Epoxy-sealed single Pt nanoelectrodes Fabrication and electrocatalytic performance for the methanol oxidation reaction

龚艳

农业农村部南京农业机械化研究所

摘要：Epoxy-sealed single Pt nanoelectrodes (SPNEs) ranging in size from 3 to 300 nm have been fabricated by a laserassisted pulling method and characterized by optical microscopy, transmission electron microscopy (TEM) and electrochemical methods. The prepared SPNEs were used to investigate the methanol oxidation reaction (MOR),and the results show that the electrocatalytic activity of the SPNEs towards MOR depends on the radius of the electrode. In the range of electrode radii tested (3 nm–280 nm), the electrocatalytic activity decreases if the radius of the SPNE is either too small or too large, with optimal electrocatalytic efficiency being observed when the radius is about 4.2 nm.

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