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Electrochemical sensor based on N-CQDs/AgNPs/β-CD nanomaterials: Application to simultaneous selective determination of Fe(II) and Fe(III) irons released from iron supplement in simulated gastric fluid by Xuemei Ma; Jiayi Yu; Lin Wei; Qian Zhao; Liyong Ren; Zhiyong Hu is a Chemistry article available to read on EtoBox.

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Simultaneous selective determination of Fe (II) and Fe (III) is of great significance to the study of iron ion tracking and release of iron supplement in gastric fluid. In this paper, a composite material (N-CQDs/AgNPs/β-CD) was prepared by a one-pot method. The various characterizations confirmed the silver nanoparticles (AgNPs) grew in situ on the surface of nitrogen-doped carbon quantum dots (N-CQDs), and the β-cyclodextrin (β-CD) and AgNPs linked together by Ag–O bonds finally presented gourd-like nanoparticles on the surface of N-CQDs. Then, N-CQDs/AgNPs/β-CD modified glassy carbon electrode (GCE) was applied to detect Fe(II) and Fe(III) simultaneously. The cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results confirmed that N-CQDs/AgNPs/β-CD enhanced electrode performances because of the synergistic effect between N-CQDs, AgNPs and β-CD. The sensor was successfully applied for the determination by differential pulse voltammetry (DPV) of Fe(II) and Fe(III) released from four iron supplementations in simulated gastric fluid (SGF).

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Author

Xuemei Ma; Jiayi Yu; Lin Wei; Qian Zhao; Liyong Ren; Zhiyong Hu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Chemistry (Physical Sciences)