کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10275973 | 463411 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ observation of the initial adsorption process of heptylviologen cation radicals by slab optical waveguide spectroscopy synchronized with electrode potential modulation methods
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
In situ observation of absorption spectra of the heptylviologen cation radical (HV+·) was performed by slab optical waveguide (SOWG) spectroscopy utilizing indium-tin-oxide (ITO) electrodes. On application of potential sweep and potential step techniques from â300 to â600 mV (vs. Ag|AgCl), we observed the initial adsorption of HV+· on the ITO electrode. Two specific absorption bands were found at around 380 and 400 nm, which indicated that HV+· existed as both monomer and dimer on ITO with a monolayer or a few deposition layers. The change in the intensity and the peak position of the absorption spectra from adsorption species of HV+· was correlated with the electrode potential. These two absorption bands became incorporated in one broad band after a 30 s interval at â600 mV.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 578, Issue 1, 15 April 2005, Pages 137-142
Journal: Journal of Electroanalytical Chemistry - Volume 578, Issue 1, 15 April 2005, Pages 137-142
نویسندگان
Yusuke Ayato, Akiko Takatsu, Kenji Kato, Jose H. Santos, Takamitsu Yoshida, Naoki Matsuda,