Green preparation of carbon dots from Momordica charantia L. for rapid and effective sensing of p-aminoazobenzene in environmental samples

Liu, Yongli; Su, Xiaoyan; Chen, Letian; Liu, Huanjia; Zhang, Chunyuan; Liu, Jiali; Hao, Jiayi; Shangguan, Yu; Zhu, Guonian

doi:10.1016/j.envres.2021.111279

Cited by 26 publications

(5 citation statements)

References 54 publications

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“…A similar experiment was conducted by Zhao et al [ 53 ], who utilized corn bract to synthesize CDs. Additionally, the hydrothermal route utilizes natural products such as pomelo peels, tomato juice, leaves, olive pits, chitin and bitter melon as starting materials, placed in an airtight container with water under high pressure and temperature to produce CQDs [ 54 , 55 , 56 , 57 , 58 , 59 ]. Up to now, many studies have applied hydrothermal methods to synthesize CDs; see Table 4 .…”

Section: Synthesis Of Carbon Dots From Natural Resourcesmentioning

confidence: 99%

“…The difference in QY was mainly due to the difference in the size of particles, types of functional groups present on the surface of particles and passivation techniques, where CDs isolated from different natural carbon precursors also showed different luminescence properties [ 17 ]. Liu et al [ 59 ] synthesized CDs using bitter melon via simple and inexpensive hydrothermal approaches. They found that the synthesized CDs showed excellent sensing properties, as they were able to detect p-Aminoazobenzene (pAAB) effectively.…”

Section: Synthesis Of Carbon Dots From Natural Resourcesmentioning

confidence: 99%

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Green Carbon Dots: Synthesis, Characterization, Properties and Biomedical Applications

Hong

Bardakçı

Akgöl

et al. 2023

JFB

113

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Carbon dots (CDs) are a new category of crystalline, quasi-spherical fluorescence, “zero-dimensional” carbon nanomaterials with a spatial size between 1 nm to 10 nm and have gained widespread attention in recent years. Green CDs are carbon dots synthesised from renewable biomass such as agro-waste, plants or medicinal plants and other organic biomaterials. Plant-mediated synthesis of CDs is a green chemistry approach that connects nanotechnology with the green synthesis of CDs. Notably, CDs made with green technology are economical and far superior to those manufactured with physicochemical methods due to their exclusive benefits, such as being affordable, having high stability, having a simple protocol, and being safer and eco-benign. Green CDs can be synthesized by using ultrasonic strategy, chemical oxidation, carbonization, solvothermal and hydrothermal processes, and microwave irradiation using various plant-based organic resources. CDs made by green technology have diverse applications in biomedical fields such as bioimaging, biosensing and nanomedicine, which are ascribed to their unique properties, including excellent luminescence effect, strong stability and good biocompatibility. This review mainly focuses on green CDs synthesis, characterization techniques, beneficial properties of plant resource-based green CDs and their biomedical applications. This review article also looks at the research gaps and future research directions for the continuous deepening of the exploration of green CDs.

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Section: Synthesis Of Carbon Dots From Natural Resourcesmentioning

confidence: 99%

Section: Synthesis Of Carbon Dots From Natural Resourcesmentioning

confidence: 99%

Green Carbon Dots: Synthesis, Characterization, Properties and Biomedical Applications

Hong

Bardakçı

Akgöl

et al. 2023

JFB

113

View full text Add to dashboard Cite

show abstract

“…The N-H deformation vibration is observed at 831 cm −1 [49]. The FTIR signals demonstrate that CDs have hydrophilic functional groups (hydroxyl, amino and carboxyl groups) that promote water solubility and fluorescence of the synthesized CDs [50]. Figure 3c shows the 1 H-NMR spectrum of CDs.…”

Section: Surface Morphologymentioning

confidence: 98%

Sustainability Assessment of Highly Fluorescent Carbon Dots Derived from Eucalyptus Leaves

Johny,

Pinto da Silva,

Pereira

et al. 2024

Environments

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Biomass-derived carbon dots (CDs) are gaining much interest in recent times, as they provide a sustainable option with abundant availability, a low cost and tunable luminescence. Herein, we report a simple green synthesis method to produce highly fluorescent CDs from Eucalyptus globulus leaves using the one-pot hydrothermal approach. The fabricated CDs exhibit strong blue fluorescence with an excitation and emission maxima of 320 nm and 445 nm, respectively. The highest quantum yield (QY) obtained was 60.7%. With the reported optical properties and biocompatibility, CDs can be looked at as a promising candidate for potential biosensing applications. Moreover, we employed a life cycle assessment (LCA) cradle-to-gate approach to study the environmental impacts of the synthesis strategy used for the fabrication of CDs. The results point out that citric acid is the main hotspot in CD synthesis, regarding environmental impacts in most categories. This justifies the introduction of biomass, which reduces the amount of citric acid, thus leading to a more sustainable synthesis strategy for fabricating CDs.

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“…The N-H deformation vibration is observed at 831 cm -1 [42]. The FTIR signals demonstrate that CDs possessed various hydrophilic functional groups containing hydroxyl, amino, and carboxyl groups which are beneficial to further strengthen the water solubility and fluorescent properties of the as-prepared CDs [43]. To study the surface composition and electronic states of the elements present in CDs, XPS analysis was conducted, and the results are shown in Figure 3(a).…”

Section: Surface Morphologymentioning

confidence: 99%

Sustainability Assessment of Highly Fluorescent Carbon Dots Derived from Eucalyptus Leaves

Johny¹,

Silva²,

Pereira³

et al. 2023

Preprint

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Biomass-derived carbon dots (CDs) are gaining much interest in recent times as it is a sustainable option with abundant availability, low cost, and tunable luminescence. Herein, we report a simple green synthesis method to produce highly fluorescent CDs from Eucalyptus globulus leaves using the one-pot hydrothermal approach. The fabricated CDs exhibit strong blue fluorescence with an excitation and emission maxima of 340 nm and 442 nm respectively. The highest quantum yield (QY) obtained was 60.7%. Due to its promising optical properties and biocompatibility, CDs can be a potential candidate for biosensing applications. Moreover, we employed a life cycle assessment (LCA) cradle-to-gate approach to study the environmental impacts of the synthesis strategy used for the fabrication of CDs. The results point out that citric acid is a main hotspot in CDs synthesis, regarding environmental impacts in most categories. This justifies the introduction of biomass, which reduces the amount of citric acid, thus leading to a more sustainable synthesis strategy for fabricating CDs.

show abstract

Green preparation of carbon dots from Momordica charantia L. for rapid and effective sensing of p-aminoazobenzene in environmental samples

Cited by 26 publications

References 54 publications

Green Carbon Dots: Synthesis, Characterization, Properties and Biomedical Applications

Green Carbon Dots: Synthesis, Characterization, Properties and Biomedical Applications

Sustainability Assessment of Highly Fluorescent Carbon Dots Derived from Eucalyptus Leaves

Sustainability Assessment of Highly Fluorescent Carbon Dots Derived from Eucalyptus Leaves

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