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In situ fluorescence yield soft X-ray absorption spectroscopy of electrochemical nickel deposition processes with and without ethylene glycol

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Title: In situ fluorescence yield soft X-ray absorption spectroscopy of electrochemical nickel deposition processes with and without ethylene glycol
Authors: Yamaguchi, Akinobu Browse this author →KAKEN DB
Akamatsu, Naoya Browse this author
Saegusa, Shunya Browse this author
Nakamura, Ryo Browse this author
Utsumi, Yuichi Browse this author →KAKEN DB
Kato, Masaru Browse this author →KAKEN DB
Yagi, Ichizo Browse this author →KAKEN DB
Ishihara, Tomoko Browse this author
Oura, Masaki Browse this author →KAKEN DB
Issue Date: 5-Apr-2022
Publisher: Royal Society of Chemistry
Journal Title: RSC Advances
Volume: 12
Issue: 17
Start Page: 10425
End Page: 10430
Publisher DOI: 10.1039/D2RA01050J
Abstract: The electrochemical Ni deposition at a platinum electrode was investigated in a plating nickel bath in the presence and absence of ethylene glycol (EG) using fluorescence yield soft X-ray absorption spectroscopy (FY-XAS) in the Ni L2,3-edge and O K-edge regions under potential control. At ≤+0.35 V vs. the reversible hydrogen electrode (RHE), the electrochemical Ni deposition was detected by the Ni L2,3-edge FY-XAS in the presence of EG whereas almost no such event was observed in the absence of EG. A drastic decrease of FY-XAS intensities in the O K-edge region was also observed in the presence of EG at >+0.35 V vs. RHE, suggesting that the nano-/micro-structured Ni deposition initiated by the removal of water molecules occurs on the Pt electrode. The complex formation of Ni2+ with EG and the adsorption of EG on the Ni surface could play an important role in the Ni deposition. This study demonstrates that the in situ FY-XAS is a powerful and surface-sensitive technique to understand (electro)chemical reactions including polyol synthesis and electrocatalysis at solid–liquid interfaces.
Type: article
URI: http://hdl.handle.net/2115/84708
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 加藤 優

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