Heterostructures of polyaniline and Ce–ZnO nanomaterial coated flexible PET thin films for LPG gas sensing at standard environment

Selvakumar, D.; Sonu, K. P.; Ramadoss, Govindarajan; Sivaramakrishnan, Ramachandran; Jayavel, R.; Eswaramoorthy, M.; Rao, K. Venkateswara

doi:10.1016/j.chemosphere.2022.137492

Cited by 12 publications

(4 citation statements)

References 29 publications

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“…The reported new PANI/BNF a composite has variable values of sensitivity in comparison to other PANI‐based LPG sensors depending upon the concentration of LPG. The BNF/PANI composites has identical detection limit of 100 ppm with PANI/Cadmium ferrite, 31 PANI/Nb 2 O 5 79 and PANI/nickel ferrite 80 ; lower detection limit in comparison to PANI/CMC 24,32 and PANI/Ce‐ZnO 81 ; higher detection limit than PANI/MWCNT 78 and PANI/ZnO‐Ru 82 (Table 8). In terms of response‐recovery time the PANI/BNF composite is comparable to PANI/CMC.…”

Section: Resultsmentioning

confidence: 97%

Liquefied petroleum gas sensing activity of betel nut fiber‐polyaniline conducting composites synthesized by time‐controlled in situ polymerization

Chutia¹,

Phukan²

2023

J of Applied Polymer Sci

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In this paper, we report the liquefied petroleum gas (LPG) sensing behavior of polyaniline‐betel nut fiber (PANI/BNF) composite synthesized through a one‐step in situ oxidative polymerization method using HCl, H2SO4 and H3PO4 as doping acids. The deposition of emeraldine salt (ES) form of PANI on betel nut filament surface is explained by Fourier‐transform infrared spectroscopy (FT‐IR) and Ultraviolet–Visible (UV–vis) spectroscopy. Scanning electron microscopy (SEM) revealed that PANI particle size decreased and the thickness of the coated PANI layer increased with reaction time. Optical band gap of Polyaniline‐Betel nut fiber composites (PB) PB‐2, PB‐4 and PB‐6 were found be 3.68, 3.37, and 2.75 eV using the Tauc plot. X‐ray diffraction (XRD) analysis and thermogravimetric (TG) analysis showed that HCl‐doped PANI/BNF composites have high crystallinity and thermal stability as compared to the composites formed using H2SO4 and H3PO4. The electrical conductivity of the composites was determined by using a multimeter (Keithley Model 2000). The conducting filaments showed good resistive sensing activity toward LPG with minimum (100 ppm) 26% and maximum (1300 ppm) 44% of response sensitivity with decreasing response time and increasing recovery time. The plausible response mechanism of PANI/cellulose sensor toward LPG operating at room temperature is also discussed.

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Section: Resultsmentioning

confidence: 97%

Liquefied petroleum gas sensing activity of betel nut fiber‐polyaniline conducting composites synthesized by time‐controlled in situ polymerization

Chutia¹,

Phukan²

2023

J of Applied Polymer Sci

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“…Among these, polyaniline (PANI) stands out as an organic conducting polymer, highly esteemed for its extensive π-conjugated electron framework compared to other conducting polymers [14]. Noteworthy characteristics of PANI include high thermal stability, efficient and smooth conductivity, and straightforward, cost-effective synthesis requirements, rendering it a promising material for diverse applications [15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of PANI@Ce-doped ZnO (PCZ) heterojunction: A UV-Driven photocatalyst for reduction of methylene blue and study of their structural, optical and electrical properties

Dhanda,

Nain,

Dahiya

2024

Phys. Scr.

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To address the significant issue of wastewater treatment, this research focused on synthesizing PANI@Ce-doped ZnO (PCZ), a ternary heterojunction with varying dopant concentrations. This heterojunction was prepared using an ultrasonic-assisted wet impregnation technique and underwent comprehensive analysis through several techniques, including XRD, UV-DRS, Photoluminescence, FE-SEM, EDAX, FTIR, and Impedance Analyzer. The synergy between the organic and inorganic frameworks resulted in an additive effect on the photocatalyst's degradation efficiency. This was achieved by enhancing its light-absorption properties and tuning the band gap energy. In the photocatalytic degradation process, reactive oxygen species (ROSs), including O2, OH, and h+, played a crucial role in breaking down MB (Methylene Blue) using the PANI@Ce-doped ZnO nanocomposites. Comparing PANI@Ce-doped ZnO with a 1% Cerium concentration (PCZ1) to its counterparts with different dopant concentrations, PCZ1 exhibited significantly elevated photocatalytic activity. This enhancement can be attributed to the improved transfer and separation of photogenerated charge carriers, which resulted from the effective formation of a heterojunction between the two components with a large trapping site.

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“…The antibacterial properties of ZnO are related to grain size, and when it is doped with different chemical elements, these properties are also associated with the optical band gap . In recent years, lanthanide elements such as La, Ce, and Nd were used to tailor the optical band; consequently, the antibacterial properties have been improved. − However, in many cases, these results were derived from the photocatalytic process due to the exposition of the nanoparticles and bacteria to UV light. , In addition, most of these experiments are qualitative, reporting the zone of inhibition values without exhaustive statistical analyses to demonstrate the antibacterial activity. , Cerium-based nanoparticles have reached interest due to their bioactivity and abundance. − The results of improvement in antibacterial activity are still controversial.…”

Section: Introductionmentioning

confidence: 99%

Data-Driven Machine Learning to Predict Antibacterial Activity of Cerium-Doped Nanoparticles

Perfecto-Avalos,

Navarro-López,

Martínez-Beltrán

et al. 2023

ACS Appl. Nano Mater.

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Nowadays, nanomaterials are a real alternative for controlling antibiotic-resistant bacteria. Several nanoparticles have shown good performance in inducing bacterial death due to a photoassisted process. This study employs statistical analyses and machine learning (ML) models to investigate the effect of doping ZnO nanoparticles with cerium ions on their antibacterial activity in a dark environment. Incorporating cerium ions into the ZnO matrix was systematically analyzed in terms of structural, morphological, and optical parameters. The incorporation of cerium ions did not modify the crystal structure. These results were correlated with their qualitative and quantitative antibacterial activity against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa to establish the impact of doping. No significant differences in their antibacterial activity were observed. A maximum of 95% bacterial growth inhibition was observed. ML tools were utilized to model bacterial survival under different conditions. The support vector machine (SVM) model yielded the highest prediction error. In contrast, the extremely random tree model produced an error of only 1.8%, making it an excellent computational tool for decision-making. Using this framework, we conducted attribute importance analysis based on the model, identifying a small subset of parameters as being crucial for generating a precise model. The findings provide light on the most critical characteristics of cerium-doped ZnO nanoparticles’ antibacterial activity.

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Heterostructures of polyaniline and Ce–ZnO nanomaterial coated flexible PET thin films for LPG gas sensing at standard environment

Cited by 12 publications

References 29 publications

Liquefied petroleum gas sensing activity of betel nut fiber‐polyaniline conducting composites synthesized by time‐controlled in situ polymerization

Liquefied petroleum gas sensing activity of betel nut fiber‐polyaniline conducting composites synthesized by time‐controlled in situ polymerization

Synthesis of PANI@Ce-doped ZnO (PCZ) heterojunction: A UV-Driven photocatalyst for reduction of methylene blue and study of their structural, optical and electrical properties

Data-Driven Machine Learning to Predict Antibacterial Activity of Cerium-Doped Nanoparticles

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