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Title: | Covalent-organic framework/carbon nanotubes for electrochemical detection of o-nitrophenol | Authors: | Hu, Xiaoxian Xiong, Sina Yang, Juan Ye, Lei Zhang, Yuanyuan Zeng, Ting YANG, Nianjun |
Issue Date: | 2024 | Publisher: | ELSEVIER SCIENCE SA | Source: | DIAMOND AND RELATED MATERIALS, 144 (Art N° 110947) | Abstract: | Covalent organic frameworks (COFs) have aroused much attention as candidate materials for constructing electrochemical sensors. However, their inherent low conductivities have limited their sensing applications. Here, a novel COF/carbon nanotubes (CNTs) composite is prepared via a straightforward ultrasonic method, incorporating amino-functionalized CNTs (NH2-CNTs) into COF composed of 1, 3, 5-benzenetricarboxaldehyde and 1,4-diaminobenzene. The resulting COF/NH2-CNTs composite exhibits high specific surface area, improved conductivity, fast electron transfer capability due to the high porosity of COF, the introduction of NH2- CNTs, and the conjugate interaction between CNTs and COF. The proposed COF/NH2-CNTs-based sensor offers an amplified current toward the electrochemical sensing of o-nitrophenol (o-NP). Notably, the sensor exhibits a wide linear detection range (0.1–100 and 100–1000 μM), a high sensitivity (8.66 and 1.44 μA/(μM cm2)), and a very low detection limit (0.03 μM). Moreover, it is successfully applicable in the quantitative analysis of o-NP in lake water samples with satisfactory recoveries (97.0–105.3 %). This work not only demonstrates the viability of COF-based sensors for the trace-level detection of nitrobenzene contaminants but also enriches the variety of COF-based sensing materials. | Notes: | Yang, J (corresponding author), Wuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Green Chem Engn Proc, Minist Educ,Hubei Key Lab Novel Reactor & Green Ch, Wuhan 430073, Peoples R China. jyangchem@wit.edu.cn |
Keywords: | Electrochemical sensors;Covalent organic frameworks;Carbon nanotubes;O-nitrophenol | Document URI: | http://hdl.handle.net/1942/42543 | ISSN: | 0925-9635 | e-ISSN: | 1879-0062 | DOI: | 10.1016/j.diamond.2024.110947 | ISI #: | 001204474900001 | Rights: | 2024ElsevierB.V.Allrightsreserved. | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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revised manuscript.doc Until 2024-10-01 | Peer-reviewed author version | 2.8 MB | Microsoft Word | View/Open Request a copy |
1-s2.0-S0925963524001602-main.pdf Restricted Access | Published version | 4.93 MB | Adobe PDF | View/Open Request a copy |
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