Preparation and characterization of polyaniline/manganese dioxide composites via oxidative polymerization: Effect of acids

Gemeay, Ali H.; Mansour, Ikhlas A.; El-Sharkawy, Rehab G.; Zaki, Ahmed B.

doi:10.1016/j.eurpolymj.2005.05.030

Cited by 121 publications

(55 citation statements)

References 36 publications

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“…The second step ranging from 240 to 350 °C should be due to the elimination of acid dopant (H 2 SO 4 ). The temperature is higher than that reported in polyaniline/MnO 2 composites (130-360 °C) [17]. This indicates that the dopant of sulfonated polyaniline and sulfonated polyaniline/vanadate composite is more stable, which is important for electrochemical activity.…”

Section: Characterization Of Sulfonated Polyaniline/vanadate Compositementioning

confidence: 66%

Sulfonated polyaniline/vanadate composite as anode material and its electrochemical property in microbial fuel cells on ocean floor

Zhao

Liu

et al. 2011

Sci. China Chem.

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A unique sulfonated polyaniline/vanadate composite was synthesized and utilized as a composite anode in microbial fuel cells on ocean floor (BMFCs). X-ray diffraction (XRD) and thermogravimetric analysis (TGA) were employed to characterize its chemical composition and morphology. Wettability of the composite anodes decreases due to the addition of polytetrafluoroethylene (PTFE). The electrochemical behavior of the composite anodes was investigated by means of linear sweep voltammetry and Tafel plot measurements. Compared with the plain graphite anode, the composite anode significantly improves the power density, 5.5-fold higher, reaching 187.1 mW/m 2 and gives a 27-fold higher exchange current density and a higher kinetic activity. A novel synergistic mechanism between sulfonated polyaniline and vanadate is proposed to explain the excellent electrochemical performance. This composite thus has great potential to be used as an anode material for a high-power BMFC. sulfonated polyaniline/vanadate composite, anode material, microbial fuel cells on ocean floor, power density, electrochemical property

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Section: Characterization Of Sulfonated Polyaniline/vanadate Compositementioning

confidence: 66%

Sulfonated polyaniline/vanadate composite as anode material and its electrochemical property in microbial fuel cells on ocean floor

Zhao

Liu

et al. 2011

Sci. China Chem.

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“…The Pmc particles were present not only in the composite particle surfaces but were also distributed through their interior, a situation quite similar to that reported elsewhere. 35 …”

Section: Resultsmentioning

confidence: 97%

Composites of poly(2‐chloroaniline) and poly(o‐toluidine) with pumice and their application in the removal of chromium(VI) ions from aqueous solutions

Gök

Göde

2007

J of Applied Polymer Sci

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Poly(2-chloroaniline) (P2ClAn)/pumice (Pmc) and poly(o-toluidine) (POT)/Pmc composites were synthesized via the chemical oxidative polymerization of 2-chloroaniline and o-toluidine in the presence of a dispersion of Pmc powders in water solvent with an (NH 4 ) 2 S 2 O 8 oxidant. The composites were characterized with Fourier transform infrared (FTIR) spectroscopy, thermo-gravimetric/differential thermal analysis (TG-DTA), and scanning electron microscopy devices. The presence of P2ClAn and POT in the structure of the composites was confirmed by FTIR. The results of analysis show strong interactions between the homopolymers and Pmc. The applicability of the P2ClAn/ Pmc and POT/Pmc composites were investigated for the removal of Cr(VI) ions in water. Batch adsorption experiments were carried out as a function of pH, initial concentration, time, adsorbent dosage, and temperature. The batch sorption kinetics were tested, and the applicability of the Langmuir and Freundlich adsorption isotherms for this system was tested at 20 6 18C. An initial pH of 3.0 was most favorable for Cr(VI) removal by all adsorbents. The adsorption capacities obtained were 0.187 and 4.959 mmol/g of adsorbent for POT/Pmc and P2ClAn/Pmc from the Freundlich and Langmuir adsorption isotherms, respectively.

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“…This can be done by three different routes [36]. The first route consists of direct solid-state mixing between the inorganic particles and the polyaniline macromolecules.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of polyaniline/NiCo2O4 nanocomposites with enhanced electrochemical properties for supercapacitors

Chen

Zhang

et al. 2015

Ionics

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A b s t r a c t P o l y a n i l i n e / N i C o 2 O 4 nan oco mpos ites (PANI/NiCo 2 O 4 ) with different amounts of NiCo 2 O 4 (5, 8, 10, 15, and 20 wt%) were prepared via in situ chemical oxidation polymerization in the presence of the NiCo 2 O 4 particles, while the NiCo 2 O 4 nanoparticles were synthesized by a modified sol-gel method. The structure and morphology of PANI/NiCo 2 O 4 nanocomposites were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques, respectively. The electrochemical properties of PANI/NiCo 2 O 4 nanocomposites were investigated by cyclic voltammetry, galvanostatic charge-discharge test, and electrochemical impedance spectroscopy (EIS) in 0.5 mol L −1 H 2 SO 4 electrolyte in three-electrode system. The PANI/10 wt% NiCo 2 O 4 nanocomposites show larger specific capacitance of 439.4 F g −1 at a current density of 5 mA cm −2 and lower resistance compared with the pure PANI. The charge-discharge tests showed that the PANI/NiCo 2 O 4 nanocomposites possessed good cycling stability. It maintained about 66.11 % of the initial capacitance after 1000 cycles at a current density of 5 mA cm −2 . The results indicated that the PANI/NiCo 2 O 4 nanocomposites are a promising material for supercapacitors.

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Preparation and characterization of polyaniline/manganese dioxide composites via oxidative polymerization: Effect of acids

Cited by 121 publications

References 36 publications

Sulfonated polyaniline/vanadate composite as anode material and its electrochemical property in microbial fuel cells on ocean floor

Sulfonated polyaniline/vanadate composite as anode material and its electrochemical property in microbial fuel cells on ocean floor

Composites of poly(2‐chloroaniline) and poly(o‐toluidine) with pumice and their application in the removal of chromium(VI) ions from aqueous solutions

Facile synthesis of polyaniline/NiCo2O4 nanocomposites with enhanced electrochemical properties for supercapacitors

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