Nano-TiO2 modified carbon paste sensor for electrochemical nicotine detection using anionic surfactant

A newly competitive electrochemical sensor for nicotine (NIC) detection was successfully achieved. Nano-TiO2 with a carbon paste electrode (CPE) were used for the sensor construction, where Nano-TiO2 was considered as one of the richest and highly variable class of materials. The sensor showed elect...

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Bibliographic Details
Published in:Biosensors & bioelectronics 2016-05, Vol.79, p.589-592
Main Authors: Shehata, M., Azab, S.M., Fekry, A.M., Ameer, M.A.
Format: Article
Language:English
Subjects:
Carbon
Carbon - chemistry
Cyclic voltammetry
Electrochemical impedance spectroscopy
Electrochemical Techniques - instrumentation
Electrodes
Humans
Nano-TiO2
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Nanostructure
Nicotine
Nicotine - analysis
Nicotine - urine
Pastes
Scanning electron microscope
Scanning electron microscopy
Sensors
Surface-Active Agents - chemistry
Titanium - chemistry
Tobacco Products - analysis
Voltammetry
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Summary:A newly competitive electrochemical sensor for nicotine (NIC) detection was successfully achieved. Nano-TiO2 with a carbon paste electrode (CPE) were used for the sensor construction, where Nano-TiO2 was considered as one of the richest and highly variable class of materials. The sensor showed electrocatalytic activity in both aqueous and micellar media toward the oxidation of NIC at Britton–Robinson (B–R) buffer solution (4×10−2M) of pH range (2.0–8.0) containing (1.0mM) sodium dodecylsulfate (SDS) using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. Scanning electron microscope (SEM) and Energy Dispersive X-Ray Analysis (EDX) techniques were also used. The linear range of detection for NIC using the new Nano-TiO2 Modified Carbon Paste sensor (NTMCP) was detected using diffrential pulse voltammetry (DPV) technique and it was found between 2×10−6M and 5.4×10−4M with a detection limit of 1.34×10−8M. The obtained results clarified the simplicity, high sensitivity and selectivity of the new NTMCPE for nicotine determination in real cigarettes and urine samples. •A newly competitive electrochemical modified sensor was done for nicotine determination.•TiO2-Nanoparticles Chemically deposited on a carbon paste electrode (CPE).•The detection limit is 1.34×10−8M.
ISSN:0956-5663
1873-4235
DOI:10.1016/j.bios.2015.12.090