摘要
Material interfaces permit electron transfer that modulates the electronic structure and surface properties of catalysts,leading to radically enhanced rates for many important reactions.Unlike conventional thoughts,the nanoscale interfacial interactions have been recently envisioned to be able to afect the reactivity of catalysts far from the interface.However,demonstration of such unlocalized alterations in existing interfacial materials is rare,impeding the development of new catalysts.We report the observation of unprecedented long-range activation of polydymite Ni_(3)S_(4) nanorods through the interfacial interaction created by PdS_(x) nanodots(dot-on-rod structure)for high-performance water catalytic electroreduction.Experimental results show that this local interaction can activate Ni3S4 rods with length even up to 25 nanometers due to the tailored surface electronic structure.We anticipate that the long-range efect described here may be also applicable to other interfacial material systems,which will aid the development of newly advanced catalysts for modern energy devices.
基金
We acknowledge the funding support from the National Natural Science Foundation of China(Grants 21521001,21431006,21225315,21321002,91645202,51702312,and 51802301)
the Users with Excellence and Scientifc Research Grant of Hefei Science Center of CAS(2015HSCUE007)
the Key Research Program of Frontier Sciences,CAS(Grant QYZDJ-SSWSLH036)
the Chinese Academy of Sciences(Grants KGZDEW-T05,XDA090301001)
the Fundamental Research Funds for the Central Universities(WK2060190045,WK2340000076)
the Recruitment Program of Global Youth Experts.We would like to thank the beamline 1W1B station in the Beijing Synchrotron Radiation Facility and BL14W1 at the Shanghai Synchrotron Radiation Facility for help with the characterizations.Tis work was partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication.
