Mechanochemical Synthesis of Free-Standing Platinum Nanosheets and Their Electrocatalytic Properties.

Chhetri, Manjeet; Rana, Moumita; Loukya, B; Patil, Pramod K; Datta, Ranjan; Gautam, Ujjal K · Adv Mater · 2015

basic_science · Level V

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Abstract

Robust, 26 nm thick free-standing platinum nanosheets, an extremely rare morphology for metal nanostructures, are obtained by employing fluid induced shearing force of the order of 1.8 N and differential shear-stress of 0.5 kPa across the diameter of a Te template nanorod undergoing galvanic displacement by Pt<sup>4+</sup> . Corrugation leads to their large surface area and much improved electrocatalytic properties when compared with conventional Pt catalysts.