A Disposable Amperometric Sensor Based on High-Performance PEDOT:PSS/Ionic Liquid Nanocomposite Thin Film-Modified Screen-Printed Electrode for the Analysis of Catechol in Natural Water Samples

A conducting polymer-based composite material of poly(3,4-ethylenedioxythiophene) (PEDOT): poly(4-styrenesulfonate) (PSS) doped with different percentages of a room temperature ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]), was prepared and a very small amount of the composite (2.0 µL) was drop-coated on the working area of a screen-printed carbon electrode (SPCE). The SPCE, modified with PEDOT:PSS/IL composite thin-film, was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), profilometry and sessile contact angle measurements. The prepared PEDOT:PSS/IL composite thin-film exhibited a nano-porous microstructure and was found to be highly stable and conductive with enhanced electrocatalytic properties towards catechol, a priority pollutant. The linear working range for catechol was found to be 0.1 µM–330.0 µM with a sensitivity of 18.2 mA·mM·cm−2 and a calculated limit of detection (based on 3× the baseline noise) of 23.7 µM. When the PEDOT:PSS/IL/SPCE sensor was used in conjunction with amperometry in stirred solution for the analysis of natural water samples, the precision values obtained on spiked samples (20.0 µM catechol added) (n = 3) were 0.18% and 0.32%, respectively, with recovery values that were well over 99.0%.

[1]  M. Rafiee,et al.  Investigation of the electro-oxidation and oxidation of catechol in the presence of sulfanilic acid , 2004 .

[2]  W. Lövenich,et al.  PEDOT: Principles and Applications of an Intrinsically Conductive Polymer , 2010 .

[3]  David K. Gosser,et al.  Cyclic Voltammetry: Simulation and Analysis of Reaction Mechanisms , 1993 .

[4]  P Nagaraja,et al.  A sensitive and selective spectrophotometric estimation of catechol derivatives in pharmaceutical preparations. , 2001, Talanta.

[5]  T. Noguer,et al.  Biosensor employing screen‐printed PEDOT:PSS for sensitive detection of phenolic compounds in water , 2012 .

[6]  Tom Welton,et al.  Room-temperature ionic liquids: solvents for synthesis and catalysis. 2. , 1999, Chemical reviews.

[7]  R. Pemberton,et al.  Development of a sandwich format, amperometric screen-printed uric acid biosensor for urine analysis. , 2012, Analytical biochemistry.

[8]  Adriana G Lista,et al.  Determination of phenol, resorcinol and hydroquinone in air samples by synchronous fluorescence using partial least-squares (PLS). , 2006, Talanta.

[9]  K. Asaka,et al.  High-Performance PEDOT:PSS/Single-Walled Carbon Nanotube/Ionic Liquid Actuators Combining Electrostatic Double-Layer and Faradaic Capacitors. , 2016, Langmuir : the ACS journal of surfaces and colloids.

[10]  H. Hiller.  In: Ullmann''''s Encyclopedia of Industrial Chemistry , 1989 .

[11]  T. Welton.  Room-Temperature Ionic Liquids. Solvents for Synthesis and Catalysis. , 1999, Chemical reviews.

[12]  X. Lin,et al.  Determination of some catechol derivatives by a flow injection electrochemiluminescent inhibition method. , 2000, Talanta.

[13]  Aicheng Chen,et al.  Electrochemical Sensor Based on Carbon Nanotubes for the Simultaneous Detection of Phenolic Pollutants , 2015 .

[14]  Xiliang Luo,et al.  Cost-effective preparation and sensing application of conducting polymer PEDOT/ionic liquid nanocomposite with excellent electrochemical properties , 2015 .

[15]  J. W. Frost,et al.  Environmentally compatible synthesis of catechol from D-glucose , 1995 .

[16]  E. Laviron.  General expression of the linear potential sweep voltammogram in the case of diffusionless electrochemical systems , 1979 .

[17]  S. Dehdashtian,et al.  Electrochemical oxidation of catechol in the presence of indole: a facile and one-pot method for the synthesis of trisindolyl-o-benzoquinone , 2008 .

[18]  R. Pemberton,et al.  Amperometric Screen-Printed Galactose Biosensor for Cell Toxicity Applications , 2016 .

[19]  R. Pemberton,et al.  Development of an amperometric screen-printed galactose biosensor for serum analysis. , 2013, Analytical biochemistry.

[20]  S. Srivastava,et al.  Structure-toxicity relationship of phenolic analogs as anti-melanoma agents: an enzyme directed prodrug approach. , 2010, Chemico-biological interactions.

[21]  S. Rawlinson,et al.  Simultaneous electrochemical determination of dopamine and 5-hydroxyindoleacetic acid in urine using a screen-printed graphite electrode modified with gold nanoparticles , 2016, Analytical and bioanalytical chemistry.

[22]  Marleen Kamperman,et al.  Jack of All Trades: Versatile Catechol Crosslinking Mechanisms , 2015 .

[23]  M. Shahinpoor.  Ionic polymer–conductor composites as biomimetic sensors, robotic actuators and artificial muscles—a review , 2003 .

[24]  S. Rawlinson,et al.  Gold nanoparticle modified screen-printed carbon arrays for the simultaneous electrochemical analysis of lead and copper in tap water , 2016, Microchimica Acta.

[25]  M. Rafiee,et al.  Kinetic Study of the Oxidation of Catechols in the Presence of N-Methylaniline , 2013 .

[26]  J. W. Frost,et al.  Conversion of D-Glucose into Catechol: The Not-So-Common Pathway of Aromatic Biosynthesis. , 1992 .

[27]  Chengzhong Yu,et al.  A voltammetric sensor based on graphene-modified electrode for simultaneous determination of catechol and hydroquinone , 2011 .

[28]  Y. Long,et al.  Simultaneous determination of dihydroxybenzene isomers using disposable screen-printed electrode modified by multiwalled carbon nanotubes and gold nanoparticles , 2010 .

[29]  E. Gileadi,et al.  Defining the transfer coefficient in electrochemistry: An assessment (IUPAC Technical Report) , 2014 .

[30]  C. Bala,et al.  Low potential thiocholine oxidation at carbon nanotube-ionic liquid gel sensor , 2010 .

[31]  Hua Zhang,et al.  Simultaneous detection of hydroquinone and catechol on electrochemical-activated glassy carbon electrode by simple anodic and cathodic polarization , 2017, Journal of Solid State Electrochemistry.

[32]  S. Rawlinson,et al.  Fabrication and electrochemical characterization of polydopamine redox polymer modified screen-printed carbon electrode for the detection of guanine , 2016 .

[33]  S. Rawlinson,et al.  A Voltammetric Sensor Based on Chemically Reduced Graphene Oxide-Modified Screen-Printed Carbon Electrode for the Simultaneous Analysis of Uric Acid, Ascorbic Acid and Dopamine , 2016 .

[34]  Chelladurai Karuppiah,et al.  Simultaneous and selective electrochemical determination of dihydroxybenzene isomers at a reduced graphene oxide and copper nanoparticles composite modified glassy carbon electrode , 2014 .

[35]  T. Rao,et al.  Ultrasensitive voltammetric determination of catechol at a gold atomic cluster/poly(3,4-ethylenedioxythiophene) nanocomposite electrode. , 2013, The Analyst.

[36]  Jie Du,et al.  A high-performance and simple method for rapid and simultaneous determination of dihydroxybenzene isomers. , 2012, The Analyst.

[37]  A. Morrin,et al.  Electrochemical Characterization of Commercial and Home-Made Screen-Printed Carbon Electrodes , 2003 .

[38]  Liping Guo,et al.  Electrochemical properties and simultaneous determination of dihydroxybenzene isomers at ordered mesoporous carbon-modified electrode , 2009 .

[39]  S. Rawlinson,et al.  A non-enzymatic sensor based on the redox of ferrocene carboxylic acid on ionic liquid film-modified screen-printed graphite electrode for the analysis of hydrogen peroxide residues in milk , 2016 .