TY - JOUR
T1 - Terephthalic acid capped iron oxide nanoparticles for sensitive electrochemical detection of heavy metal ions in water
AU - Deshmukh, Sujit
AU - Kandasamy, Ganeshlenin
AU - Upadhyay, Ravi Kant
AU - Bhattacharya, Gourav
AU - Banerjee, Debosmita
AU - Maity, Dipak
AU - Deshusses, Marc A.
AU - Roy, Susanta Sinha
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - This work describes a simple wet chemical synthesis of iron oxide (Fe3O4) nanoparticles (NPs) capped with terephthalic acid (TA) and their application for the individual detection of Hg(II), Pb(II) and Cd(II) ions as well as simultaneous and selective detection of Hg(II), Pb(II) and Cd(II) ions by electrochemical approach. Terephthalic acid capped Fe3O4 NPs were first characterized by cyclic voltammetry (CV) using redox couples Fe(CN)63 −/4 −, thereafter square wave anodic stripping voltammetry (SWASV) was utilized for the detection of Hg(II), Pb(II) and Cd(II) ions. Optimization of experimental parameters such as deposition time, deposition potential and pH value of the electrolyte towards electrochemical detection of target heavy metal ions was also carried out in SWASV method. Under optimized experimental conditions limit of detection (LOD) values for individual analysis of Hg(II), Pb(II) and Cd(II) ions were found to be 0.1, 0.05 μM and 0.01 μM respectively, whereas the LOD values for the simultaneous analysis of Hg(II), Pb(II) and Cd(II) ions were found to be 0.3 μM, 0.04 μM and 0.2 μM respectively.
AB - This work describes a simple wet chemical synthesis of iron oxide (Fe3O4) nanoparticles (NPs) capped with terephthalic acid (TA) and their application for the individual detection of Hg(II), Pb(II) and Cd(II) ions as well as simultaneous and selective detection of Hg(II), Pb(II) and Cd(II) ions by electrochemical approach. Terephthalic acid capped Fe3O4 NPs were first characterized by cyclic voltammetry (CV) using redox couples Fe(CN)63 −/4 −, thereafter square wave anodic stripping voltammetry (SWASV) was utilized for the detection of Hg(II), Pb(II) and Cd(II) ions. Optimization of experimental parameters such as deposition time, deposition potential and pH value of the electrolyte towards electrochemical detection of target heavy metal ions was also carried out in SWASV method. Under optimized experimental conditions limit of detection (LOD) values for individual analysis of Hg(II), Pb(II) and Cd(II) ions were found to be 0.1, 0.05 μM and 0.01 μM respectively, whereas the LOD values for the simultaneous analysis of Hg(II), Pb(II) and Cd(II) ions were found to be 0.3 μM, 0.04 μM and 0.2 μM respectively.
KW - Cyclic voltmmetry
KW - Heavy metal ions
KW - Limit of detection
KW - Square wave anodic stripping voltammetry
KW - Terephthalic acid
UR - http://www.scopus.com/inward/record.url?scp=85011915260&partnerID=8YFLogxK
U2 - 10.1016/j.jelechem.2017.01.064
DO - 10.1016/j.jelechem.2017.01.064
M3 - Article
AN - SCOPUS:85011915260
SN - 1572-6657
VL - 788
SP - 91
EP - 98
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
ER -