NDLI: In situ synthesis and properties of reduced graphene oxide/Bi nanocomposites: as an electroactive material for analysis of heavy metals.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Sahoo, P. K. Li, Dan Panigrahy, Bharati Sahoo, S. Satpati, A. K. Bahadur, D.
Description	Country affiliation: India Author Affiliation: Sahoo PK ( IITB-Monash Research Academy, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.)
Abstract	An in situ modified Hummers method (without the use of any surfactants) has been used for the deposition of bismuth (Bi) nanoparticles onto the surface of reduced graphene oxide (RGO) sheets. The as-synthesized nanocomposites were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, transmission electron microscopy (TEM), thermogravimetry (TG) and differential scanning calorimetry (DSC). The morphology of the RGO/Bi nanocomposites provides a better choice as an electrode material for detection of heavy metal ions due to its better functional properties over the Bi film electrode. Trace analysis of heavy metal ions like Cd(+2), Pb(+2), Cu(+2) and Zn(+2) in water is carried out by stripping voltammetric analysis using RGO/Bi nanocomposite as an electrode material. The sensitivity and detection limit of the electrode were quantitatively estimated from the analysis. The three sigma detection limits at different deposition potential for Cd(2+), Pb(2+), Zn(2+) and Cu(2+) were obtained as 2.8, 0.55, 17 and 26µgL(-1), respectively. Copper detection using Bi-film electrode was a major challenge, which has been resolved using the RGO/Bi nanocomposite electrode.
ISSN	09565663
Volume Number	43
e-ISSN	18734235
Journal	Biosensors and Bioelectronics
Language	English
Publisher	Elsevier
Publisher Date	2013-05-15
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bismuth Chemistry Conductometry Instrumentation Graphite Metals, Heavy Analysis Nanostructures Alloys Equipment Design Equipment Failure Analysis Ultrastructure Oxidation-reduction Oxides Journal Article Research Support, Non-u.s. Gov't Discipline Biotechnology
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry

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