Synthesis and dielectric properties of polyaniline/titanium dioxide nanocomposites

Mo, Te Cheng; Wang, Hong Wen; Chen, San‐Yuan; Yeh, Yu-Ching

doi:10.1016/j.ceramint.2007.06.002

Cited by 99 publications

(31 citation statements)

References 25 publications

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“…TiO 2 NPs could act as a template during polymerization of PANI causing the development of better oriented defect-free conducting polymer [40,41]. Consequently, formation of more efficient network for charge transport in PANI matrix resulting in higher conductivity can be expected [42]. Such an assumption is in agreement with SEM analysis (Fig.…”

Section: Ac Conductivity and Dielectric Propertiesmentioning

confidence: 58%

Influence of TiO2 nanoparticles on formation mechanism of PANI/TiO2 nanocomposite coating on PET fabric and its structural and electrical properties

Radoičić

Milošević

Miličević

et al. 2015

Surface and Coatings Technology

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Section: Ac Conductivity and Dielectric Propertiesmentioning

confidence: 58%

Influence of TiO2 nanoparticles on formation mechanism of PANI/TiO2 nanocomposite coating on PET fabric and its structural and electrical properties

Radoičić

Milošević

Miličević

et al. 2015

Surface and Coatings Technology

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“…It has been reported that dielectric constants of PANi are larger than about 10,000. [20] Therefore, when the PANi powder particles is surrounded by epoxy matrix, they contribute as a component with abundant polar units to increase dielectric constant of PANi-epoxy system. Due to low dielectric constant of Stöber silica (about 3.9-4.5) [21] the dielectric constant of PANi/SiO2 nanocomposites decreases with increasing of SiO2 contents, compared to that of PANi.…”

Section: Morphology Mechanical and Electrical Properties Of The Panimentioning

confidence: 99%

Preparation and characterization of waterborne epoxy coatings containing conductive PANi/silica nanoparticles

Dương

Thuy

Tham

et al. 2020

Vietnam Journal of Chemistry

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This work reports on the mechanical and dielectric properties of waterborne epoxy coatings containing polyaniline/silica nanocomposites (PANi/SiO2). The nanocomposites with different PANi/SiO2 ratios were synthesized by in-situ chemical oxidative polymerization method. The morphology and electric properties of PANi/SiO2 were examined by field emission scanning electron microscopy (FESEM) and standard four-probe electrode method. It was shown that the silica nanoparticles were grafted by PANi and it conducted a decrease of electrical conductivity of PANi/SiO2 composites, compared to pure PANi. The epoxy coatings containing PANi/SiO2 presented lower dielectric properties than that containing pure PANi. In contrast, the PANi/SiO2 could maintain the breakdown voltage (from 16.6 to 19.1 kV/mm) and enhance impact resistance of conducting epoxy system up to 100 kg.cm. The results revealed that the PANi/SiO2 nanocomposite can be used in electrical coating application with good dielectric strength and mechanical properties.

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“…Therefore, the polymorph of TiO 2 in the PAni-TiO 2 nanocomposite is still in the anatase form. This is because when the deposited polyaniline is absorbed onto the surface of the nano-TiO 2 particle, the molecular chain of absorbed polyaniline is tethered and the degree of crystallinity decreases [34,35].…”

Section: Characterizations Of Pani-tio 2 Nanocompositementioning

confidence: 99%

Photocatalytic degradation of 1,2-dichloroethane using immobilized PAni-TiO2 nanocomposite in a pilot-scale packed bed reactor

Mohsenzadeh¹,

Mirbagheri²,

Sabbaghi³

2019

Desalination and Water Treatment

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a b s t r a c t1,2-Dichloroethane is one of the most important chlorinated volatile organic pollutants in wastewaters and has been listed as a priority pollutant by several regulatory organizations worldwide including United States Environmental Protection Agency (EPA). It is widely used as a precursor of the petrochemical industry to produce vinyl chloride monomer for the production of poly vinyl chloride (PVC). In this study, PAni-TiO 2 nanocomposite was synthesized by in-situ deposition oxidative polymerization method and its performance for photocatalytic degradation of synthetic 1,2-dichloroethane wastewater was investigated. A new pilot-scale packed-bed continuous photocatalytic reactor was designed and constructed. Glass beads were selected as the packing material. Immobilization was carried out using a modified dip coating and heat attachment method. The characteristics of synthesized PAni-TiO 2 nanoparticles were confirmed using FTIR, XRD, PSA, SEM and EDS techniques. Response surface methodology (RSM) based on central composite design (CCD) was used for Design of experiments. Design Expert software optimized 70.59% degradation of 1,2-dichloroethane with catalyst composition [TiO2: PAni] at [2.33:1] and catalyst loading at 0.39 mg/cm 2 , respectively. In this study (1) PAni-TiO 2 nanocomposite was successfully immobilized on glass beads, (2) 1,2-dichloroethane was successfully degraded using synthesized PAni-TiO 2 nanocomposite under visible light irradiation and (3) the designed and constructed photocatalytic reactor performed well for conducting photocatalytic degradation of 1,2-dichloroethane experiments and (4) for experimental conditions of this work, PAni-TiO 2 nanocomposite was more effective than pristine TiO 2 under visible light irradiation.

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Synthesis and dielectric properties of polyaniline/titanium dioxide nanocomposites

Cited by 99 publications

References 25 publications

Influence of TiO2 nanoparticles on formation mechanism of PANI/TiO2 nanocomposite coating on PET fabric and its structural and electrical properties

Influence of TiO2 nanoparticles on formation mechanism of PANI/TiO2 nanocomposite coating on PET fabric and its structural and electrical properties

Preparation and characterization of waterborne epoxy coatings containing conductive PANi/silica nanoparticles

Photocatalytic degradation of 1,2-dichloroethane using immobilized PAni-TiO2 nanocomposite in a pilot-scale packed bed reactor

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