A new spectroelectrochemical cell for in situ measurement of Pt and Au K-edge X-ray absorption fine structure

作者：Kaito Takahiro^*; Mitsumoto Hisashi; Sugawara Seiho; Shinohara Kazuhiko; Uehara Hiromitsu; Ariga Hiroko; Takakusagi Satoru; Asakura Kiyotaka

来源：Review of Scientific Instruments, 2014, 85(8): 084104.

DOI：10.1063/1.4892531

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.

• 出版日期2014-8