Determination of Pb2+ ions by square-wave anodic stripping voltammetry using silver nanoparticles grown on indium tin oxide substrate

作者：Bin Huang, Rong^*; Zheng, Yi Fan

来源：Micro & Nano Letters, 2014, 9(11): 766-769.

DOI：10.1049/mnl.2014.0224

• voltammetry (chemical analysis)
• scanning electron microscopy
• X-ray chemical analysis
• correlation methods
• indium compounds
• regression analysis
• electrodeposition
• X-ray diffraction
• nanoparticles
• silver
• lead
• lead ion determination
• square wave anodic stripping voltammetry
• silver nanoparticles
• indium tin oxide substrate
• face centred cubic phase
• energy dispersive X-ray analysis
• linear regression equation
• correlation coefficient
• electrochemical sensors
• Ag
• ITO
• Pb2+

Silver (Ag) nanoparticles with a pure face-centred cubic phase were grown on indium tin oxide (ITO) substrate via the electrodeposition method. The products were characterised by scanning electron microscopy, energy-dispersive X-ray analysis and X-ray diffraction. Ag nanoparticles deposited on the ITO substrate were first used as an electrode for the electrochemical analysis of lead ions. A linear response was observed for Pb2+ in the range of 0.1-8 mu M. The linear regression equation was I = 0.129 + 0.368C (unit of C is M) and the correlation coefficient was 0.9993. The detection limit was 70 nM Pb2+ (S/N = 3). The results open new possibilities for the fabrication of novel electrodes for the construction of simple, low-cost and reliable electrochemical sensors for the quantification of trace levels of Pb2+.

• 出版日期2014-11
• 单位浙江工业大学