Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D2 on Cu(211) | Zendy

Gernot Füchsel | Zendy; Kun Nan Cao | Zendy; Süleyman Er | Zendy; Egidius W. F. Smeets | Zendy; Aart W. Kleyn | Zendy; Ludo B. F. Juurlink | Zendy; Geert–Jan Kroes | Zendy

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Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D₂ on Cu(211)

Author(s) -

Gernot Füchsel,

Kun Nan Cao,

Süleyman Er,

Egidius W. F. Smeets,

Aart W. Kleyn,

Ludo B. F. Juurlink,

Geert–Jan Kroes

Publication year - 2017

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/acs.jpclett.7b03097

Subject(s) - dissociation (chemistry) , cleavage (geology) , molecule , copper , adsorption , hydrogen , bond cleavage , crystallography , chemistry , hydrogen molecule , chemical physics , metal , catalysis , materials science , organic chemistry , fracture (geology) , composite material

Stepped metal surfaces are usually assumed to exhibit an increased catalytic activity for bond cleavage of small molecules over their flat single-crystal counterparts. We present experimental and theoretical data on the dissociative adsorption of molecular hydrogen on copper that contradicts this notion. We observe hydrogen molecules to be more reactive on the flat Cu(111) than on the stepped Cu(211) surface. We suggest that this exceptional behavior is due to a geometric effect, that is, that bond cleavage on the flat surface does not occur preferentially over a top site.

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