PMID- 30933859 OWN - NLM STAT- MEDLINE DCOM- 20200824 LR - 20200824 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 373 DP - 2019 Jul 5 TI - Metal-organic frameworks-derived MnO(2)/Mn(3)O(4) microcuboids with hierarchically ordered nanosheets and Ti(3)C(2) MXene/Au NPs composites for electrochemical pesticide detection. PG - 367-376 LID - S0304-3894(19)30365-6 [pii] LID - 10.1016/j.jhazmat.2019.03.083 [doi] AB - Transition metal oxides (TMOs) derived from metal - organic frameworks (MOF) combined with two-dimensional (2D) transition metal carbides possibly pave an innovative pathway for designing promising biosensors. Herein, a novel electrochemical sensing platform has been fabricated for ultra-sensitive determination of organophosphorus pesticides (OPs), based on MOF-derived MnO(2)/Mn(3)O(4) and Ti(3)C(2) MXene/Au NPs composites. Remarkably, the three-dimensional (3D) MnO(2)/Mn(3)O(4) hierarchical microcuboids derived from Mn-MOF are composed of vertically aligned, highly ordered nanosheets, and further combined with MXene/Au NPs yields synergistic signal amplification effect, with outstanding electrochemical performance, large specific surface area, and good environmental biocompatibility. Under the optimum conditions, the reported sensing platform AChE-Chit/MXene/Au NPs/MnO(2)/Mn(3)O(4)/GCE can be utilized to detect methamidophos in a broad concentration range (10(-12)-10(-6) M), together with a good linearity (R = 0.995). Besides that, the biosensor possesses a low limit of detection (1.34 x 10(-13) M), which far exceeds the maximum residue limits (MRLs) for methamidophos (0.01 mg/kg) established by European Union. Additionally, the feasibility of the proposed biosensor for detecting methamidophos in real samples has been demonstrated with excellent recoveries (95.2%-101.3%). Interestingly, the unique structures and remarkable properties of these composites make them attractive materials for various electrochemical sensors for monitoring either pesticide residuals or other environmentally deleterious chemicals. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Song, Dandan AU - Song D AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Jiang, Xinyu AU - Jiang X AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Li, Yanshan AU - Li Y AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Lu, Xiong AU - Lu X AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Luan, Sunrui AU - Luan S AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Wang, Yuanzhe AU - Wang Y AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Li, Yan AU - Li Y AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. FAU - Gao, Faming AU - Gao F AD - Key Laboratory of Applied Chemistry, Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, PR China. Electronic address: gaofaming@ysu.edu.cn. LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190323 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Manganese Compounds) RN - 0 (Organothiophosphorus Compounds) RN - 0 (Oxides) RN - 0 (Pesticides) RN - 12070-08-5 (titanium carbide) RN - 64J2OA7MH3 (manganese oxide) RN - 7440-57-5 (Gold) RN - 8Z083FM94W (methamidophos) RN - D1JT611TNE (Titanium) SB - IM MH - *Electrochemical Techniques MH - Gold/chemistry MH - Manganese Compounds/*chemistry MH - Nanostructures/*chemistry/ultrastructure MH - Organothiophosphorus Compounds/analysis MH - Oxides/*chemistry MH - Pesticides/*analysis MH - Titanium/*chemistry OTO - NOTNLM OT - AChE biosensor OT - MOF-derived MnO(2)/Mn(3)O(4) OT - Methamidophos OT - Ti(3)C(2)MXene/Au NPs EDAT- 2019/04/02 06:00 MHDA- 2020/08/25 06:00 CRDT- 2019/04/02 06:00 PHST- 2018/11/19 00:00 [received] PHST- 2019/03/09 00:00 [revised] PHST- 2019/03/18 00:00 [accepted] PHST- 2019/04/02 06:00 [pubmed] PHST- 2020/08/25 06:00 [medline] PHST- 2019/04/02 06:00 [entrez] AID - S0304-3894(19)30365-6 [pii] AID - 10.1016/j.jhazmat.2019.03.083 [doi] PST - ppublish SO - J Hazard Mater. 2019 Jul 5;373:367-376. doi: 10.1016/j.jhazmat.2019.03.083. Epub 2019 Mar 23.