Eco-friendly synthesis of a highly fluorescent carbon dots from spider silk and its application towards Hg (II) ions detection in real sample and living cells

Sahoo, Nandan Kumar; Das, Somnath; Jana, Gopal Chandra; Aktara, Mt Nasima; Patra, Anirudha; Maji, Anukul; Beg, M. M. Sufyan; Jha, Pradeep K.; Hossain, Maidul

doi:10.1016/j.microc.2018.10.006

Cited by 19 publications

(11 citation statements)

References 58 publications

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“…The nitrogen content of 2.46% is extremely low and difficult to detect in the full spectrum; however, the two peaks can be clearly observed in the high-resolution spectrum of the N 1 s region (Figure d). The peaks at 399.4 and 401.4 cm –1 are assigned to C–N and N–H, respectively. , Both the FTIR and XPS results confirmed the presence of hydrophilic oxygen- and nitrogen-containing groups. These are reported to be responsible for the photoluminescence properties of CDs and the presence of binding sites for small molecules and ions, providing unique sensing capability. , …”

Section: Resultsmentioning

confidence: 72%

“…The peaks at 399.4 and 401.4 cm −1 are assigned to C−N and N−H, respectively. 39,40 Both the FTIR and XPS results confirmed the presence of hydrophilic oxygen-and nitrogen-containing groups. These are reported to be responsible for the photoluminescence properties of CDs and the presence of binding sites for small molecules and ions, providing unique sensing capability.…”

Section: ■ Experimental Sectionmentioning

confidence: 82%

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Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg²⁺ and Cu²⁺ ions

Fujii

et al. 2019

ACS Sustainable Chem. Eng.

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In this work, a novel sponge cellulose fluorescence spherical (CS–CDs) was prepared by an in situ microwave method using cellulose as a base material, polyethylenimine (PEI) as a nitrogen-doping reagent, and citric acid (CA) as an external carbon source. The CS–CDs were used for highly sensitive selective detection of Hg2+ and semiquantitative visual detection of Cu2+ in aquatic environments. Their excellent fluorescence properties and porous structure enable the CS–CDs to adsorb and detect these ions quickly and sensitively, and they can detect Hg2+ selectively with a detection limit of 26 nM. Additionally, an interesting phenomenon was observed where the color of the cellulose sphere changes continuously from inherent pale yellow to deep green as the Cu2+ adsorption increases from 3 to 60 μM, indicating that the CS–CDs can be used for semiquantitative visual detection of Cu2+. The fluorescence and visual detection limits for Cu2+ are 0.11 and 3 μM, respectively; these are both considerably lower than the allowable content of Cu2+ (20 μM) in potable water. The discoloration mechanism of Cu2+ adsorption by CS–CDs was studied. It can be considered that after CS–CDs adsorb Cu2+, a large amount of Cu2+ amine complexes form, aggregate, and concentrate on the cellulose sphere substrate to develop the color. Finally, we used the CS–CDs to analyze tap and river water based on highly reproducible results. This cellulose sponge-based device could be used to protect probes from environmental interference and is sufficiently stable to withstand at least 22 cycles of exposure to ethylenediaminetetraacetic acid.

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Section: Resultsmentioning

confidence: 72%

Section: ■ Experimental Sectionmentioning

confidence: 82%

Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg²⁺ and Cu²⁺ ions

Fujii

et al. 2019

ACS Sustainable Chem. Eng.

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“…141 The high QY of N-CDs in this study is attributed to the surface passivation and formation of a pyrrolic structure via the effective N heteroatom doping in the carbon nanosheet-type core domain. Subsequent reports of N-CDs derived from spider silk, 142 SF, 143,144 and silk sericin 145,146 showed appreciable QYs (Table 1). The high QY of 67.0% for the N-CDs (derived from silk sericin) prepared at a low pyrolysis temperature (150 °C) was ascribed to the formation of a carbon core together with O, N-based functional groups on its surface.…”

Section: Developments In the Precursors And Synthetic Methods For Ani...mentioning

confidence: 92%

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

Dubey

2023

RSC Adv.

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“…Sahoo et al . used spider silk for the preparing CDs and reported application of these carbons dots as biosensor of Hg (II) ions in a real sample and living cells [76] . The spider silk was converted to CDs using a simple hydrothermal method in which first spider silk washed with ethanol and ultrapure water.…”

Section: Synthesis Purification and Functionalization Of Carbon Dotsmentioning

confidence: 99%

Recent Development in Synthesis of Carbon Dots from Natural Resources and Their Applications in Biomedicine and Multi‐Sensing Platform

et al. 2021

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Carbon has always found a spotlight in human life either in the form of graphite, diamonds, activated charcoal, carbon nanotubes, or carbon dots (CDs). Carbon quantum dots (CQDs) or CDs became the centre of attraction because of their potential applications in biomedical field such as bio‐imaging, drug nanocarriers, gene therapeutics, photosensitizing agents, theranostics and provides other multifunctional diagnostic platforms. There are numerous advantages of CDs due to their biocompatibility, reduced toxicity, water‐solubility, ease of scale‐up, and, most notably their fluorescence properties contrary to other carbon nanostructures. In last few years, significant efforts have been put by various research teams to synthesize and develop nanostructured materials possessing specific functional properties and characteristics. This work focus on the recent developments in the synthetic approaches applied for CDs using environment‐friendly sources. This review also highlights the mechanistic aspects, applications of CDs in biomedicine and a multi‐sensing platform along with challenges and future perspectives of this promising field. The authors believe that this review will help audible researchers to select a suitable environment‐friendly approach for the synthesis of CDs from green sources with required functions and properties. It will also guide researchers to develop a more convenient, efficient, and environment‐friendly method for the synthesis of new tunable carbon dots.

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Eco-friendly synthesis of a highly fluorescent carbon dots from spider silk and its application towards Hg (II) ions detection in real sample and living cells

Cited by 19 publications

References 58 publications

Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg²⁺ and Cu²⁺ ions

Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg²⁺ and Cu²⁺ ions

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

Recent Development in Synthesis of Carbon Dots from Natural Resources and Their Applications in Biomedicine and Multi‐Sensing Platform

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Eco-friendly synthesis of a highly fluorescent carbon dots from spider silk and its application towards Hg (II) ions detection in real sample and living cells

Cited by 19 publications

References 58 publications

Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg2+ and Cu2+ ions

Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg2+ and Cu2+ ions

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

Recent Development in Synthesis of Carbon Dots from Natural Resources and Their Applications in Biomedicine and Multi‐Sensing Platform

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Product

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Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg²⁺ and Cu²⁺ ions

Fluorescent Spherical Sponge Cellulose Sensors for Highly Selective and Semiquantitative Visual Analysis: Detection of Hg²⁺ and Cu²⁺ ions