In-situ scanning tunneling microscopy of bromine adlayers on Pt(111)

Tanaka, Satoru; Yau, Shueh Lin; Itaya, Kingo

doi:10.1016/0022-0728(95)04062-s

Cited by 81 publications

(55 citation statements)

References 16 publications

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“…Itaya et al verified that flame-annealed Pt(111) has atomically flat surface using in-situ scanning tunneling microscopy (STM). 3,4 Electrochemistry using single crystal electrodes (surface electrochemistry) has been widely studied since then.…”

Section: Introductionmentioning

confidence: 99%

“…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%

“…27 These results indicate that surface structure of Pt(110) is very sensitive to annealing and cooling condition of laboratories. Real surface structures of the high index planes of Pt were also determined using SXD in 0.1 M HClO 4 . [28][29][30] Surfaces composed of two atomic rows of terrace such as Pt(110) and Pt(311) are reconstructed to (1 © 2) structure, whereas surfaces with more than three atomic rows of terraces have unreconstructed (1 © 1) structure.…”

Section: Introductionmentioning

confidence: 99%

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

Hoshi

Nakamura

2018

Electrochemistry

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Hoshi

Nakamura

2018

Electrochemistry

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“…Real surface structures of Pt single crystal electrodes were studied using scanning tunneling microscopy (STM) [12][13][14][15][16] and surface Xray scattering (SXS) in electrochemical environments. Atomically flat Pt(100) and Pt(111) electrodes have unreconstructed (1 © 1) structures.…”

Section: Introductionmentioning

confidence: 99%

“…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%

Surface X-ray Scattering of Pd(110) and Pd(311) in Electrochemical Environments

et al. 2014

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Scanning Tunneling Microscopy, In Situ, Electrochemical

Itaya

2000

Encyclopedia of Analytical Chemistry

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This article describes the in situ scanning tunneling microscopy (STM) operated at electrode–electrolyte interfaces. It is demonstrated that in situ STM makes it possible to monitor with atomic resolution a wide variety of electrode processes such as the adsorption of inorganic and organic species and the dissolution and deposition of metals and semiconductors. Owing to limitations on space, the focus is on selected topics and mainly on our own experimental results.

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In-situ scanning tunneling microscopy of bromine adlayers on Pt(111)

Cited by 81 publications

References 16 publications

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

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

Surface X-ray Scattering of Pd(110) and Pd(311) in Electrochemical Environments

Scanning Tunneling Microscopy, In Situ, Electrochemical

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