کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7712945 | 1497424 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical quartz crystal microbalance study of high-rate Pt dissolution in H2O2-containing H2SO4 solution with Fe2+ ion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Pt dissolution in an H2SO4 solution was investigated in the presence of both H2O2 and Fe2+ using an electrochemical quartz crystal microbalance (EQCM). The EQCM data in the H2O2-containing H2SO4 with and without Fe2+ showed that a remarkable Pt dissolution occurred during the cathodic potential step of 1.36 â 0.36 V vs. RHE from the 4th cycle, which is further enhanced by the presence of Fe2+. The mass gains and mass losses observed up to the 3rd cycle were also more significant in the presence of Fe2+, suggesting that the roughness of the Pt electrode surface remarkably increased. This phenomenon may be caused by the enhanced O2 generation due to the significant decomposition of H2O2. As a result, Pt oxidants inducing the cathodic Pt dissolution significantly form from the rearranged Pt atoms, which contribute to the high-rate Pt dissolution in the presence of both H2O2 and Fe2+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 1, 5 January 2016, Pages 534-542
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 1, 5 January 2016, Pages 534-542
نویسندگان
Hayato Itaya, Sayoko Shironita, Akira Nakazawa, Mitsuhiro Inoue, Minoru Umeda,