Fabrication, nanostructure evaluation, 3D electrical transport and electrochemical capacitance of PEDOT–Ti(IV)-doped iron(III) oxide nanocomposite

Nandi, Debabrata; Ghosh, Arup; De, Anil K.; Sen, Pintu; Ghosh, Uday Chand

doi:10.1007/s10853-013-7760-4

Cited by 16 publications

(12 citation statements)

References 30 publications

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“…Blending two or more polymers allows improving the service properties of the polymeric materials [1][2][3][4]. Polymers or blends having nano-sized fillers exhibits markedly improved mechanical, thermal, and optical properties when compared to pure polymers or their traditional composites.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and investigation of the electrical and dielectric properties of Co3O4/(CMC+PVA) nanocomposite films

Sayed

El‐Gamal

2015

J Polym Res

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Cobalt oxide (Co 3 O 4 ) nanoparticles (NPs), with average crystallite size<61 nm, were prepared by a sol-gel method. Two allowed direct optical band gaps of 1.445 and 1.915 eV are found for Co 3 O 4 NPs. Sodium carboxymethyl cellulose (Na-CMC)/polyvinyl alcohol (PVA) blend was doped with Co 3 O 4 at different concentrations<1.0 wt.% to study the electrical and dielectric properties of these nanocomposite films. Scanning electron microscopy images revealed a good dispersion of Co 3 O 4 NPs on the surface of the CMC/PVA films. The current-voltage characteristics are of non-ohmic behavior. The dielectric permittivity (ε') was studied in the frequency and temperature range of 5.0 kHz-5.0 MHz and 308-408 K and was found to depend on the Co 3 O 4 content. The dielectric loss (ε^) also increases and shows wave-like behavior with increasing Co 3 O 4 ratio. Increasing Co 3 O 4 NPs content leads to the formation of more number of three-dimensional semiconducting connected networks inside CMC/PVA matrix, leading to increasing both DC and AC conductivities. The correlated barrier hopping (CBH) is the most suitable mechanism to explain the AC conduction behavior in the Co 3 O 4 / Na-CMC/ PVA nanocomposite films.

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Section: Introductionmentioning

confidence: 99%

Synthesis and investigation of the electrical and dielectric properties of Co3O4/(CMC+PVA) nanocomposite films

Sayed

El‐Gamal

2015

J Polym Res

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“…Some signicant structural changes took place owing to chemical reactions during conversion of GO to GR and NIPG. 12 All the characteristics PEDOT bands are observed in NIPG, demonstrating the existence of PEDOT in NIPG. 18 The peak intensity of composites decreases slightly with respect to GR due to the plausible penetration of reection in the electronic structure in graphene layers by the IMO supported PEDOT chain.…”

Section: Afm Studymentioning

confidence: 86%

“…4c) exhibit pronounced broad D and G bands at 1356 and 1586 cm À1 , respectively. 12 The bands at 1091, 1140 and 1204 cm À1 , originate from C-O-C bond stretching of ethylenedioxy (alkylenedioxy) group. The intensity ratio (r i ¼ I D : I G ) for GR (1.30) and NIPG (1.29) show increased value compared to GO (0.90), indicating the exfoliation of layers was initiated in the graphene oxide stage.…”

Section: Afm Studymentioning

confidence: 99%

“…Researchers have worked hard to fabricate PEDOT derivatives in quest of its diverse applications including satellite, 4 optoelectronic, 5 super capacitor, 6 antistatic coating, 7 photovoltaic, 8 organic light emitting device, 9 sensor 9 etc. 4 However, various PEDOT nanocomposites (PNCs) reinforced by nanomaterials, such as, Au nano, 10 VS 2 , 11 Fe 5 TiO 8 , 12 CNTs, 13 graphene oxide (GO), graphene (GR), 14,15 functionalized graphene 16 have offered a great deal of advantage due to their high electrical conductivity, easy processability and environmental stability. Combinations of diverse functional nanoparticles (NPs) of different size, shape and nature with host PEDOT germinate nanocomposites (NCs) of incredible properties which confer an impressive potential for applications.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, nanostructure evaluation and tunable anomalous 3D hopping transport of manganese ferrite encapsulated poly[3,4-(ethylenedioxy)thiophene] decorated graphene layer

Nandi

Maity

2015

RSC Adv.

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A straightforward novel synthetic approach of manganese ferrite encapsulated poly [3,4-(ethylenedioxy) thiophene] nanocomposite decorated on a graphene layer (NIPG) is engineered assisted by dodecyl benzene sulphonic acid as surfactant. NIPG is characterized by Raman, TG, SEM, EDX, AFM, TEM etc. The temperature-induced (50 to 300 K) I-V characteristics and conductivity are scrutinized for NIPG and the structure-property relationship for electrical transport is also demonstrated. Varying loading of manganese ferrite nanoparticle and graphene significantly improve the order of conductivity even in a low temperature regime due to development of charge carriers such as polaron, bipolaron etc. in the band structure. An anomalous 3D Mott variable range hopping mechanism provides a complete framework to comprehend transport in NIPG. 12 841 3553; Tel: +27 12 841 7845 † Electronic supplementary information (ESI) available. See

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“…Modifications of ICPs using functional nanofillers of various shape, size and nature result in remarkable chemical and physical properties. Various types of PEDOT composites using metals, organic materials, metal oxides, etc., have been tried to enrich the properties of PEDOT [13,14]. Nowadays, carbon nanofillers, such as graphene nanoplatelets [GNPs] and carbon nanotubes, are considered as promising fillers due to the strong interactions between the conjugated polymer and carbon nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Novel conducting poly(3,4-ethylenedioxythiophene) – Graphene nanocomposites with gigantic dielectric properties and narrow optical energy band gap

et al. 2020

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Novel nanocomposites, consisting of conducting poly(3,4-ethylenedioxythiophene) [PEDOT] and graphene nanoplatelets [GNPs], were successfully synthesized by in-situ chemical-oxidative polymerization of 3,4-ethylenedioxythiophene [EDOT] using ammonium peroxydisulfate as an oxidizing agent. The formation of PEDOT and its incorporation onto the surface of GNPs were confirmed by scanning electron microscopy, Fourier-transform infrared-spectroscopy, and X-ray diffraction. The optical energy band gap, E g opt , was determined by UV-Vis spectroscopy. Dielectric constant and loss as well as AC electrical conductivity, σ AC , were determined in the frequency range from 10 Hz to 8 MHz. The PEDOT-GNP nanocomposites were found to have extremely large dielectric constant, ε 0 , significantly high σ AC , and narrow E g opt values. In particular, PEDOT-GNP nanocomposite with 10 wt% GNP has a gigantic dielectric constant of the order of 9 � 10 5 at 1 kHz and a narrow optical energy band gap of 1.26 eV. The ε 0 values (10 8 to 10 5 in the frequency range from 10 Hz to 5 MHz) of PEDOT-10 wt% GNP are the highest among those reported in the literature for carbon based polymer nanocomposites. The massive quantity of micro-capacitors formed in the nanocomposites, prior to the creation of conductive networks, leads to the gigantic dielectric properties. The ε 0 and σ AC values of PEDOT-10 wt% GNP nanocomposite were about 90 and 400 times larger than those of pure PEDOT. Our method should be particularly promising in the development of new materials for high energy storage applications.

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Fabrication, nanostructure evaluation, 3D electrical transport and electrochemical capacitance of PEDOT–Ti(IV)-doped iron(III) oxide nanocomposite

Cited by 16 publications

References 30 publications

Synthesis and investigation of the electrical and dielectric properties of Co3O4/(CMC+PVA) nanocomposite films

Synthesis and investigation of the electrical and dielectric properties of Co3O4/(CMC+PVA) nanocomposite films

Synthesis, nanostructure evaluation and tunable anomalous 3D hopping transport of manganese ferrite encapsulated poly[3,4-(ethylenedioxy)thiophene] decorated graphene layer

Novel conducting poly(3,4-ethylenedioxythiophene) – Graphene nanocomposites with gigantic dielectric properties and narrow optical energy band gap

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