Platinized carbon nanoelectrodes as potentiometric and amperometric SECM probes
Platinized carbon nanoelectrodes as potentiometric and amperometric SECM probes
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镀铂碳纳米电极作为电位和电流 SECM 探针
DOI：
10.1007/s10008-013-2173-5
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发表时间：
2013-12-01
影响因子：
2.5
通讯作者：
Gogotsi, Yury
中科院分区：
文献类型：
--
作者：
Hu, Keke;Gao, Yang;Gogotsi, Yury
微米尺寸的镀铂碳电极先前已用于检测生物系统中的活性氧和氮物质（ROS和RNS）。在这里，我们报告的石英密封的镀铂碳纳米电极的制备和表征。这样的电极可以用作扫描电化学显微镜（SECM）中的尖端。通过稳态伏安法、扫描电子显微镜和SECM对所制备的电极进行了表征。除了ROS/RNS检测之外，镀铂纳米电极的高表面积使其成为有用的电位探针。与以前制造的镀铂电极不同，碳电极具有非常薄的绝缘护套，这对于生物细胞内的实验和高分辨率SECM成像至关重要。
Micrometer-sized platinized carbon electrodes have previously been used for the detection of reactive oxygen and nitrogen species (ROS and RNS) in biological systems. Here, we report the preparation and characterization of quartz-sealed platinized carbon nanoelectrodes. Such electrodes can be employed as tips in the scanning electrochemical microscope (SECM). The prepared electrodes were characterized by steady-state voltammetry, scanning electron microscopy, and SECM. In addition to ROS/RNS detection, the high surface area of a platinized nanoelectrode makes it a useful potentiometric probe. Unlike previously fabricated platinized electrodes, carbon electrodes possess a very thin insulating sheath, which is essential for experiments inside biological cells and high-resolution SECM imaging.