Potential dependent surface structure of the Pt(1 1 1) electrolyte interface

Tidswell, I. M.; Marković, Nenad M.; Ross, P.N.

doi:10.1016/0022-0728(94)03553-9

Cited by 89 publications

(58 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…after annealing in hydrogen-oxygen flame they were cooled in air (oxidant atmosphere) or in Ar + H 2 stream (reductant atmosphere). It is known that cooling in Ar + H 2 stream will produce a well-defined Pt single crystal surface with less defects [29,30], therefore more hollow sites in long-range order are expected on this surface. As a consequence, it will favor the irreversible adsorption of Sn.…”

Section: Resultsmentioning

confidence: 98%

Irreversible adsorption of Sn adatoms on basal planes of Pt single crystal and its impact on electrooxidation of ethanol

Zheng¹,

Chunjie²,

Zhang³

et al. 2008

Electrochimica Acta

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 98%

Irreversible adsorption of Sn adatoms on basal planes of Pt single crystal and its impact on electrooxidation of ethanol

Zheng¹,

Chunjie²,

Zhang³

et al. 2008

Electrochimica Acta

View full text Add to dashboard Cite

“…Real atomic arrangements of single crystal electrodes were studied in electrochemical environments using STM and surface X-ray diffraction (SXD). Pt(111) 4,[19][20][21] and Pt(100) [22][23][24] have unreconstructed (1 © 1) structures in adsorbed hydrogen and double layer regions. Above 1.05 V(RHE), however, irreversible place exchange of oxygen species and Pt atoms is observed on Pt(111).…”

Section: Introductionmentioning

confidence: 99%

Elucidation of Activity Enhancement Factors for the Oxygen Reduction Reaction on Platinum and Palladium Single Crystal Electrodes

Hoshi

Nakamura

2018

Electrochemistry

View full text Add to dashboard Cite

This headline article focuses on the oxygen reduction reaction (ORR), cathodic reaction of fuel cells, on well-defined high index planes of Pt and Pd for the elucidation of factors enhancing the activity for the ORR. The surfaces with (111) terrace edge have high activity for the ORR on Pt electrodes. Pt(331) = 3(111)- (111) gives the highest activity for the ORR in the stepped surfaces of Pt. Incorporation of one kink atom among eleven step atoms further enhances the activity of Pt(331). On single crystal electrodes of Pd, however, terrace edge deactivates the ORR and wide (100) terrace enhances the activity. Effects of Pt oxides (PtOH and PtO) on the ORR have been examined using vibrational spectroscopy. Infrared reflection absorption spectroscopy (IRAS) shows that PtOH prevents the ORR on Pt electrodes. Nanoparticle surface enhanced Raman spectroscopy (NPSERS) indicates that PtO also blocks the ORR on Pt(100) of which ORR activity is the lowest. The ORR activity of Pt is also enhanced by the modification of the surfaces by amines with long alkyl chains such as octylamine (OA) and amine with pyrene ring (PA). Modification by OA/PA increases the ORR activity on n(111)-(111) surfaces of Pt with terrace atomic rows more than 7. The activity of flat Pt(111) is enhanced most remarkably by OA/PA. However, the ORR of Pt(100), of which surface is also composed of flat terrace, is deactivated significantly.

show abstract

“…Atomically flat Pt(100) and Pt(111) electrodes have unreconstructed (1 © 1) structures. [13][14][15]17,18 Pt(110) is composed 2 atomic rows of (111) terrace and monoatomic (111) step in bulk terminated structure, and notated as 2(111)-(111). Pt(110) has (1 © 1) or (1 © 2) structures depending on the annealing and cooling conditions.…”

Section: Introductionmentioning

confidence: 99%

“…[19][20][21] The interlayer spacing between the first and the second layer d 12 is expanded in the adsorbed hydrogen region on all the low index planes of Pt, however the values of d 12 are identical with those in the bulk single crystal electrodes in the double layer region. [17][18][19] The study was extended to the high index planes of Pt. SXS study shows that Pt(311) = 2(100)-(111) has reconstructed (1 © 2) structure in both the adsorbed hydrogen and the double layer regions.…”

Section: Introductionmentioning

confidence: 99%