TY - JOUR
T1 - Dealloying of nitrogen-introduced pt-co alloy nanoparticles
T2 - Preferential core-shell formation with enhanced activity for oxygen reduction reaction
AU - Takahashi, Shuntaro
AU - Takahashi, Naoki
AU - Todoroki, Naoto
AU - Wadayama, Toshimasa
N1 - Funding Information:
This study was supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan and by a Grant-in-Aid for Challenging Exploratory Research from the Japan Society for the Promotion of Science (T.W.).
PY - 2016/12/31
Y1 - 2016/12/31
N2 - Voltammetric dealloying is a typical method to synthesize Pt-shell/less-noble metal (M) alloy core nanoparticles (NPs) toward the oxygen reduction reaction (ORR). The pristine nanostructures of the Pt-M alloy NPs should determine the ORR activity of the dealloyed NPs. In this study, we investigated the voltammetric dealloying behavior of the Pt-Co and nitrogenintroduced Pt-Co alloy NPs generated by synchronous arc-plasma deposition of Pt and Co. The results showed that the dealloying behavior is sensitive to cobalt nitride in the pristine NPs, leading to the preferential generation of a Pt-rich shell/Pt-Co alloy core architecture having enhanced ORR activity.
AB - Voltammetric dealloying is a typical method to synthesize Pt-shell/less-noble metal (M) alloy core nanoparticles (NPs) toward the oxygen reduction reaction (ORR). The pristine nanostructures of the Pt-M alloy NPs should determine the ORR activity of the dealloyed NPs. In this study, we investigated the voltammetric dealloying behavior of the Pt-Co and nitrogenintroduced Pt-Co alloy NPs generated by synchronous arc-plasma deposition of Pt and Co. The results showed that the dealloying behavior is sensitive to cobalt nitride in the pristine NPs, leading to the preferential generation of a Pt-rich shell/Pt-Co alloy core architecture having enhanced ORR activity.
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U2 - 10.1021/acsomega.6b00412
DO - 10.1021/acsomega.6b00412
M3 - Article
AN - SCOPUS:85019347095
VL - 1
SP - 1247
EP - 1252
JO - ACS Omega
JF - ACS Omega
SN - 2470-1343
IS - 6
ER -