The ability to produce a diverse spectrum of hollow nanostructures is central to the advances in many current and emerging areas of technology. Herein, we report a general method to craft hollow nanostructures with highly tunable physical and chemical parameters. The key strategy is to regenerate the nanoscale sacrificial templates in a galvanic replacement reaction through site-selective overgrowth. As examples, we demonstrate the syntheses of nanocages and nanotubes made of silver, gold, palladium, and/or platinum with well-controlled wall thicknesses and elemental distributions. Using the nanocages of silver and gold as models, we demonstrate they possess intriguing plasmonic properties and offer superior performance in biosensing applications. This study provides a powerful platform to customize hollow nanostructures with desired properties and therefore is expected to enable a variety of fundamental studies and technologically important applications.

中文翻译：

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电化学置换中的模板再生：通往高度多样化的空心纳米结构的途径。

产生各种光谱的空心纳米结构的能力对于许多当前和新兴技术领域的进展至关重要。在这里，我们报告了一种通用的方法来制作具有高度可调的物理和化学参数的空心纳米结构。关键策略是通过位点选择性过度生长在电流置换反应中再生纳米级牺牲模板。作为示例，我们演示了由银，金，钯和/或铂制成的纳米笼和纳米管的合成，其壁厚和元素分布得到很好的控制。以银和金的纳米笼为模型，我们证明了它们具有令人着迷的等离子体性能，并在生物传感应用中提供了卓越的性能。