Electrochemical preparation of thin-layered molybdenum disulfide-poly(m-aminobenzenesulfonic acid) nanocomposite for TNT detection
Recently,molybdenum disulfide-based nanocomposites have been widely used in electrochemical sensing area.In this paper,molybdenum disulfide-poly(m-aminobenzenesulfonic acid) (MoS2-PABSA) nanocomposite was prepared through a simple electropolymerization procedure for TNT detection.The pre-obtained thin-layered MoS2 nanosheet was adopted as the scaffold in the electropolymerization process and the m-aminobenzenesulfonic acid monomer was effectively electrodeposited on it via cyclic voltammetry.The morphology and electrochemical behaviors of MoS2-PABSA nanocomposite were investigated by scanning electron microscopy,Fourier transform infrared spectroscopy,X-ray diffraction and some electrochemical methods.The obtained nanocomposite possesses excellent electrochemical detecting performance towards aromatic ring compounds,such as 2,4,6-trinitrotoluene,TNT,which have strong π-π interaction with the MoS2-PABSA sensing platform.The detailed electrochemical characterization of MoS2-PABSA showed the influence of electropolymerization cycles and pH values on detection of TNT.Under the optimumcondition,highly sensitive detection for TNT was realized with the limit of detection of 0.043 ppb (0.187 nmol L-1) and a linear range of 0.1-200 ppb.This research proves that the MoS2-PABSA was aworthy electrochemical sensing platformfor further simple and sensitive detection of some other aromatic ring compounds.
Thin-layered MoS2 m-Aminobenzenesulfonic acid TNT detection Cyclic voltammetry
Tao Yang Renzhong Yu Huaiyin Chen Ruirui Yang Shiying Wang Xiliang Luo Kui Jiao
Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China
国际会议
南京
英文
70-75
2016-12-23（万方平台首次上网日期，不代表论文的发表时间）