Three-dimensional porous rhodium-copper alloy nanoflowers stereoassembled on Ti3C2Tx MXene as highly-efficient methanol oxidation electrocatalysts

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2024-10-29 DOI:10.1039/d4qi02182g

Haiyan He, Yue Lan, Jinlong Qin, Quanguo Jiang, Lu Yang, Jian Zhang, Huajie Huang

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引用次数: 0

Abstract

The development of direct methanol fuel cell technology is expected to ease the excessive consumption of non-renewable fossil fuels, which puts forward the new request to the exploration of advanced Pt-alternative electrocatalysts toward the methanol oxidation reaction. Here, we demonstrate a facile and robust bottom-up method to the spatial construction of three-dimensional (3D) porous rhodium-copper alloy nanoflowers stereoassembled on Ti3C2Tx MXene nanosheets (RhCu NF/Ti3C2Tx) through an in situ soft-chemistry process. With the synergistic contributions from the distinctive structural merits, such as the 3D nanoflower-shaped configuration, abundant porosity, bimetallic alloy and strain effects, and excellent metallic conductivity, the resultant RhCu NF/Ti3C2Tx nanoarchitectures manifest significantly boosted electrocatalytic MOR performance in the alkaline condition, which is more competitive than that of conventional particle-shaped Rh catalysts dispersed on Ti3C2Tx nanosheets, graphene, carbon nanotubes, carbon black as well as commercial Pt/carbon black and Pd/carbon black catalysts.

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立体组装在 Ti3C2Tx MXene 上的三维多孔铑铜合金纳米流作为高效甲醇氧化电催化剂

直接甲醇燃料电池技术的发展有望缓解不可再生化石燃料的过度消耗，这对探索甲醇氧化反应的先进铂替代电催化剂提出了新的要求。在此，我们展示了一种简便、稳健的自下而上的方法，通过原位软化学过程在 Ti3C2Tx MXene 纳米片（RhCu NF/Ti3C2Tx）上立体组装三维（3D）多孔铑铜合金纳米花。RhCu NF/Ti3C2Tx 纳米结构具有独特的结构优点，如三维纳米花形构型、丰富的孔隙率、双金属合金和应变效应以及优异的金属导电性、与分散在 Ti3C2Tx 纳米片、石墨烯、碳纳米管、碳黑以及商用铂/碳黑和钯/碳黑催化剂上的传统颗粒状 Rh 催化剂相比，其性能更具竞争力。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.