Academic Journal
β-MnO
| العنوان: | β-MnO |
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| المؤلفون: | Xu, Jinju, Lan, Tian, Qin, Ziyi, Liao, Chunhui, Yang, Siyu, Shi, Shuyun |
| المصدر: | Biosens Bioelectron ; ISSN:1873-4235 ; Volume:271 |
| بيانات النشر: | Elsevier Science |
| سنة النشر: | 2025 |
| المجموعة: | PubMed Central (PMC) |
| مصطلحات موضوعية: | Background-free analysis, Photothermal assay, Self-assembly, Specific carbaryl detection, β-MnO(2) nanozyme |
| الوصف: | A novel photothermal sensing platform for direct, specific, and background-free detection of carbaryl has been fabricated. Firstly, β-MnO2 with excellent oxidase-like property has been screened out from MnO2 with different crystalline structures. Interestingly, Ni2+ as a chelator with nitrogen atom can modulate the MnO2 catalytic oxidation and assembly of o-phenylenediamine (OPD) to photothermal probe, OPD trimer (triOPD)-Ni2+ polymers, with an excellent photothermal conversion efficiency of 42.4 % under 808 nm laser irradiation. Then, carbaryl was hydrolyzed into reductive 1-naphthol in alkaline condition, which directly decomposed β-MnO2 into Mn2+ and significantly hindered the β-MnO2/Ni2+-mediated production of triOPD-Ni2+ polymers. Consequently, the photothermal effect was linearly correlated with carbaryl concentration in the range of 0.05-4.0 μM with a satisfactory limit of detection at 0.018 μM. Moreover, background-free detection of carbaryl can be achieved in actual food samples with good recovery (96.5%-104.3%), low relative standard deviation (≤1.0%), and excellent anti-interference capacity. The established photothermal sensor will not only provide an efficient method for carbaryl assay but also supply a new pathway for detection pesticides. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | https://doi.org/10.1016/j.bios.2024.117050; https://pubmed.ncbi.nlm.nih.gov/39671966 |
| DOI: | 10.1016/j.bios.2024.117050 |
| الاتاحة: | https://doi.org/10.1016/j.bios.2024.117050 https://pubmed.ncbi.nlm.nih.gov/39671966 |
| Rights: | Copyright © 2024 Elsevier B.V. All rights reserved. |
| رقم الانضمام: | edsbas.362B4E60 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.bios.2024.117050 |
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