In Situ Time-Resolved XAFS Studies on Laser-Induced Particle Formation of Platinum Groups Metal Ions in a H $_{2}$ O / EtOH Solution

Saeki, Morihisa*; Matsumura, Daiju ; Yomogida, Takumi ; Taguchi, Tomitsugu*; Tsuji, Takuya ; Saito, Hiroyuki*; Nakanishi, Ryuzo*; Oba, Hironori*

When nanosecond pulsed UV laser is irradiated into a H $_{2}$ O / EtOH solution of platinum group metal (PGM) ions, PGM particles with sub-micron size are formed. We investigated laser induced particle formation of Pd $^{2+}$ in the H $_{2}$ O / EtOH solution by in situ time-resolved XAFS spectroscopy and showed dependence of the reaction rate of laser-induced particle formation on the laser fluence. The dependence on the laser fluence elucidated that the photons contribute not only to the reduction of the Pd $^{2+}$ , but also to the autocatalytic growth of the Pd particles.

Language	:	Japanese
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Meeting title	:	日本化学会第99春季年会(2019)
Held date	:	2019/03
Location (city)	:	神戸
Location (country)	:	日本
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Keywords	:	パラジウム; パルスレーザー; 光還元; X線吸収分光
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : BB20182065
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In Situ Time-Resolved XAFS Studies on Laser-Induced Particle Formation of Platinum Groups Metal Ions in a HO / EtOH Solution

In Situ Time-Resolved XAFS Studies on Laser-Induced Particle Formation of Platinum Groups Metal Ions in a H $_{2}$ O / EtOH Solution