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Issue 79, 2016, Issue in Progress
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Gold nanosheets synthesized with red marine alga Actinotrichia fragilis as efficient electrocatalysts toward formic acid oxidation

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Abstract

In this study, a simple and green synthesis of gold nanosheets was explained when red marine alga extract (Actinotrichia fragilis) collected from the Persian Gulf was used as both a reducing and shape controlling agent. Various nanosheet shapes such as a triangle, truncated triangle, hexagon and polygon were synthesized via this seaweed extract. The size, morphology and crystal nature of the as-prepared nanostructures were characterized by field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and FT-IR spectroscopy. AFM analysis showed that the Au nanosheets have a thickness ranging from 10–15 nm. The as-prepared Au nanosheets were used as an electrocatalyst for the fabrication of an electrochemical sensor for oxidation of formic acid. The Au nanosheets modified carbon ionic liquid electrode (AuNS/CILE) was designed and its catalytic activity was investigated toward formic acid oxidation. The results imply that the AuNS/CILE shows excellent electrocatalytic activity and good stability for formic acid oxidation in a direct pathway without CO poisoning. These results, a direct pathway formic acid oxidation reaction without CO poisonous intermediates together with a simple and green route for the synthesis of Au nanosheets, show that the AuNS/CILE is one of the most promising systems for application in direct full cells.

Graphical abstract: Gold nanosheets synthesized with red marine alga Actinotrichia fragilis as efficient electrocatalysts toward formic acid oxidation

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Publication details

The article was received on 06 Jun 2016, accepted on 02 Aug 2016 and first published on 03 Aug 2016


Article type: Paper
DOI: 10.1039/C6RA14691K
RSC Adv., 2016,6, 75152-75161

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    Gold nanosheets synthesized with red marine alga Actinotrichia fragilis as efficient electrocatalysts toward formic acid oxidation

    S. Momeni, A. Safavi, R. Ahmadi and I. Nabipour, RSC Adv., 2016, 6, 75152
    DOI: 10.1039/C6RA14691K

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