New model catalysts: uniform platinum cluster arrays produced by electron beam lithography

Autor:	Gabor A. Somorjai, P. W. Jacobs, Fabio H. Ribeiro, S.J. Wind
Rok vydání:	1996
Předmět:	Neon Transition metal Scanning electron microscope Chemistry Thermal desorption spectroscopy Analytical chemistry chemistry.chemical_element Wafer General Chemistry Platinum Catalysis Electron-beam lithography
Zdroj:	Catalysis Letters. 37:131-136
ISSN:	1572-879X 1011-372X
DOI:	10.1007/bf00807743
Popis:	Platinum particles of 50 nm diameter and 15 run height at 200 nm spacing have been prepared on an oxidized silicon wafer using electron beam lithography. These particles were cleaned of surface carbon with low energy (400 eV) neon ion sputtering. The rate of ethylene hydrogenation over this new model catalyst was measured in a UHV chamber equipped with a high pressure cell for catalytic reaction. Measured turnover numbers are on good agreement with previous work. Atomic force microscopy (AFM) and temperature programmed desorption (TPD) indicate the sample structure remains unaltered by the cleaning and the catalytic reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e52b37abca13b21d6be5b98a9ee3c7e9 https://doi.org/10.1007/bf00807743 Zobrazit plný text záznamu Full text from SpringerLink