Fabrication and characterization of polyaniline, polyaniline/MgO(30%) and polyaniline/MgO(40%) nanocomposites for their employment in LPG sensing at room temperature

Singh, Neetu; Singh, Prabhat Kumar; Singh, Mohit; Tandon, Poonam; Singh, Saurabh Kumar; Singh, Satyendra

doi:10.1007/s10854-019-00737-y

Cited by 27 publications

(6 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…N–H bending vibrations can be observed at 1303 cm –1 . Peaks at 1500 and 1589 cm –1 were attributed to the C–C stretching vibrations of the benzene-like and quinone-like rings, respectively . FTIR spectra confirmed the formation of PANI on the Au electrode.…”

Section: Resultsmentioning

confidence: 88%

Difunctional Microelectrode Arrays for Single-Cell Electrical Stimulation and pH Detection

Gao,

Yin,

Liu

et al. 2024

Anal. Chem.

View full text Add to dashboard Cite

Due to its direct effect on biomolecules and cells, electrical stimulation (ES) is now widely used to regulate cell proliferation, differentiation, and neurostimulation and is even used in the clinic for pain relief, treatment of nerve damage, and muscle rehabilitation. Conventional ES is mostly studied on cell populations, but the heterogeneity of cancer cells results in the inability to access the response of individual cells to ES. Therefore, detecting the extracellular pH change (ΔpHe) after ES at the single-cell level is important for the application of ES in tumor therapy. In this study, cellular ΔpHe after periodic impulse electrostimulation (IES) was monitored in situ by using a polyaniline (PANI)-modified gold microelectrode array. The PANI sensor had excellent sensitivity (53.68 mV/pH) and linear correlation coefficient (R 2 = 0.999) over the pH range of 5.55−7.41. The cells showed different degrees of ΔpHe after the IES with different intervals and stimulation potential. A shorter pulse interval and a higher stimulation potential could effectively enhance stimulation and increase cellular ΔpHe. At 0.5 V potential stimulation, the cellular ΔpHe increased with decreasing pulse interval. However, if the pulse interval was long enough, even at a higher potential of 0.7 V, there was no significant additional ΔpHe due to the insufficient stimulus strength. Based on the above conclusions, the prepared PANI microelectrode arrays (MEAs) were capable of stimulating and detecting single cells, which contributed to the deeper application of ES in tumor therapy.

show abstract

Section: Resultsmentioning

confidence: 88%

Difunctional Microelectrode Arrays for Single-Cell Electrical Stimulation and pH Detection

Gao,

Yin,

Liu

et al. 2024

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…In fig.2(b), the peaks at 2θ = 8.9 and 14.96 were the distinct doping diffraction of low crystalline polyaniline. The peaks at 2θ = 21.04 and 25.34 confirmed the presence of polyaniline emeraldine chain with repeated units[40][41][42]. The peaks observed in fig.2(c) at 2θ = 25.35 o , 37.85 o , 48.04 o ,54.13 o , 55.13 o, and 62.87 o were due to anatase TiO2 nanoparticles in the hybrid nanocomposite[14,18,43].…”

mentioning

confidence: 63%

Enhancing the Performance and Recyclability of Polyaniline/TiO2 Hybrid Nanocomposite by Immobilizing with Zein/Hydroxyethyl cellulose Composites for Removal of Anionic dyes

Gelaw

Sarojini

2021

Preprint

View full text Add to dashboard Cite

Fabricating a stable, recyclable, and eco-friendly photocatalyst for dye treatment is vital in sustaining a clean ecosystem. In this regard, polyaniline/TiO2 (PANI/TiO2) photocatalyst was immobilized by zein/hydroxyethyl cellulose (zein/HEC) adhesive to enhance recyclability and catalytic activity. The blending of zein/HEC/PANI/TiO2 photocatalyst involves insitu oxidative polymerization, followed by immobilization with zein/HEC functionalized composites. The PANI/TiO2 composite was successfully grafted with the adhesive through physicochemical interaction, as evidenced by field emission scanning electron microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), and Powder X-ray diffractometer (XRD). The simultaneous thermal analysis (STA) results show that the photocatalyst has the best thermal stability relative to PANI and PANI/TiO2 in the recommended range of dye degradation temperature. The effect of external factors like TiO2 nanoparticle proportion, pH of the solution, and catalyst dosage was studied in response to dye degradation capacity. The synthesized catalyst is efficient to degrade methyl orange in a wide range of pH. The kinetics of the catalysis reaction obeys first order kinetics. The maximum degradation efficiency achieved was 97.9 and 84.3% in the presence and absence of light, respectively. The catalyst was easily recovered by decantation, and its catalytic efficacy was more than 94% after five cycles. Hence, it is a promising alternative for decolorizing anionic dyes from wastewater.

show abstract

“…FTIR spectrum of PANI/MgO ( Figure 3 b) presents a band at 634 cm −1 associated with a C-C bond of an aromatic ring; 3323 cm −1 is attributed to an OH band. C-H vibrations (2942 cm −1 ), C=N vibrations (1653 cm −1 ), and a C-N bond (1021 cm −1 ) typical of polyaniline were also observed in the spectrum [ 39 , 40 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Polyaniline Coated Magnesium and Cobalt Oxide Nanoparticles through Eco-Friendly Approach and Their Application as Antifungal Agents

Manzoor

Yasmin

Raza³

et al. 2021

Polymers

View full text Add to dashboard Cite

Plant-mediated synthesis of nanoparticles exhibits great potential to minimize the generation of chemical waste through the utilization of non-toxic precursors. In this research work, we report the synthesis of magnesium oxide (MgO) and cobalt oxide (Co3O4) nanoparticles through a green approach using Manilkara zapota leaves extract, their surface modification by polyaniline (PANI), and antifungal properties against Aspergillus niger. Textural and structural characterization of modified and unmodified metal oxide nanoparticles were evaluated using FT-IR, SEM, and XRD. The optimal conditions for inhibition of Aspergillus niger were achieved by varying nanoparticles’ concentration and time exposure. Results demonstrate that PANI/MgO nanoparticles were superior in function relative to PANI/Co3O4 nanoparticles to control the growth rate of Aspergillus niger at optimal conditions (time exposure of 72 h and nanoparticles concentration of 24 mM). A percentage decrease of 73.2% and 65.1% in fungal growth was observed using PANI/MgO and PANI/Co3O4 nanoparticles, respectively, which was higher than the unmodified metal oxide nanoparticles (67.5% and 63.2%).

show abstract

Fabrication and characterization of polyaniline, polyaniline/MgO(30%) and polyaniline/MgO(40%) nanocomposites for their employment in LPG sensing at room temperature

Cited by 27 publications

References 60 publications

Difunctional Microelectrode Arrays for Single-Cell Electrical Stimulation and pH Detection

Difunctional Microelectrode Arrays for Single-Cell Electrical Stimulation and pH Detection

Enhancing the Performance and Recyclability of Polyaniline/TiO2 Hybrid Nanocomposite by Immobilizing with Zein/Hydroxyethyl cellulose Composites for Removal of Anionic dyes

Synthesis of Polyaniline Coated Magnesium and Cobalt Oxide Nanoparticles through Eco-Friendly Approach and Their Application as Antifungal Agents

Contact Info

Product

Resources

About