基于铜-铂分段纳米电池的自主纳米马达。

Autonomous nanomotor based on copper-platinum segmented nanobattery.

机构信息

Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.

出版信息

J Am Chem Soc. 2011 Dec 21;133(50):20064-7. doi: 10.1021/ja2082735. Epub 2011 Oct 7.

DOI:10.1021/ja2082735

PMID:21961523

Abstract

We describe an efficient, bubble-free nanoscale motor consisting of a copper-platinum (Cu-Pt) segmented rod that operates as a nanobattery in dilute aqueous Br(2) or I(2) solutions. The motion of the rod is powered by self-electrophoresis caused by redox reactions occurring on the two different metal segments. Asymmetric ratchet-shaped pure copper nanorods were also found to rotate and tumble in aqueous Br(2) solution because of the ion gradient arising from asymmetric dissolution of copper.

摘要

我们描述了一种高效、无泡的纳米马达，由一个铜铂（Cu-Pt）分段棒组成，在稀的水溴（Br2）或碘（I2）溶液中作为纳米电池运行。棒的运动由两个不同金属段上发生的氧化还原反应引起的自电泳驱动。由于铜的不对称溶解产生的离子梯度，不对称的鼠笼状纯铜纳米棒也被发现可以在水溴（Br2）溶液中旋转和翻滚。