Atomically Dispersed Copper-Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction
Atomically Dispersed Copper-Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction
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钯纳米环合金化的原子分散铜铂双位点催化析氢反应
DOI：
10.1002/anie.201709803
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发表时间：
2017-12-11
影响因子：
16.6
通讯作者：
Li, Yadong
中科院分区：
文献类型：
--
作者：
Chao, Tingting;Luo, Xuan;Li, Yadong
需要在原子尺度上设计高活性催化剂来驱动析氢反应（HER）。使用超薄 PdNR 上原子分散的 Cu 作为晶种，将铜-铂 (Cu-Pt) 双位点与含有 1.5atom% Pt 的钯纳米环 (PdNR) 合金化。原子分散的 Cu-Pt 双位点的超细结构通过 X 射线吸收精细结构 (XAFS) 测量得到证实。 Pd/Cu-PtNRs在酸性溶液中表现出优异的HER性能，在10mAcm(-2)电流密度下的过电势仅为22.8mV，在-0.05V电势下具有3002Ag((Pd+Pt))(-1)的高质量电流密度。
Designing highly active catalysts at an atomic scale is required to drive the hydrogen evolution reaction (HER). Copper-platinum (Cu-Pt) dual sites were alloyed with palladium nanorings (PdNRs) containing 1.5atom% Pt, using atomically dispersed Cu on ultrathin PdNRs as seeds. The ultrafine structure of atomically dispersed Cu-Pt dual sites was confirmed with X-ray absorption fine structure (XAFS) measurements. The Pd/Cu-PtNRs exhibit excellent HER properties in acidic solution with an overpotential of only 22.8mV at a current density of 10mAcm(-2) and a high mass current density of 3002Ag((Pd+Pt))(-1) at a -0.05V potential.