Metastable Nanoporous Palladium Evolving from Palladium Nanocrystals
Metastable Nanoporous Palladium Evolving from Palladium Nanocrystals
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DOI：
10.1002/cnma.202100299
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发表时间：
2021-08
期刊：
影响因子：
3.8
通讯作者：
Satoshi Teraji;Sadaki Samitsu;Qui Tran‐Cong‐Miyata;T. Norisuye;H. Nakanishi
中科院分区：
文献类型：
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作者：
Satoshi Teraji;Sadaki Samitsu;Qui Tran‐Cong‐Miyata;T. Norisuye;H. Nakanishi
纳米多孔金属可用于许多技术应用中，并且其制备一直受到关注。在这项研究中，我们描述了一种不同类型的制备方法，其中纳米多孔钯（Pd）的制备从钯纳米晶体通过消除稳定剂。所得纳米多孔Pd具有双峰孔结构，具有广泛的表面积，并且其表面是电化学可及的，并且对乙醇电氧化表现出比商业Pd黑催化剂更高的催化活性。一个有趣的特点是，原子表面结构可以通过制备温度和溶剂敏感地改变，从而提高纳米多孔Pd的催化活性。该方法简单易行，易于大规模生产，有望成为制备电化学活性纳米多孔钯的新方法。
Nanoporous metals can be used in many technological applications, and continuous interest has been focused on their preparation. In this study, we describe a different type of preparation method, in which nanoporous palladium (Pd) is prepared from Pd nanocrystals by the elimination of stabilizers. The resulting nanoporous Pd has a bimodal pore structure with an extensive surface area, and its surfaces are electrochemically accessible and exhibit higher catalytic activity toward ethanol electrooxidation than that of the commercial Pd black catalyst. An interesting feature is that the atomic surface structure can be sensitively altered by the preparation temperature and solvent, thereby increasing the catalytic activity of nanoporous Pd. The proposed method is simple and available for mass production and is expected to be a new alternative for producing electrochemically active nanoporous Pd.