One pot green synthesis of C-dots from groundnuts and its application as Cr(VI) sensor and in vitro bioimaging agent

Roshni,; Misra, Sweta; Santra, Manas Kumar; Ottoor, Divya

doi:10.1016/j.jphotochem.2018.12.028

Cited by 68 publications

(3 citation statements)

References 41 publications

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“…Humic acid and glutathione reduce Cr 6+ to Cr 3+ , which reverses quenching as the N-CDs are not reactive towards Cr 3+ . The CDs were biocompatible with low cytotoxicity values, making them suitable for bioimaging of MCF-7 cells [ 149 ].…”

Section: Reviewmentioning

confidence: 99%

“…CDs have been widely used as sensors for metal ions such as Fe 3+[49,59,85,[138][139][140][141], Fe 2+[25], Hg 2+[109,142,143], Cu 2+[86,108,[144][145][146], Cd 2+[147], Cr 6+[52,[148][149][150][151][152], Co 2+[153], Au 3+[154], As 3+[155,156], Pb 2+[157], and Ag +[158]. This sensing application is based on the principle that fluorescence is either quenched or increases when the functional groups on the surface of the CDs interact with the metal ions creating new electron-hole pairs via energy transfer.…”

mentioning

confidence: 99%

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Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

Kanwal¹,

Bibi²,

Hyder³

et al. 2022

Beilstein J. Nanotechnol.

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Carbon dots (CDs) show extensive potential in various fields such as sensing, bioimaging, catalysis, medicine, optoelectronics, and drug delivery due to their unique properties, that is, low cytotoxicity, cytocompatibility, water-solubility, multicolor wavelength tuned emission, photo-stability, easy modification, strong chemical inertness, etc. This review article especially focuses on the recent advancement (2015–2022) in the green synthesis of CDs, their application in metal ions sensing and microbial bioimaging, detection, and viability studies as well as their applications in pathogenic control and plant growth promotion.

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Section: Reviewmentioning

confidence: 99%

mentioning

confidence: 99%

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

Kanwal¹,

Bibi²,

Hyder³

et al. 2022

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…The NCQDs can be applicable for have become evident by recent reports, which include their simple availability, safe handling, and being biodegradable. Furthermore, the usage of these waste sources for synthesizing purposes results in the reduction of pollution and also helps in cleaning up the environment from these waste materials [39,45]. Apparently, the fluorescence functionality of NCQDs can be improved through a more enhanced doping of hetero-atoms into the carbonaceous framework and surface passivation and furthermore, more qualified CQDs can be obtained facilely through the concurrent proceeding of hetero element doping and passivation [1,23].…”

Section: Introductionmentioning

confidence: 99%

Nanosensors of Fluorescent Carbon Quantum Dots Derived from Banana Peel: Application in Sr2+ and Co2+ Detection

et al. 2022

austinjbiosensbioelectron

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Natural Carbon Quantum Dots (NCQDs) are known to contain photo luminescence property and stand as a promising nanomaterial group. Therefore, we intended to generate an intelligible and effective hydrothermal procedure for performing the green synthesis of this material through the usage of banana peel waste as a feasible and durable natural carbon source. The obtained NCQDs were characterized by the means of UV-visible absorption spectroscopy, spectrofluorometry, Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD), zeta potential, Atomic Force Microscopy (AFM), Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM), and Thermo Gravimetric Analysis (TGA). The lack of utilizing any toxic substances has guaranteed the safety of this procedure in all the biological practices. Therefore, the high crystalline and spherical morphology of synthesized NCQDS with an average roughness of about 5.9 nm were indicated by the results of TEM and XRD. We also observed a high water stability and solubility due to the presence of hydroxyl and carboxyl group and excitation- dependent emission performance with the satisfying quantum yield of 12 %. The zeta potential of prepared NCQDs reached up to -27.4 mV. Furthermore, in order to determine the low toxicity and favorable biocompatibility of this product, we studied the toxic effects of NCQDs on the fibroblast cell line of a normal mouse through the MTT assay. In conformity with the gathered data, these NCQDs contain the potential of being utilized as a nontoxic carrier and a fine alternative for bio-sensor, bio-imaging, and drug delivery applications. The development of these NCQDs was completed with the objective of acting as a highly sensitive fluorescent “on-off-on” switch sensor in the course of the selective and simultaneous sensing of Sr2+ and Co2+. Fluorescence data revealed that the binding constants of Sr2+ and Co2+ to NCQDs were to be 1.39 × 104 M-1 and 1.58 × 104 M-1 respectively. The observations were indicative of a linear relationship among the Sr2+ and Co2+ ions volume and the fluorescence intensity throughout the range of 0 to 0.1 mM.

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Biomass‐Derived Carbon Quantum Dots for Fluorescence Sensors

Vandarkuzhali

Shanmugapriya²,

et al. 2022

Biomass‐Derived Carbon Materials

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One pot green synthesis of C-dots from groundnuts and its application as Cr(VI) sensor and in vitro bioimaging agent

Cited by 68 publications

References 41 publications

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

Nanosensors of Fluorescent Carbon Quantum Dots Derived from Banana Peel: Application in Sr2+ and Co2+ Detection

Biomass‐Derived Carbon Quantum Dots for Fluorescence Sensors

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