Green synthesis of fluorescent carbon dots from Hongcaitai for selective detection of hypochlorite and mercuric ions and cell imaging

Li, Lushuang; Jiao, Xiaoyi; Zhang, Yu; Cheng, Cheng; Huang, Kun; Xu, Li

doi:10.1016/j.snb.2018.02.141

Cited by 116 publications

(49 citation statements)

References 56 publications

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“…Therefore, CDs from kelp were smaller than 10 nm, which is the typical size range of CDs. Li et al 23 also reported that the morphology of CDs from hongcaitai had a uniform quasi-spherical shape with size distribution of 1.6-2.3 nm. Figure 2 shows the FTIR spectrum and XRD pattern of CH and CDs/CH.…”

Section: Morphology and Size Distribution Of Cdsmentioning

confidence: 96%

“…CDs were prepared by the hydrothermal method using kelp as a carbon precursor according to the method from Li et al 23 A 20 g sample of washed kelp was shredded and then mixed with 100 mL distilled water to break, and then 0.5 mL ethylenediamine was put into the mixture. The mixture was put into a hydrothermal reaction kettle, heated at 180 ∘ C for 8 h, and then cooled.…”

Section: Preparation Of Cdsmentioning

confidence: 99%

“…Many researchers have presented that a CH coating can effectively maintain quality and inhibit microbial growth in fresh‐cut products such as carrot, mango, and pineapple . Carbon dots (CDs) are a kind of carbon nanomaterial, with size below 10 nm, that have attracted the attention of many researchers for use in a variety of fields, such as biological imaging, chemical sensing and photocatalysis due to low toxicity, good aqueous solubility and biocompatibility, chemical inertness, and fluorescence properties . CDs with oxygen‐containing functional groups (OH, COOH, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…22 Carbon dots (CDs) are a kind of carbon nanomaterial, with size below 10 nm, that have attracted the attention of many researchers for use in a variety of fields, such as biological imaging, chemical sensing and photocatalysis due to low toxicity, good aqueous solubility and biocompatibility, chemical inertness, and fluorescence properties. 23,24 CDs with oxygen-containing functional groups (-OH, -COOH, etc.) are easy to realize surface functionalization with so that they possess certain chemical characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Effect of carbon dots with chitosan coating on microorganisms and storage quality of modified‐atmosphere‐packaged fresh‐cut cucumber

et al. 2019

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BACKGROUND In order to inhibit microorganisms and improve storage quality of fresh‐cut cucumber, fresh‐cut cucumber was treated by carbon dots (CDs) from kelp/chitosan (CH) coating solution with CD concentrations of 0%, 1.5%, 3% and 4.5% and then packaged as well as stored at 4 °C for 15 days. The effect of CDs/CH coating on microorganisms and the quality of modified‐atmosphere‐packaged fresh‐cut cucumber during storage were investigated. RESULTS The CDs was monodispersed spherical morphology with size distribution of 0.54–0.83 nm. Interaction of CDs and CH had the generation of strong hydrogen bond. Inhibition zone diameters of CDs/CH coating against Staphylococcus aureus and Escherichia coli were enhanced with the increase of CD concentrations. Moreover, CDs/CH coating inhibited the growth of total number of colonies, mold, and yeast in modified‐atmosphere‐packaged fresh‐cut cucumber during storage. A coating of 4.5% CDs/CH effectively reduced the losses of weight, firmness, and total soluble solids, the degradation of ascorbic acid content and flavor, and inhibited peroxidases activity, as well as decreased water mobility in fresh‐cut cucumber during storage. CONCLUSION The results indicated that a CDs/CH coating was helpful for inhibiting microorganisms and improving storage quality, and could be an effective method to prolong shelf life of fresh‐cut cucumber. © 2019 Society of Chemical Industry

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Section: Morphology and Size Distribution Of Cdsmentioning

confidence: 96%

Section: Preparation Of Cdsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of carbon dots with chitosan coating on microorganisms and storage quality of modified‐atmosphere‐packaged fresh‐cut cucumber

et al. 2019

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“…prepared strongly luminescent BCDs with Chinese yams as a carbon and nitrogen source and used them for the determination of Hg 2+ in water samples (Figure c). Hongcaitai also be cheesed as a green carbon source to generate BCDs by a simple, hydrothermal method without any further passivation or functionalization to detect Hg 2+ . Flour and sweet potato were used as a carbon source to prepare photoluminescent BCDs with a detection limit as low as 0.5 and 1 n m for analyzing Hg 2+ .…”

Section: Applications Of Bcdsmentioning

confidence: 99%

Biomass‐Derived Carbon Dots and Their Applications

Meng

Bai

Wang

et al. 2019

Energy & Environ Materials

367

179

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Carbon dots (CDs) have received much attention due to their superior properties including water solubility, low toxicity, biocompatibility, small size, fluorescence, and ease of modification. The use of a more environmentally friendly method to prepare high‐quality CDs is still an urgent question waiting for solve. The use of renewable, inexpensive, and green biomass resources not only meets the urgent need for large‐scale synthesis biomass CDs (BCDs), but also promotes the development of sustainable applications. In this article, we summarize the representative methods for synthesizing BCDs in green and simple ways using biomass as a carbon source, including hydrothermal carbonization, and microwave, pyrolysis. The prepared BCDs have a uniform particle size distribution and a relatively high throughput, which provide a method to scale up industrial production. Moreover, the integration of specific optical properties, that is, tunable photoluminescence and up‐photoluminescence, has led to remarkable use in bioimaging, sensing, and drug delivery. But the current review is not particularly comprehensive for BCDs. Therefore, we now provide a review focusing on the synthesis, properties, and recent advances in BCDs in biosensing, bioimaging, optoelectronics, and catalytic applications.

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Natural source of carbon dots from part of a plant and its applications: a review

et al. 2021

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Carbon dots (CDs) are carbon nanoparticles with a size of less than 10 nm, and are synthesized from various sources; they have been of great interest to scientists worldwide due to their unique optical, electrical, and chemical properties. Sources of carbon are inexpensive and can be classified as a renewable natural resources. Many researchers use CDs because of their low toxicity, better water solubility, high biocompatibility, and stable photoluminescence. The simple methods for producing CDs are hydrothermal and use inexpensive equipment, have low energy consumption, simple manipulation, and one‐step preparation. Since the discovery of CDs, researchers have used them in various applications such as sensing, bioimaging, drug delivery, and catalysis. In this review, CDs synthesized from natural resources such as samples from herbs, roots, leaves, flowers, and fruit and some applications are described. This review provides a summary of carbon dots that is expected to provide further information for development of new CDs.

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Green synthesis of fluorescent carbon dots from Hongcaitai for selective detection of hypochlorite and mercuric ions and cell imaging

Cited by 116 publications

References 56 publications

Effect of carbon dots with chitosan coating on microorganisms and storage quality of modified‐atmosphere‐packaged fresh‐cut cucumber

Effect of carbon dots with chitosan coating on microorganisms and storage quality of modified‐atmosphere‐packaged fresh‐cut cucumber

Biomass‐Derived Carbon Dots and Their Applications

Natural source of carbon dots from part of a plant and its applications: a review

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