PMID- 36806988 OWN - NLM STAT- MEDLINE DCOM- 20230224 LR - 20230308 IS - 1436-5073 (Electronic) IS - 0026-3672 (Linking) VI - 190 IP - 3 DP - 2023 Feb 20 TI - Electrochemical determination of benomyl using MWCNTs interspersed graphdiyne as enhanced electrocatalyst. PG - 98 LID - 10.1007/s00604-023-05684-4 [doi] AB - Graphdiyne (GDY) has attracted a lot of interest in electrochemical sensing application with the advantages of a large conjugation system, porous structure, and high structure defects. Herein, to further improve the sensing effect of GDY, conductive MWCNTs were chosen as the signal accelerator. To get a stable composite material, polydopamine (PDA) was employed as connecting bridge between GDY and MWCNTs-NH(2), where DA was firstly polymerized onto GDY, followed by covalently linking MWCNTs-NH(2) with PDA through Michael-type reaction. The formed GDY@PDA/MWCNTs-NH(2) composite was then explored as an electrochemical sensor for benomyl (Ben) determination. GDY assists the adsorption and accumulation of Ben molecules to the sensing surface, while MWCNTs-NH(2) can enhance the electrical conductivity and electrocatalytic activity, all of which contributing to the significantly improved performance. The proposed sensor displays an obvious oxidation peak at 0.72 V (vs. Hg|Hg(2)Cl(2)) and reveals a wide linear range from 0.007 to 10.0 microM and a low limit of detection (LOD) of 1.8 nM (S/N = 3) toward Ben detection. In addition, the sensor shows high stability, repeatability, reproducibility, and selectivity. The feasibility of this sensor was demonstrated by detecting Ben in apple and cucumber samples with a recovery of 94-106% and relative standard deviations (RSDs) less than 2.3% (n = 5). A sensitive electrochemical sensing platform was reported for benomyl (Ben) determination based on a highly stable GDY@PDA/MWCNTs-NH(2) composite. CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature. FAU - Shi, Min AU - Shi M AD - Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China. AD - Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Materials and Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. FAU - Xue, Shu-Ya AU - Xue SY AD - Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China. FAU - Peng, Guan-Wei AU - Peng GW AD - Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Materials and Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. FAU - Xu, Jing-Kun AU - Xu JK AD - Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China. FAU - Gao, Yan-Sha AU - Gao YS AD - Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Materials and Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. FAU - Liu, Shu-Wu AU - Liu SW AD - Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Materials and Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. FAU - Duan, Xue-Min AU - Duan XM AUID- ORCID: 0000-0003-2556-039X AD - Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, Flexible Electronics Innovation Institute (FEII), School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China. duanxuemin@126.com. FAU - Lu, Li-Min AU - Lu LM AD - Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Materials and Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. lulimin816@hotmail.com. LA - eng GR - 51862014/National Natural Science Foundation of China/ GR - 22064010/Innovative Research Group Project of the National Natural Science Foundation of China/ GR - 20212ACB204006/Natural Science Foundation of Jiangxi Province/ GR - 20202ACBL213009/Natural Science Foundation of Jiangxi Province/ GR - 20212BAB203019/Natural Science Foundation of Jiangxi Province/ GR - YC2021-S750/Provincial Projects for Postgraduate Innovation in Jiangxi/ GR - 20171BCD40015/Jiangxi Provincial Key Laboratory of Drug Design and Evaluation/ PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230220 PL - Austria TA - Mikrochim Acta JT - Mikrochimica acta JID - 7808782 RN - 0 (graphdiyne) RN - 0 (Nanotubes, Carbon) RN - TLW21058F5 (Benomyl) SB - IM MH - *Nanotubes, Carbon/chemistry MH - Electrochemical Techniques MH - Benomyl MH - Reproducibility of Results OTO - NOTNLM OT - Benomyl OT - Differential pulse voltammetry OT - Electrocatalysts OT - Electrochemical sensor OT - Graphdiyne OT - Michael addition reaction OT - Polydopamine EDAT- 2023/02/23 06:00 MHDA- 2023/02/25 06:00 CRDT- 2023/02/22 11:13 PHST- 2022/10/17 00:00 [received] PHST- 2023/01/30 00:00 [accepted] PHST- 2023/02/22 11:13 [entrez] PHST- 2023/02/23 06:00 [pubmed] PHST- 2023/02/25 06:00 [medline] AID - 10.1007/s00604-023-05684-4 [pii] AID - 10.1007/s00604-023-05684-4 [doi] PST - epublish SO - Mikrochim Acta. 2023 Feb 20;190(3):98. doi: 10.1007/s00604-023-05684-4.