Mesoporous silicananostructures have been synthesized and loaded with Pd and Pt catalytic noble metals. It is found that Pd forms small nanoclusters (3–5 nm) on the surface of the mesoporous structure whereas Pt impregnation results in the inclusion of Pt nanostructures within the silica hexagonal pores (from nanoclusters to nanowires). It is observed that these materials have high catalyticproperties for CO–CH4CO–CH4CO–CH4 combustion, even in a thick film form. In particular, results indicate that the Pt and Pd dispersed in mesoporous silica are catalytically active as a selective filter for gas sensors.
Published in Applied Physics Letters, Volume 81, Issue 18, 2002, pages 3449-3451.
©Applied Physics Letters 2002, AIP (American Institute of Physics).
Arbiol, J., Cabot, A., Morante, J. R., Chen, F., & Liu, M. (28 October 2002). Distributions of Nobel Metal Pd and Pt in Mesoporous Silica. Applied Physics Letters, 81 (18), 3449-3451. http://dx.doi.org/10.1063/1.1518158