Non-aqueous onion like nano-carbons from waste diesel-soot used as FRET-based sensor for sensing of nitro-phenols

Kumar, Gunture; Garg, Anjali; Aggarwal, Ruchi; Kaushik, Jaidev; Prajapati, Rajneesh Kumar; Sonkar, Sumit Kumar

doi:10.1016/j.envres.2022.113308

Cited by 13 publications

(4 citation statements)

References 67 publications

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“…The peaks present in the C 1s spectrum of CNC in Figure c can be resolved into three different bindings of carbon with respect to their local environment. The peak at ∼284.23 eV is assigned to C–C/CC linkages (C without O bonds), the peak at ∼285.82 eV is attributed to C–O, which may be from the alcohols, ether, or acetal groups, and the peak at ∼287.32 eV is attributed to CO, which may be from acid or ester groups. − In the high-resolution O 1s spectra in Figure d, a peak at ∼532.31 eV is observed, attributed to the presence of C–O/CO bindings . Also, the deconvoluted spectra of S 2p in Figure e exhibit a peak at ∼168.2 eV signifying the presence of S–O binding in CNC and also confirm the binding in CNC, as expected from the H 2 SO 4 hydrolysis of MCC …”

Section: Resultsmentioning

confidence: 98%

“…46−48 In the high-resolution O 1s spectra in Figure 2d, a peak at ∼532.31 eV is observed, attributed to the presence of C−O/C�O bindings. 49 Also, the deconvoluted spectra of S 2p in Figure 2e exhibit a peak at ∼168.2 eV signifying the presence of S−O binding in CNC and also confirm the binding in CNC, as expected from the H 2 SO 4 hydrolysis of MCC. 50 2.3.…”

Section: X-ray Photoelectron Spectroscopy (Xps) Analysismentioning

confidence: 99%

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Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Aggarwal

Garg

Saini

et al. 2022

Ind. Eng. Chem. Res.

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Cellulose nanocrystals (CNCs) as a bio-based adsorbent material have been synthesized at mild temperature reaction conditions using acid hydrolysis of microcrystalline cellulose (MCC) by sulfuric acid. CNCs by a simple acid treatment become enriched with negatively charged surface functionalities and shows good adsorption capacity. The CNCs have been characterized by X-ray photoelectron spectroscopy, Fourier transform Infrared, X-ray diffraction spectroscopy, and thermogravimetric analysis for their chemical composition, functionality, crystallinity, and stability, respectively. Sulfated CNCs have been used to selectively remove the toxic Janus Green (JG) dye tested out of many other dyes via adsorption and showed a Langmuir adsorption capacity of ∼77 mg g. −1 The effects of pH, temperature, concentration, and loading capacity have also been explored. The adsorption kinetics follows the pseudo-second-order pathway and thermodynamic analysis of the system indicates that the process is exothermic and spontaneous. Moreover, for the practical applicability of the proposed method, the adsorption of JG was also analyzed in four spiked industrial samples collected from nearby textile industries, where they removed more than 80% of the dye from the complex industrial water system.

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Section: Resultsmentioning

confidence: 98%

Section: X-ray Photoelectron Spectroscopy (Xps) Analysismentioning

confidence: 99%

Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Aggarwal

Garg

Saini

et al. 2022

Ind. Eng. Chem. Res.

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“…Three different concentrations of OFLX were spiked in the samples. Table S3 shows the good % recovery and % relative standard deviation (RSD), indicating the efficiency of wsCD as a sensor material. , …”

Section: Resultsmentioning

confidence: 98%

“…Table S3 shows the good % recovery and % relative standard deviation (RSD), indicating the efficiency of wsCD as a sensor material. 67,68 Antimicrobial Studies. Biocompatibility studies, including antimicrobial (antibacterial and antifungal) and antibiosis (antibacterial and antifungal) analyses, are performed for wsCD.…”

Section: X-ray Photoelectron Spectroscopy (Xps) Analysismentioning

confidence: 99%

Cellulose-Derived Carbon Dots for Inner Filter Effect-Based Selective Sensing of Ofloxacin Antibiotics

Aggarwal

Garg

Kumar

et al. 2023

ACS Appl. Nano Mater.

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A two-step viable synthetic approach for quick and energy-efficient acid-based charring is described here to fabricate self-passivated fluorescent water-soluble CD (wsCD) from sustainable microcrystalline cellulose (MCC) materials. The aqueous solution of wsCD exhibits blue emission under UV-light illumination and shows a fluorescence quantum yield of ∼6%. The wsCD are used here for the selective sensing of ofloxacin (OFLX) from among the four tested antibiotics of the fluoroquinolone class, namely, ciprofloxacin (CPLX), ofloxacin (OFLX), levofloxacin (LVLX), and moxifloxacin (MXLX) based on the simpler fluorescence quenching experiment with a detection limit of ∼0.025 ppm. The plausible mechanism for the selective sensing of OFLX has been proposed based on a detailed analysis of absorbance and time-resolved photoluminescence spectroscopy which indicates the involvement of the inner-filter effect (IFE). Antimicrobial studies of wsCD were conducted on two bacterial strains (Escherichia coli and Staphylococcus aureus) and two fungal strains (Aspergillus niger and Penicillium chrysogenum), where wsCD did not show any toxic effects up to the concentration of 1 mg/mL, hence supporting their biocompatible behavior. Further, an antibiosis study involving the combination of the antibiotic and antifungal agents with wsCD against the growth of the same bacterial and fungal strains was conducted, where wsCD showed mild antifungal activity.

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Emphasizing laccase based amperometric biosensing as an eventual panpharmacon for rapid and effective detection of phenolic compounds

Guliya,

Yadav,

Nohwal

et al. 2024

Biochimica et Biophysica Acta (BBA) - General Subjects

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Non-aqueous onion like nano-carbons from waste diesel-soot used as FRET-based sensor for sensing of nitro-phenols

Cited by 13 publications

References 67 publications

Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Cellulose-Derived Carbon Dots for Inner Filter Effect-Based Selective Sensing of Ofloxacin Antibiotics

Emphasizing laccase based amperometric biosensing as an eventual panpharmacon for rapid and effective detection of phenolic compounds

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