Study on the Miscibility of Polypyrrole and Polyaniline Polymer Blends

Tikish, Tekalign A.; Kumar, Ashok; Kim, Jung Yong

doi:10.1155/2018/3890637

“…45 The other two peaks at 32.7°and 36.3°indicate chain ordering in PPy macromolecules. 44 The three intense peaks at 16.1°, 21.6°, and 32.6°i n the presence of 2,6-pyridinedicarboxylic acid showed that XRD pattern recorded for phase composition. It can also be proved from the observation of different X-ray diffraction peaks between PPy and DCA in the structure that phase separation.…”

Section: Resultsmentioning

confidence: 94%

“…1b, pure PPy was exhibited a fringed micelles model of nanostructured polymers with low degree of crystallinity. 44 The sharp patterns at 16.2°, 18.2°, and 21.8°may be assigned to the spacing the ring planes in the PPy chains. 45 The other two peaks at 32.7°and 36.3°indicate chain ordering in PPy macromolecules.…”

Section: Resultsmentioning

confidence: 99%

The Synthesis of 2,6-Pyridinedicarboxylic Acid Modified Porous Polypyrrole Electrodes and Its Energy Storage Application

Arvas¹,

Yazar²,

Şahin³

2022

ECS J. Solid State Sci. Technol.

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The well-designed porous polypyrrole/dicarboxylic acid (PPy/DCA) (0.02) electrodes were successfully synthesized by hydrothermal method. In this study, the interesting structural properties of the synthesized electrodes were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TG-DTA), Brunauer–Emmett–Teller (BET) and scanning electron microscopy (SEM). The scanning electron microscopy results showed that a large number of random pores were formed on the electrode surface during the polymerization of pyrrole. The galvanostatic charge-discharge measurements exhibited a specific capacity of 854.2 F.g−1 at 2.7 A.g−1 with an energy density of 884.4 Wh.kg−1. Further, the supercapacitor electrode showed a good cycling test (87.3%) after 4000 cycles at a current density of 10.0 A.g−1 and wide operating voltage (3.0 V). Our studies suggest that 2,6-pyridinedicarboxylic acid doped-polypyrrole electrodes with interesting structure and easy synthesized method are promising candidates for high-performance supercapacitor devices.

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Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO₂

Cheng,

Chen,

Xie

et al. 2023

Angewandte Chemie

0

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Hybrid organic/inorganic composites with the organic phase tailored to modulatelocal chemical environment at the Cu surface arise as an enchanting category of catalysts for electrocatalytic CO2 reduction reaction (CO2RR). A fundamental understanding on how the organics of different functionality, polarity, and hydrophobicity affect the reaction path is, however, still lacking to guide rational catalyst design. Herein, polypyrrole (PPy) and polyaniline (PANI) manifesting different Brønsted basicity are compared for their regulatory roles on the CO2RR pathways regarding *CO coverage, proton source and interfacial polarity. Concerted efforts from in situ IR, Raman and operando modelling unveil that at the PPy/Cu interface with limited *CO coverage, hydridic *H produced by the Volmer step favors the carbon hydrogenation of *CO to form *CHO through a Tafel process; Whereas at the PANI/Cu interface with concentrated CO2 and high *CO coverage, protonic H+ shuttled through the benzenoid −NH− protonates the oxygen of *CO, yielding *COH for asymmetric coupling with nearby *CO to form *OCCOH under favored energetics. As a result of the tailored chemical environment, the restructured PANI/Cu composite demonstrates a high partial current density of 0.41 A cm‐2 at a maximal Faraday efficiency of 67.5% for ethylene production, ranking among states of the art.

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Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO₂

Cheng,

Chen,

Xie

et al. 2023

View full text Add to dashboard Cite

Hybrid organic/inorganic composites with the organic phase tailored to modulatelocal chemical environment at the Cu surface arise as an enchanting category of catalysts for electrocatalytic CO2 reduction reaction (CO2RR). A fundamental understanding on how the organics of different functionality, polarity, and hydrophobicity affect the reaction path is, however, still lacking to guide rational catalyst design. Herein, polypyrrole (PPy) and polyaniline (PANI) manifesting different Brønsted basicity are compared for their regulatory roles on the CO2RR pathways regarding *CO coverage, proton source and interfacial polarity. Concerted efforts from in situ IR, Raman and operando modelling unveil that at the PPy/Cu interface with limited *CO coverage, hydridic *H produced by the Volmer step favors the carbon hydrogenation of *CO to form *CHO through a Tafel process; Whereas at the PANI/Cu interface with concentrated CO2 and high *CO coverage, protonic H+ shuttled through the benzenoid −NH− protonates the oxygen of *CO, yielding *COH for asymmetric coupling with nearby *CO to form *OCCOH under favored energetics. As a result of the tailored chemical environment, the restructured PANI/Cu composite demonstrates a high partial current density of 0.41 A cm‐2 at a maximal Faraday efficiency of 67.5% for ethylene production, ranking among states of the art.

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Study on the Miscibility of Polypyrrole and Polyaniline Polymer Blends

Cited by 14 publications

References 20 publications

The Synthesis of 2,6-Pyridinedicarboxylic Acid Modified Porous Polypyrrole Electrodes and Its Energy Storage Application

The Synthesis of 2,6-Pyridinedicarboxylic Acid Modified Porous Polypyrrole Electrodes and Its Energy Storage Application

Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO₂

Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO₂

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Study on the Miscibility of Polypyrrole and Polyaniline Polymer Blends

Cited by 14 publications

References 20 publications

The Synthesis of 2,6-Pyridinedicarboxylic Acid Modified Porous Polypyrrole Electrodes and Its Energy Storage Application

The Synthesis of 2,6-Pyridinedicarboxylic Acid Modified Porous Polypyrrole Electrodes and Its Energy Storage Application

Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO2

Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO2

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Product

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About

Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO₂

Proton Shuttling by Polyaniline of High Brønsted Basicity for Improved Electrocatalytic Ethylene Production from CO₂