High-efficiency electrochemical degradation of phenol in aqueous solutions using Ni-PPy and Cu-PPy composite materials.

High-efficiency electrochemical degradation of phenol in aqueous solutions using Ni-PPy and Cu-PPy composite materials

Biosorption of heavy metals by microorganisms: Evaluation of different underlying mechanisms.

Amplified electrochemical sensor employing screen-printed electrode modified with Ni-ZIF-67 nanocomposite for high sensitive analysis of Sudan I in present bisphenol A.

A novel non-enzymatic glucose sensor based on NiFe(NPs)-polyaniline hybrid materials

Synthesis of novel PANI/PVA-NiCu composite material for efficient removal of organic dyes.

This work reports on the preparation of an electrode material based on polyaniline (PAni) thin film, with an average thickness of 100 nm, containing copper (Cu) microparticles dispersed on its surface. The prepared electrode material was employed as a sensor for glucose determination in alkaline medium. A two-step electrochemical process was used to synthesize the Cu–PAni composite films: First, PAni layer was deposited on indium tin oxide (ITO) substrate from an organic solution of the aniline under potensiostaic conditions. Secondly, Cu particles were electrodeposited on PAni/ITO surface from a separate aqueous solution by chronoamperometry technique. The morphology analysis of the Cu–PAni composites shows that the copper particles are visible like stars uniformly dispersed over the polymer surface. XRD patterns shows that the PAni film is amorphous whereas copper is polycrystalline. Examined by cyclic voltammetry and chronoamperometry techniques, the response to glucose of the Cu–PAni/ITO electrode shows good performance in 0.1 M NaOH solution.

Enzyme-Free Glucose Sensor Based on Star-Like Copper Particles-Polyaniline Composite Film

A two-step process was used to prepare a nickel-polyaniline nanocomposite (Ni (NPs)-PANI). The first step consisted of the electrodeposition of polyaniline (PANI) in the form of thin films on fluorine-doped tin oxide (FTO) substrates from a solution of aniline, lithium perchlorate, and sulfuric acid at a pH of 0.5. In the next step, the obtained Ni (NPs) were deposed in this polyaniline films. The structural, morphological, and electrocatalytic properties of the prepared nanocomposites were then investigated. X-ray diffraction (XRD) confirmed the cubic structure of the nanocomposites, and Fourier-transform infrared spectroscopy (FTIR) indicated the existence of nickel and polyaniline in the prepared nanocomposites. Morphological analysis carried out through SEM revealed that the nanocomposites exhibit uniform dispersion of nickel nanoparticles into the polyaniline matrix. Amperometry and cyclic voltammetry were employed to investigate the electrocatalytic glucose oxidation behavior of the nanocomposite electrode in the alkaline medium. The prepared nickel-polyaniline nanocomposite electrode exhibited high sensitivity (278.8 µA mM−1 cm−2) in a range from 0.02 to 1 mM at a sufficiently fast response time of 3 s and a low glucose detection limit of 1 µM (S/N = 3). A cost-effective and straightforward synthesis procedure to prepare Ni (NPs)-PANI nanocomposite would make this material an efficient glucose sensor with appropriate stability, higher reproducibility, and excellent sensitivity.

Delloula Lakhdari

Papers

High-efficiency electrochemical degradation of phenol in aqueous solutions using Ni-PPy and Cu-PPy composite materials.

A novel non-enzymatic glucose sensor based on NiFe(NPs)-polyaniline hybrid materials

Synthesis of novel PANI/PVA-NiCu composite material for efficient removal of organic dyes.

Enzyme-Free Glucose Sensor Based on Star-Like Copper Particles-Polyaniline Composite Film

Elaboration and Characterization of Ni (NPs)-PANI Hybrid Material by Electrodeposition for Non-Enzymatic Glucose Sensing