Electrochemical properties of palladium adlayers on Pt(100) substrates

Formic acid oxidation on Pd-modified Pt(100) and Pt(111) electrodes: A DEMS study

“…The methodology employed for the Pd adlayer was similar to that previously reported [25][26][27][28][29]31]. Very briefly, both Pt(100) or Pt(111) clean surfaces were immersed at 0.10 V in a 10 )5 M PdSO 4 dissolved in 0.1 M H 2 SO 4 in meniscus configuration.…”

“…Then, the electrode was transferred to a second cell containing only 0.5 M H 2 SO 4 and free of Pd +2 cations. The value of the palladium coverage was calculated by recording the voltammetric profile in this cell [25,29,31]. The palladium coverage is defined the number of palladium atoms per platinum surface atom.…”

Formic acid electro-oxidation on carbon supported PdxPt1−x (0≥x≥1) nanoparticles synthesized via modified polyol method

“…Alloying of Pd with the second metal changes the surface electronic state, resulting in an ensemble effect, which can possibly reduce the catalyst poisoning and increase the activity and lifespan of the catalyst. A number of studies have been carried out recently with the aim to design multi-component Pd catalysts [22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Approaches include the deposition of sub-monolayers of Pd on various supports, such as V, Mo, W and Au [26], Pt and Au single crystals [27][28][29][30][31].…”

“…A number of studies have been carried out recently with the aim to design multi-component Pd catalysts [22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Approaches include the deposition of sub-monolayers of Pd on various supports, such as V, Mo, W and Au [26], Pt and Au single crystals [27][28][29][30][31]. Both Pd-Pt bulk and nano-catalysts [22][23][24][25][26][27][28][29][30][31][32][33][34][35] show high activity and improved stability in DFAFCs.…”

“…Approaches include the deposition of sub-monolayers of Pd on various supports, such as V, Mo, W and Au [26], Pt and Au single crystals [27][28][29][30][31]. Both Pd-Pt bulk and nano-catalysts [22][23][24][25][26][27][28][29][30][31][32][33][34][35] show high activity and improved stability in DFAFCs. For practical application, the Pd-Pt catalysts have to be prepared as highly dispersed, uniform nanoparticles.…”