Yin Shuli, Wang Ziqiang, Li Chunjie, Yu Hongjie, Deng Kai, 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 Adv. 2020 Feb 10;2(3):1084-1089. doi: 10.1039/d0na00020e. eCollection 2020 Mar 17.
Rational design of Pt-based nanostructures with a controllable morphology and composition is vital for electrocatalysis. Herein, we demonstrate a dual-template strategy to fabricate well-defined cage-bell nanostructures including a Pt core and a mesoporous PtM (M = Co, Ni) bimetallic shell (Pt@mPtM (M = Co, Ni) CBs). Owing to their unique nanostructure and bimetallic properties, Pt@mPtM (M = Co, Ni) CBs show higher catalytic activity, better durability and stronger CO tolerance for the methanol oxidation reaction than commercial Pt/C. This work provides a general method for convenient preparation of cage-bell nanostructures with a mesoporous bimetallic shell, which have high promising potential for application in electrocatalytic fields.
合理设计具有可控形态和组成的铂基纳米结构对于电催化至关重要。在此，我们展示了一种双模板策略来制备结构明确的笼铃状纳米结构，包括一个铂核和一个介孔铂M（M = 钴、镍）双金属壳层（Pt@mPtM（M = 钴、镍）CBs）。由于其独特的纳米结构和双金属性质，Pt@mPtM（M = 钴、镍）CBs在甲醇氧化反应中比商业Pt/C表现出更高的催化活性、更好的耐久性和更强的CO耐受性。这项工作为方便制备具有介孔双金属壳层的笼铃状纳米结构提供了一种通用方法，这些纳米结构在电催化领域具有很高的应用潜力。
