Hexagonal nanosheets of pyrrochlore-type lanthanum stannate for sensitive detection of chlorinated pesticide in food and environmental samples

Ramadhass Keerthika Devi; Muthusankar Ganesan; Tse-Wei Chen; Shen-Ming Chen; Rabab Ahmed Rasheed; Wedad A Al-Onazi; Mohamed S Elshikh; Xiaoheng Liu; Jaysan Yu

doi:10.1016/j.foodchem.2022.134516

Hexagonal nanosheets of pyrrochlore-type lanthanum stannate for sensitive detection of chlorinated pesticide in food and environmental samples

Food Chem. 2023 Mar 15;404(Pt A):134516. doi: 10.1016/j.foodchem.2022.134516. Epub 2022 Oct 5.

Authors

Ramadhass Keerthika Devi¹, Muthusankar Ganesan², Tse-Wei Chen³, Shen-Ming Chen¹, Rabab Ahmed Rasheed⁴, Wedad A Al-Onazi⁵, Mohamed S Elshikh⁶, Xiaoheng Liu⁷, Jaysan Yu⁸

Affiliations

¹ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
² Department of Mechanical Engineering, National Taipei University of Technology, Taiwan, ROC.
³ Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom.
⁴ Histology & Cell Biology Department, Faculty of Medicine, King Salman International University, South Sinai, Egypt.
⁵ Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia.
⁶ Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
⁷ Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China. Electronic address: smchen78@ms15.hinet.net.
⁸ Well Fore Special Wire Corporation, 10, Tzu-Chiang 7rd., Chung-Li Industrial Park, Taoyuan, Taiwan.

PMID: 36240561
DOI: 10.1016/j.foodchem.2022.134516

Abstract

2,4,6-Trichlorophenol (TCP) is the most widely used pesticide in the world and has a devastating effect on the environment and human health. As a result of the use of pyrochlore type La₂Sn₂O₇ hexagonal nanosheet (La₂Sn₂O₇ HNS) modified electrode, this work reports on the quick and sensitive electrochemical detection of TCP. The La₂Sn₂O₇ HNS is reported here for the first time and has been made using a simple precipitation and calcination technique. The crystal structure and surface morphologies of La₂Sn₂O₇ HNS have been characterized using XRD, XPS, HR-TEM, and FE-SEM analyses. Detection limits of 0.074 µM and sensitivity of 1.5 µA µM^-1 cm^-2 were achieved using the La₂Sn₂O₇ HNS for TCP detection. It also showed decent selectivity among the common interfering molecules. Additionally, the La₂Sn₂O₇ HNS/GCE sensor was able to detect TCP in water and vegetable samples with >90 % recovery, proving its appropriateness for quick TCP detection.

Keywords: Electrochemical sensor; Lanthanum stannate; Nanosheets; Pyrrochlore; Trichlorophenol.

MeSH terms

Chlorophenols*
Electrochemical Techniques / methods
Electrodes
Humans
Lanthanum / chemistry
Pesticides*

Substances

Lanthanum
Pesticides
Chlorophenols