Facile one-step fabrication of a novel 3D honeycomb-like bismuth nanoparticles decorated N-doped carbon nanosheet frameworks: Ultrasensitive electrochemical sensing of heavy metal ions. (10th March 2018)

• Record Type: Journal Article
• Authors: Lu, Zhiwei; Dai, Wanlin; Lin, Xueni; Liu, Baichen; Zhang, Junjun; Ye, Jiaping; Ye, Jianshan
• Is Part Of: Electrochimica acta. Volume 266(2018)
• Page Start: 94
• Page End: 102
• Publication Date: 2018-03-10
• Subjects: Bismuth nanoparticle -- N-doped carbon nanosheet frameworks (NCNF) -- Heavy metal ions -- Electrochemical sensors -- Anodic stripping voltammetry (ASV); Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2018.01.188
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: A facile and low cost strategy for fabrication of a novel 3D honeycomb-like N-doped carbon nanosheet framework decorated with bismuth nanoparticles (3D Bi-NCNF) via co-pyrolysis of polyvinylpyrrolidone (PVP) and bismuth nitrate. As prepared 3D Bi-NCNF were characterized by a variety of techniques, i.e., field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy, N2 adsorption-desorption analysis, thermogravimetric analysis and X-ray photoelectron spectroscopy. Newly designed 3D Bi-NCNF nanocomposite possess porous network structures, high specific surface area and high nitrogen content dopant acts as an electrode-modification material for selective and sensitive electrochemical sensors for the assay of Cd 2+ and Pb 2+ by square wave anodic stripping voltammetry (SWASV). Under optimized conditions, Bi-NCNF modified glassy carbon electrodes (GCEs) exhibited excellent electroanalytical performance for the simultaneous detection of Cd 2+ and Pb 2+, a wide linear response ranges of 1–120 μg L −1, with an ultralow detection limits of 0.02 and 0.03 μg L −1 (S/N = 3) were observed, respectively. Moreover, excellent repeatability, reproducibility and stability, and reliable assays in tap water samples were realized with constructed sensors. Therefore, this study provides a novel strategy for fabrication of metal nanoparticles decorated nitrogen-doped carbon-based frameworks materials, which could be utility for constructing sensitive electrochemical sensors in the convenient and rapid detection of toxic metal ions. Graphical abstract: A novel 3D honeycomb-like N-Doped Carbon Nanosheet Frameworks decorated with bismuth nanoparticles were prepared and as a sensitive electrochemical sensor for simultaneous assays of Cd 2+ and Pb 2+ by square wave anodic stripping voltammetry (SWASV). Image 1 Highlights: One-step synthesis of 3D honeycomb-like Bi-NCNF nanomaterials by pyrolysis method. Newly designed 3D Bi-NCNF nanocomposites possess significantly enhanced electrochemical activity. Selective and sensitive electrochemical sensors for the detection of Cd 2+ and Pb 2+ .