Self-assembled hierarchical graphene/polyaniline hybrid aerogels for electrochemical capacitive energy storage

Yang, Fan; Xu, Maowen; Bao, Shu‐Juan; Wei, Han‐Xun; Chai, Hui

doi:10.1016/j.electacta.2014.06.017

Cited by 91 publications

(51 citation statements)

References 31 publications

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“…The FT-IR spectra obtained in this study show agreement with the previously reported results (Ai et al, 2010;Ayad et al, 2013;Najim and Salim, 2014;Ren et al, 2014;Wang et al, 2014a;Yang et al, 2014). For the PANNPs, the characteristic bands of the benzenoid and quinoid units appeared at 1,490 and 1,573 cm PANNRs, nearly similar peaks were noticed with slight vibrations except for the peak at 1,143 cm −1 which was diminished.…”

Section: Resultssupporting

confidence: 91%

“…These superior properties of PANI have been utilized in many applications including fuel cells (Wang et al, 2014b), diodes (Liu et al, 2006) and supercapacitors (Zhang et al, 2011;Gao et al, 2014). Moreover, it can be used for energy storage (Yang et al, 2014), gas sensors (Mérian et al, 2010;Zhang et al, 2015), biomedical applications (Mazeiko et al, 2013;Stejskal et al, 2014), optical and electronic devices (Alam et al, 2013;Khairy and Gouda, 2015), and adsorption processes for either organic pollutants or dyes (Salem, 2010;Javadian, 2014;Wang et al, 2014a). Recently, PANI with different morphologies was synthesized (Pham et al, 2010;Ayad et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Adsorption Profiles of Acid Dye Using Synthesized Polyaniline Nanostructure with Different Morphologies

Noby

El-Shazly

Elkady

et al. 2017

J. Chem. Eng. Japan / JCEJ

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The e ect of CO 2 on the morphology of polyaniline (PANI) polymerized in the presence of compressed CO 2 was investigated. Two dissimilar morphologies, nanorods and nanoparticles, were successfully obtained using polymerization with and without compressed CO 2 . The obtained nanorods and particles were characterized by X-ray di raction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer, Emmett and Teller (BET) analysis, and scanning electron microscopy (SEM). FT-IR and XRD results showed the presence of polyaniline emeraldine salt form. The SEM images clearly showed PANI nanorods (PANNRs) and nanoparticles (PANNPs) in polymerized PANI. From SEM images, the average diameters of PANNPs and PANNRs were calculated to be 85 and 90 nm, respectively. BET analysis indicated the surface area of PANNRs to be 44% larger than that of the PANNPs. The adsorption performance of the prepared PANI was evaluated in a decolorization process of acid blue 25 dye (AB25). The PANNRs always showed better adsorption compared with PANNPs. The PANNRs recorded a higher decolorization rate, with 99.8% of the dye adsorbed within 8 min; whereas, PANNPs showed a rate of 99.38% decolorization in 16 min. The adsorption kinetics of both PANI were analyzed with both Freundlich and Langmuir models. As a result, the Langmuir isotherm model showed better agreement with the experimental data of the dye adsorption process than that of Freundlich model. Furthermore, it was found that the dye adsorption procedure onto the two fabricated PANI structures follows the pseudo-second-order model.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Adsorption Profiles of Acid Dye Using Synthesized Polyaniline Nanostructure with Different Morphologies

Noby

El-Shazly

Elkady

et al. 2017

J. Chem. Eng. Japan / JCEJ

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“…7a and 7b. The FT-IR spectra obtained in this study shows the conformity with the previously reported outcomes [11][12][13][14][15][16]. For all the PANNTs prepared, the characteristic Peaks of the benzenoid and quinoid units performed around 1514 and 1595 cm -1 which confirm the existence of the emeraldine salt form due to the approximately equal benzenoid and quinoid peaks intensity.…”

Section: Chemical Structuresupporting

confidence: 73%

Investigation of the Parameters affecting CO₂—assisted Polyaniline Polymerization

et al. 2016

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Abstract. Specific Polyaniline (PANI) morphologies such as nanotubes and nanofiber are required for enhancing its performance in the various applications. CO2 ‫ـــ‬assisted Polyaniline polymerization is a method recently used to produce these anticipated morphologies. In this study, polyaniline nanotube was prepared successfully in the presence of compressed CO2 utilizing Aniline as a monomer and Ammonium peroxydisulfate (APS) as an oxidizing agent. The effect of both reaction temperature and the oxidizing agent feed rate on the morphology and surface area of the produced PANI was investigated. The synthesized PANI was examined by FT-IR, XRD, and BET surface area analysis. Furthermore, SEM was carried out to figure out the morphology of the prepared PANI. It was indicated that Polyaniline nanotubes PANNTs size and homogeneity were affected by the reaction temperature. The averages of the outer and inner diameters of the PANNTs at 25 o C, 45 o C, 65 o C were found to be about (120, 60 nm), (140, 65 nm), and (175, 75 nm) respectively. Also, the produced surface area was slightly augmented with the increase of the temperature. In addition, it was observed that increasing the feeding rate of the APS was associated with the reduction of the size and the surface area of the produced PANI nanotubes.

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“…For the plain PANI (Fig. 3c), the major diffraction peaks at 2u = 14.9 , 19.4 and 25.4 are consistent with (0 11), (020) and (2 0 0) crystal planes, respectively [38][39]. However, the peaks of PANI completely disappear in the CNFs/MWCNTs/ PANI aerogel electrode (Fig.…”

Section: Characterization and Electrical Measurementsupporting

confidence: 68%

Flexible highly specific capacitance aerogel electrodes based on cellulose nanofibers, carbon nanotubes and polyaniline

Yang

Chen

Pan

et al. 2015

Electrochimica Acta

103

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Self-assembled hierarchical graphene/polyaniline hybrid aerogels for electrochemical capacitive energy storage

Cited by 91 publications

References 31 publications

Adsorption Profiles of Acid Dye Using Synthesized Polyaniline Nanostructure with Different Morphologies

Adsorption Profiles of Acid Dye Using Synthesized Polyaniline Nanostructure with Different Morphologies

Investigation of the Parameters affecting CO₂—assisted Polyaniline Polymerization

Flexible highly specific capacitance aerogel electrodes based on cellulose nanofibers, carbon nanotubes and polyaniline

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Self-assembled hierarchical graphene/polyaniline hybrid aerogels for electrochemical capacitive energy storage

Cited by 91 publications

References 31 publications

Adsorption Profiles of Acid Dye Using Synthesized Polyaniline Nanostructure with Different Morphologies

Adsorption Profiles of Acid Dye Using Synthesized Polyaniline Nanostructure with Different Morphologies

Investigation of the Parameters affecting CO2—assisted Polyaniline Polymerization

Flexible highly specific capacitance aerogel electrodes based on cellulose nanofibers, carbon nanotubes and polyaniline

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Investigation of the Parameters affecting CO₂—assisted Polyaniline Polymerization