Facile chemical bath deposition method for interconnected nanofibrous polythiophene thin films and their use for highly efficient room temperature NO2 sensor application

Kamble, Deepak B.; Sharma, Ashok K.; Yadav, J.B.; Patil, V. B.; Devan, Rupesh S.; Jatratkar, Aviraj A.; Yewale, M.A.; Ganbavle, V.V.; Pawar, Subhash

doi:10.1016/j.snb.2017.01.021

Cited by 31 publications

(8 citation statements)

References 34 publications

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“…The gas response is increased with an increase in the NO 2 concentration and the response of the PTh films was 21, 47, 72, and 84% for the NO 2 concentration of 0.25, 0.5, 1, and 2 ppm, respectively. The gas sensors reported here exhibit highly sensitive behavior to NO 2 compared to PTh based sensors reported previously, as shown in Table 5 [33][34][35]. To examine the repeatability of the sensor based on I 2 -doped PTh films, the NO 2 -sensing measurement was repeated, as shown in Figure S4 in the Supplementary Material.…”

Section: Samplementioning

confidence: 99%

Ultrafast Room Temperature Synthesis of Porous Polythiophene via Atmospheric Pressure Plasma Polymerization Technique and Its Application to NO2 Gas Sensors

et al. 2021

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New nanostructured conducting porous polythiophene (PTh) films are directly deposited on substrates at room temperature (RT) by novel atmospheric pressure plasma jets (APPJs) polymerization technique. The proposed plasma polymerization synthesis technique can grow the PTh films with a very fast deposition rate of about 7.0 μm·min−1 by improving the sufficient nucleation and fragment of the thiophene monomer. This study also compares pure and iodine (I2)-doped PTh films to demonstrate the effects of I2 doping. To check the feasibility as a sensing material, NO2-sensing properties of the I2-doped PTh films-based gas sensors are also investigated. As a result, the proposed APPJs device can produce the high density, porous and ultra-fast polymer films, and polymers-based gas sensors have high sensitivity to NO2 at RT. Our approach enabled a series of processes from synthesis of sensing materials to fabrication of gas sensors to be carried out simultaneously.

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Section: Samplementioning

confidence: 99%

Ultrafast Room Temperature Synthesis of Porous Polythiophene via Atmospheric Pressure Plasma Polymerization Technique and Its Application to NO2 Gas Sensors

et al. 2021

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“…Their responses do not vary a lot and are typically in the range of 1 to 1.95, in spite of different gases tested. These sensors are made up of various structures including film, 25,99,100,105,106,108 thin film, 101,103,107 and pellet. 104 At low concentration of NO 2 (10 ppm), a PTh film showed a considerably high response of 7.52 at room temperature as compared to the majority of sensors.…”

Section: Polypyrrole (Ppy)mentioning

confidence: 99%

“…Both response times from the mentioned studies did not vary much but their recovery times showed a significant variation despite same carrier gas (air) was used. 101,103 Specifically, the interconnected nanofibrous PTh (INPTh) thin film achieved a response time of about 80 s and recovery time of about 8000 s toward 100 ppm of NO 2 . 103 On the other hand, the PTh thin film sensor exhibited a slightly slower response time of 220 s but faster recovery time of 1603 s in response to 100 ppm of NO 2 than the interconnected nanofibrous PTh (INPTh) thin film.…”

Section: Response and Recovery Timementioning

confidence: 99%

Review—Conducting Polymers as Chemiresistive Gas Sensing Materials: A Review

Wong

Ang

Haseeb

et al. 2019

J. Electrochem. Soc.

219

151

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Detection of harmful gases is important to ensure human and environmental health. Industrial waste gases such as CO, NO 2 , H 2 S, and NH 3 are of typical focus among researchers over the years. Chemiresistive sensors are suitable for detecting these harmful gases. One suitable candidate material for this sensor is the conducting polymer, which offers the advantage of room-temperature operation. This review focuses on the overall development of conducting polymer as chemiresistive sensing materials. Effects of different parameters influencing sensor performance such as response, gas concentration, response time, and recovery time of conducting polymers are explored. Different conducting polymers are compared and their affinities to specific gases are determined. An understanding of pure conducting polymers assists further exploration of these polymers in composite form. A comprehensive understanding based on an overview of literature will facilitate researchers in selecting appropriate conducting polymers for different gas sensing applications and is expected to encourage further progress in this area.

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“…Different conjugated polymers such as polythiophene [ 2 , 3 ], polypyrrole (PPy) [ 4 , 5 ], poly(3,ethylenendioxythiophene) (PEDOT) [ 6 , 7 ], and polyaniline (PANI) [ 8 , 9 ], have been explored as engineering polymers (multifunctional materials). Among the CPs, PPy and PANI are considered favorable materials for multiple applications, such as capacitors, redox capacitors, lithium-ion batteries, super-condensers, filtering membranes, water treatment, and biosensors [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

CVD Conditions for MWCNTs Production and Their Effects on the Optical and Electrical Properties of PPy/MWCNTs, PANI/MWCNTs Nanocomposites by In Situ Electropolymerization

et al. 2021

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In this work, the optimal conditions of synthesizing and purifying carbon nanotubes (CNTs) from ferrocene were selected at the first stage, where decomposition time, argon fluxes, precursor amounts, decomposition temperature (at 1023 K and 1123 K), and purification process (HNO3 + H2SO4 or HCl + H2O2), were modulated through chemical vapor deposition (CVD) and compared to commercial CNTs. The processing temperature at 1123 K and the treatment with HCl + H2O2 were key parameters influencing the purity, crystallinity, stability, and optical/electrical properties of bamboo-like morphology CNTs. Selected multiwalled CNTs (MWCNTs), from 1 to 20 wt%, were electropolymerized through in-situ polarization with conductive polymers (CPs), poly(aniline) (PANI) and poly(pyrrole) (PPy), for obtaining composites. In terms of structural stability and electrical properties, MWCNTs obtained by CVD were found to be better than commercial ones for producing CPs composites. The CNTs addition in both polymeric matrixes was of 6.5 wt%. In both systems, crystallinity degree, related to the alignment of PC chains on MWCNTs surface, was improved. Electrical conductivity, in terms of the carrier density and mobility, was adequately enhanced with CVD CNTs, which were even better than the evaluated commercial CNTs. The findings of this study demonstrate that synergistic effects among the hydrogen bonds, stability, and conductivity are better in PANI/MWCNTs than in PPy/MWCNTs composites, which open a promissory route to prepare materials for different technological applications.

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Facile chemical bath deposition method for interconnected nanofibrous polythiophene thin films and their use for highly efficient room temperature NO2 sensor application

Cited by 31 publications

References 34 publications

Ultrafast Room Temperature Synthesis of Porous Polythiophene via Atmospheric Pressure Plasma Polymerization Technique and Its Application to NO2 Gas Sensors

Ultrafast Room Temperature Synthesis of Porous Polythiophene via Atmospheric Pressure Plasma Polymerization Technique and Its Application to NO2 Gas Sensors

Review—Conducting Polymers as Chemiresistive Gas Sensing Materials: A Review

CVD Conditions for MWCNTs Production and Their Effects on the Optical and Electrical Properties of PPy/MWCNTs, PANI/MWCNTs Nanocomposites by In Situ Electropolymerization

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