In situ real-time monitoring of Pt-VO2 nanoparticle-nanowire assembly by GISAXS

Cafer T. Yavuz; Sungsik Lee; Byeongdu Lee; Myung H. Kim; Jeong M. Baik; Sönke Seifert; Stefan Vajda; Christopher Larson; Randall E. Winans; Martin Moskovits; Alec M. Wodtke; Galen D. Stucky

doi:10.1117/12.851255

5 May 2010 In situ real-time monitoring of Pt-VO₂ nanoparticle-nanowire assembly by GISAXS

Cafer T. Yavuz, Sungsik Lee, Byeongdu Lee, Myung H. Kim, Jeong M. Baik, Sönke Seifert, Stefan Vajda, Christopher Larson, Randall E. Winans, Martin Moskovits, Alec M. Wodtke, Galen D. Stucky

Author Affiliations +

Proceedings Volume 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II; 76792D (2010) https://doi.org/10.1117/12.851255
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Methanol is a hydrogen carrier for fuel cells and its chemical transformations are of great current interest. Methanol oxidation by vanadium oxides is well studied, hence, serves as a good measure for catalytic activity. Arrays of VO₂ nanowires grown on r-cut sapphire prove to be unique for the in situ catalytic activity tests. Here, we present size and morphology dependent activity of Platinum coated single crystalline VO₂ nanowires in methanol oxidation reactions using Grazing Incidence Small Angle X-ray Scattering (GISAXS). Our findings show an unexpected sintering behavior of Pt at temperatures as low as 200 °C.

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Cafer T. Yavuz, Sungsik Lee, Byeongdu Lee, Myung H. Kim, Jeong M. Baik, Sönke Seifert, Stefan Vajda, Christopher Larson, Randall E. Winans, Martin Moskovits, Alec M. Wodtke, and Galen D. Stucky "In situ real-time monitoring of Pt-VO₂ nanoparticle-nanowire assembly by GISAXS", Proc. SPIE 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II, 76792D (5 May 2010); https://doi.org/10.1117/12.851255

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