Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
J Colloid Interface Sci. 2017 Jul 1;497:207-216. doi: 10.1016/j.jcis.2017.03.003. Epub 2017 Mar 3.
Nitrobenzene (NB) is widely used in the manufacturing of different types of products and other aromatic chemicals. Moreover, it is highly toxic and environmental pollutant compound. Therefore, the detection of nitro aromatic compounds (NACs) has gained more attention in the field of sensor. This article describes the green reduction utilized to preparation of green reduced graphene oxide/nickel tetraphenyl porphyrin (GRGO/Ni-TPP) nanocomposite modified electrode for the determination of nitrobenzene (NB). The GRGO was prepared by environmentally friendly method and using caffeic acid (CA) as a reducing agent. Moreover, the GRGO/Ni-TPP nanocomposite was prepared via the π-π stacking interaction between the RGO and Ni-TPP. In addition, the prepared material was confirmed by the UV-Visible spectroscopy (UV), nuclear magnetic resonance spectroscopy (NMR) and Fourier transform infrared spectroscopy (FTIR). The structural morphology and elemental composition of the prepared nanocomposite was confirmed by the scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX). Besides, the electrochemical studies of the prepared nanocomposite was characterized by the CV and DPV technique. The DPV studies displayed the linearity response of the proposed sensor about 0.5-878µM with the sensitivity of 1.277µAµMcm and the limit of detection (LOD) is 0.14µM. Furthermore, the GRGO/Ni-TPP nanocomposite modified electrode shows good selectivity towards the detection of NB. In addition, the real sample analysis exhibited appreciable recovery towards the determination of NB using various types of water samples.
硝基苯（NB）广泛用于制造各种类型的产品和其他芳香族化学品。此外，它是一种剧毒和环境污染化合物。因此，在传感器领域，对硝基芳香族化合物（NACs）的检测引起了更多的关注。本文描述了绿色还原法在绿色还原氧化石墨烯/镍四苯基卟啉（GRGO/Ni-TPP）纳米复合材料修饰电极制备中的应用，用于测定硝基苯（NB）。GRGO 是通过环保方法和使用咖啡酸（CA）作为还原剂制备的。此外，GRGO/Ni-TPP 纳米复合材料是通过 RGO 和 Ni-TPP 之间的π-π堆积相互作用制备的。此外，通过紫外可见光谱（UV）、核磁共振光谱（NMR）和傅里叶变换红外光谱（FTIR）确认了制备材料。通过扫描电子显微镜（SEM）和能谱（EDX）确认了制备纳米复合材料的结构形态和元素组成。此外，通过 CV 和 DPV 技术对制备纳米复合材料的电化学研究进行了表征。DPV 研究显示，该传感器对 0.5-878µM 范围内具有线性响应，灵敏度为 1.277µAµMcm，检测限（LOD）为 0.14µM。此外，GRGO/Ni-TPP 纳米复合材料修饰电极对 NB 的检测具有良好的选择性。此外，对各种水样进行实际样品分析，对 NB 的测定表现出令人满意的回收率。
