AuCo particles were electrodeposited on a graphene( GN) coated glassy carbon electrode( GCE)at -1. 0 V( vs. SCE) from 1 mmol / L HAuCl4+ 20 mmol / L Co( NO3)2+ 0. 2 mol / L Na2SO4+ 0. 04 mmol /L sodium dodecyl sulfonate solution. The obtained AuCo particles showed spherical shape with thorns and they were well distributed on the GN surface. The AuCo alloy particles presented catalysis to the electrochemical oxidation of sulfite that could produce a sensitive anodic peak at the resulting AuCo / GN / GCE elec...
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