Layer-by-Layer Motif Architectures: Programmed Electrochemical Syntheses of Multilayer Mesoporous Metallic Films with Uniformly Sized Pores
Layer-by-Layer Motif Architectures: Programmed Electrochemical Syntheses of Multilayer Mesoporous Metallic Films with Uniformly Sized Pores
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DOI：
10.1002/anie.201703609
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发表时间：
2017-06-26
影响因子：
16.6
通讯作者：
Yamauchi, Yusuke
中科院分区：
文献类型：
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作者：
Jiang, Bo;Li, Cuiling;Yamauchi, Yusuke
虽然多层膜已被广泛报道，但大多数组合物限于非催化活性材料（例如聚合物、蛋白质、脂质或核酸）。在这里，我们报告的无粘合剂的多层金属介孔膜的制备具有足够的访问高的电催化活性，通过使用程序化的电化学策略。通过精确调节沉积电位和持续时间，可以在含有聚合物胶束作为软模板的单一电解质中合成由交替的介孔Pd层和介孔PdPt层组成的多层介孔结构，并控制层厚度。这种新型结构结合了介孔合金、多层结构和介孔结构的优点，对甲醇氧化反应（莫尔）和乙醇氧化反应（EOR）都表现出很高的电催化活性。
Although multilayer films have been extensively reported, most compositions have been limited to non-catalytically active materials (e.g. polymers, proteins, lipids, or nucleic acids). Herein, we report the preparation of binder-free multilayer metallic mesoporous films with sufficient accessibility for high electrocatalytic activity by using a programmed electrochemical strategy. By precisely tuning the deposition potential and duration, multilayer mesoporous architectures consisting of alternating mesoporous Pd layers and mesoporous PdPt layers with controlled layer thicknesses can be synthesized within a single electrolyte, containing polymeric micelles as soft templates. This novel architecture, combining the advantages of bimetallic alloys, multilayer architectures, and mesoporous structures, exhibits high electrocatalytic activity for both the methanol oxidation reaction (MOR) and the ethanol oxidation reaction (EOR).