کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10275722 | 463387 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
FTIR studies of tyrosine oxidation at polycrystalline Pt and Pt(1Â 1Â 1) electrodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: FTIR studies of tyrosine oxidation at polycrystalline Pt and Pt(1Â 1Â 1) electrodes FTIR studies of tyrosine oxidation at polycrystalline Pt and Pt(1Â 1Â 1) electrodes](/preview/png/10275722.png)
چکیده انگلیسی
The electrochemical oxidation of tyrosine has been studied on polycrystalline and (1Â 1Â 1) single crystal platinum electrodes in 0.1Â M HClO4. No surface sensitivity of bulk tyrosine reactions has been detected for these two electrodes, although the adsorption process seems to be structure-sensitive. The onset for tyrosine electrooxidation is observed at ca. 0.7Â V for both surfaces. In situ FTIR technique was used to discern the nature of the products formed during the oxidation processes. The early stages of tyrosine oxidation occur via a decarboxylation to carbon dioxide. Two complex parallel reactions were found at EÂ >Â 1.10Â V vs. RHE: one of them leading to a ?-lactone of hydroxy-substituted benzofurane, and the second with the formation of p-benzoquinone. The assignment of these products is based on the corresponding transmission spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 585, Issue 2, 15 November 2005, Pages 230-239
Journal: Journal of Electroanalytical Chemistry - Volume 585, Issue 2, 15 November 2005, Pages 230-239
نویسندگان
Carlos F. Zinola, José L. RodrÃguez, M. Carmen Arévalo, Elena Pastor,