Mechanochemical Synthesis of Free-Standing Platinum Nanosheets and Their Electrocatalytic Properties
Mechanochemical Synthesis of Free-Standing Platinum Nanosheets and Their Electrocatalytic Properties
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DOI：
10.1002/adma.201501056
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发表时间：
2015-08-12
影响因子：
29.4
通讯作者：
Gautam, Ujjal K.
中科院分区：
文献类型：
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作者：
Chhetri, Manjeet;Rana, Moumita;Gautam, Ujjal K.
通过施加1.8N量级的流体诱导剪切力和0.5kpa的差动剪应力，通过Pt4+电偶置换Te模板纳米棒的直径，获得了坚固的26 nm厚的自立式铂纳米片，这是一种极其罕见的金属纳米结构形态。与传统的铂催化剂相比，波纹状催化剂具有更大的比表面积和更好的电催化性能。
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 Pt4+. Corrugation leads to their large surface area and much improved electrocatalytic properties when compared with conventional Pt catalysts.