Reactivity of Fe-0 Atoms, Clusters, and Nanoparticles with CC14 Multilayers on FeO(111)

Journal Article · Thu Feb 05 04:00:00 EST 2009 · Journal of Physical Chemistry C, 113(5):1818-1829

DOI:https://doi.org/10.1021/jp8076062· OSTI ID:950160

Parkinson, Gareth S; Dohnalek, Zdenek; Smith, R Scott; Kay, Bruce D

The interaction of Fe0 atoms and clusters with CCl4 multilayers was investigated using a novel "atom dropping" method at 30 K over a FeO(111) thin film. Temperature programmed desorption experiments over a range of Fe0 and CCl4 coverages demonstrate a rich surface chemistry with several reaction products (C2Cl4, C2Cl6, OCCl2, CO, FeCl2, FeCl3) observed. X-ray photoelectron spectroscopy data show that the initial reactive interaction occurs spontaneously at 30 K, with the experimentally observed reaction products formed at higher temperature, in agreement with the results of theoretical calculations. The formation of OCCl2 and CO is concluded to occur through abstraction of O atoms from the generally inert FeO(111) substrate. The buffer layer assisted growth technique is used to show that the reactivity, and interestingly the reaction products, is determined by the size of Fe0 nanoparticles which interact with CCl4.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 950160
• Report Number(s): PNNL-SA-61984; 24808; KC0302010
• Journal Information: Journal of Physical Chemistry C, 113(5):1818-1829, Journal Name: Journal of Physical Chemistry C, 113(5):1818-1829 Journal Issue: 5 Vol. 113; ISSN 1932-7447
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
ATOMS
CARBON TETRACHLORIDE
CHEMICAL REACTION KINETICS
Environmental Molecular Sciences Laboratory
INTERACTIONS
IRON OXIDES
MOLECULAR CLUSTERS
NANOSTRUCTURES
SURFACE PROPERTIES