A self‐supported, nanoporous gold microelectrode decorated with various nanoparticles can be used for real‐time electrochemical monitoring, and the high performance of these electrochemical biosensors originates from their unique and seamless solid/porous nanoarchitecture. In this work, new, 3D, nanoporous, gold‐supported Pt nanoparticles are fabricated by Au‐Zn alloying/dealloying and template membrane deposition methods to produce Au‐Pt micromotors with highly accelerated motion. The speed of the micromotors can reach 1025 µm s⁻¹ in a 10% H₂O₂ solution, which is almost three times faster than unetched Au‐Pt micromotors. Four motion forms (circle, helical, circle and linear alternating, and linear) are demonstrated, and the speed of the circle motion is the fastest motion form. It is envisioned that the new fabrication method and enhanced motion can promote the micromotor efficiency for transport and delivery.

中文翻译：

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3D纳米多孔金支撑的Pt纳米颗粒作为高度加速的催化Au-Pt微电机

装饰有各种纳米粒子的自支撑纳米多孔金微电极可用于实时电化学监测，这些电化学生物传感器的高性能源于其独特且无缝的固体/多孔纳米结构。在这项工作中，通过Au-Zn合金化/脱合金和模板膜沉积方法制造了新型的3D，纳米孔，金支撑的Pt纳米颗粒，以生产具有高度加速运动的Au-Pt微型电动机。在10％H ₂ O ₂中，微电机的速度可以达到1025 µm s ^-1解决方案，几乎比未蚀刻的Au-Pt微电机快三倍。演示了四种运动形式（圆形，螺旋形，圆形和线性交替以及线性），并且圆形运动的速度是最快的运动形式。可以预见，新的制造方法和增强的运动可以提高微电机的运输和输送效率。