Single-atom tailoring of platinum nanocatalysts for high-performance multifunctional electrocatalysis

纳米材料基催化剂 催化作用 电催化剂 铂金 材料科学 电化学 纳米技术 纳米线 过渡金属 化学工程 甲醇 纳米颗粒 化学 有机化学 物理化学 电极 工程类
作者
Mufan Li,Kaining Duanmu,Chengzhang Wan,Tao Cheng,Liang Zhang,Sheng Dai,Wenxing Chen,Zipeng Zhao,Peng Li,Huilong Fei,Yuanming Zhu,Rong Yu,Jun Luo,Ketao Zang,Zhaoyang Lin,Mengning Ding,Jin Huang,Hongtao Sun,Jinghua Guo,Xiaoqing Pan
出处
期刊:Nature Catalysis [Nature Portfolio]
卷期号:2 (6): 495-503 被引量:573
标识
DOI:10.1038/s41929-019-0279-6
摘要

Platinum-based nanocatalysts play a crucial role in various electrocatalytic systems that are important for renewable, clean energy conversion, storage and utilization. However, the scarcity and high cost of Pt seriously limit the practical application of these catalysts. Decorating Pt catalysts with other transition metals offers an effective pathway to tailor their catalytic properties, but often at the sacrifice of the electrochemical active surface area (ECSA). Here we report a single-atom tailoring strategy to boost the activity of Pt nanocatalysts with minimal loss in surface active sites. By starting with PtNi alloy nanowires and using a partial electrochemical dealloying approach, we create single-nickel-atom-modified Pt nanowires with an optimum combination of specific activity and ECSA for the hydrogen evolution, methanol oxidation and ethanol oxidation reactions. The single-atom tailoring approach offers an effective strategy to optimize the activity of surface Pt atoms and enhance the mass activity for diverse reactions, opening a general pathway to the design of highly efficient and durable precious metal-based catalysts. Platinum plays a crucial role in various electrocatalytic systems, but its scarcity and cost limit its practical application. Now, a single-atom tailoring strategy applied to platinum nanowires maximizes their specific and mass activities for the hydrogen evolution and methanol and ethanol oxidation reactions.
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