title: A new electrochemical sensor of nitro aromatic compound based on three-dimensional porous Pt-Pd nanoparticles supported by graphene-multiwalled carbon nanotube composite.
abstract: In this study, an electrochemical sensor of nitro aromatic compound based on three-dimensional porous Pt-Pd nanoparticles (Pt-Pd NPs) supported by reduced graphene oxide (rGO) nanosheets-multiwalled carbon nanotube (CNTs) nanocomposite (marked as Pt-Pd NPs/CNTs-rGO) was investigated for the first time. This hybrid nanocomposite has been prepared via a facile and versatile hydrothermal synthetic strategy while its structure and property are evaluated by X-ray diffraction (XRD), transmission electron microscopy (TEM) and electrochemical impedance spectroscopy (EIS). The result shows that 3D porous Pt-Pd NPs/CNTs-rGO nanocomposite has a large specific surface area of 326.6m(2)g(-1) and exhibited ultrahigh rate capability and good cycling properties at high rates. Electrochemical studies have been performed for the nitro aromatic compounds detection by using different pulse voltammetry (DPV) techniques. The proposed nanocomposite exhibited much enhanced elctrocatalytic activity and high sensitivity toward the detection of nitro aromatic compounds which compared with Pt-Pd NPs dispersed on functionalized rGO, Pt-Pd NPs dispersed on functionalized CNTs, rGO-CNTs and bare glass carbon electrode (GCE). On the basis of the above synergetic electrochemical sensing and synthesis procedure, the hybrid material can be recommended as a robust material for sensor-related applications. Moreover, the proposed sensor exhibits high reproducibility, long-time storage stability and satisfactory anti-interference ability.
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Cai-Xia
authors.initials: CX
authors.lastname: Yuan
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Yan-Ru
authors.initials: YR
authors.lastname: Fan
authors.affiliation: College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China.
authors.lastname: Tao-Zhang
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Hui-Xia
authors.initials: HX
authors.lastname: Guo
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Jing-Xuan
authors.initials: JX
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Yong-Lan
authors.initials: YL
authors.lastname: Wang
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Duo-Liang
authors.initials: DL
authors.lastname: Shan
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China. Electronic address: luxq@nwnu.edu.cn.
authors.forename: Xiao-Quan
authors.initials: XQ
authors.lastname: Lu
mesh_terms: D003217:Conductometry / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D006841:Hydrocarbons, Aromatic / Q000032:analysis* / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D008839:Microelectrodes; D008968:Molecular Conformation; D053761:Nanocomposites / Q000737:chemistry / Q000648:ultrastructure; D058608:Nanopores / Q000648:ultrastructure; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D009574:Nitro Compounds / Q000032:analysis* / Q000737:chemistry; D010165:Palladium / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D016062:Porosity
chemical_list: D006841:Hydrocarbons, Aromatic; D037742:Nanotubes, Carbon; D009574:Nitro Compounds; D010984:Platinum; D010165:Palladium; D006108:Graphite
keywords: Carbon nanotube; Graphene; Nitro aromatic compounds; Pt–Pd nanoparticles