Abstract Novel ultrafine nanoporous Pt (NP-Pt) ribbons were fabricated by dealloying melt-spun Al85Pt15 and Al85Pt8Ce7 alloys. The addtion of Ce to Al-Pt alloy changed the phase constituents and distribution of the alloy. During alkali-dealloying, CeOx nanorods formed and were distributed in NP-Pt. Sacrificial nanorods were then selectively removed during acid-dealloying, resulting in the formation of hierarchical NP-Pt ribbons with a ligament scale of approximately 3 nm. The specific surface area of the NP-Pt was 3 times greater than that of the Al85Pt15 alloy without Ce. NP-Pt with a high active surface area had remarkable electro-catalytic performance and stability towards methanol oxidation.

中文翻译：

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甲醇电氧化两步脱合金纳米多孔铂带的形成与控制

摘要 通过对熔纺 Al85Pt15 和 Al85Pt8Ce7 合金进行脱合金制备了新型超细纳米多孔 Pt (NP-Pt) 带。在Al-Pt合金中添加Ce改变了合金的相成分和分布。在碱脱合金过程中，CeOx 纳米棒形成并分布在 NP-Pt 中。然后在酸脱合金过程中选择性去除牺牲纳米棒，导致形成具有约 3 nm 韧带尺度的分层 NP-Pt 带。NP-Pt 的比表面积是不含 Ce 的 Al85Pt15 合金的 3 倍。具有高活性表面积的 NP-Pt 具有显着的电催化性能和对甲醇氧化的稳定性。