1. Fe2Ni2N nanosheet array: an efficient non-noble-metal electrocatalyst for non-enzymatic glucose sensing
- Author
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Fengli Qu, Zhiang Liu, Xuping Sun, Yuyao Ji, Xiaoqin Cao, Chao You, Gu Du, Rui Dai, Xiaoli Xiong, Abdullah M. Asiri, and Ke Huang
- Subjects
Detection limit ,Nanocomposite ,Materials science ,Mechanical Engineering ,Bioengineering ,Nanotechnology ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,Electrocatalyst ,01 natural sciences ,0104 chemical sciences ,Linear range ,Mechanics of Materials ,Specific surface area ,Electrode ,General Materials Science ,Electrical and Electronic Engineering ,0210 nano-technology ,Nanosheet - Abstract
It is very important to develop enhanced electrochemical sensing platforms for molecular detection and non-noble-metal nanoarray architecture, as electrochemical catalyst electrodes have attracted great attention due to their large specific surface area and easy accessibility to target molecules. In this paper, we demonstrate that an Fe2Ni2N nanosheet array grown on Ti mesh (Fe2Ni2N NS/TM) shows high electrocatalytic activity toward glucose electrooxidation in alkaline medium. As an electrochemical glucose sensor, such an Fe2Ni2N NS/TM catalyst electrode demonstrates superior sensing performance with a short response time of less than 5 s, a wide linear range of 0.05 μM-1.5 mM, a low detection limit of 0.038 μM (S/N = 3), a high sensitivity of 6250 μA mM-1 cm-2, as well as high selectivity and long-term stability.
- Published
- 2017
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