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One-step ultrasonication-assisted synthesis of graphitized multi-walled carbon nanotubes@Super P Li nanocomposite for the determination of isoproturon

文献类型： 外文期刊

作者： Li, Dongdong 1 ; Hu, Xuli 3 ; Zhao, Hongyuan 3 ; Ding, Kunjie 3 ; Li, Fang 3 ; Han, Shixing 3 ; Wang, Hongliang 3 ; Bai, Lianyang 1 ; Liu, Runqiang 3 ;

作者机构： 1.Hunan Univ, Longping Branch, Grad Sch, Changsha 410125, Peoples R China

2.Hunan Acad Agr Sci, Hunan Weed Sci Key Lab, Changsha 410125, Peoples R China

3.Henan Inst Sci & Technol, Xinxiang 453003, Henan, Peoples R China

关键词： Graphitized multi-walled carbon nanotubes; Super P Li; Dot-line-like nanocomposite; Electrochemical sensor; Isoproturon; Synergistic effect

期刊名称：JOURNAL OF POROUS MATERIALS （ 影响因子：2.523； 五年影响因子：2.287 ）

ISSN： 1380-2224

年卷期： 2022 年 29 卷 3 期

页码：

收录情况： SCI

摘要： Carbonaceous nanomaterials have exhibited huge practical prospects as conductive sensitizers for the modification of electrodes. In this work, the nanocomposite of graphitized multi-walled carbon nanotubes@Super P Li carbon nanoparticles (GCNTs@SP-Li) was designed via a simple ultrasonication-assisted strategy, and then the GCNTs@SP-Li/GCE sensor based on the synthesized GCNTs@SP-Li nanocomposite decorating glassy carbon electrode (GCE) was successfully applied in the sensitive detection of isoproturon (ISO). For the GCNTs@SP-Li nanocomposite, GCNTs with porous structure presented excellent adsorption property, which contributed to the preconcentration of ISO and facilitated the electrolyte penetration. Additionally, GCNTs possessed good electrical conductivity owing its higher graphitization degree. More importantly, the interconnected dot-line-like structure of GCNTs@SP-Li nanocomposite acted as conductive "highways" to remarkably reduce the electron transport distance, which could significantly accelerate the process of redox reaction. Benefiting from the synergistic effect of GCNTs and SP-Li, the optimized GCNTs@SP-Li/GCE sensor showed a low detection limit of 0.1653 mu M in the linear concentration of 0.7-30 mu M. Additionally, the proposed sensor exhibited satisfactory recoveries from 97.2 to 101.6% towards the determination of ISO in river water and tap water. This work offers a feasible and cost-effective idea in developing the high-performance ISO electrochemical sensor.

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