Open AccessDetermination of Pb 2+ ions by square‐wave anodic stripping voltammetry using silver nanoparticles grown on indium tin oxide substrate
Author(s) -
Huang Rong Bin,
Zheng Yi Fan
Publication year - 2014
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2014.0224
Subject(s) - indium tin oxide , analytical chemistry (journal) , materials science , indium , substrate (aquarium) , nanoparticle , anodic stripping voltammetry , electrochemistry , scanning electron microscope , detection limit , stripping (fiber) , electrode , tin , silver nanoparticle , inorganic chemistry , chemistry , nanotechnology , thin film , optoelectronics , metallurgy , chromatography , oceanography , composite material , geology
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 Pb 2+ in the range of 0.1–8 µM. The linear regression equation was I = 0.129 + 0.368 C (unit of C is μM) and the correlation coefficient was 0.9993. The detection limit was 70 nM Pb 2+ ( 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 Pb 2+ .