Ni-MOF/PANI-Derived CN-Doped NiO Nanocomposites for High Sensitive Nonenzymic Electrochemical Detection
- PDF / 2,867,578 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 102 Downloads / 228 Views
Ni‑MOF/PANI‑Derived CN‑Doped NiO Nanocomposites for High Sensitive Nonenzymic Electrochemical Detection Siqin Jia1 · Qiguan Wang1 · Sumin Wang1 Received: 7 July 2020 / Accepted: 22 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Flower-like carbon and nitrogen atomic doped NiO nanocomposite (CN-NiO) has been derived from the Ni-MOF/polyaniline (PANI) calcined at high temperature, which is used to construct a nonenzymic electrochemical sensor by coating it on glassy carbon electrode (GCE). The results of electrochemical tests show that the CN-NiO@GCE has the linear dependency of current response on glucose concentration ranged from 5.0 × 10–7 to 3 × 10–3 mol/L. It has higher sensitivity (1144 μA/ mM/cm2) and lower detection limit (5.0 × 10–7 mol/L). In addition, the resulting CN-NiO@GCE shows long-term stability. At the same time, this electrode has good selectivity, with no electrochemical response to the interfering concomitant such as urea, nifedipine, ascorbic acid and dopamine. It indicates that Ni-MOF-derived CN-doped NiO nanocomposites are good electrochemical sensing materials, which find potential application to fabricate nonenzymic electrochemical recognition and detection devices. Keywords Nickel-based metal organic framework · Polyaniline · NiO · Non-enzymic electrochemical sensor
1 Introduction In the recent years, metal–organic frameworks (MOFs) have attracted great interest owing to their ultra-high porosity, large specific area and broad potential applications such as catalysis, sensors, chemical delivery and gas storage or separation [1–6]. Especially, they are regarded as the feasible templates to prepare various functional nanomaterials, due to the simple synthesis and varied pore sizes. As an example, by carbonizing and/or polymerizing the carbon precursor contained in MOF-5, porous nanocarbons showing a high specific surface area have been obtained, which also Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10904-020-01767-4) contains supplementary material, which is available to authorized users. * Qiguan Wang [email protected] * Sumin Wang [email protected] 1
The Youth Innovation Team of Shaanxi Universities, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, People’s Republic of China
displayed excellent electrochemical properties [7]. Moreover, nanostructured metal oxides such as nanometered CuO were synthesized by controlling pyrolysis of metal-based MOF, and applied as electrodes material [8]. Determination of glucose concentration in blood is currently received intensive attentions, which can be used to diagnose diabetes [9, 10]. Compared with other methods including acoustic, transdermal, fluorescent, electronic methods [11–16], the electrochemical method to detect the glucose supports an economical and highly fast route to detect the glucose. Generally, the electrochemic
Data Loading...
