Polyaniline-multiwalled carbon nanotube (PANI-MWCNT): Room temperature resistive carbon monoxide (CO) sensor

Roy, Atanu; Ray, Apurba; Sadhukhan, Priyabrata; Naskar, Kaushik; Lal, Gobardhan; Bhar, R.; Sinha, Chittaranjan; Das, Sachindranath

doi:10.1016/j.synthmet.2018.08.024

Cited by 78 publications

(30 citation statements)

References 47 publications

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“…Selectivity is defined as the ratio of the target gas response to another gas or other compound that may interfere with it. Generally, a PANI-based sensor may interfere with alcohols, ammonia, and other gases including methane, CO 2 , and NO 2 [ 56 ]. Figure 11 b clearly shows that the PANI:PSS/SWCNT/Fc exhibited a higher response for 300 ppm CO among methane.…”

Section: Resultsmentioning

confidence: 99%

A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor

Savin

Mihailescu

Avramescu

et al. 2021

Sensors

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Developing a sensing layer with high electroactive properties is an important aspect for proper functionality of a wearable sensor. The polymeric nanocomposite material obtained by a simple electropolymerization on gold interdigitated electrodes (IDEs) can be optimized to have suitable conductive properties to be used with direct current (DC) measurements. A new layer based on polyaniline:poly(4-styrenesulfonate) (PANI:PSS)/single-walled carbon nanotubes (SWCNT)/ferrocene (Fc) was electrosynthesized and deposed on interdigital transducers (IDT) and was characterized in detail using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoemission spectroscopy (XPS), and X-ray diffraction (XRD). The sensor characteristics of the material towards carbon monoxide (CO) in the concentration range of 10–300 ppm were examined, showing a minimal relative humidity interference of only 1% and an increase of sensitivity with the increase of CO concentration. Humidity interference could be controlled by the number of CV cycles when a compact layer was formed and the addition of Fc played an important role in the decrease of humidity. The results for CO detection can be substantially improved by optimizing the number of deposition cycles and enhancing the Fc concentration. The material was developed for selective detection of CO in real environmental conditions and shows good potential for use in a wearable sensor.

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Section: Resultsmentioning

confidence: 99%

A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor

Savin

Mihailescu

Avramescu

et al. 2021

Sensors

View full text Add to dashboard Cite

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“…Therefore, the results indicate that prepared hybrid thermally stable and electrically conductive nanomaterials have potential applications in the manufacture of supercapacitors [61,62], rechargeable batteries [63,64], sensors [41,45,65,66,67,68], sorbents [69], field-emission devices [70], anti-corrosion coatings [71], dye-sensitized solar cells [72,73,74,75,76,77,78,79], etc.…”

Section: Resultsmentioning

confidence: 99%

Formation Features of Hybrid Nanocomposites Based on Polydiphenylamine-2-Carboxylic Acid and Single-Walled Carbon Nanotubes

et al. 2019

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Hybrid nanocomposites based on electroactive polydiphenylamine-2-carboxylic acid (PDPAC) and single-walled carbon nanotubes (SWCNTs) were obtained for the first time. Polymer-carbon nanomaterials were synthesized via in situ oxidative polymerization of diphenylamine-2-carboxylic acid (DPAC) in the presence of SWCNTs by two different ways. Hybrid SWCNT/PDPAC nanocomposites were prepared both in an acidic medium and in the heterophase system in an alkaline medium. In the heterophase system, the monomer and the SWCNTs are in the organic phase (chloroform) and the oxidant (ammonium persulfate) is in an aqueous solution of ammonium hydroxide. The chemical structure, as well as the electrical and thermal properties of the developed SWCNT/PDPAC nanocomposite materials were investigated.

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“…Different loadings of MWCNT (0.1-0.3 wt %)/cotton yarns was put into the 100 ml of hydrochloric solution (1 mol/L), then the distilled aniline was added to the solution at 0-4 °C and stirred for 25 min. Meanwhile, ammonium persulfate was dissolved in the 100 ml of hydrochloric solution (1 mol/L), and dropwise added to the solution at 0-4 °C under constant stirring [25,26]. After reaction for 12 h, the yarns were fetched out and thoroughly washed with deionized water and ethanol.…”

Section: The Preparation Of Mwcnt/cotton Yarns and Pani/mwcnt/cotton Yarnsmentioning

confidence: 99%

Urea Detection of Electrochemical Transistor Sensors based on Polyanline (PANI)/MWCNT/Cotton Yarns

et al. 2021

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A cotton yarn biosensor based on electrochemical transistor functionalized with MWCNT and PANI was developed for the detection of urea. The transistors based on PANI/MWCNT/cotton yarns under optimized MWCNT concentration has been obtained, which exhibited high on/off current ratio, fast response time, and good operational stability. A transistor-based urea sensor was prepared from PANI/MWCNT/cotton yarns, which could monitor urea in the 1 nM-1 mM linear range with the correlation coefficient of 0.9716. Furthermore, the sensor showed superior reproducibility and high specificity. The practical applications of the proposed sensor were also confirmed. These results indicate the flexible transistor can be used as an efficient platform for biological detection in body fluids.

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Polyaniline-multiwalled carbon nanotube (PANI-MWCNT): Room temperature resistive carbon monoxide (CO) sensor

Cited by 78 publications

References 47 publications

A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor

A New Hybrid Sensitive PANI/SWCNT/Ferrocene-Based Layer for a Wearable CO Sensor

Formation Features of Hybrid Nanocomposites Based on Polydiphenylamine-2-Carboxylic Acid and Single-Walled Carbon Nanotubes

Urea Detection of Electrochemical Transistor Sensors based on Polyanline (PANI)/MWCNT/Cotton Yarns

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