| Determination of ascorbic acid in copper- ammonia buffer solution with GCE modified with rGO-Fe2O3 synthesis by Ferrate (VI) |
| کد مقاله : 1063-17THECSI |
| نویسندگان |
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سیده فاطمه بنی فاطمه * دانشکده شیمی، دانشگاه پیام نور، یزد، ایران |
| چکیده مقاله |
| Chemically modified electrodes have been widely used as sensitive and selective analytical devices for environmental and clinical analyses [1]. Graphene or redused graphene oxide (rGO) and its nanocomposites were found to be an ideal two-dimensional catalyst because of its unique two-dimensional geometric structure, large surface area, and high mobility of charge carriers [2]. In this research, glassy carbon electrode (GLE) modified with rGO-Fe2O3 was used to determination of ascorbic acid (AA) in the presence of ammonia copper. A simple and fast method was applied for the synthesis of rGO-Fe2O3 composite based on the reaction of ferrate (Fe (VI)) with graphene in alkaline medium, which was introduced in our previous work [3]. This electrode showed a stronger voltammetric response for the measurement of AA in ammonia copper medium. Fig. 1 shows the effect of copper on GCE without modifier and with GO and rGO-Fe2O3 modifier. As it is known, electron transfer is faster on the modified electrode surface. |
| کلیدواژه ها |
| Keywords : Modified Electrode, Graphene Nanocomposite, Ferrate, Ascorbic Acid |
| وضعیت: چکیده برای ارائه شفاهی پذیرفته شده است |