Ecofriendly Synthesis of Fluorescent Nitrogen-Doped Carbon Dots from Coccinia grandis and its Efficient Catalytic Application in the Reduction of Methyl Orange

Chandrasekaran, P.; Arul, Velusamy; Sethuraman, Mathur Gopalakrishnan

doi:10.1007/s10895-019-02474-1

Cited by 73 publications

(20 citation statements)

References 38 publications

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“…The emission of toxic dyes into aquatic systems is a significant environmental problem [ 22 , 23 , 24 , 25 , 26 , 27 ]. A typical hazardous dye, methylene blue (MB), prevents sunlight from reaching the water body, causing long-term harm to the aquatic systems [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Platinum Nanoparticles (PtNPs) Synthesis by Acid Phosphatase Mediated Eco-Benign Combined with Photocatalytic and Bioactivity Assessments

et al. 2022

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Noble metal nanoparticles (NMNPs) are viable alternative green sources compared to the chemical available methods in several approach like Food, medical, biotechnology, and textile industries. The biological synthesis of platinum nanoparticles (PtNPs), as a strong photocatalytic agent, has proved as more effective and safer method. In this study, PtNPs were synthesized at four different temperatures (25 °C, 50 °C, 70 °C, and 100 °C). PtNPs synthesized at 100 °C were smaller and exhibited spherical morphology with a high degree of dispersion. A series of physicochemical characterizations were applied to investigate the synthesis, particle size, crystalline nature, and surface morphology of PtNPs. The biosynthesized PtNPs were tested for the photodegradation of methylene blue (MB) under visible light irradiations. The results showed that PtNPs exhibited remarkable photocatalytic activity by degrading 98% of MB only in 40 min. The acid phosphatase mediated PtNPs showed strong bacterial inhibition efficiency against S. aureus and E. coli. Furthermore, it showed high antioxidant activity (88%) against 1,1-diphenyl-2-picryl-hydrazil (DPPH). In conclusion, this study provided an overview of the applications of PtNPs in food chemistry, biotechnology, and textile industries for the deterioration of the natural and synthetic dyes and its potential application in the suppression of pathogenic microbes of the biological systems. Thus, it could be used as a novel approach in the food microbiology, biomedical and environmental applications.

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Section: Introductionmentioning

confidence: 99%

Optimization of Platinum Nanoparticles (PtNPs) Synthesis by Acid Phosphatase Mediated Eco-Benign Combined with Photocatalytic and Bioactivity Assessments

et al. 2022

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“…In order to make the CQDs, the pear juice was held in a Teflon-lined autoclave at 180°C for 36 h and filtered with a 0.22 µm filter. Chandrasekaran et al prepared nitrogen-doped carbon dots (N-CDs) from Coccinia grandis extract by a simple hydrothermal method ( Chandrasekaran et al, 2020 ). The Coccinia grandis extract and aqueous ammonia were held in a Teflon-lined autoclave for 12 h at 180°C, filtered with Whatman 40 filter paper, and centrifuged at 1,000 rpm for 1 h to make N-CDs.…”

Section: Synthesis Methods Of Cqdsmentioning

confidence: 99%

Recent Progress on Carbon Quantum Dots Based Photocatalysis

Jung

Sapner

Adhikari³

et al. 2022

Front. Chem.

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“…EDS (also referred as EDX) is applied for analyzing the elemental composition of CDs, e.g., the content of C, N, and O in CDs, as well as the presence of other doped elements, such as silicon (Si). Additionally, this technique also provides information about the purity of CDs [183][184][185]. EDS involves the focusing of high-energy X-ray beams onto the CDs specimen to be evaluated.…”

Section: Energy Dispersive X-ray Spectroscopymentioning

confidence: 99%

“…EDS involves the focusing of high-energy X-ray beams onto the CDs specimen to be evaluated. As a consequence of computing the energy and number of the X-rays radiated from CDs sample by employing energy dispersive spectrometer, an X-ray spectrum is generated [155,184,186]. Usually, quantitative and qualitative data of EDS spectrum are interpreted from the peak intensity and peak energy, respectively.…”

Section: Energy Dispersive X-ray Spectroscopymentioning

confidence: 99%

Carbon Dots: Classification, Properties, Synthesis, Characterization, and Applications in Health Care—An Updated Review (2018–2021)

2021

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Carbon dots (CDs) are usually smaller than 10 nm in size, and are meticulously formulated and recently introduced nanomaterials, among the other types of carbon-based nanomaterials. They have gained significant attention and an incredible interest in the field of nanotechnology and biomedical science, which is merely due to their considerable and exclusive attributes; including their enhanced electron transferability, photobleaching and photo-blinking effects, high photoluminescent quantum yield, fluorescence property, resistance to photo-decomposition, increased electrocatalytic activity, good aqueous solubility, excellent biocompatibility, long-term chemical stability, cost-effectiveness, negligible toxicity, and acquaintance of large effective surface area-to-volume ratio. CDs can be readily functionalized owing to the abundant functional groups on their surfaces, and they also exhibit remarkable sensing features such as specific, selective, and multiplex detectability. In addition, the physico-chemical characteristics of CDs can be easily tunable based on their intended usage or application. In this comprehensive review article, we mainly discuss the classification of CDs, their ideal properties, their general synthesis approaches, and primary characterization techniques. More importantly, we update the readers about the recent trends of CDs in health care applications (viz., their substantial and prominent role in the area of electrochemical and optical biosensing, bioimaging, drug/gene delivery, as well as in photodynamic/photothermal therapy).

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Ecofriendly Synthesis of Fluorescent Nitrogen-Doped Carbon Dots from Coccinia grandis and its Efficient Catalytic Application in the Reduction of Methyl Orange

Cited by 73 publications

References 38 publications

Optimization of Platinum Nanoparticles (PtNPs) Synthesis by Acid Phosphatase Mediated Eco-Benign Combined with Photocatalytic and Bioactivity Assessments

Optimization of Platinum Nanoparticles (PtNPs) Synthesis by Acid Phosphatase Mediated Eco-Benign Combined with Photocatalytic and Bioactivity Assessments

Recent Progress on Carbon Quantum Dots Based Photocatalysis

Carbon Dots: Classification, Properties, Synthesis, Characterization, and Applications in Health Care—An Updated Review (2018–2021)

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