Topics in Current Chemistry (2019) 377:11
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with the compressive strain is observed in both methanol and ethanol oxidation
reactions (MOR and EOR). During the methanol oxidation (Fig. 18a), the Pt ML /
Au(111) exhibited a negatively shifted potential at the onset of the reaction, and over
sevenfold enhancement in peak current density with respect to Pt(111) (the most
active low-index plane of Pt). Similarly, during the ethanol oxidation (Fig. 18b), the
stretched Pt ML supported on Au(111) demonstrates slightly negatively shifted reaction-onset potential and over fourfold increase in peak current density. Along with
more electrochemical studies, a trend is observable indicating that increased lattice
compression lowers reactivity.
In situ infrared reflection absorption spectroscopy (IRRAS) study was carried
out to identify the reaction intermediates and products during methanol and ethanol
oxidation on Pt ML /Au(111), as well as to gain insights into the substrate-induced
change in the selectivity of Pt ML and the mechanism of the greatly enhanced reaction kinetics.
Fig. 17 Pt ML deposition by galvanic displacement of a Cu UPD adlayer on the substrates of bulk
Pd electrode (a) and Pd nanoparticle (b). Models of pseudomorphic monolayers of Pt on three different substrates (c) inducing compressive strain (Ru(0001) and Pd(111)) and expansive strain (Au(111)).
Reprinted from Ref. [99] with permission from Springer
Reprinted from the journal
30
1 3
with the compressive strain is observed in both methanol and ethanol oxidation
reactions (MOR and EOR). During the methanol oxidation (Fig. 18a), the Pt ML /
Au(111) exhibited a negatively shifted potential at the onset of the reaction, and over
sevenfold enhancement in peak current density with respect to Pt(111) (the most
active low-index plane of Pt). Similarly, during the ethanol oxidation (Fig. 18b), the
stretched Pt ML supported on Au(111) demonstrates slightly negatively shifted reaction-onset potential and over fourfold increase in peak current density. Along with
more electrochemical studies, a trend is observable indicating that increased lattice
compression lowers reactivity.
In situ infrared reflection absorption spectroscopy (IRRAS) study was carried
out to identify the reaction intermediates and products during methanol and ethanol
oxidation on Pt ML /Au(111), as well as to gain insights into the substrate-induced
change in the selectivity of Pt ML and the mechanism of the greatly enhanced reaction kinetics.
Fig. 17 Pt ML deposition by galvanic displacement of a Cu UPD adlayer on the substrates of bulk
Pd electrode (a) and Pd nanoparticle (b). Models of pseudomorphic monolayers of Pt on three different substrates (c) inducing compressive strain (Ru(0001) and Pd(111)) and expansive strain (Au(111)).
Reprinted from Ref. [99] with permission from Springer
Reprinted from the journal
30