State Key Laboratory of Automotive Simulation and Control, School of Materials Science and Engineering, Key Laboratory of Automobile Materials of MOE and Jilin University, Changchun, 130012, People's Republic of China.
Nanoscale. 2018 Dec 7;10(45):21161-21167. doi: 10.1039/c8nr06835f. Epub 2018 Nov 8.
Engineering the interfacial structure of bimetallic nanocrystals is an effective method to improve their electrocatalytic performances. Here, we design a facile strategy for controlling the surface morphology evolution of Au@Pd core-shell nanorods by adjusting the solution supersaturation. The Pd shell of the as-prepared Au@Pd bimetallic nanorods can be modulated from a (111) facet-exposed island to a (100) facet-exposed conformal shell. The conformal shell structure exhibited enhanced catalytic performance toward the ethanol oxidation reaction, while the core-island structure possessed better catalytic stability. This work provides a facile method for interfacial engineering of bimetallic nanocrystals with desired morphology and properties.
通过调控双金属纳米晶的界面结构可以有效改善其电催化性能。在此，我们设计了一种通过控制过饱和度来调控金@钯核壳纳米棒表面形态演化的简易策略。通过该策略可以将所制备的金@钯双金属纳米棒的钯壳层从（111）面暴露的岛状结构调制为（100）面暴露的共形壳层。共形壳层结构表现出对乙醇氧化反应更高的催化性能，而核岛结构则具有更好的催化稳定性。该工作为具有所需形貌和性能的双金属纳米晶的界面工程提供了一种简易方法。
