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公开(公告)号：US20240328013A1
公开(公告)日：2024-10-03
申请号：US18617664
申请日：2024-03-27
IPC分类号： C25B11/089 , C25B9/23
CPC分类号： C25B11/089 , C25B9/23
摘要： A method for synthesizing high-entropy alloy (HEA) nanostructures, each having a HEA shell uniformly grown on a nanocore, is provided. The method comprises: mixing nanostructure seeds, a plurality of metal precursors, one or more reducing agents and a surfactant in a solvent to form a first mixture; subjecting the first mixture to ultrasonication under an ultrasonication temperature; degassing the first mixture upon heating at a degassing temperature under vacuum with magnetic stirring; purging the first mixture with an inert gas; and keeping the first mixture at a growth temperature for a growth time to form the HEA nanostructures. The provided method is a low-temperature, facile, general, wet-chemical, seeded epitaxial growth method which can synthesize a library of unconventional-phase HEA nanostructures, e.g., 4H-Au@HEA nanowires and 2H/fcc-Au@HEA nanosheets with 5-10 components by using 4H-Au NWs and 2H/fcc-Au NSs as seeds respectively.
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公开(公告)号：US20240150911A1
公开(公告)日：2024-05-09
申请号：US17983418
申请日：2022-11-09
发明人： Hua ZHANG , Xichen ZHOU , An ZHANG
IPC分类号： C25B11/046 , C25B1/23
CPC分类号： C25B11/046 , C25B1/23
摘要： The present invention provides a gold-copper alloy nanostructure which can be used as a catalyst for electrochemical CO2 reduction reaction and a method for synthesizing the same. The provided gold-copper alloy nanostructure has a heterophase composed of a hexagonal close-packed phase and a face-centered cubic phase. This gold-copper nanostructure shows an atomic ratio of 99 to 1 for gold to copper. The present invention adopts delicately structural modulation of nanomaterials based on the phase engineering of nanomaterials strategy and offers a promising way for the design and preparation of novel catalysts, especially those with unconventional phase, for enhancing their performances in various catalytic applications.
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