Integrating Ultrathin Polypyrrole Framework on Nickel‐Cobalt Layered Double Hydroxide as an Amperometric Sensor for Non‐enzymatic Glucose Determination. Issue 10 (25th July 2018)

• Record Type: Journal Article
• Authors: Ni, Gang; Cheng, Jun; Dai, Xin; Guo, Zehao; Ling, Xiang; Yu, Tao; Sun, Zhenjie
• Is Part Of: Electroanalysis. Volume 30:Issue 10(2018)
• Page Start: 2366
• Page End: 2373
• Publication Date: 2018-07-25
• Subjects: Layered double hydroxide -- Conductive framework -- Electrochemistry -- Sensors; Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201800362
• Languages: English
• ISSNs: 1040-0397

Abstract

Abstract: We prepared a novel amperometric sensor based on nickel cobalt layered double hydroxide (NiCo‐LDH) coupling with ultrathin polypyrrole shell (LDH@PPy) for enzyme‐free determination of glucose. Using a simple vapor polymerization route, PPy forms an internal conductive framework surrounding the LDH lamellas, leading to improved electronic conductivity as well as mitigated electrochemical impedance. As a consequence, the LDH@PPy sensor endows excellent electrocatalytic performance for glucose determination. High sensitivity (46.04 μA mM −1 cm −2 and 292.84 μA mM −1 cm −2 ), wide linear range (5–50 μM and 0.05–8.2 mM), and a low detection limit of 0.80 μM (S/N=3) could be implemented. The optimization of operation potential, reproducibility, and anti‐interference properties of the sensor were also conducted. The LDH@PPy composite presents a promising candidate for rapid and accurate determination of glucose in practical applications. Abstract :