沈萍. 微生物学[M]. 北京: 高等教育出版社, 2000: 59-60.