Reactivity of Fe0 Atoms with mixed CCI4 and D2O films over FeO (111)

Journal Article · Thu Oct 14 04:00:00 EDT 2010 · Journal of Physical Chemistry C, 114(40):17136-17141

DOI:https://doi.org/10.1021/jp103896k· OSTI ID:1000603

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

The interaction of Fe0 with chlorinated hydrocarbons in an aqueous environment is important for the utilization of Fe0 nanoparticles in groundwater remediation technologies. This article builds upon prior work that utilized an "atom dropping" technique to show that Fe0 atoms react readily with pure CCl4 and D2O upon contact at 30 K to form the ClFeCCl3 and DFeOD insertion complexes, respectively. Here we deposit Fe atoms into films containing both D2O and CCl4 as separate layers. Temperature programmed desorption (TPD) is used to show that the ClFeCCl3 and DFeOD insertion complexes are unreactive with each other and both molecular D2O and CCl4 up to the desorption temperature of each species on an FeO(111) substrate. These results suggest that the Fe insertion complexes are energetically favorable and are thus relatively stable with respect to subsequent reactions.

• 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: 1000603
• Report Number(s): PNNL-SA-72451; 24808; 40023; KC0301020; KC0303020
• Journal Information: Journal of Physical Chemistry C, 114(40):17136-17141, Journal Name: Journal of Physical Chemistry C, 114(40):17136-17141 Journal Issue: 40 Vol. 114; ISSN 1932-7447
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ATOMS
DESORPTION
Environmental Molecular Sciences Laboratory
ORGANIC CHLORINE COMPOUNDS