Selective and sensitive chemiresistive sensors based on polyaniline/graphene oxide nanocomposite: A cost-effective approach

Mohammed, Hamed Y.; Farea, Maamon A.; Sayyad, Pasha W.; Ingle, Nikesh N.; Al‐Gahouari, Theeazen; Mahadik, Manasi M.; Bodkhe, Gajanan A.; Shirsat, Sumedh M.; Shirsat, Mahendra D.

doi:10.1016/j.jsamd.2021.08.004

Cited by 24 publications

(16 citation statements)

References 38 publications

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“…The broad bands between 500 and 700 nm might be assigned to the π–π* transitions of the thiophene ring. A free tail extending into the near-infrared region indicates the doped state of the PEDOT:PSS chains. , The PPA displays two characteristic absorption peaks, where a band at 285 nm and a broad absorption band between 470 and 580 nm appear, ascribed to the benzenoid π–π* transitions and quinoid rings, , respectively. The UV–vis spectra of the PEDOT:PSS/PPA nanocomposite exhibit the same absorption band at lower energy, inferring that the doping level of the nanocomposite is lower than that of homopolymers.…”

Section: Resultsmentioning

confidence: 99%

“…However, the height distribution ranges vary from one material to another, reflecting their surface area and surface roughness, as clearly indicated in Table . After incorporating PPA into PEDOT:PSS, the roughness and surface area of the sensing material increased dramatically, resulting in a larger roughness of the sensing material with more active sites available, making it desirable for gas-sensing applications …”

Section: Resultsmentioning

confidence: 99%

“…After incorporating PPA into PEDOT:PSS, the roughness and surface area of the sensing material increased dramatically, resulting in a larger roughness of the sensing material with more active sites available, making it desirable for gas-sensing applications. 13 3.6. Gas Sensor Analysis.…”

Section: Morphology Analysismentioning

confidence: 99%

“…In this direction, conducting polymers have been extensively accepted as an alternative to MO semiconductor sensing materials to detect poisonous and hazardous gas species and VOCs. 13 − 15 …”

Section: Introductionmentioning

confidence: 99%

“…Although MOs offer satisfactory sensitivity and good selectivity toward gases, these materials work at elevated temperatures, resulting in high power consumption; therefore, additional instrumentation arrangements are required. , Room-temperature (RT) operable gas sensors have achieved significant progress during the past few years. In this direction, conducting polymers have been extensively accepted as an alternative to MO semiconductor sensing materials to detect poisonous and hazardous gas species and VOCs. − …”

Section: Introductionmentioning

confidence: 99%

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High Performance of Carbon Monoxide Gas Sensor Based on a Novel PEDOT:PSS/PPA Nanocomposite

et al. 2022

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In this work, the carbon monoxide (CO) detection property of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)/poly( p -anisidine) (PEDOT:PSS/PPA) nanocomposite was systematically investigated at room temperature. The PEDOT:PSS/PPA nanocomposite was synthesized by the cost-effective “in situ chemical oxidation polymerization” technique. The electric, optical, spectroscopic, and structural properties of the as-prepared nanomaterials were analyzed with I – V , UV–vis, Raman, Fourier transform infrared (FTIR), and X-ray diffraction (XRD) spectroscopies. Topological investigations of materials were conducted by atomic force microscopy (AFM). The gas-sensing performance of the PEDOT:PSS/PPA and PEDOT:PSS nanocomposites toward CO gas in the concentration range of 50–300 ppm at room temperature was explored, and their performances were compared. The PEDOT:PSS/PPA sensor shows a perfectly linear response to different concentrations (50–300 ppm) of CO gas ( R 2 = 0.9885), and the response time and recovery time of the CO gas sensor (100 ppm) can be about 58 and 61 s, respectively, showing high sensitivity to CO gas and rapid response recovery with outstanding stability. Thus, the PEDOT:PSS/PPA-based sensors, with their impressive sensing performance, may give assurance for future high-performance CO-sensing applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Morphology Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High Performance of Carbon Monoxide Gas Sensor Based on a Novel PEDOT:PSS/PPA Nanocomposite

et al. 2022

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Fabrication of flexible carbon dioxide gas sensor with conductive polymer/reduced graphene oxide hybrids: Effects of substrate type and mass ratio

Jee

Chow

Yeap

2022

J of Applied Polymer Sci

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Flexible gas sensors made of polyaniline (PANI)‐reduced graphene oxide (rGO) nanocomposite were prepared using three different substrates, namely filter paper, cotton fabric, and weighing paper, through in‐situ reduction of GO and in‐situ polymerization of aniline. Preliminary analysis showed that the PANI/rGO coated on filter paper possesses a superior electrical conductance than PANI/rGO coated on cotton fabric and weighing paper. Such observation was attributed to the good attachment of the PANI/rGO nanocomposites onto the high‐density mesh‐like structure of the filter paper with rough surfaces. In contrast, PANI/rGO coated onto weighing paper and cotton fabric of different surface structures presented lower‐to‐almost negligible conductance. Accordingly, PANI/rGO filter paper was selected for the subsequent evaluation of gas sensing properties. The gas‐sensing performances of the PANI/rGO filter paper sensors indicated that the 5 wt% PANI/rGO (i.e., 5 wt% rGO) sample exhibited the best response of 306% for 500 ppm carbon dioxide (CO2) gas at room temperature with a recovery rate of 41.5%. On the other hand, the optimum recovery rate of 59.5% was identified at 0.5 wt% PANI/rGO sample which exhibited a response of 155%. Owing to the synergy effect, the PANI/rGO sensor outperformed the sensor made of pure PANI or pure rGO.

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Superior ammonia sensing properties of PET‐supported polyaniline/reduced graphene oxide/zinc ferrite ternary nanocomposite thin film at room temperature

Kundu,

Majumder,

Pal Chowdhury

2023

J of Applied Polymer Sci

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This article introduces a ternary nanocomposite‐based flexible thin film ammonia sensor developed on transparent polyethylene terephthalate (PET) substrate in the well‐known in situ chemical oxidative polymerization technique. The nanocomposite consists of three different materials: polyaniline (PANI), reduced graphene oxide (rGO), and zinc ferrite (ZF). Keeping the PANI amount constant, seven PANI/rGO/ZF (PRZ) samples are produced by performing stoichiometric variation between rGO and ZF. Later on, various structural, morphological, and spectroscopic analysis of all the composite materials is accomplished with field emission scanning electron microscopy (FESEM), high‐resolution transmission electron microscopy (HRTEM), X‐ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and ultraviolet–visible spectroscopy (UV–Vis). The sensing performance of the as‐produced sensors toward ammonia (NH3) is examined in the concentration range from 250 ppb to 100 ppm. The study reveals the excellent sensing ability of the PRZ3 sensor (rGO = 30%, ZF = 20%) achieving minimum and maximum responsivity values of ~51% and ~1052%, respectively, at the lowest (250 ppb) and highest (100 ppm) concentration of ammonia. The sensor also exhibits admirable repeatability, good dynamic responsivity, rapid response (tres ~2.9–5 s), moderately faster recovery (trec ~37.9–69.7 s), superb linearity against ppm variation (R2 ~ 0.989), low detection limit (~123 ppb), and exceptional selectivity toward ammonia. The substrate temperature variation divulges that room temperature (30°C) is the ideal temperature for getting outstanding responsivity of the sensor. The study is further accompanied by humidity variation in the incoming air and bending flexibility test of the substrate. A compulsory and legitimate model regarding the sensing mechanism is presented at the end.

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Selective and sensitive chemiresistive sensors based on polyaniline/graphene oxide nanocomposite: A cost-effective approach

Cited by 24 publications

References 38 publications

High Performance of Carbon Monoxide Gas Sensor Based on a Novel PEDOT:PSS/PPA Nanocomposite

High Performance of Carbon Monoxide Gas Sensor Based on a Novel PEDOT:PSS/PPA Nanocomposite

Fabrication of flexible carbon dioxide gas sensor with conductive polymer/reduced graphene oxide hybrids: Effects of substrate type and mass ratio

Superior ammonia sensing properties of PET‐supported polyaniline/reduced graphene oxide/zinc ferrite ternary nanocomposite thin film at room temperature

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