Opto-electric property relationship in phosphorus embedded nanocarbon

2018

Sci Rep

Lignite is an abundantly utilized feedstock for the facile synthesis of fluorescent carbon dots and carbon nanomaterials. Its value is appreciated as an energy source for combustion for long time. Herein we report a novel top-down strategy to synthesis lignite based fluorescent nano carbon structures by combined acidic oxidation and chemical reflux. The nanocarbon crystallites in lignite are converted to oxygenated nano carbon dots and graphene sheets. They exhibited stable fluorescence property in the visible region depending on their size, functionalities and defects which were highly stable in all the pH conditions. These nanocarbon structures are an effective probe for fluorescent sensing of label-free and selective detection of glucose ions with detection limit as low as 0.125 mM, promising real-world sensor applications. These findings establish a scalable method for the production of fluorescent carbon based glucose sensor from lignite.

Section: Resultssupporting

confidence: 81%

Tailoring of low grade coal to fluorescent nanocarbon structures and their potential as a glucose sensor

Balachandran

Raj

2018

Sci Rep

“…It is the combination of ionic, electronic, orientation, and space polarizability components that contribute toward the higher dielectric value at lower frequencies. 30 For an applied electric field, these electric dipoles get enough time to get aligned and thus augment the polarization. As seen in Figure 7(a), bare nanocarbon, PN55, and PN19 composites had a significant reduction in the value of the dielectric constant at higher frequencies because of the reduction in the net polarization effect.…”

Section: Resultsmentioning

confidence: 99%

Quantifying the role of nanocarbon fillers on dielectric properties of poly(vinylidene fluoride) matrix

Chougule

Twinkle

Polymers and Polymer Composites

et al. 2022

Self Cite

Development of polymers with excellent dielectric properties is a challenge for advanced electronic devices. Impregnating conducting fillers like carbon nanoparticles can enhance the dielectric constant, retaining low loss due to its compatibility and favorable polarization within the polymer matrix. The multifunctional characteristics of coal-derived nanocarbon can improve permittivity and facilitate large-scale production at a lower cost. The incorporation of coal-based nanocarbon in the polymer matrix and its dielectric response is seldom investigated. In this work, different ratios (10:90, 50:50, 90:10 by weight) of nanocarbon/PVDF composite are prepared via a simple solution casting technique. The dielectric measurements show that nanofillers’ addition significantly augments the dielectric constant value, which is ∼3 times (50:50 composite) higher than pure PVDF. The uniform distribution of 50% filler within the polymer matrix impeded the seepage of charge at the interface and enhanced the permittivity via polarization of accumulated charges. The composite also exhibited balanced dielectric loss that is essential for energy storage applications.

“…3 ). For as-synthesized OLCs, the broad peak centered at ∼3425 cm −1 is associated with the stretching vibrations of alcohols, carboxylic groups, and adsorbed water ( v O-H ) [32] , [33] . The peaks noticed at 3708 cm −1 , and 3780 cm −1 are due to free/unassociated OH groups.…”

Section: Resultsmentioning

confidence: 99%

Mesoporous onion-like carbon nanostructures from natural oil for high-performance supercapacitor and electrochemical sensing applications: Insights into the post-synthesis sonochemical treatment on the electrochemical performance

Ramya

Ultrasonics Sonochemistry

Balachandran

2021

Self Cite