title: A new spectroelectrochemical cell for in situ measurement of Pt and Au K-edge X-ray absorption fine structure.
abstract: A new spectroelectrochemical cell to investigate the structure of Pt/Au nanoclusters using Pt and Au K-edge X-ray absorption fine structure (XAFS) measurements under the electrochemical conditions is developed. K-edge XAFS measurements for Pt and Au require a sample as thick as 1-2 cm, which prevents homogeneous potential distribution. We can measure in situ Pt and Au K-edge XAFS spectra and determine reasonable electrochemical surface areas using our developed spectroelectrochemical cell. This work provides a new approach to analyze Pt/Au core-shell nanoclusters. The new cell is designed to be applied to both spectra with high absorption-edge energies such as the K-edge of Pt and Au and those with low absorption-edge energy such as Pt L-edge.
authors.affiliation: Nissan Motor Co., Ltd., Natsushima-cho, Yokosuka-shi, Kanagawa 237-8523, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kaito
authors.affiliation: Nissan Motor Co., Ltd., Natsushima-cho, Yokosuka-shi, Kanagawa 237-8523, Japan.
authors.forename: Hisashi
authors.initials: H
authors.lastname: Mitsumoto
authors.affiliation: Nissan Motor Co., Ltd., Natsushima-cho, Yokosuka-shi, Kanagawa 237-8523, Japan.
authors.forename: Seiho
authors.initials: S
authors.lastname: Sugawara
authors.affiliation: Nissan Motor Co., Ltd., Natsushima-cho, Yokosuka-shi, Kanagawa 237-8523, Japan.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Shinohara
authors.affiliation: Catalysis Research Center, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan.
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Uehara
authors.affiliation: Catalysis Research Center, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan.
authors.forename: Hiroko
authors.initials: H
authors.lastname: Ariga
authors.affiliation: Catalysis Research Center, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Takakusagi
authors.affiliation: Catalysis Research Center, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan.
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Asakura