Converting waste Allium sativum peel to nitrogen and sulphur co-doped photoluminescence carbon dots for solar conversion, cell labeling, and photobleaching diligences: A path from discarded waste to value-added products

Das, Poushali; Ganguly, Sayan; Maity, Pintu; Srivastava, Hemant; Bose, Moumita; Dhara, Santanu; Bandyopadhyay, Sambaran; Das, Amit Kumar; Banerjee, Susanta

doi:10.1016/j.jphotobiol.2019.111545

Cited by 74 publications

(50 citation statements)

References 64 publications

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“…Considerable efforts have been taken to overcome these two drawbacks, the development of green synthetic methods for CDs has received considerable consideration. To acquire CDs through a facile, low-cost, eco-friendly method with unique properties, different natural carbon precursors have been studied such as potato [ 31 ], orange juice [ 32 ], grass [ 33 ], oats [ 34 ], Allium sativum peel [ 35 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

et al. 2021

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Carbon dots (CDs) were obtained from medicinal turmeric leaves (Curcuma longa) by a facile one-step hydrothermal method and evaluated for their bactericidal activities against two gram-negative; Escherichia coli, Klebsiella pneumoniae, and two gram-positive counterparts; Staphylococcus aureus, S. epidermidis. The CDs exhibited spherical shapes with a mean size of 2.6 nm. The fluorescence spectra of CDs revealed intense fluorescence at λex/em = 362/429 nm with a bright blue color in an aqueous solution. The CDs showed strong photostability under various environmental conditions (pH, salt, and UV-radiation). The complete bactericidal potency of CDs was 0.25 mg/mL for E.coli and S. aureus after 8 h of exposure, while for K. pneumoniae, and S. epidermidis, the CDs at 0.5 mg/mL good antibacterial effect within 8 h and complete eradication after 24 h of exposure is observed. The release of reactive oxygen species played a crucial role in the death of the bacterial cell. The present study provides a strategy for the preparation of CDs from a medicinal plant and their potential antibacterial activities against four common contagious pathogens.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

et al. 2021

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“… 4–6 They have been used as probes for different analytical uses 7 and also in studies of photocatalysis, energy conversion, optoelectronics, and sensing. 6,8–11 Scientific papers about new applications and reviews of CDs have greatly increased since their discovery. 12–14 CDs have also several advantages over the already well-known quantum dots (QDs), such as neglectable cytotoxicity as well as easy and inexpensive synthesis.…”

Section: Introductionmentioning

confidence: 99%

Temperature-dependence on the optical properties of chitosan carbon dots in the solid state

et al. 2021

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“…27 By studying the areas of the three deconvoluted regions as in equation (1), the interactions between the dispersed CDs and the TPU matrix were examined. 27 –31…”

Section: Resultsmentioning

confidence: 99%

High-performance thermoplastic polyurethane elastomer/carbon dots bulk nanocomposites with strong luminescence

Bai

Ren

Wang

et al. 2020

High Performance Polymers

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In this work, high-performance thermoplastic polyurethane elastomer/carbon dots (TPU/CDs) bulk nanocomposites with strong luminescence were fabricated via in situ polymerization. The CDs were synthesized from citric acid and 2-aminothiophenol. Transmission electron microscope, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and systematic characterization indicated the formation of the CDs and the covalent conjugation of the CDs with TPU. The optical properties of the TPU/CDs nanocomposites were characterized by ultraviolet–visible and fluorescence spectroscopy. Compared to the initial solid-state CDs (the absolute photoluminescence quantum yields (QY): 20%), all the composites exhibited stronger luminescence behavior. When the CDs content was 0.5 wt%, the QY was as high as 68%. Furthermore, the rheological, mechanical, and thermal properties of the nanocomposites were investigated. The rheological properties established the structure–property relationships of the composites. The incorporation of the CDs enhanced the elastic response in viscoelasticity of the nanocomposites. The tensile strength of 1.0 wt% CDs loaded TPU increased from 18.2 MPa to 28.6 MPa, nearly 57% higher than that of the neat TPU. Given the excellent Ag+ detection performance of the CDs, the high QY and the processability of the nanocomposites, Ag+ detection experiments for the composite film were performed. The study will facilitate the applications of luminescent nanocomposites in potential fields.

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Converting waste Allium sativum peel to nitrogen and sulphur co-doped photoluminescence carbon dots for solar conversion, cell labeling, and photobleaching diligences: A path from discarded waste to value-added products

Cited by 74 publications

References 64 publications

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Temperature-dependence on the optical properties of chitosan carbon dots in the solid state

High-performance thermoplastic polyurethane elastomer/carbon dots bulk nanocomposites with strong luminescence

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