Ultrasonics Sonochemistry ( IF 8.7 ) Pub Date : 2018-02-07 , DOI: 10.1016/j.ultsonch.2018.02.016 Sathish Kumar Ponnaiah , Periakaruppan Prakash , Balakumar Vellaichamy
A novel N-CeO2 nanoparticles decorated on reduced graphene oxide (N-CeO2@rGO) composite has been synthesized by sonochemical method. The characterization of as prepared nanocomposite was intensely performed by UV-Vis, FT-IR, EDX, FE-SEM, HR-TEM, XRD, and TGA analysis. The synthesized nanomaterial was further investigated for its selective and sensitive sensing of paracetamol (PM) based on a N-CeO2@rGO modified glassy carbon electrode. A distinct and improved reversible redox peak of PM is obtained at N-CeO2@rGO nanocomposite compared to the electrodes modified with N-CeO2 and rGO. It displays a very good performance with a wide linear range of 0.05-0.600 μM, a very low detection limit of 0.0098 μM (S/N = 3), a high sensitivity of 268 μA µM-1 cm-2 and short response time (< 3s). Also, the fabricated sensor shows a good sensibleness for the detection of PM in various tablet samples.
中文翻译:
一种新的分析装置,结合了氮掺杂的镧金属氧化物和还原的氧化石墨烯片,用于对乙酰氨基酚感测
通过声化学方法合成了一种新型的以还原氧化石墨烯(N-CeO 2 @rGO)复合材料修饰的N-CeO 2纳米粒子。通过UV-Vis,FT-IR,EDX,FE-SEM,HR-TEM,XRD和TGA分析对所制备的纳米复合材料进行了严格的表征。基于N-CeO 2 @rGO修饰的玻碳电极,进一步研究了合成的纳米材料对对乙酰氨基酚(PM)的选择性和灵敏感。与用N-CeO 2修饰的电极相比,在N-CeO 2 @rGO纳米复合材料上获得了明显且改善的PM的可逆氧化还原峰。和rGO。它具有0.05-0.600μM的宽线性范围,0.0098μM(S / N = 3)的非常低的检测限,268μAµM -1 cm -2的高灵敏度和较短的响应时间,显示了非常好的性能。<3s)。而且,所制造的传感器对于检测各种片剂样品中的PM表现出良好的敏感性。