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- W2011597923 abstract "In the present work, polytyramine (PTy) and cobalt oxide (Co 3 O 4 ) were used as substrates for platinum electrodeposition, in order to obtain electrode systems with electrocatalytic properties. PTy and Co 3 O 4 were previously electrochemically deposited on graphite and boron-doped diamond (BDD) supports, respectively. Anodic oxidation of methanol was used as a test-reaction for assessing possible functional effects of the substrate on the electrochemical behavior of the Pt particles. It was found that, when deposited on PTy or cobalt oxide, the electrocatalyst exhibits higher activity and is less susceptible to fouling, via strong adsorption of reaction intermediates. X-ray photoelectron spectroscopy (XPS) measurements suggested that these features can be ascribed to the presence of –OH functional groups at the surface of the Pt particles. It was also found that electrodeposition of platinum on BDD resulted only in metallic Pt and Pt(OH) 2 , whereas when graphite was used as substrate the presence of platinum oxides was also evident. During prolonged anodic oxidation of methanol, a higher stability of the –OH groups from the platinum surface was observed for graphite-supported Pt particles, compared to the case when bare BDD was used as support." @default.
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- W2011597923 date "2012-08-10" @default.
- W2011597923 modified "2023-10-18" @default.
- W2011597923 title "Functional Effects of the Deposition Substrate on the Electrochemical Behavior of Platinum Particles" @default.
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- W2011597923 doi "https://doi.org/10.1143/jjap.51.090119" @default.
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