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Platinized carbon nanoelectrodes as potentiometric and amperometric SECM probes
Journal article   Open access   Peer reviewed

Platinized carbon nanoelectrodes as potentiometric and amperometric SECM probes

Keke Hu, Yang Gao, Yixian Wang, Yun Yu, Xin Zhao, Susan A. Rotenberg, Ebru Gokmese, Michael V. Mirkin, Gary Friedman and Yury Gogotsi
Journal of solid state electrochemistry, v 17(12), pp 2971-2977
01 Dec 2013
url
https://hdl.handle.net/11491/1548View
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Abstract

Electrochemistry Physical Sciences Science & Technology
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.

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Electrochemistry
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