Functionalized MXene fiber electrode for the electrochemical sensing of urinary ammonia  

作　　者：Yu Liu Xu Zeng Yulong Wu Habib Ullah Khan Fei Xiao Bao Yu Xia Yimin Sun 

机构地区：[1]Hubei Key Laboratory of Plasma Chemistry and Advanced Materials,School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China [2]Key Laboratory of Material Chemistry for Energy Conversion and Storage,Ministry of Education,School of Chemistry and Chemical Engineering,Huazhong University of Science&Technology,Wuhan 430074,China

出　　处：《Advanced Sensor and Energy Materials》2024年第4期1-9,共9页先进传感器与能源材料（英文）

基　　金：supported by the National Natural Science Foundation of China(No.51504168);the Key Research and Development Plan Project in Hubei Province(No.2022BAD009);the Graduate Education Innovation Foundation of Wuhan Institute of Technology(No.CX2022222).

摘　　要：The development of technologically advanced fiber-based flexible microelectrodes has been of extensive research interest in healthcare systems because of their unique construction and synergistic effect on multifunctional properties.In this work,we constructed functional MXene fiber(MXF)by a simple and versatile wet spinning method,and then,a well-aligned ZIF-67 nanoarray was grown in situ on the surface.Using the chemical vapor deposition(CVD)method,carbon nanotubes(CNTs)were produced on MXF via the pyrolysis of ZIF-67 and melamine.Finally,Pt nanoparticles were electrodeposited on the CNTs forest,and a Pt@CNTs/MXF electrode was obtained.Owing to the plethora of surface active sites and the synergistic effects between MXene,CNTs,and Pt nanoparticles,the as-fabricated fiber electrode enabled the precise detection of ammonia under alkaline conditions via differential pulse voltammetry(DPV),which exhibited a linear range of 0.1μM–10 mM and a detection limit of 73.2 nM.Due to their good performance in ammonia detection,Pt@CNTs/MXF electrodes could be adopted to determine the ammonia concentration in urine for clinical estimation,which provides a practical approach for the diagnosis of urinary ammonia-associated diseases.

关 键 词：MXenefiber Carbon nanotubes Urinary ammonia detection Electrochemical sensing 

分 类 号：TB3[一般工业技术—材料科学与工程]