2D/2D heterostructure Ni-Fe LDH/black phosphorus nanosheets with AuNP for noxious substance diphenylamine detection in food samples

Ballur Prasanna, S., Lin, Y.-C., Kannan Ramaraj, S., Dhawan, U. , Liu, X., Tung, C.-W., Sakthivel, R. and Chung, R.-J. (2024) 2D/2D heterostructure Ni-Fe LDH/black phosphorus nanosheets with AuNP for noxious substance diphenylamine detection in food samples. Food Chemistry, 432, 137295. (doi: 10.1016/j.foodchem.2023.137295) (PMID:37659324)

Abstract

In this study, gold nanoparticles decorated on nickel–iron layered double hydroxide with black phosphorus nanosheets (AuNP/Ni-Fe LDH/BPNSs) composite were prepared using a stirring method. Analyte tracing is required for developing viable sensors. The AuNP/Ni-Fe LDH/BPNSs composite exhibited a large specific surface area, high conductivity, high electrocatalytic activity, and rapid electron transfer. These properties play a vital role in monitoring diphenylamine (DPA) in food samples. The formation of the AuNP/Ni-Fe LDH/BPNS composite was confirmed using various structural and morphological characterization techniques. The electroanalytical character of the AuNP/Ni-Fe LDH/BPNSs composite was evaluated using voltammetry. Interestingly, the AuNP/Ni-Fe LDH/BPNSs showed a wide linear range of 0.0125–1003.825 μM and a detection limit of 4.63 nM with a sensitivity of 0.399 µA µM−1 cm−2. The constructed sensor shows considerable selectivity, stability, repeatability, and reproducibility, and the practicability of DPA was monitored in the apples, sweet tomatoes, pears, and grapes with satisfactory recoveries.

• Item Type: Articles
• Additional Information: The authors are grateful for the financial support of this research from the National Science and Technology Council of Taiwan (MOST 109-2222-E-027-004; MOST 111-2221-E-027-102; NSTC 112-2221-E-027-013-MY3).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Dhawan, Dr Udesh
• Authors: Ballur Prasanna, S., Lin, Y.-C., Kannan Ramaraj, S., Dhawan, U., Liu, X., Tung, C.-W., Sakthivel, R., and Chung, R.-J.
• College/School: College of Science and Engineering > School of Engineering > Biomedical Engineering
• Journal Name: Food Chemistry
• Publisher: Elsevier
• ISSN: 0308-8146
• ISSN (Online): 1873-7072
• Published Online: 25 August 2023
• Copyright Holders: Copyright © 2023 Elsevier Ltd
• First Published: First published in Food Chemistry 432:137295
• Publisher Policy: Reproduced in accordance with the publisher copyright policy