A novel electrochemical sensor based on zirconia/ordered macroporous polyaniline for ultrasensitive detection of pesticides

Abstract

A simple and mild strategy was proposed to develop a novel electrochemical sensor based on zirconia/ordered macroporous polyaniline (ZrO2/OMP) and further used for the detection of methyl parathion (MP), one of the organophosphate pesticides (OPPs). Due to the strong affinity of phosphate groups with ZrO2 and the advantages of OMP such as high catalytic activity and good conductivity, the developed sensor showed a limit of detection as low as 2.28 × 10(-10) mol L(-1) (S/N = 3) by square-wave voltammograms, and good selectivity, acceptable reproducibility and stability. Most importantly, this novel sensor was successfully applied to detect MP in real samples of apple and cabbage. It is expected that this method has potential applications in electrochemical sensing platforms with simple, sensitive, selective and fast analysis.

Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine

“…Hence, the interest in its use as a modifier because of the high surface area, good biocompatibility, chemical inertness, good conductivity, and affinity for oxygen-containing groups [1,20]. Its physicochemical properties have led to its recent use as an electrochemical sensor in the determination of pesticides [21]; in a composite with carbon nanotube-modified gold electrodes for the detection of nitrites [22]. Furthermore, zirconium oxide nanoparticles supported on graphene oxide have been used for the electrochemical determination of dopamine and paracetamol in the presence of ascorbic acid [19].…”

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

“…On the other hand, electroanalytical methods are simple, fast, low-cost, portable, and easy-to-use. Several electroanalytical sensors have been reported for MP sensing based on different chemical modifiers which includes, electrochemically reduced graphene oxide14, nanosilver/nafion composite1, zirconium oxide nanoparticles4, zirconia/ordered macroporous polyaniline15, molecularly imprinted polymer–ionic liquid–graphene composite16, Au nanoparticles/nafion17, ordered mesoporous carbon18, and carbon nanotubes–poly(acrylamide) nanocomposite19. In recent times, graphene is widely popular electrode materials in electroanalysis and numerous graphene based nanomaterials are enjoying widespread popularity in MP sensor5162021.…”

ZrO2 supported Nano-ZSM-5 nanocomposite material for the nanomolar electrochemical detection of metol and bisphenol A

“…The electrochemical behavior of different modified electrodes is also investigated using potassium ferricyanide as electrochemical probe by CV. The electroactive surface area of the different modified electrodes and bare GCE is calculated according to the Randles-Sevcik equation 37. The CVs of various electrodes exhibit a pair of redox peaks corresponding to Fe(CN(Fig.…”