Highly sensitive detection of hydrogen peroxide at a carbon nanotube fiber microelectrode coated with palladium nanoparticles

被引：2
|
作者：
Yang Liu
Gengzhi Sun
Chunbo Jiang
Xin Ting Zheng
Lianxi Zheng
Chang Ming Li
机构：
[1] Nanyang Technological University,School of Chemical and Biomedical Engineering & Center for Advanced Bionanosystems
[2] Nanyang Technological University,School of Mechanical and Aerospace Engineering
[3] Southwest University,Institute for Clean Energy & Advanced Materials
[4] Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies,undefined
来源：
Microchimica Acta | 2014年 / 181卷
关键词：
Hydrogen peroxide; Sensing; Palladium nanoparticle; Carbon nanotube fiber; Microelectrode;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report on a carbon nanotube (CNT) fiber microelectrode coated with palladium nanoparticles (PdNPs) and enabling electrochemical sensing of hydrogen peroxide (H2O2). The synergistic effects of the CNT fibers (good mechanical strength and large surface area) and of the PdNPs (high electrocatalytic activity) result in a microelectrode for H2O2 that exhibits a 2-s response time, a detection limit as low as 2 μM, a sensitivity of 2.75 A cm−2 M−1, and a linear response range from 2 μM to 1.3 mM (R = 0.9994). The sensor is also selective and not interfered by potentially competing species in biological fluids, thus representing an inexpensive but highly sensitive and selective microsensor for H2O2.
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收藏
页码：63 / 70
页数：7
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