Yin Shuli, Wang Ziqiang, Liu Songliang, Jiao Shiqian, Tian Wenjing, Xu You, Li Xiaonian, Wang Liang, Wang Hongjing
State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China.
Nanoscale. 2021 Feb 11;13(5):3208-3213. doi: 10.1039/d0nr08758k.
The design of bimetallic core-shell nanostructures with mesoporous surfaces is considered significant to strengthen the catalytic activity and stability for direct methanol fuel cells. Here, we report a flexible method to synthesize Au@Pd core-shell mesoporous nanoflowers (Au@mPd NFs) with Au core coated with mesoporous Pd nano-petals, in which polymeric micelle-assembled structures are used as templates to induce the formation of mesopores. Benefiting from the electronic and structural effects, Au@mPd NFs show excellent electrocatalytic activity and stability for methanol oxidation reaction in alkaline electrolytes. This study demonstrates a versatile strategy for the fabrication of core-shell mesoporous nanoflowers with adjustable composition.
具有介孔表面的双金属核壳纳米结构的设计对于增强直接甲醇燃料电池的催化活性和稳定性具有重要意义。在此，我们报告了一种灵活的方法来合成Au@Pd核壳介孔纳米花（Au@mPd NFs），其Au核被介孔Pd纳米花瓣包覆，其中聚合物胶束组装结构用作模板以诱导介孔的形成。受益于电子和结构效应，Au@mPd NFs在碱性电解质中对甲醇氧化反应表现出优异的电催化活性和稳定性。本研究展示了一种用于制备组成可调的核壳介孔纳米花的通用策略。
