A novel low-dimensional heteroatom doped Nd2O3 nanostructure for enhanced electrochemical sensing of carbendazim

Reasonable design and synthesis of high-efficiency nanocatalysts are of great significance for the electrocatalytic analysis of fungicides. In this paper, La-doped Nd2O3 (La-Nd2O3) nanomaterials are synthesized by a hydrothermal method and characterized via SEM, TEM, EDS, XPS and XRD. The results co...

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Bibliographic Details
Published in:New journal of chemistry 2019, Vol.43 (35), p.14009-14019
Main Authors: Zhou, Yuanzhen, Yang, Li, Han, Ping, Dang, Yuan, Zhu, Mengyi, Li, Qian, Fu, Yile
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Coated electrodes
Electrochemical analysis
Electron transfer
Fungicides
Nanomaterials
Synthesis
X ray photoelectron spectroscopy
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Summary:Reasonable design and synthesis of high-efficiency nanocatalysts are of great significance for the electrocatalytic analysis of fungicides. In this paper, La-doped Nd2O3 (La-Nd2O3) nanomaterials are synthesized by a hydrothermal method and characterized via SEM, TEM, EDS, XPS and XRD. The results confirm that the trigonal Nd2O3 and La-Nd2O3 are successfully synthesized, and La is localized on the surface of the Nd2O3 lattice. Compared with Nd2O3, La-Nd2O3 nanomaterials have a larger surface area. In addition, the prepared Nd2O3 and La-Nd2O3 catalysts coated on a carbon paste electrode (CPE) are used as working electrodes to investigate their electrochemical performance for carbendazim (CBZ). Probably due to the synergistic electronic transfer process and dual-function effects of La-Nd2O3, the La-Nd2O3 modified electrode exhibits a stronger redox signal and faster electron transfer rate, thus resulting in superior electrocatalytic activity against CBZ. The proposed CBZ sensor produces a wide linear range of 0.08 to 50 μM and a low detection limit (0.027 μM, S/N = 3) by differential pulse voltammetry (DPV). Moreover, the La-doped catalyst has a long-term electrochemical activity and catalytic stability under steady state conditions, which indicates that La-Nd2O3 is a promising catalyst in electrocatalysis and sensing applications.
ISSN:1144-0546
1369-9261
DOI:10.1039/c9nj02778e