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Carbon Quantum Dots Synthesis - Europe PMC

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Last Updated: 28 January 2023

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Rapid One-Pot Microwave Assisted Green Synthesis Nitrogen Doped Carbon Quantum Dots as Fluorescent Precursor for Estimation of Modafinil as Post-Covid Neurological Drug in Human Plasma with Greenness Assessments.

MODAFINL, a neuro-stimulant anti-narcoleptic drug, is used to treat medical disorders caused by COVID-19. MOD was used to treat narcolepsy, shift-work sleep disorder, and obsstructive sleep apnea-related sleepiness. The quantum yield of the synthesized N@CQDs was found to be 41. 3 percent, according to 700 w. using microwave synthesis at 700 w. The quantum dots' fluorescence intensity was gradually reduced by increasing the number of MOD.

Source link: https://europepmc.org/article/MED/36576682


Eco-friendly Synthesis of Carbon Quantum Dots as an Effective Adsorbent.

Fluorescent carbon quantum dots were produced by an economical, green, and single-step process with the support of microwave heating of urea with bagasse, cellulose, or carboxymethyl cellulose. The results showed that CQDs synthesized from CMC, cellulose, and SCB as good products for further use in the fields of wastewater pollution detection, adsorption, and chemical sensing applications. All CQDs isotherms fit well with the Langmuir model, according to Freundlich and Temkin models, although Freundlich and Temkin models are more compatible with the Langmuir model.

Source link: https://europepmc.org/article/MED/36435905


Sustainable synthesis of biomass-derived carbon quantum dots and their catalytic application for the assessment of α,β-unsaturated compounds.

Herein, we present a simple, reproducible, and environment-friendly method for the synthesis of carbon quantum dots using the mango kernel as a renewable green carbon source. These fluorescent CQDs demonstrated excellent water solubility with a uniform size of about 6 nm. According to a comparative analysis, the as-synthesized CQDs showed greater catalytic activity under microwave radiation as compared to the conventional methods. These reusable CQDs are a green alternative to metals in synthetic organic chemistry, and they are a cost-effective alternative to metals in synthetic organic chemistry.

Source link: https://europepmc.org/article/MED/36425689


Solvothermal synthesis of nitrogen-doped carbon quantum dots for the sensitive detection of azithromycin.

Carbon quantum dots are widely used in many drug detection applications due to their excellent photoluminescence capabilities. And it was discovered that either Cu 2+ or the macrolide antibiotic azithromycin had no effect on the fluorescence intensity of N-CQDs. Using azithromycin, the mixture of N-CQDs and Cu 2+ displayed good linearity with a low detection limit of 0. 52 bc M.

Source link: https://europepmc.org/article/MED/36301674


Hydrothermal synthesis of carbon quantum dots with size tunability via heterogeneous nucleation.

Hydrothermal synthesis has been extensively used for the manufacture of carbon quantum dots. The average number of CQDs can simply be controlled by a different filling volume of sucrose solution in the hydrothermal reactor, while keeping the other experimental parameters constant. If homogeneous nucleation plays a major role in hydrothermal synthetization, the CQDs synthesized by using different filling volumes should be roughly the same size. Therefore, the hydrothermal synthesis of CQDs with size-tunability can be achieved by a heterogeneous process involving the total surface areas between the precursor and reactor.

Source link: https://europepmc.org/article/MED/36380919


Fast one-pot microwave-assisted green synthesis of highly fluorescent plant-inspired S,N-self-doped carbon quantum dots as a sensitive probe for the antiviral drug nitazoxanide and hemoglobin.

By 4-min microwave treatment of onion and cabbage juices as renewable, affordable, green, and self-passivation agents, blue emissive S,N-CQDs were synthesized with a fluorescence quantum yield of 15. 2%. The S,N-CQDs demonstrated high sensitivity as a fluorescence probe for targeted determination of nitazoxanide, which recently found wide use as a repurposed drug for COVID-19, over a concentration range of 0. 25-0. 4 bcM. U03bcM is a bcM. The nanoprobe has been used for NTZ determination in pharmaceutical samples with excellent % recovery of 98. 14 to 0. 42 percent. The investigation has been used to determine Hb in blood samples, showing strong correlation with the findings reported by a medical laboratory. Different greenness tools and applications have positively investigated the development of the probe.

Source link: https://europepmc.org/article/MED/36442950


Green synthesis of carbon quantum dots from wasted enzymatic hydrolysis lignin catalyzed by organic acids for UV shielding and antioxidant fluorescent flexible film

Biomass wastes have been shown to be sufficient for the synthesis of carbon quantum dots using green and sustainable hydrothermal methods, and they have been used in a variety of fields. However, the yield of CQDs from biomass directly hydrothermal is extremely poor. This research sought to establish the possibility of conducting blue emissive CQD by a hydrothermal process using enzymatic hydrolysis lignin from biomass waste as the precursor and three organic acids, such as citric acid, DL-malic acid, and oxalic acid for modification. CQDs modified by organic acids had superior water solubility and smaller particle size than CQDs without organic acids, according to HR-TEM analysis. These findings are important in the adoption of a low-cost, environmentally friendly, and eco friendly manufacturing process to produce CQDs with high quantum yield and increasing the application range of lignin-based CQDs.

Source link: https://europepmc.org/article/MED/IND607921270

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions