Synthetic Principles of Spiky Au Nanoparticles,ACS Applied Materials & Interfaces

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Synthetic Principles of Spiky Au Nanoparticles
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-12-13 , DOI: 10.1021/acsami.3c15615
Mengmeng Zhang ₁ , Mengjiao Hao ₁ , Xueling Tang ₁ , Yongchan Fan ₁ , Haibing Xia ₁

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In this work, the synthetic principles of spiky Au nanoparticles (spiky Au NPs) with an average number of spikes of less than or equal to six and controlled core sizes by using Au nanorods as seeds (Au-NR seeds) are summarized on the basis of the results of a series of control experiments. In addition, one empirical equation that can roughly estimate the number of spiky Au NPs is proposed, demonstrated by the results of the products prepared from different aspect ratios of Au-NRs as seeds and non-Au-NR seeds. Moreover, the synthetic principles of spiky Au NPs are further demonstrated by taking the successful synthesis of a serials of spiky Au^21×7 NPs. Furthermore, the as-prepared spiky Au@Au_11.8Pd_88.2 NPs with ultrathin AuPd shells, which are derived from spiky Au^21×7 NPs with the smallest cores, can bear excellent catalytic activity (say, E_1/2 = 0.947 V) and durability toward the oxygen reduction reaction (ORR) in alkaline conditions, compared with commercial Pt/C catalysts (E_1/2 = 0.883 V).

中文翻译：

尖峰金纳米粒子的合成原理

本工作在此基础上总结了以金纳米棒为种子（Au-NR种子）的平均尖峰数小于或等于6、控制核心尺寸的尖峰金纳米颗粒（Au-NR种子）的合成原理。一系列对照实验的结果。此外，还提出了一个可以粗略估计尖峰Au NPs数量的经验方程，并通过不同纵横比的Au-NRs作为种子和非Au-NR种子制备的产品的结果证明了这一方程。此外，通过成功合成一系列尖峰Au ^21×7 NPs，进一步论证了尖峰Au NPs的合成原理。此外，由具有最小核的尖刺Au ^21×7 NPs衍生而来的具有超薄AuPd壳的尖刺Au@Au _11.8 Pd _88.2 NPs可以具有优异的催化活性（例如， E _1/2 = 0.947 V）与商业 Pt/C 催化剂相比（ E _1/2 = 0.883 V），在碱性条件下对氧还原反应（ORR）的耐久性。

更新日期：2023-12-13

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