Enhanced Electrocatalytic Performance for Methanol Oxidation via Insertion of Ruthenium Oxide Particles into Pt and Polyaniline-Poly(Acrylic Acid-co-Maleic Acid) Composite Electrode

In this study, a new type of magnetite nanocomposite with a core-shell structure was synthesized using Fe 3 O 4 nanoparticles as a core and polyaniline (PANI) as a shell. For this propose, the surface of Fe 3 O 4 was chemically modified with hexamethylenediisocyanate (HMDI) to improve its compatibility and interphase interaction with the polymeric matrix. Thereafter, the PANI was reacted with modified Fe 3 O 4 to anchor them to PANI by covalent bands which acted as a shell. In the second step, the poly (maleic acid-co-acrylic acid) (P(MAc-co-AA)) as polymeric dopant for the PANI was synthesized. Finally, the PANI anchored to Fe 3 O 4 was immersed in an aqueous solution of poly (maleic anhydride-co-acrylic acid) to form Fe 3 O 4 @PANI@P(MAc-co-AA) as a final composition of magnetite nanocomposite. The structural, morphological, thermal, magnetic, and electrochemical properties of the products were characterized by FTIR, H-NMR, UV-Vis, XRD, SEM, TEM, TGA, VSM, and CV analysis.

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Synthesis of Conductive Magnetite Nanocomposite based on Polyaniline/Poly(maleic acid‐co‐acrylic acid) with Core–Shell Structure

Khodadadi

Moghadam²,

Hashemi

2016

Adv Polym Technol

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Effects of Supporting Electrolytes on Spectroelectrochemical and Electrochromic Properties of Polyaniline‐poly(styrene sulfonic acid) and Poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid)‐based Electrochromic Device

Kuo

Chen

et al. 2014

J Chinese Chemical Soc

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Electrochromic devices are fabricated by using polyaniline (PANI) doped with poly(styrene sulfonic acid) (PSS) as coloring electrodes, poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid) (PEDOT‐PSS) as complementary electrodes, and hybrid polymer electrolytes as gel electrolytes. The device based on LiClO4‐based electrolyte (weight ratio of PMMA:PC:LiClO4 = 0.7:1.1:0.3) shows the highest optical contrast and coloration efficiency (333 cm2/C) after 1200 cycles in these devices, and the color changes from pale yellow (−0.5 V) to dark blue (+2.5 V). The spectroelectrochemical and electrochromic switching properties of electrochromic devices are investigated, the maximum optical contrast (ΔT%) of electrochromic device for ITO|PANI‐PSS‖PMMA‐PC‐LiClO4‐SiO2‖PEDOT‐PSS|ITO are 31.5% at 640 nm, and electrochromic device based on LiClO4‐based electrolyte with SiO2 shows faster response time than that based on LiClO4‐based electrolyte without SiO2.

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Nano‐composite Based on Platinum Particles and Modified Polyaniline for Methanol, Formic Acid, and Ethanol Oxidation

Kuo

Tsai

Chen

et al. 2014

J Chinese Chemical Soc

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Polyaniline (PANI) is doped with poly(styrenesulfonic acid) (PSS) via a doping‐dedoping‐redoping process. Fourier transform infrared (FT‐IR) spectroscopy results confirm that PANI is doped with PSS. X‐ray photoelectron spectroscopy (XPS) results indicate that the strong interaction between Pt particles and sulfonic acid groups of PANI‐PSS. Scanning electron microscopy (SEM) images reveal that PANI‐PSS is composed of highly porous nanowires. Platinum (Pt) can be deposited onto PANI‐PSS film using the potentiostatic mode to obtain PANI‐PSS‐Pt composite electrode. Transmission electron microscopy (TEM) image result indicates that Pt particles are dispersed uniformly into the electrode. The effects of concentration on electrocatalytic oxidation of ethanol, formic acid, and methanol are investigated. Cyclic voltammetry results and chronoamperometric response measurements show that the activity and stability toward methanol oxidation of the PANI‐PSS‐Pt electrode are better than those of the PANI‐PSS‐Pt electrodes toward ethanol and formic acid oxidation.

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Enhanced Electrocatalytic Performance for Methanol Oxidation via Insertion of Ruthenium Oxide Particles into Pt and Polyaniline-Poly(Acrylic Acid-co-Maleic Acid) Composite Electrode

Cited by 23 publications

References 62 publications

Synthesis of Conductive Magnetite Nanocomposite based on Polyaniline/Poly(maleic acid‐co‐acrylic acid) with Core–Shell Structure

Synthesis of Conductive Magnetite Nanocomposite based on Polyaniline/Poly(maleic acid‐co‐acrylic acid) with Core–Shell Structure

Effects of Supporting Electrolytes on Spectroelectrochemical and Electrochromic Properties of Polyaniline‐poly(styrene sulfonic acid) and Poly(ethylenedioxythiophene)‐poly(styrene sulfonic acid)‐based Electrochromic Device

Nano‐composite Based on Platinum Particles and Modified Polyaniline for Methanol, Formic Acid, and Ethanol Oxidation

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