A review on advances in application of polyaniline for ammonia detection

Tanguy, Nicolas R.; Thompson, Michael; Yan, Ning

doi:10.1016/j.snb.2017.11.008

Cited by 221 publications

(120 citation statements)

References 152 publications

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“…Conducting polymers, such as polyaniline (PANI), are widely studied due to their ease of preparation, good level of electrical conductivity, redox and ion-exchange properties, and environmental stability [1][2][3][4][5][6][7][8]. However, the understanding of the stability and the mechanism of degradation of polyaniline is of great importance for possible applications [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Writing in a Polyaniline Film with Laser Beam and Stability of the Record: A Raman Spectroscopy Study

Morávková

Bober

2018

International Journal of Polymer Science

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Lines were drawn on polyaniline (PANI) salt films with laser beam, and then the samples were left to age in air at room temperature. Both the irradiated and intact parts of the sample and their ageing were studied with Raman spectroscopy. It was found that the laser-written record is reasonably stable. The degradation of polyaniline by laser irradiation and ageing was compared to the changes in PANI during heating. In all cases, deprotonation and crosslinking of PANI chains proceed but the relative rates of the processes vary with degradation conditions. Materials and Methods2.1. Preparation of PANI Films. Polyaniline was prepared by the oxidation of 0.2 M aniline hydrochloride (Fluka, Switzerland) with 0.25 M ammonium peroxydisulfate (APS) (Lach-Ner, Czech Republic) in water [23] at room temperature. The films were deposited in situ on glass and goldcoated glass windows, 13 mm in diameter. A couple of films

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Section: Introductionmentioning

confidence: 99%

Writing in a Polyaniline Film with Laser Beam and Stability of the Record: A Raman Spectroscopy Study

Morávková

Bober

2018

International Journal of Polymer Science

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“…The sensing mechanism is based on the reversible doping/dedoping process of PAni. During the gas‐induced doping process, polarons are transferred from the PAni backbone to the NH 3 molecule, causing the carrier mobility to decrease and a conversion of PAni from emeraldine base (EB) form to its emeraldine salt (form) . Wang et al .…”

Section: Applications In Sensorsmentioning

confidence: 99%

“…During the gas-induced doping process, polarons are transferred from the PAni backbone to the NH 3 molecule, causing the carrier mobility to decrease and a conversion of PAni from emeraldine base (EB) form to its emeraldine salt (form). 126 Wang et al proposed a room-temperature NH 3 gas sensor based on CeO 2 @PAni hydrogel [ Fig. 10(a)].…”

Section: Gas Sensormentioning

confidence: 99%

Properties of conductive polymer hydrogels and their application in sensors

Guo

Pan

et al. 2019

J Polym Sci B Polym Phys

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Conductive polymer hydrogels (CPHs), which combine the unique advantages of hydrogels and organic conductors, have received wide attention due to their adjustable mechanical properties, biocompatibility, self‐healing, hydrophilicity, and ease of preparation. With doping engineering and incorporation with other functional nanomaterials, CPHs have exhibited excellent physical/chemical properties. CPHs have been widely used in various electronic devices, especially in the field of sensors due to its sensitivity to external stimuli. This review summarizes recent progress in CPHs from the aspect of the CPHs' properties and their application in advanced sensor technology. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 1606–1621

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“…Chemical oxidative polymerization (also known as electrochemical polymerization) in acid media is the most recommended process to increase the electrical conductivity [4,[8][9][10]. PANI can form π − π interactions; thereby, it has been combined with metal oxides and carbon-based materials (carbon nanotubes, fullerene, and graphene) to be used as electrode materials, gas sensors, or electronic nose, artificial muscles [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…The used strategy was to carry out in situ polymerization of aniline monomer and add different quantities of TERGO powders (10,20, and 30 wt%), which were in turn prepared by a two-way route, Hummer's method, and one step potential (−2 V) followed by annealing process at 400°C. The morphology and structure of the PANI/TERGO composites were characterized by Raman spectroscopy, ultraviolet-visible spectroscopy (UV-Vis), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM).…”

Section: Introductionmentioning

confidence: 99%

Functionality of TERGO Powders during the Synthesis of PANI-Based Composites for Electrical Devices

Domínguez‐Crespo

López‐Oyama

Torres‐Huerta

et al. 2019

Journal of Nanomaterials

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In this work, hybrid composites were prepared using polyaniline (PANI) and electrochemically reduced graphene oxide (ERGO) by in situ polymerization. ERGO powders were obtained by a two-way route, Hummer's method, and one-step potential (−2 V) followed by annealing process at 400°C (TERGO powders): different quantities of TERGO fine particles (10, 20, and 30 wt%) were added to the in situ PANI polymerization in order to produce the hybrid composites. The morphology and structure of the PANI/TERGO compounds were characterized by Raman spectroscopy, ultraviolet-visible spectroscopy (UV-Vis), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Thermal treatment of ERGO powders pointed out high-defect surfaces with a wrinkle-type morphology (I D /I G ratio~0.90). The emeraldine phase of PANI was obtained with a maximum value of 61%, which decreases with the amount of TERGO powders. It is also seen that composites displayed a combined morphology between PANI matrix and TERGO powders, confirming a physical interaction between both morphologies. The amount of TERGO particles into the polymeric matrix also modifies the sample microstructure from a semispherical shape to extend sheets, where PANI is sandwiched between TERGO layers. Electrical conductivity of composites slightly increases independent of the TERGO amount (30 S/m and 39 S/m) due to the rough TERGO surface that conditioned the homogeneous nucleation of a large amount of polymer (PANI) reducing the area to move the electrical charge.

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A review on advances in application of polyaniline for ammonia detection

Cited by 221 publications

References 152 publications

Writing in a Polyaniline Film with Laser Beam and Stability of the Record: A Raman Spectroscopy Study

Writing in a Polyaniline Film with Laser Beam and Stability of the Record: A Raman Spectroscopy Study

Properties of conductive polymer hydrogels and their application in sensors

Functionality of TERGO Powders during the Synthesis of PANI-Based Composites for Electrical Devices

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