title: Sensitive electrochemical sensing for polycyclic aromatic amines based on a novel core-shell multiwalled carbon nanotubes@ graphene oxide nanoribbons heterostructure.
abstract: Being awfully harmful to the environment and human health, the qualitative and quantitative determinations of polycyclic aromatic amines (PAAs) are of great significance. In this paper, a novel core-shell heterostructure of multiwalled carbon nanotubes (MWCNTs) as the core and graphene oxide nanoribbons (GONRs) as the shell (MWCNTs@GONRs) was produced from longitudinal partially unzipping of MWCNTs side walls using a simple wet chemical strategy and applied for electrochemical determination of three kinds of PAAs (1-aminopyrene (1-AP), 1-aminonaphthalene and 3,3'-diaminobiphenyl). Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, thermogravimetric analysis and electrochemical methods were used to characterize the as-prepared MWCNTs@GONRs. Due to the synergistic effects from MWCNTs and GONRs, the oxidation currents of PAAs at the MWCNTs@GONRs modified glassy carbon (GC) electrode are much higher than that at the MWCNTs/GC, graphene/GC and bare GC electrodes. 1-AP was used as the representative analyte to demonstrate the sensing performance of the MWCNTs@GONRs/GC electrode, and the proposed modified electrode has a linear response range of 8.0-500.0 nM with a detection limit of 1.5 nM towards 1-AP.
authors.affiliation: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: zhgb1030@ujs.edu.cn.
authors.forename: Gangbing
authors.initials: G
authors.lastname: Zhu
authors.affiliation: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Yinhui
authors.initials: Y
authors.lastname: Yi
authors.affiliation: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Zhixiang
authors.initials: Z
authors.lastname: Han
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.affiliation: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: wuxy@ujs.edu.cn.
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Wu
mesh_terms: D000588:Amines / Q000032:analysis*; D055664:Electrochemical Techniques; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013499:Surface Properties
chemical_list: D000588:Amines; D037742:Nanotubes, Carbon; D010087:Oxides; D011084:Polycyclic Aromatic Hydrocarbons; D006108:Graphite
keywords: Carbon nanotubes; Electrochemical sensor; Environmental analysis; Graphene nanoribbons; Polycyclic aromatic amines