Electrodeposition of Platinum Nanoparticles on Polyaniline Modified Electrode and its Electrocatalytic Activity Towards the Oxidation of Methanol

Parsa, Ali; Mirshafieyan, Seyed Amir; Shakeri, Azadeh; Amanzadeh-Salout, Sara

doi:10.13005/ojc/320410

Cited by 10 publications

(5 citation statements)

References 28 publications

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“…The pair O 3 R 3 (0.77 V, 0.56 V) was due to oxidation of emeraldine base state to the oxidized pernigraniline state, and vice versa. The O 2 R 2 (0.54 V, 0.45 V) peaks were attributed to either presence of ortho-coupled polymers [86] or the oxidation of segments of PANI chain to benzoquinone and hydroquinone species, whose potentials are very close to one another and tend to disappear after several scans [87,88]. The oxidation peak at O 3 exhibited a broad oxidation wave compared to that of O 1 , which could signify that charge transfer was more difficult for the second oxidation step than the first [85].…”

Section: Electroanalysis Of Pani and Composite Materialsmentioning

confidence: 99%

Electroconductive Polyaniline–Ag-ZnO Green Nanocomposite Material

et al. 2022

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Metal-conducting polyaniline (PANI)-based nanocomposite materials have attracted attention in various applications due to their synergism of electrical, mechanical, and optical properties of the initial components. Herein, metal-PANI nanocomposites, including silver nanoparticle-polyaniline (AgNP-PANI), zinc oxide nanoparticle-polyaniline (ZnONP-PANI), and silver-zinc oxide nanoparticle-polyaniline (Ag–ZnONP-PANI), were prepared using the two processes. Nanocomposite-based electrode platforms were prepared by depositing AgNPs, ZnONPs, or Ag–ZnONPs on a PANI modified glass carbon electrode (GCE) in the presence of 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide/N-Hydroxysuccinimide (EDC/NHS, 1:2) as coupling agents. The incorporation of AgNPs, ZnONPs, and Ag–ZnONPs onto PANI was confirmed by UV-Vis spectrophotometry, which showed five absorbance bands at 216 nm, 412 nm, 464 nm, 550 nm, and 831 nm (i.e., transition of π-π*, π-polaron band transition, polaron-π* electronic transition, and AgNPs). The FTIR characteristic signatures of the nanocomposite materials exhibited stretching arising from C–H aromatic, C–O, and C–N stretching mode for benzenoid rings, and =C–H plane bending vibration formed during protonation. The CV voltammograms of the nanocomposite materials showed a quasi-reversible behavior with increased redox current response. Notably, AgNP–PANI–GCE electrode showed the highest conductivity, which was attributed the high conductivity of silver. The increase in peak currents exhibited by the composites shows that AgNPs and ZnONPs improve the electrical properties of PANI, and they could be potential candidates for electrochemical applications.

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Section: Electroanalysis Of Pani and Composite Materialsmentioning

confidence: 99%

Electroconductive Polyaniline–Ag-ZnO Green Nanocomposite Material

et al. 2022

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“…Pt is a promising metal that has been used in recent years for the oxidation of compounds and for electrochemistry studies. Pt nanoparticles (PtNPs) deposited PAni film coated electrode exhibited high electrocatalytic activity toward methanol oxidation at lower onset potential [20]. A highly sensitive hydrazine sensor based on Au and PtNPs decorated poly(taurine) film was developed [21].…”

Section: Introductionmentioning

confidence: 99%

Improved Sensing Performance of Amperometric Urea Biosensor by Using Platinum Nanoparticles

2021

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A novel Platinum nanoparticle (PtNPs) modified Poly(pyrrole‐co‐1‐(2‐Aminophenyl)pyrrole)/Urease film coated Au electrode was designed for amperometric detection of urea. PtNPs quantity, film density and pH were optimized and interference effect of some substances readily found in municipal wastewater and blood was investigated. The biosensor responded to urea with a measurement concentration range of 0.1 to 30 mM, a sensitivity of 31.8 μA mM−1 cm−2, a LOD of 7.58 μM, an accuracy of 104 % and a RSD% of only 0.82. It sensed the concentration of urea in the municipal sewage water with recovery of 97.6 % (n=3) and remained 78 % of its initial response at 28th day. Results confirmed that PtNPs with strong conductivity improved the electron transfer ability of the working electrode.

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“…Among the listed polymers, PANI is significantly important owing to its low cost, high conductivity, ease of synthesis, excellent electrical properties, good environmental stability and large variety of applications such as electrochromic devices, secondary batteries, catalysis, and corrosion protection coatings. 29−31 Metal nanoparticles dispersed conducting polymer modified electrodes were reported for oxidation of organic molecules such as methanol, benzyl alcohol, formic acid, formaldehyde and toluene . Palladium (Pd) nanoparticles were reported as efficient catalysts in the oxidation of small organic molecules .…”

Section: Introductionmentioning

confidence: 99%

“…29À 31 Metal nanoparticles dispersed conducting polymer modified electrodes were reported for oxidation of organic molecules such as methanol, benzyl alcohol, formic acid, formaldehyde and toluene. [32][33][34] Palladium (Pd) nanoparticles were reported as efficient catalysts in the oxidation of small organic molecules. [35,36] The metal nanoparticles dispersed conducting polymer coated electrodes have shown better catalytic activity towards oxidation when compared to nanoparticles coated electrodes.…”

Section: Introductionmentioning

confidence: 99%

TEMPO‐Mediated Aqueous Phase Electrooxidation of Pyridyl Methanol at Palladium‐Decorated PANI on Carbon Fiber Paper Electrode

et al. 2020

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Palladium nanoparticles decorated on polyaniline coated carbon fiber paper electrode (Pd‐PANI/CFP) was employed for TEMPO ((2,2,6,6‐tetramethylpiperidin‐1‐yl)oxyl) mediated electrocatalytic oxidation of pyridyl methanol to pyridyl carboxaldehyde using cyclic voltammetry in aqueous acidic media using a surfactant. The electrochemical properties of the modified electrodes were studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The physicochemical properties of the modified electrodes were studied using Scanning electron microscopy (SEM) with Energy dispersive X‐ray spectroscopy (EDS), Transmission electron microscopy (TEM), Optical profilometry, X‐ray diffraction (XRD) spectroscopy, Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Pd‐PANI/CFP electrode has exhibited enhanced electrocatalytic activity towards TEMPO mediated oxidation of pyridyl methanol owing to higher electrochemically active surface area of the modified electrode. CV studies suggested higher electrochemical activity for Pd‐PANI/CFP electrode when compared to PANI/CFP and bare CFP electrodes towards TEMPO mediated oxidation of pyridyl methanol.

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Electrodeposition of Platinum Nanoparticles on Polyaniline Modified Electrode and its Electrocatalytic Activity Towards the Oxidation of Methanol

Cited by 10 publications

References 28 publications

Electroconductive Polyaniline–Ag-ZnO Green Nanocomposite Material

Electroconductive Polyaniline–Ag-ZnO Green Nanocomposite Material

Improved Sensing Performance of Amperometric Urea Biosensor by Using Platinum Nanoparticles

TEMPO‐Mediated Aqueous Phase Electrooxidation of Pyridyl Methanol at Palladium‐Decorated PANI on Carbon Fiber Paper Electrode

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