کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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196722 | 459850 | 2005 | 6 صفحه PDF | دانلود رایگان |
In this paper, oxidation of d-glucose on RuCl2(azpy)2 (azpy = 2-phenylazopyridine), as electrochemical mediator is studied. The complexes RuCl2(azpy)2 were prepared according to literature procedures with some modifications. Two isomers (E–Z or γ-RuCl2(azpy)2 and E–E or δ-RuCl2(azpy)2) were isolated. Each isomer and the crude were investigated electrochemically by immobilizing them with a Nafion/water solution on carbon Toray (CT) as supporting electrode. The voltammetric investigations were in fact used to determine the optimized oxidation potentials, which were helpful to carry out long-term electrolyses of glucose in carbonate buffer. High value products such as 2-ketogluconic and gluconic acids were obtained. The comparison of the results between the crude complex and the two isomers showed that γ-RuCl2(azpy)2 was the most active catalyst.
Journal: Electrochimica Acta - Volume 50, Issues 16–17, 30 May 2005, Pages 3341–3346