纳米材料基催化剂
X射线光电子能谱
铂金
密度泛函理论
电催化剂
铂纳米粒子
电子结构
材料科学
拉曼光谱
纳米颗粒
拉曼散射
费米能级
物理化学
电化学
化学物理
纳米技术
化学
催化作用
计算化学
化学工程
电极
电子
物理
生物化学
光学
量子力学
工程类
作者
Ling Yang,Roland Grzeschik,Ping Jiang,Linfeng Yu,Cejun Hu,Aoxuan Du,Sebastian Schlücker,Wei Xie
标识
DOI:10.1002/anie.202301065
摘要
Abstract Platinum is the best electrocatalyst for the hydrogen evolution reaction (HER). Here, we demonstrate that by contact electrification of Pt nanoparticle satellites on a gold or silver core, the Fermi level of Pt can be tuned. The electronic properties of Pt in such hybrid nanocatalysts were experimentally characterized by X‐ray photoelectron spectroscopy (XPS) and surface‐enhanced Raman scattering (SERS) with the probe molecule 2,6‐dimethyl phenyl isocyanide (2,6‐DMPI). Our experimental findings are corroborated by a hybridization model and density functional theory (DFT) calculations. Finally, we demonstrate that tuning of the Fermi level of Pt results in reduced or increased overpotentials in water splitting.
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