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论文类型：期刊论文

发表时间：2018-11-20

发表刊物：JOURNAL OF THE ELECTROCHEMICAL SOCIETY

收录刊物：SCIE

卷号：165

期号：14

页面范围：H1004-H1011

ISSN号：0013-4651

摘要：The present paper reports synthesis and development of nitrogen doped porous carbon nanoframeworks (N-CNFs) based electrochemical sensor for sensitive detection of tannic acid (TA) which is one of the potentially harmful organic pollutants. N-CNFs were prepared using zeolitic imidazolate frameworks (ZIF-8) as precursor and silica protected calcination strategy. The as prepared N-CNFs were characterized by different microscopic (scanning electron microscopy; SEM, transmission electron microscopy; TEM), spectroscopic (raman, X-ray diffraction; XRD, X-ray photoelectron spectroscopy; XPS, fourier transform infrared; FTIR), adsorption (Brunauer-Emmett-Teller; BET) and electrochemical impedance spectroscopic (EIS) methods. N-CNFs showed large surface area, nitrogen rich content, high conductivity and interconnecting porous channels which helped in achieving high electrochemical performances toward sensing applications. The present work discusses a simple methodology for detection of TA at N-CNFs modified glassy carbon electrode (GCE) using voltammetric techniques. The fabricated N-CNFs electrode showed high sensitivity, selectivity and reproducibility for TA detection with detection limit (LOD) and quantification limit as low as 0.86 mu g mL(-1) and 2.85 mu g mL(-1) respectively. The electrode exhibited a satisfied recovery between 90.31%-106.2% for detection of TA in polluted water. (C) 2018 The Electrochemical Society.