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
作者： Zhiwei Lu , Wanlin Dai , Xueni Lin , Baichen Liu , Junjun Zhang
DOI: 10.1016/J.ELECTACTA.2018.01.188
关键词: Chemical engineering 、 Metal ions in aqueous solution 、 Nanosheet 、 Thermogravimetric analysis 、 Raman spectroscopy 、 Carbon 、 X-ray photoelectron spectroscopy 、 Glassy carbon 、 Nanocomposite 、 Materials science
摘要: 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 polyvinylpyrrolidone (PVP) nitrate. As prepared Bi-NCNF were characterized by variety techniques, i.e., field-emission scanning electron microscopy, transmission X-ray diffraction, Raman spectroscopy, N2 adsorption-desorption analysis, thermogravimetric analysis photoelectron spectroscopy. Newly designed nanocomposite possess porous network structures, high specific surface area nitrogen content dopant acts as an electrode-modification material selective sensitive electrochemical sensors the assay Cd2+ Pb2+ square wave anodic stripping voltammetry (SWASV). Under optimized conditions, modified glassy electrodes (GCEs) exhibited excellent electroanalytical performance simultaneous detection Pb2+, wide linear response ranges 1–120 μg L−1, ultralow limits 0.02 0.03 μg L−1 (S/N = 3) observed, respectively. Moreover, repeatability, reproducibility stability, reliable assays in tap water samples realized constructed sensors. Therefore, this study provides metal nitrogen-doped carbon-based frameworks materials, which could be utility constructing convenient rapid toxic ions.
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