Study of platinum electrodes by means of electrochemistry and low-energy electron diffraction

Spontaneous and Electrodeposition of Pt on Ru(0001)

“…The charge associated with H-chemisorption on a flat Ru(0001) surface is 120 µC/cm 2 [24], while that on a flat Pt(111) surface amounts to 240 µC/cm 2 . The latter value corresponds to an adatom density of about 1.5 × 10 15 cm 2 , being equivalent to 1 H atom per unit mesh [21][22][23]. The number for the Pt-modified Ru surface is even larger, presumably because of enhanced surface roughness.…”

Molecular Orientation of Hydroquinone Adsorbed at a Platinum(111) Thin-Layer Electrode

“…where Q 1 and Q 2 are the charges required to reduce benzoquinone (BQ) to HQ by potential-step chronocoulometry after the first and second fillings, respectively, Q is the corresponding coulometric charge after the electrode surface has been saturated with hydroquinone, Q 1b , Q 2b , and Q b are the corresponding background charges measured in the absence of dissolved HQ, n is 2 for HQ, F is the Faraday constant, and A is the real area (3.08 cm 2 ) of the electrode surface determined by iodine or hydrogen adsorption (20,21). In the measurement of charges Q 1 , Q 2 , and Q, the electrode cavity was rinsed with pure supporting electrolyte between fillings with HQ solution to avoid a dilution effect from the residual amount of solution remaining inside the thin-layer cavity after the purging with Ar.…”

The role of defects in the specific adsorption of anions on Pt(111)

“…back to UHV) could be achieved [1][2][3][4]. Although some of these studies employed surface structure analysis by LEED [2][3][4] Since only flame annealed beads had produced this voltammetry, there existed the possibility that unique surface structures were produced during the rapid coding and/or quenching, and that these caused the new electrochemistry [9].…”

“…Although some of these studies employed surface structure analysis by LEED [2][3][4] Since only flame annealed beads had produced this voltammetry, there existed the possibility that unique surface structures were produced during the rapid coding and/or quenching, and that these caused the new electrochemistry [9]. However, within a short time several groups using UHV system and LEED analysis with improved sample transfer technology [e.g.…”