Application of polypyrrole multi-walled carbon nanotube composite layer for detection of mercury, lead and iron ions using surface plasmon resonance technique

Polypyrrole multi-walled carbon nanotube composite layers were used to modify the gold layer to measure heavy metal ions using the surface plasmon resonance technique. The new sensor was fabricated to detect trace amounts of mercury (Hg), lead (Pb), and iron (Fe) ions. In the present research, the s...

Full description

Saved in:
Bibliographic Details
Published in:PloS one 2014-04, Vol.9 (4), p.e93962
Main Authors: Sadrolhosseini, Amir Reza, Noor, A S M, Bahrami, Afarin, Lim, H N, Talib, Zainal Abidin, Mahdi, Mohd Adzir
Format: Article
Language:English
Subjects:
Adsorption
Analysis
Biodiesel fuels
Biology and Life Sciences
Biomedical materials
Bonding strength
Carbon
Chemical bonds
Composite materials
Engineering
Engineering and Technology
Glucose
Gold
Handbooks
Heavy metals
Interfacial bonding
Ions
Iron
Iron - analysis
Lead
Lead - analysis
Mercury
Mercury (metal)
Mercury - analysis
Metals
Metals, Heavy - analysis
Microscopy, Atomic Force
Multi wall carbon nanotubes
Nanocomposites
Nanotechnology
Nanotubes
Nanotubes, Carbon - chemistry
Optical Phenomena
Optical properties
Photonics
Physical Sciences
Polymers
Polymers - chemistry
Polypyrroles
Publishing
Pyrrole
Pyrroles - chemistry
Refractometry
Resonance
Scientific imaging
Sensitivity
Sensitivity enhancement
Sensors
Solutions
Spectrophotometry, Atomic
Surface plasmon resonance
Surface Plasmon Resonance - methods
Thiophene
Water Pollutants, Chemical - analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polypyrrole multi-walled carbon nanotube composite layers were used to modify the gold layer to measure heavy metal ions using the surface plasmon resonance technique. The new sensor was fabricated to detect trace amounts of mercury (Hg), lead (Pb), and iron (Fe) ions. In the present research, the sensitivity of a polypyrrole multi-walled carbon nanotube composite layer and a polypyrrole layer were compared. The application of polypyrrole multi-walled carbon nanotubes enhanced the sensitivity and accuracy of the sensor for detecting ions in an aqueous solution due to the binding of mercury, lead, and iron ions to the sensing layer. The Hg ion bonded to the sensing layer more strongly than did the Pb and Fe ions. The limitation of the sensor was calculated to be about 0.1 ppm, which produced an angle shift in the region of 0.3° to 0.6°.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0093962