Uniform and Homogeneous Growth of Copper Nanoparticles on Electrophoretically Deposited Carbon Nanotubes Electrode for Nonenzymatic Glucose Sensor

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• 作者：Syeda Ammara ; Shahzadi Shamaila…
• 关键词：Electrophoretic deposition (EPD) ; Fluorine ; doped tin oxide (FTO) substrate ; Carbon nanotubes ; Copper nanoparticles ; Nonenzymatic electrocatalysis ; Glucose sensor
• 刊名：Acta Metallurgica Sinica (English Letters)
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：29
• 期：10
• 页码：889-894
• 全文大小：995 KB
• 刊物主题：Metallic Materials; Spectroscopy/Spectrometry; Organometallic Chemistry; Tribology, Corrosion and Coatings; Nanotechnology; Characterization and Evaluation of Materials;
• 出版者：Springer Berlin Heidelberg
• ISSN：2194-1289
• 卷排序：29

文摘

The multiwalled carbon nanotubes thin-film-based electrode was fabricated by electrophoretic deposition and modified with copper (Cu) nanoparticles to fabricate Cu/CNTs nanocomposite sensor for nonenzymatic glucose detection. The expensive glassy carbon electrode was replaced by fluorine-doped tin oxide glass containing CNTs film to confine the Cu nanoparticles growth by electrodeposition through cyclic voltammetry (CV). The ultraviolet visible and X-ray diffraction analysis revealed the successful deposition of Cu nanoparticles on the CNTs-modified electrode. The atomic force microscopy images confirmed the morphology of electrodeposited Cu on CNTs film as uniformly dispersed particles. The electrocatalytic activity of electrode to the glucose oxidation was investigated in alkaline medium by CV and amperometric measurements. The fabricated sensor exhibited a fast response time of less than 5 s and the sensitivity of 314 μA mM−1 cm−2 with linear concentration range (0.02–3.0 mM) having detection limit 10.0 μM. Due to simple preparation of sensor, Cu/CNTs nanocomposite electrodes are a suitable candidate for reliable determination of glucose with good stability.