Fabrication of 2-dimensional platinum nanocatalyst arrays by electron beam lithography: ethylene hydrogenation and CO-poisoning reaction studies

Autor:	J. Grunes, X.-M. Yan, Gabor A. Somorjai, A. Liddle, A. M. Contreras
Rok vydání:	2006
Předmět:	Materials science Inorganic chemistry technology industry and agriculture Oxide chemistry.chemical_element General Chemistry Platinum nanoparticles Catalysis chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Thin film Platinum Electron-beam lithography Carbon monoxide
Zdroj:	Topics in Catalysis. 39:123-129
ISSN:	1572-9028 1022-5528
DOI:	10.1007/s11244-006-0047-0
Popis:	Electron beam lithography (EBL) has been used to fabricate platinum nanoparticle arrays in the 20-nm size range on oxide thin films of silica and alumina deposited onto silicon wafers. A combination of characterization techniques (SEM, AFM, XPS, AES) has been used to determine size, spatial arrangement and cleanliness of these fabricated catalysts. Ethylene hydrogenation reaction studies have been carried out over these platinum nanoarrays and have revealed major differences in turnover rates and activation energies of the different nanostructures when clean and when poisoned with carbon monoxide. The oxide–metal interfaces are implicated as important reaction sites that remain active when the metal sites are poisoned by adsorbed carbon monoxide.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31cbb74ffa90b0c1c22dc90b703a5b8e https://doi.org/10.1007/s11244-006-0047-0 Zobrazit plný text záznamu Plný text ve formátu PDF