Magnetically recyclable Fe@Pt core-shell nanoparticles and their use as electrocatalysts for ammonia borane oxidation: the role of crystallinity of the core.
Magnetically recyclable Fe@Pt core-shell nanoparticles and their use as electrocatalysts for ammonia borane oxidation: the role of crystallinity of the core.
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DOI：
10.1021/ja808830a
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发表时间：
2009-02
影响因子：
15
通讯作者：
Xin-bo Zhang;Jun-min Yan;Song Han;H. Shioyama;Qiang Xu
中科院分区：
文献类型：
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作者：
Xin-bo Zhang;Jun-min Yan;Song Han;H. Shioyama;Qiang Xu
采用连续还原法制备了以不同晶型Fe为核的碳载Fe@Pt核壳纳米粒子催化剂。出乎意料的是，与其结晶对应物相比，处于非晶态的铁发挥作为Fe@Pt NP的核的独特且强大的能力。所得NP对于氨硼烷氧化的活性（高达354%）远高于商业Pt/C催化剂。此外，这些NP联合收割机低成本、长期稳定性和易于回收的功能。
Carbon-supported Fe@Pt core-shell nanoparticle (NP) catalysts with Fe cores in different crystal states have been successfully synthesized by a sequential reduction process. Unexpectedly, in contrast to its crystallized counterpart, iron in the amorphous state exerts a distinct and powerful ability as the core for the Fe@Pt NPs. The resultant NPs are far more active for ammonia borane oxidation (by up to 354%) than the commercial Pt/C catalysts. Furthermore, these NPs combine low cost, long-term stability, and easy recovery functions.