Self-assembly of platinum nanochains using octreotide acetate template and their catalytic activity study

摘要

A facile method was reported for preparing self-assembly Pt nanochains (PtNCs) by using octreotide acetate (AOC) as template in aqueous environment at room temperature. The influence of pH values on the reaction system was examined, and other synthesis parameters were optimized in order to prepare AOC-templated Pt nanoparticle arrays with high electrocatalytic activities. AOC was found with diameters in the range of 50 +/- 5 nm at pH 2.0/9.0, while the diameter of AOC was in the range of 20 +/- 5 nm under the condition of pH 4.0. Catalytic activities of the PtNCs prepared with different conditions were investigated, and the results demonstrated that the PtNCs catalyst prepared at pH 4 had higher catalytic activities in relative to those prepared at other conditions. Hence, the PtNCs will be a good anode catalyst candidate for direct methanol fuel cells. (C) 2016 Elsevier B.V. All rights reserved.